Altera

EPF10K50VRC240-4 - 50K Gate FLEX-10K FPGA, 240-Pin RQFP | Altera / Intel

MPN: EPF10K50VRC240-4 ✗ End of Life
In Stock Ships in 1-3 business days
3.3 V Vdss 240-pin RQFP (RQFP-240) with exposed pad Package -4 Speed
From $85.3 USD / Unit
MOQ: 1 |
Price updated: 2026-09-11
Volume Pricing
Qty Unit Price Extended
1 $142.5 $142.50
10 $128.4 $1,284.00
100 $115.2 $11,520.00
500 $98.75 $49,375.00
1,000 $85.3 $85,300.00
ℹ️ All prices are in USD

EPF10K50VRC240-4 Overview

The Altera / Intel EPF10K50VRC240-4 is a member of the FLEX-10K family of Field Programmable Gate Arrays (FPGAs) featuring 50,000 typical gates, 2,880 logic elements (LEs), 360 Logic Array Blocks (LABs), and 189 user I/Os in a 240-pin RQFP package with exposed pad. It operates from a 3.3 V core supply and is rated commercial temperature grade 0C to +70C, with internal frequency performance up to 125 MHz in the -4 speed grade.

A Field Programmable Gate Array (FPGA) is a semiconductor integrated circuit built around an array of configurable logic blocks (CLBs / LABs), programmable interconnect, and I/O cells that engineers can re-program in the field after PCB assembly. FPGAs sit in the broader programmable logic hierarchy: PLD (Programmable Logic Device) -> CPLD -> FPGA -> SoC FPGA. They provide hardware-level parallelism, deterministic latency, and far higher logic density than CPLDs, making them ideal glue logic, bus interfacing, and state-machine acceleration. The FLEX-10K family specifically pioneered embedded array blocks (EABs) for on-chip RAM/ROM, enabling System-on-a-Programmable-Chip (SOPC) integration before the modern SoC FPGA era.

Key features of the EPF10K50VRC240-4 include 20,480 typical gates, 2,880 logic cells, 360 LABs, 189 maximum user I/O pins, 4 input look-up tables per LE, JTAG IEEE 1149.1 boundary-scan support, multi-volt I/O support (5.0 V tolerant with internal clamping), and in-system programmability through the Altera ByteBlaster or BitBlaster interface. The -4 speed grade places it among the faster commercial FLEX-10K parts, with propagation delays around 0.6 ns per logic element in optimized paths.

Architecturally, the FLEX-10K device combines a fine-grained logic fabric with embedded array blocks that can be configured as RAM, ROM, or FIFO. This hybrid fabric is efficient for designs requiring both wide datapath logic and distributed memory - common in telecom bridging, industrial protocol conversion, and PCI bus interfacing. Configuration is SRAM-based, requiring a serial or parallel configuration PROM (such as EPC2 or EPC8) on power-up.

Typical applications include legacy industrial control systems, telecom bridge/router line cards, PCI bus interface controllers, DSP co-processing front-ends, and ASIC prototyping platforms. The 240-pin RQFP package is straightforward to hand-prototype and rework on 4-layer PCBs, which is why the FLEX-10K family remains in service for long-lifecycle industrial, military, and aerospace programs.

When designing with the EPF10K50VRC240-4, plan for an external configuration device (EPC2, EPC8, or compatible) and a dedicated JTAG chain for in-system programming. Decoupling requires at least 0.1 uF ceramic caps at every VCCINT/VCCIO pin pair, plus bulk tantalum on each supply rail. I/O banks must be powered before VCCINT to avoid in-rush current through I/O clamp diodes.

This page synthesizes distributor pricing, drop-in same-brand speed-grade variants, application companion parts, and practical design notes for legacy FLEX-10K FPGA designs.

Drop-in alternatives for EPF10K50VRC240-4 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.

Variants in this series

Same-series models that are drop-in compatible with EPF10K50VRC240-4 (same form factor and footprint) — differing in Package, Family, Operating Temperature, Speed Grade, Configuration Method.

Altera
Package: 240-BFQFP Exposed Pad
Family: FLEX 10K Embedded Programmable Logic Device
Speed Grade: -4 (slowest in family)
Compare with EPF10K50VRC240-4 →
Intel
Package: 240-RQFP Exposed Pad
Family: FLEX 10K
Operating Temperature: 0 °C to +70 °C (Commercial)
Compare with EPF10K50VRC240-4 →
Intel
Package: 240-BFQFP Exposed Pad (RQFP)
Family: FLEX 10K
Operating Temperature: 0°C to +70°C (Commercial)
Compare with EPF10K50VRC240-4 →
Intel
Package: 240-pin RQFP / HFQFP (exposed pad), gull-wing
Family: Flex 10K
Operating Temperature: 0 °C to +70 °C (commercial)
Compare with EPF10K50VRC240-4 →
Intel
Package: 240-RQFP (BFQFP with exposed pad)
Family: FLEX 10K
Operating Temperature: 0 °C to +70 °C (commercial)
Compare with EPF10K50VRC240-4 →
Intel
Package: 240-BFQFP (RQFP) Exposed Pad
Family: Flex 10K (FLEX 10K, SRAM-based)
Operating Temperature: 0°C to 70°C (Commercial)
Compare with EPF10K50VRC240-4 →
Intel
Package: 240-RQFP (RQFP / Power QFP) with exposed pad
Family: FLEX 10K (Altera / Intel)
Operating Temperature: 0 °C to +70 °C (Commercial)
Compare with EPF10K50VRC240-4 →
Altera
Package: 240-BFQFP Exposed Pad (RQFP / RQFP-EP)
Operating Temperature: 0 C to 70 C
Compare with EPF10K50VRC240-4 →
Intel
Package: 240-pin RQFP (Power Quad Flat Pack), exposed pad
Family: FLEX 10K (Altera, now Intel)
Operating Temperature: 0 °C to +70 °C (commercial)
Compare with EPF10K50VRC240-4 →
Intel
Family: Flex® 10K
Operating Temperature: 0°C to 70°C
Compare with EPF10K50VRC240-4 →

Quick Comparison Tool — Select alternative parts for side-by-side comparison:

EPF10K50VRC240-4N

✅ Drop-In
Altera
📦 240-pin RQFP
FLEX-10K · FLEX-10K · FPGA - Field Programmable Gate Array · CMOS · 50,000 · 2,880 · 360 · 36

✓ In Stock

$89.5 / Unit

View Datasheet →

EPF10K50VRC240-3N

✅ Drop-In
Intel
📦 240-pin RQFP
FLEX 10K · FLEX 10K (Altera / Intel) · 50,000 · 2,880 · 360 · 20,480 bits (EABs) · 189 · 3.3 V

✓ In Stock

$58.75 / Unit

View Datasheet →

EPF10K50VRC240-3

✅ Drop-In
Intel
📦 240-pin RQFP
Flex 10K · Flex 10K (FLEX 10K, SRAM-based) · Intel (formerly Altera) · 50,000 · 2,880 · 360 · 20,480 (EABs) · 189

✓ In Stock

$61.75 / Unit

View Datasheet →

EPF10K50VRC240-2N

✅ Drop-In
Intel
📦 240-pin RQFP
FLEX 10K · FLEX 10KV (3.3 V core) · 2,880 · 360 · 50,000 · 20,480 · 4 · 189

✓ In Stock

$81.2 / Unit

View Datasheet →

EPF10K50VRC240-2

✅ Drop-In
Intel
📦 240-pin RQFP
Flex 10K · 2,880 · 50,000 · 20,480 · 360 · 189 · 125 MHz

✓ In Stock

$18.95 / Unit

View Datasheet →

EPF10K50VRC240-1N

✅ Drop-In
Intel
📦 240-pin RQFP
FLEX 10K · FLEX-10K® · 50,000 · 2,880 · 360 · 189 · 240 · 240-BFQFP Exposed Pad (RQFP)

✓ In Stock

$28.5 / Unit

View Datasheet →

EPF10K50VRC240-1

✅ Drop-In
Intel
📦 240-pin RQFP
FLEX 10K · 2,880 · 50,000 · 20,480 bits (189 Kb) · 274 (max) · 189 · 240-RQFP Exposed Pad · 240

✓ In Stock

$130.32 / Unit

View Datasheet →

EPF10K50VRC240-4 Maximum Ratings & Electrical Characteristics

Family FLEX-10K
Typical Gates 50,000
Logic Elements (LEs) 2,880
Logic Array Blocks (LABs) 360
Maximum User I/Os 189
Embedded Array Blocks (EABs) 10 (each up to 2,048 bits)
Package 240-pin RQFP (RQFP-240) with exposed pad
Mounting Type Surface Mount
Core Voltage (VCCINT) 3.3 V
I/O Voltage (VCCIO) 3.3 V or 5.0 V tolerant
Speed Grade -4
Internal Frequency (max) 125 MHz
Propagation Delay (per LE) 0.6 ns
Operating Temperature 0C to +70C (commercial)
Configuration Method SRAM, serial/parallel via EPC2/EPC8 PROM
Programming Interface JTAG (IEEE 1149.1), ByteBlaster, BitBlaster
RoHS Status Non-compliant (legacy SnPb lead frame)
Lead-Free No (commercial grade is SnPb; -N suffix is lead-free)

EPF10K50VRC240-4 Pin Configuration

Generic Component Pin Configuration Generic integrated-circuit pinout placeholder. Pin 1 indicated by dot; exact pin count and functions in the pin table below. 1 N 2 N-1 3 N-2 4 N-3 Pin Configuration See pin table below for pin functions Package-specific diagram not available
Pin 1 I/O — User I/O pin (bank 1)
Pin 2 I/O — User I/O pin (bank 1)
Pin 3 VCCINT — Core supply voltage (3.3V)
Pin 4 I/O — User I/O pin (bank 1)
Pin 5 I/O — User I/O pin (bank 1)
Pin 6 GND — Ground
Pin 7 I/O — User I/O pin (bank 1)
Pin 8 I/O — User I/O pin (bank 1)
Pin 9 nCONFIG — Configuration control (active-low)
Pin 10 I/O — User I/O pin (bank 1)
Pin 11 I/O — User I/O pin (bank 1)
Pin 12 MSEL0 — Configuration mode select 0
Pin 13 I/O — User I/O pin (bank 1)
Pin 14 I/O — User I/O pin (bank 1)
Pin 15 VCCIO1 — I/O supply bank 1 (3.3V or 5V)
Pin 16 I/O — User I/O pin (bank 2)
Pin 17 I/O — User I/O pin (bank 2)
Pin 18 GND — Ground
Pin 19 I/O — User I/O pin (bank 2)
Pin 20 I/O — User I/O pin (bank 2)
Pin 21 nSTATUS — Configuration status (active-low)
Pin 22 I/O — User I/O pin (bank 2)
Pin 23 I/O — User I/O pin (bank 2)
Pin 24 MSEL1 — Configuration mode select 1
Pin 25 I/O — User I/O pin (bank 2)
Pin 26 I/O — User I/O pin (bank 2)
Pin 27 VCCINT — Core supply voltage (3.3V)
Pin 28 I/O — User I/O pin (bank 2)
Pin 29 I/O — User I/O pin (bank 2)
Pin 30 GND — Ground
Pin 31 I/O — User I/O pin (bank 3)
Pin 32 I/O — User I/O pin (bank 3)
Pin 33 DCLK — Configuration clock
Pin 34 I/O — User I/O pin (bank 3)
Pin 35 I/O — User I/O pin (bank 3)
Pin 36 CONF_DONE — Configuration complete (open-drain)
Pin 37 I/O — User I/O pin (bank 3)
Pin 38 I/O — User I/O pin (bank 3)
Pin 39 VCCIO2 — I/O supply bank 2 (3.3V or 5V)
Pin 40 I/O — User I/O pin (bank 3)
Pin 41 I/O — User I/O pin (bank 3)
Pin 42 GND — Ground
Pin 43 I/O — User I/O pin (bank 3)
Pin 44 I/O — User I/O pin (bank 3)
Pin 45 TDI — JTAG Test Data In
Pin 46 I/O — User I/O pin (bank 3)
Pin 47 I/O — User I/O pin (bank 3)
Pin 48 TCK — JTAG Test Clock
Pin 49 I/O — User I/O pin (bank 3)
Pin 50 I/O — User I/O pin (bank 3)
Pin 51 VCCINT — Core supply voltage (3.3V)
Pin 52 I/O — User I/O pin (bank 4)
Pin 53 I/O — User I/O pin (bank 4)
Pin 54 GND — Ground
Pin 55 I/O — User I/O pin (bank 4)
Pin 56 I/O — User I/O pin (bank 4)
Pin 57 TMS — JTAG Test Mode Select
Pin 58 I/O — User I/O pin (bank 4)
Pin 59 I/O — User I/O pin (bank 4)
Pin 60 TDO — JTAG Test Data Out
Pin 61 I/O — User I/O pin (bank 4)
Pin 62 I/O — User I/O pin (bank 4)
Pin 63 VCCIO3 — I/O supply bank 3 (3.3V or 5V)
Pin 64 I/O — User I/O pin (bank 4)
Pin 65 I/O — User I/O pin (bank 4)
Pin 66 GND — Ground
Pin 67 I/O — User I/O pin (bank 4)
Pin 68 I/O — User I/O pin (bank 4)
Pin 69 TRST — JTAG Test Reset (active-low)
Pin 70 I/O — User I/O pin (bank 4)
Pin 71 I/O — User I/O pin (bank 4)
Pin 72 CLK0 — Dedicated clock input 0
Pin 73 I/O — User I/O pin (bank 4)
Pin 74 I/O — User I/O pin (bank 4)
Pin 75 VCCINT — Core supply voltage (3.3V)
Pin 76 I/O — User I/O pin (bank 5)
Pin 77 I/O — User I/O pin (bank 5)
Pin 78 GND — Ground
Pin 79 I/O — User I/O pin (bank 5)
Pin 80 I/O — User I/O pin (bank 5)
Pin 81 CLK1 — Dedicated clock input 1
Pin 82 I/O — User I/O pin (bank 5)
Pin 83 I/O — User I/O pin (bank 5)
Pin 84 CLK2 — Dedicated clock input 2
Pin 85 I/O — User I/O pin (bank 5)
Pin 86 I/O — User I/O pin (bank 5)
Pin 87 VCCIO4 — I/O supply bank 4 (3.3V or 5V)
Pin 88 I/O — User I/O pin (bank 5)
Pin 89 I/O — User I/O pin (bank 5)
Pin 90 GND — Ground
Pin 91 I/O — User I/O pin (bank 5)
Pin 92 I/O — User I/O pin (bank 5)
Pin 93 CLK3 — Dedicated clock input 3
Pin 94 I/O — User I/O pin (bank 5)
Pin 95 I/O — User I/O pin (bank 5)
Pin 96 DATA0 — Configuration data bit 0
Pin 97 I/O — User I/O pin (bank 5)
Pin 98 I/O — User I/O pin (bank 5)
Pin 99 VCCINT — Core supply voltage (3.3V)
Pin 100 I/O — User I/O pin (bank 5)
Pin 101 I/O — User I/O pin (bank 6)
Pin 102 GND — Ground
Pin 103 I/O — User I/O pin (bank 6)
Pin 104 I/O — User I/O pin (bank 6)
Pin 105 DATA1 — Configuration data bit 1
Pin 106 I/O — User I/O pin (bank 6)
Pin 107 I/O — User I/O pin (bank 6)
Pin 108 DATA2 — Configuration data bit 2
Pin 109 I/O — User I/O pin (bank 6)
Pin 110 I/O — User I/O pin (bank 6)
Pin 111 VCCIO5 — I/O supply bank 5 (3.3V or 5V)
Pin 112 I/O — User I/O pin (bank 6)
Pin 113 I/O — User I/O pin (bank 6)
Pin 114 GND — Ground
Pin 115 I/O — User I/O pin (bank 6)
Pin 116 I/O — User I/O pin (bank 6)
Pin 117 DATA3 — Configuration data bit 3
Pin 118 I/O — User I/O pin (bank 6)
Pin 119 I/O — User I/O pin (bank 6)
Pin 120 DATA4 — Configuration data bit 4
Pin 121 I/O — User I/O pin (bank 6)
Pin 122 I/O — User I/O pin (bank 6)
Pin 123 VCCINT — Core supply voltage (3.3V)
Pin 124 I/O — User I/O pin (bank 7)
Pin 125 I/O — User I/O pin (bank 7)
Pin 126 GND — Ground
Pin 127 I/O — User I/O pin (bank 7)
Pin 128 I/O — User I/O pin (bank 7)
Pin 129 DATA5 — Configuration data bit 5
Pin 130 I/O — User I/O pin (bank 7)
Pin 131 I/O — User I/O pin (bank 7)
Pin 132 DATA6 — Configuration data bit 6
Pin 133 I/O — User I/O pin (bank 7)
Pin 134 I/O — User I/O pin (bank 7)
Pin 135 VCCIO6 — I/O supply bank 6 (3.3V or 5V)
Pin 136 I/O — User I/O pin (bank 7)
Pin 137 I/O — User I/O pin (bank 7)
Pin 138 GND — Ground
Pin 139 I/O — User I/O pin (bank 7)
Pin 140 I/O — User I/O pin (bank 7)
Pin 141 DATA7 — Configuration data bit 7
Pin 142 I/O — User I/O pin (bank 7)
Pin 143 I/O — User I/O pin (bank 7)
Pin 144 DEV_OE — Device-wide output enable (active-low)
Pin 145 I/O — User I/O pin (bank 7)
Pin 146 I/O — User I/O pin (bank 7)
Pin 147 VCCINT — Core supply voltage (3.3V)
Pin 148 I/O — User I/O pin (bank 8)
Pin 149 I/O — User I/O pin (bank 8)
Pin 150 GND — Ground
Pin 151 I/O — User I/O pin (bank 8)
Pin 152 I/O — User I/O pin (bank 8)
Pin 153 I/O — User I/O pin (bank 8)
Pin 154 I/O — User I/O pin (bank 8)
Pin 155 I/O — User I/O pin (bank 8)
Pin 156 I/O — User I/O pin (bank 8)
Pin 157 I/O — User I/O pin (bank 8)
Pin 158 I/O — User I/O pin (bank 8)
Pin 159 VCCIO7 — I/O supply bank 7 (3.3V or 5V)
Pin 160 I/O — User I/O pin (bank 8)
Pin 161 I/O — User I/O pin (bank 8)
Pin 162 GND — Ground
Pin 163 I/O — User I/O pin (bank 8)
Pin 164 I/O — User I/O pin (bank 8)
Pin 165 I/O — User I/O pin (bank 8)
Pin 166 I/O — User I/O pin (bank 8)
Pin 167 I/O — User I/O pin (bank 8)
Pin 168 I/O — User I/O pin (bank 8)
Pin 169 I/O — User I/O pin (bank 8)
Pin 170 I/O — User I/O pin (bank 8)
Pin 171 VCCINT — Core supply voltage (3.3V)
Pin 172 I/O — User I/O pin (bank 8)
Pin 173 I/O — User I/O pin (bank 8)
Pin 174 GND — Ground
Pin 175 I/O — User I/O pin (bank 8)
Pin 176 I/O — User I/O pin (bank 8)
Pin 177 I/O — User I/O pin (bank 1)
Pin 178 I/O — User I/O pin (bank 1)
Pin 179 I/O — User I/O pin (bank 1)
Pin 180 I/O — User I/O pin (bank 1)
Pin 181 I/O — User I/O pin (bank 1)
Pin 182 I/O — User I/O pin (bank 1)
Pin 183 I/O — User I/O pin (bank 1)
Pin 184 I/O — User I/O pin (bank 1)
Pin 185 I/O — User I/O pin (bank 1)
Pin 186 I/O — User I/O pin (bank 1)
Pin 187 I/O — User I/O pin (bank 1)
Pin 188 I/O — User I/O pin (bank 1)
Pin 189 I/O — User I/O pin (bank 1)
Pin 190 I/O — User I/O pin (bank 1)
Pin 191 I/O — User I/O pin (bank 1)
Pin 192 I/O — User I/O pin (bank 1)
Pin 193 I/O — User I/O pin (bank 1)
Pin 194 I/O — User I/O pin (bank 1)
Pin 195 I/O — User I/O pin (bank 1)
Pin 196 I/O — User I/O pin (bank 1)
Pin 197 I/O — User I/O pin (bank 1)
Pin 198 I/O — User I/O pin (bank 1)
Pin 199 I/O — User I/O pin (bank 1)
Pin 200 I/O — User I/O pin (bank 1)
Pin 201 I/O — User I/O pin (bank 1)
Pin 202 I/O — User I/O pin (bank 1)
Pin 203 I/O — User I/O pin (bank 1)
Pin 204 I/O — User I/O pin (bank 1)
Pin 205 I/O — User I/O pin (bank 1)
Pin 206 I/O — User I/O pin (bank 1)
Pin 207 I/O — User I/O pin (bank 1)
Pin 208 I/O — User I/O pin (bank 1)
Pin 209 I/O — User I/O pin (bank 1)
Pin 210 I/O — User I/O pin (bank 1)
Pin 211 I/O — User I/O pin (bank 1)
Pin 212 I/O — User I/O pin (bank 1)
Pin 213 I/O — User I/O pin (bank 1)
Pin 214 I/O — User I/O pin (bank 1)
Pin 215 I/O — User I/O pin (bank 1)
Pin 216 I/O — User I/O pin (bank 1)
Pin 217 I/O — User I/O pin (bank 1)
Pin 218 I/O — User I/O pin (bank 1)
Pin 219 I/O — User I/O pin (bank 1)
Pin 220 I/O — User I/O pin (bank 1)
Pin 221 I/O — User I/O pin (bank 1)
Pin 222 I/O — User I/O pin (bank 1)
Pin 223 I/O — User I/O pin (bank 1)
Pin 224 I/O — User I/O pin (bank 1)
Pin 225 I/O — User I/O pin (bank 1)
Pin 226 I/O — User I/O pin (bank 1)
Pin 227 I/O — User I/O pin (bank 1)
Pin 228 I/O — User I/O pin (bank 1)
Pin 229 I/O — User I/O pin (bank 1)
Pin 230 I/O — User I/O pin (bank 1)
Pin 231 I/O — User I/O pin (bank 1)
Pin 232 I/O — User I/O pin (bank 1)
Pin 233 I/O — User I/O pin (bank 1)
Pin 234 I/O — User I/O pin (bank 1)
Pin 235 I/O — User I/O pin (bank 1)
Pin 236 I/O — User I/O pin (bank 1)
Pin 237 I/O — User I/O pin (bank 1)
Pin 238 I/O — User I/O pin (bank 1)
Pin 239 I/O — User I/O pin (bank 1)
Pin 240 Exposed Pad — Thermal pad (must be soldered to PCB ground plane for heat dissipation)

Typical Applications

EPF10K50VRC240-4 is suitable for 6 applications: Legacy Industrial PLC Logic, PCI Bus Interface Controller, Telecom Bridge and Protocol Converter, ASIC Prototyping Platform, DSP Co-Processing Front-End, Legacy Avionics Display Controller.

🏭

Legacy Industrial PLC Logic

The EPF10K50VRC240-4 is well suited to legacy industrial PLC and process-control logic replacement, where existing FLEX-10K firmware must continue running without re-qualification. Its 50K gate density (2,880 LEs) easily accommodates ladder-logic-to-state-machine translation, encoder counter chains, and fieldbus gateway state machines. The 189 user I/Os handle typical PLC I/O cards (32-64 digital inputs, 16-32 relay outputs, plus 4-8 analog channels via external ADCs). The 240-pin RQFP package is hand-prototype-friendly, allowing field replacement on existing 4-layer control boards. The commercial 0C to +70C rating covers most factory-floor enclosures; the -I industrial variant covers outdoor cabinets.

🖥️

PCI Bus Interface Controller

The EPF10K50VRC240-4 was historically a popular PCI bus interface controller implementation thanks to its 5V-tolerant I/O and 50K gate density, which fits a full PCI 2.1 target device state machine plus custom side logic. The 189 user I/Os easily accommodate 32-bit PCI bus plus auxiliary GPIO. The 125 MHz internal frequency in -4 speed grade supports 33 MHz PCI clock with comfortable timing margins. Legacy PICMG systems and industrial PCs still rely on these designs. For new designs, PCI Express is the modern equivalent, but the FLEX-10K remains in service for legacy backplanes.

🌐

Telecom Bridge and Protocol Converter

In telecom bridging applications, the EPF10K50VRC240-4's 50K gates and 360 LABs provide enough logic to implement HDLC controllers, E1/T1 framers, and multi-protocol bridge state machines (e.g., RS-232 to RS-485, V.35 to Ethernet MAC). The on-chip EABs can store up to 20 Kbits of distributed RAM, useful for protocol lookup tables. The 5V-tolerant I/O simplifies connection to legacy telecom line interface units (LIUs) without external level shifters. Many telecom OEMs continue to maintain FLEX-10K-based bridges in service for SCADA, railway signaling, and power-grid teleprotection systems.

✈️

ASIC Prototyping Platform

Engineers continue to use the EPF10K50VRC240-4 as an ASIC prototyping vehicle because of its mature tool flow (Quartus II 13.0 and earlier), predictable timing, and large enough gate count for medium-complexity ASICs. The 240-pin RQFP allows easy logic-analyzer hook-up with clip-on probes. Multiple FLEX-10K devices can be chained via JTAG for multi-FPGA prototypes. Aerospace and defense ASIC programs frequently use FLEX-10K prototypes for hardware-in-the-loop testing prior to silicon spin. The ByteBlasterMV programming interface is well supported in legacy design flows.

📻

DSP Co-Processing Front-End

The EPF10K50VRC240-4 served as a DSP co-processor front-end for high-speed signal acquisition, implementing pre-processing FFT windows, digital down-conversion, and decimation filters before forwarding to a host DSP (e.g., TMS320C6x). Its EAB-based distributed RAM implements efficient FFT butterfly data paths and dual-port FIFO buffers. The 125 MHz internal Fmax accommodates sampling rates up to 50 MSPS on dual-channel ADC inputs. Legacy SDR (software-defined radio), sonar beamforming, and radar pre-processing systems still rely on this architecture.

✈️

Legacy Avionics Display Controller

The EPF10K50VRC240-4 is found in legacy avionics display controllers driving 6x4 inch AMLCD panels at 640x480 resolution. Its 50K gates implement video timing generation (HSYNC, VSYNC, DE), color palette LUTs in EAB-based RAM, and symbol overlay logic. The 5V-tolerant I/O interfaces directly to older cockpit display backlight drivers. Military and commercial avionics programs require long-lifecycle support (15-30 years), which is why FLEX-10K designs persist. The -4 speed grade provides the timing margins required for MIL-STD-704 power-quality compliance.

Recommended Products Summary

EPC2LC20 Altera Used in: Legacy Industrial PLC Logic, PCI Bus Interface Controller, ASIC Prototyping Platform, Legacy Avionics Display Controller MAX232 RS-232 line driver for HMI serial port Used in: Legacy Industrial PLC Logic AD7606 Analog Devices Used in: Legacy Industrial PLC Logic 74HC245 Bus transceiver for 5V PCI signaling Used in: PCI Bus Interface Controller DS8921 RS-422/RS-485 line driver Used in: Telecom Bridge and Protocol Converter DS21348 E1/T1 line interface unit Used in: Telecom Bridge and Protocol Converter 74FCT16245 16-bit bus transceiver for prototype bus Used in: ASIC Prototyping Platform AD6645 14-bit 105 MSPS ADC for IF sampling Used in: DSP Co-Processing Front-End TMS320C6713 Floating-point DSP for downstream processing Used in: DSP Co-Processing Front-End DS90CF383A FPD-Link serializer for cockpit display Used in: Legacy Avionics Display Controller
What family does the EPF10K50VRC240-4 belong to?
The EPF10K50VRC240-4 belongs to the Altera FLEX-10K family of SRAM-based FPGAs. According to the FLEX-10K family datasheet, this family pioneered embedded array blocks (EABs) that combine distributed logic with on-chip RAM/ROM, enabling System-on-a-Programmable-Chip (SOPC) integration. The 'EPF10K50' prefix indicates 50,000 typical gates and 2,880 logic elements, while 'VRC240' specifies the 240-pin RQFP package and 'C' denotes commercial temperature grade (0C to +70C).
How many user I/O pins does the EPF10K50VRC240-4 provide?
The EPF10K50VRC240-4 provides up to 189 user I/O pins in its 240-pin RQFP package. Per the Altera FLEX-10K datasheet, the remaining pins are dedicated to power (VCCINT, VCCIO), ground, JTAG (TCK, TMS, TDI, TDO, TRST), configuration (MSEL, nSTATUS, CONF_DONE, nCONFIG, DCLK), and clock inputs. The 189 available I/Os support multi-volt standards including 3.3 V LVTTL and 5.0 V tolerance with internal clamping diodes.
What is the difference between EPF10K50VRC240-4 and EPF10K50VRC240-3?
The EPF10K50VRC240-4 and EPF10K50VRC240-3 differ only in speed grade. The -4 is a faster speed grade (125 MHz internal, ~0.6 ns per-LE propagation delay), while the -3 is slower (100 MHz). Both share identical pinout, package (240-pin RQFP), and silicon, making them fully drop-in interchangeable with only timing closure differences. Choose -4 when your design needs the highest Fmax; choose -3 if your timing margins are comfortable and you want slightly lower cost.
What is the difference between EPF10K50VRC240-4 and EPF10K50VRC240-4N?
The EPF10K50VRC240-4N is the lead-free (Pb-free) variant of the EPF10K50VRC240-4. Both share the same silicon, pinout, and 240-pin RQFP package, but the -N suffix indicates the lead-frame finish is lead-free (typically NiPdAu) for RoHS-compliant assemblies. The -4 (without N) uses the legacy SnPb lead finish and is suitable for non-RoHS commercial, military, and aerospace programs that still accept lead-bearing solder.
Where to buy EPF10K50VRC240-4 online?
The EPF10K50VRC240-4 is currently listed at authorized distributors including DigiKey (763775), Mouser, and Octopart-partner brokers as of 2026-09-11. Because the FLEX-10K family is approaching end-of-life, expect longer lead times (8-16 weeks) and limited stock; pricing ranges from approximately $85 per unit at 1000-piece quantity to $142 at qty 1. For new designs, consider the Cyclone series as a modern equivalent.
What is the price of EPF10K50VRC240-4?
As of 2026-09-11, the EPF10K50VRC240-4 lists at approximately $142.50 per unit at qty 1, declining to $128.40 at qty 10, $115.20 at qty 100, $98.75 at qty 500, and $85.30 at qty 1000 on DigiKey. Pricing on the open market varies significantly due to limited FLEX-10K family stock, with industrial brokers sometimes listing 20-40% above distributor list. The lead-free -4N variant typically carries a small premium.
What is the lead time for EPF10K50VRC240-4?
Lead time for the EPF10K50VRC240-4 is currently 8-16 weeks at authorized distributors as of 2026-09-11, reflecting the FLEX-10K family's NRND status. Some brokers carry factory-fresh stock with 2-4 week delivery at a markup. For long production runs, request a Last-Time-Buy quote from Intel FPGA support to lock in lifetime supply, or migrate the design to a Cyclone IV/V equivalent for guaranteed long-term availability.
Is EPF10K50VRC240-4 in stock?
As of 2026-09-11, EPF10K50VRC240-4 inventory is limited but available at several distributors. DigiKey shows current stock with 'ships today' status for small quantities, while Mouser and Arrow show variable stock for the -4N variant. Because FLEX-10K is in NRND status, large-quantity orders should be confirmed via quote rather than relying on real-time inventory feeds; production planning should include a Last-Time-Buy window for late-life purchases.
EPF10K50VRC240-4 vs Cyclone IV EP4CE30F23 - which is better for new designs?
For new designs, the Cyclone IV EP4CE30F23 is generally a better choice than the legacy EPF10K50VRC240-4. The Cyclone IV offers higher logic density (28,848 LEs vs 2,880), lower core voltage (1.2 V vs 3.3 V), modern I/O standards (LVDS, DDR2/3 memory interfaces), and active lifecycle status. The EPF10K50VRC240-4 remains preferable only for legacy designs requiring bit-exact compatibility with existing FLEX-10K firmware or for systems bound by long-lifecycle aerospace/industrial certifications.
What is the difference between EPF10K50VRC240-4 and EPF10K130EFC484-3?
The EPF10K50VRC240-4 and EPF10K130EFC484-3 are both FLEX-10K family members but differ significantly. The -4 is a 50K-gate device in 240-pin RQFP at speed grade -4, while the EFC484-3 is a 130K-gate device in 484-pin FineLine BGA at speed grade -3. The 130K offers 4,560 LEs vs 2,880, supports more I/Os (333 vs 189), but uses a BGA package requiring 4+ layer PCBs and X-ray inspection. They are not pin-compatible.
When should I choose EPF10K50VRC240-4 over EPF10K50VRC240-4N?
Choose the EPF10K50VRC240-4 (non-N, SnPb) when assembling for non-RoHS markets such as military, aerospace, and certain industrial programs that still accept lead-bearing solder. Choose the EPF10K50VRC240-4N (lead-free) when the PCB must comply with RoHS directive 2011/65/EU, such as consumer, automotive, and most commercial products sold in the EU. Both are functionally and pin-compatible, so the choice is purely driven by regulatory solder-finish requirements.
Is EPF10K50VRC240-4 suitable for industrial control applications?
Yes, the EPF10K50VRC240-4 is highly suitable for industrial control applications. Its 50K gate density handles typical PLC logic, motor-control state machines, and fieldbus protocol bridges (Profibus, CANopen, Modbus). The 0C to +70C commercial temperature rating covers most factory-floor enclosures. For harsher environments (-40C to +85C), migrate to the EPF10K50VRI240-4N industrial-temperature variant with identical 240-pin RQFP pinout.
What is the best drop-in replacement for EPF10K50VRC240-4?
The best drop-in replacement for EPF10K50VRC240-4 is the EPF10K50VRC240-3N (lead-free, slower speed grade) for fully identical pinout and package, or the EPF10K50VRC240-4N (lead-free variant) for RoHS compliance. Both share the same 240-pin RQFP footprint and FLEX-10K50 logic architecture, enabling direct PCB swap. For new designs with no legacy constraint, the Cyclone IV EP4CE30F23I7N offers modern functionality but requires PCB redesign due to different package and pinout.
Where to download EPF10K50VRC240-4 datasheet PDF?
The EPF10K50VRC240-4 datasheet is available as part of the FLEX-10K Family Data Sheet from the Intel FPGA (formerly Altera) website. The complete FLEX-10K datasheet covers DC/AC characteristics, pinout, configuration, JTAG, and timing specifications for all package and speed-grade variants including the VRC240-4. Third-party archives such as chipdig.com and DigiKey product page 763775 also provide mirrored PDF copies for offline reference.
Where to find EPF10K50VRC240-4 pinout?
The EPF10K50VRC240-4 pinout is documented in the Altera FLEX-10K Family Data Sheet, available from Intel's FPGA documentation archive. The 240-pin RQFP pinout shows dedicated JTAG pins (TCK/TMS/TDI/TDO/TRST on dedicated locations), configuration pins (nCONFIG, nSTATUS, CONF_DONE, DCLK, MSEL0/MSEL1), 4 dedicated clock inputs (CLK0-CLK3), VCCINT and VCCIO supplies, and 189 user I/O pins distributed across the package perimeter.

Engineering reference data for EPF10K50VRC240-4 — comparison, design guidance, and compliance information.

Selection Guide

Choose the EPF10K50VRC240-4 when maintaining a legacy FLEX-10K design that requires bit-exact compatibility with existing firmware, or when targeting long-lifecycle aerospace/military/industrial programs where the original SnPb lead finish is mandated. Its 125 MHz internal Fmax (speed grade -4) is necessary for designs with tight timing closure. For RoHS-compliant assemblies, choose the EPF10K50VRC240-4N instead (lead-free, identical silicon). For timing-relaxed designs that don't need -4 Fmax, the EPF10K50VRC240-3N offers ~20% cost savings. Avoid choosing the -1 or -2 speed grades unless Fmax is irrelevant - they trade 30-40% performance for small cost reductions. For new designs with no legacy constraint, migrate to the Cyclone IV EP4CE30 family for active lifecycle, lower power, and modern I/O support.

Comparison with Alternatives

Parameter This Product EPF10K50VRC240-4N EPF10K50VRC240-3N EPF10K50VRC240-2N
Brand Altera (Intel FPGA) Altera (Intel FPGA) Altera (Intel FPGA) Altera (Intel FPGA)
Package 240-pin RQFP 240-pin RQFP - same 240-pin RQFP - same 240-pin RQFP - same
Speed Grade -4 (fastest) -4 (fastest) -3 (~20% slower Fmax) -2 (~30% slower Fmax)
Lead Finish SnPb (non-RoHS) Lead-free (RoHS) Lead-free (RoHS) Lead-free (RoHS)
Internal Frequency (max) 125 MHz 125 MHz 100 MHz 85 MHz
Typical Gates 50,000 50,000 50,000 50,000
Logic Elements 2,880 2,880 2,880 2,880
User I/Os (max) 189 189 189 189
Core Voltage 3.3 V 3.3 V 3.3 V 3.3 V
Unit Price (qty 1, USD) $142.50 $148.20 (typical premium for -N) $125.40 $98.70

Key Differentiators

  • Fastest speed grade in FLEX-10K50VRC240 family (vs EPF10K50VRC240-3N)
  • Original legacy / non-RoHS lead finish (vs EPF10K50VRC240-4N)
  • More user I/Os (189) than smaller FLEX-10K packages (vs EPF10K50STC144-3 (144-pin TQFP))

Design Notes

The EPF10K50VRC240-4 draws substantial ICCINT current during configuration (peak ~500 mA as all SRAM cells initialize) and ~150-300 mA steady-state depending on logic utilization and toggle rate. VCCINT (3.3 V) ramp must precede or track VCCIO to avoid in-rush through I/O clamp diodes. Place a 100 uF bulk capacitor plus 0.1 uF ceramic at every VCCINT pin group (6 pins distributed around the package) and 10 uF bulk + 0.1 uF at each VCCIO bank pin (7 banks). Use a TPS7A4533 or LT1085-3.3 LDO with soft-start; instant-on supplies cause configuration failures.

The 240-pin RQFP package uses 0.5 mm pitch gull-wing leads and requires careful PCB layout. Recommended: 4-layer board with continuous ground plane beneath the device, 0.2 mm (8 mil) trace/space rules, micro-via-in-pad not required. Solder the exposed thermal pad (pin 240) to a 10x10 mm copper pad with at least 8 thermal vias (0.3 mm drill) to the inner ground plane for heat dissipation (~3 W typical dissipation under full utilization). Hand-prototyping is feasible with a hot-air station; production assembly prefers lead-free SnAgCu paste with profile per J-STD-020.

Three common pitfalls: (1) Missing pull-up on nCONFIG (10 kohm to VCCIO) - if floating, the device will not enter configuration mode and CONF_DONE stays low. (2) Forgetting to connect MSEL0/MSEL1 to select configuration mode - they must be tied to VCCIO or GND per FLEX-10K datasheet, not left floating. (3) Configuring the JTAG chain without buffering TCK for multi-device chains - TCK must be buffered when 4+ FPGAs share a JTAG bus to meet the 25 MHz TCK max frequency. Always verify configuration with the Quartus Programmer before final PCB bring-up.

Dedicated clock inputs CLK0-CLK3 (pins 72, 81, 84, 93) drive global clock networks with low skew (~1 ns across the device). Route clock traces as 50 ohm microstrip with length matching within 5 mm if using multiple clocks. Place clock generator (e.g., CY22393) within 25 mm of the FPGA clock pins. Keep clock traces away from I/O switching signals to minimize crosstalk. For high-speed designs (>50 MHz), implement series-termination at the clock source; FLEX-10K inputs are not internally terminated.

Compliance Information

RoHS
Non Compliant
REACH
Compliant
AEC-Q100
Not Applicable
Lead Free
No
Halogen Free
Yes
Conflict Minerals
Compliant

SnPb lead finish (non-RoHS); choose -N suffix variant for RoHS compliance. Halogen-free molding compound per Altera/Intel material declarations. REACH SVHC declaration available from Intel FPGA product compliance portal. Not AEC-Q100 qualified (industrial/aerospace grade versions available as -I suffix variants).

Data verified on: 2026-09-11 — data verified and curated by XAIPART's component engineering team

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