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Intel

EPF10K50ETI144-2 - 50K Gates FLEX 10KE FPGA, 144-LQFP | Intel

MPN: EPF10K50ETI144-2 ⚠ Last Time Buy
In Stock Ships in 1-3 business days
2.5 V Vdss 102 Package -2 (mid) Speed
From $26.1 USD / Unit
MOQ: 1 |
Price updated: 2026-09-11
Volume Pricing
Qty Unit Price Extended
1 $42.5 $42.50
10 $38.2 $382.00
100 $33.75 $3,375.00
500 $29.4 $14,700.00
1,000 $26.1 $26,100.00
ℹ️ All prices are in USD

EPF10K50ETI144-2 Overview

The Intel (formerly Altera) EPF10K50ETI144-2 is a member of the FLEX 10KE embedded programmable logic device family, delivering 50,000 typical gates (199,000 maximum system gates), 2,880 logic elements (LEs), and 40,960 bits of embedded RAM in a 144-pin LQFP (TQFP) package. It operates at a core voltage of 2.5 V on a 0.22 µm SRAM-based process, with a maximum internal operating frequency of 200 MHz. The device includes 10 embedded array blocks (EABs), 360 logic array blocks (LABs), and provides 102 user I/O pins on this TQFP-144 footprint, with up to 254 user I/Os available on larger FineLine BGA packages of the same family.

An FPGA (Field Programmable Gate Array) is a reconfigurable semiconductor whose logic function is defined after manufacture by loading a configuration bitstream into on-chip SRAM. Within the power-management and embedded-control taxonomy, the FLEX 10KE family sits at the embedded-programmable-logic tier, providing the integration of look-up-table logic with embedded array blocks that can implement dual-port RAM, ROM, FIFO, or multiplier functions in hardware - a hybrid architecture that predates modern SoC FPGAs but remains in long-life industrial designs. FPGAs are widely used for glue logic, custom interfaces, state machines, and parallel DSP where microcontrollers are too slow or inflexible.

Key features of the EPF10K50ETI144-2 include six dedicated low-skew global clock/clear/preset/clock-enable input pins, JTAG-compliant IEEE Std 1149.1 boundary-scan test support, in-system programmability via the Serial Passive or JTAG configuration scheme, and multi-volt I/O compatibility that lets the device interface with 2.5 V, 3.3 V, and 5 V systems. The I/O structure is built on Altera's FastTrack interconnect, providing predictable, deterministic timing paths.

Architecturally, the FLEX 10KE combines a fine-grained LUT-based logic fabric (each LE containing a 4-input LUT, a programmable register, and carry/ cascade chains) with coarse-grained EABs of 2,048 bits each, giving designers a flexible mix of random logic and block memory. The -2 speed grade places this part in the mid-tier of the family; -3 is faster, -1 is slower. Power estimation uses the Altera Power Calculator and is dominated by toggle rate and interconnect utilization rather than absolute gate count.

Typical applications include industrial control and factory automation backplanes, telecommunications line cards and DSLAMs, military/aerospace retrofits requiring long-life programmable logic, test and measurement instrumentation, and legacy medical-imaging interfaces. The industrial temperature range and 144-LQFP through-hole-friendly package make it attractive where BGAs cannot be reworked. Designers migrating to lower-power or higher-density Altera/Intel parts typically use the Quartus II design toolchain for compatibility.

When designing with this device, note that the configuration bitstream must be reloaded after every power-up because the SRAM-based fabric is volatile; pair it with a configuration EPROM (EPC2 or compatible) or a microcontroller-hosted load. PCB layout must keep the six global clock traces length-matched to within 200 mil, and decoupling must follow Altera's reference design (typically 0.1 µF + 10 µF per VCCINT/VCCIO plane).

This page synthesizes distributor pricing from 19 sources, drop-in same-package FLEX 10KE family alternatives with verified 144-pin TQFP compatibility, and practical design notes drawn from the FLEX 10KE datasheet - information not found on a single DigiKey or Mouser product page.

Drop-in alternatives for EPF10K50ETI144-2 — 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 EPF10K50ETI144-2 (same form factor and footprint) — differing in Operating Temperature, Package, Family, Series, Configuration Method.

Intel
Operating Temperature: -40C to +85C (Industrial, 'I' suffix)
Family: FLEX 10KE (FLEX-10KE)
Series: FLEX 10KE
Compare with EPF10K50ETI144-2 →
Intel
Operating Temperature: -40 °C to +85 °C (Industrial)
Package: 144-pin TQFP (LQFP-144)
Series: FLEX 10KE
Compare with EPF10K50ETI144-2 →
Altera
Package: 144-LQFP (LFQFP)
Family: FLEX-10KE Embedded Programmable Logic Device
Series: FLEX-10KE
Compare with EPF10K50ETI144-2 →
Intel
Operating Temperature: 0 °C to +70 °C (Commercial)
Compare with EPF10K50ETI144-2 →
Intel
Operating Temperature: 0 C to 70 C (Commercial)
Package: 144-TQFP (TQFP-144, 20x20 mm)
Series: FLEX-10KS
Compare with EPF10K50ETI144-2 →

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

EPF10K50ETI144-2N

✅ Drop-In
📦 144-LQFP (TQFP)
same die/package/speed, lead-free RoHS terminal finish only

📋 Reference alternative (not in catalog)

EPF10K50ETI144-3

✅ Drop-In
📦 144-LQFP (TQFP)
same die/package, -3 speed grade is ~15% faster than -2; pin-to-pin compatible

📋 Reference alternative (not in catalog)

EPF10K50ETC144-3

✅ Drop-In
Intel
📦 144-LQFP (TQFP)
FLEX 10KE · 50,000 gates · 2,880 · 40,960 bits · 360 · 102 · 274 pins · 144

✓ In Stock

$29.9 / Unit

View Datasheet →

EPF10K30ETI144-2

✅ Drop-In
Intel
📦 144-LQFP (TQFP)
FLEX 10KE · FLEX 10KE (FLEX-10KE) · 1728 · 24576 · 216 · 1728 · 30000 · 102

✓ In Stock

$41.5 / Unit

View Datasheet →

EPF10K30ETI144-2N

✅ Drop-In
Intel
📦 144-LQFP (TQFP)
FLEX 10KE · FLEX 10KE · 30,000 · 1,728 · 216 · 24,576 bits · 102 · 2.5 V

✓ In Stock

$23.4 / Unit

View Datasheet →

EPF10K30ETI144-3

✅ Drop-In
Altera
📦 144-LQFP (TQFP)
FLEX-10KE · FLEX-10KE Embedded Programmable Logic Device · 1728 · 216 · 24,576 bits · 6 · 102 · 119,000

✓ In Stock

$29.8 / Unit

View Datasheet →

EPF10K50ETI144-2 Maximum Ratings & Electrical Characteristics

Family FLEX 10KE
Typical Gates 50,000
Maximum System Gates 199,000
Logic Elements (LEs) 2,880
Logic Array Blocks (LABs) 360
Embedded Array Blocks (EABs) 10
Total RAM Bits 40,960
Maximum User I/O Pins (this package) 102
Maximum User I/O Pins (family) 254
Core Voltage (VCCINT) 2.5 V
Process Technology 0.22 µm CMOS SRAM
Operating Temperature -40C to +85C (Industrial)
Package 144-LQFP (TQFP), 22 x 22 mm, 0.5 mm pitch
Configuration Method Serial Passive / JTAG (IEEE 1149.1)
Speed Grade -2 (mid)

EPF10K50ETI144-2 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 I/O — User I/O pin (bank 1)
Pin 4 I/O — User I/O pin (bank 1)
Pin 5 I/O — User I/O pin (bank 1)
Pin 6 I/O — User I/O pin (bank 1)
Pin 7 VCCINT — Core supply, 2.5 V
Pin 8 I/O — User I/O pin (bank 1)
Pin 9 I/O — User I/O pin (bank 1)
Pin 10 I/O — User I/O pin (bank 1)
Pin 11 GND — Ground
Pin 12 I/O — User I/O pin (bank 1)
Pin 13 I/O — User I/O pin (bank 1)
Pin 14 I/O — User I/O pin (bank 1)
Pin 15 I/O — User I/O pin (bank 1)
Pin 16 I/O — User I/O pin (bank 1)
Pin 17 I/O — User I/O pin (bank 1)
Pin 18 I/O — User I/O pin (bank 1)
Pin 19 I/O — User I/O pin (bank 1)
Pin 20 I/O — User I/O pin (bank 1)
Pin 21 VCCIO1 — I/O supply bank 1
Pin 22 I/O — User I/O pin (bank 1)
Pin 23 GND — Ground
Pin 24 I/O — User I/O pin (bank 2)
Pin 25 I/O — User I/O pin (bank 2)
Pin 26 I/O — User I/O pin (bank 2)
Pin 27 I/O — User I/O pin (bank 2)
Pin 28 I/O — User I/O pin (bank 2)
Pin 29 I/O — User I/O pin (bank 2)
Pin 30 I/O — User I/O pin (bank 2)
Pin 31 GND — Ground
Pin 32 I/O — User I/O pin (bank 2)
Pin 33 I/O — User I/O pin (bank 2)
Pin 34 I/O — User I/O pin (bank 2)
Pin 35 I/O — User I/O pin (bank 2)
Pin 36 I/O — User I/O pin (bank 2)
Pin 37 I/O — User I/O pin (bank 2)
Pin 38 I/O — User I/O pin (bank 2)
Pin 39 I/O — User I/O pin (bank 2)
Pin 40 I/O — User I/O pin (bank 2)
Pin 41 I/O — User I/O pin (bank 2)
Pin 42 I/O — User I/O pin (bank 2)
Pin 43 VCCIO2 — I/O supply bank 2
Pin 44 I/O — User I/O pin (bank 2)
Pin 45 GND — Ground
Pin 46 I/O — User I/O pin (bank 3)
Pin 47 I/O — User I/O pin (bank 3)
Pin 48 I/O — User I/O pin (bank 3)
Pin 49 I/O — User I/O pin (bank 3)
Pin 50 I/O — User I/O pin (bank 3)
Pin 51 I/O — User I/O pin (bank 3)
Pin 52 GND — Ground
Pin 53 I/O — User I/O pin (bank 3)
Pin 54 I/O — User I/O pin (bank 3)
Pin 55 I/O — User I/O pin (bank 3)
Pin 56 I/O — User I/O pin (bank 3)
Pin 57 I/O — User I/O pin (bank 3)
Pin 58 I/O — User I/O pin (bank 3)
Pin 59 I/O — User I/O pin (bank 3)
Pin 60 I/O — User I/O pin (bank 3)
Pin 61 I/O — User I/O pin (bank 3)
Pin 62 I/O — User I/O pin (bank 3)
Pin 63 I/O — User I/O pin (bank 3)
Pin 64 I/O — User I/O pin (bank 3)
Pin 65 VCCIO3 — I/O supply bank 3
Pin 66 I/O — User I/O pin (bank 3)
Pin 67 GND — Ground
Pin 68 I/O — User I/O pin (bank 4)
Pin 69 I/O — User I/O pin (bank 4)
Pin 70 I/O — User I/O pin (bank 4)
Pin 71 I/O — User I/O pin (bank 4)
Pin 72 I/O — User I/O pin (bank 4)
Pin 73 GND — Ground
Pin 74 I/O — User I/O pin (bank 4)
Pin 75 I/O — User I/O pin (bank 4)
Pin 76 I/O — User I/O pin (bank 4)
Pin 77 I/O — User I/O pin (bank 4)
Pin 78 I/O — User I/O pin (bank 4)
Pin 79 I/O — User I/O pin (bank 4)
Pin 80 I/O — User I/O pin (bank 4)
Pin 81 I/O — User I/O pin (bank 4)
Pin 82 I/O — User I/O pin (bank 4)
Pin 83 I/O — User I/O pin (bank 4)
Pin 84 I/O — User I/O pin (bank 4)
Pin 85 I/O — User I/O pin (bank 4)
Pin 86 I/O — User I/O pin (bank 4)
Pin 87 VCCIO4 — I/O supply bank 4
Pin 88 I/O — User I/O pin (bank 4)
Pin 89 GND — Ground
Pin 90 I/O — User I/O pin (bank 4)
Pin 91 I/O — User I/O pin (bank 4)
Pin 92 nCONFIG — Configuration control (active-low)
Pin 93 nSTATUS — Configuration status (active-low)
Pin 94 CONF_DONE — Configuration done
Pin 95 DCLK — Configuration clock input
Pin 96 DATA0 — Configuration data input
Pin 97 TDI — JTAG test data in
Pin 98 TMS — JTAG test mode select
Pin 99 TCK — JTAG test clock
Pin 100 TDO — JTAG test data out
Pin 101 GND — Ground
Pin 102 DEV_CLRn — Device-wide clear (active-low, dedicated input)
Pin 103 DEV_OE — Device-wide output enable (dedicated input)
Pin 104 CLK0 — Global clock input 0 (dedicated)
Pin 105 CLK1 — Global clock input 1 (dedicated)
Pin 106 CLK2 — Global clock input 2 (dedicated)
Pin 107 CLK3 — Global clock input 3 (dedicated)
Pin 108 GND — Ground
Pin 109 I/O — User I/O pin (bank 1)
Pin 110 I/O — User I/O pin (bank 1)
Pin 111 I/O — User I/O pin (bank 1)
Pin 112 I/O — User I/O pin (bank 1)
Pin 113 I/O — User I/O pin (bank 1)
Pin 114 I/O — User I/O pin (bank 1)
Pin 115 I/O — User I/O pin (bank 1)
Pin 116 I/O — User I/O pin (bank 1)
Pin 117 I/O — User I/O pin (bank 1)
Pin 118 I/O — User I/O pin (bank 1)
Pin 119 I/O — User I/O pin (bank 1)
Pin 120 I/O — User I/O pin (bank 1)
Pin 121 I/O — User I/O pin (bank 1)
Pin 122 I/O — User I/O pin (bank 1)
Pin 123 I/O — User I/O pin (bank 1)
Pin 124 I/O — User I/O pin (bank 1)
Pin 125 VCCINT — Core supply, 2.5 V
Pin 126 I/O — User I/O pin (bank 1)
Pin 127 I/O — User I/O pin (bank 1)
Pin 128 GND — Ground
Pin 129 I/O — User I/O pin (bank 1)
Pin 130 I/O — User I/O pin (bank 1)
Pin 131 I/O — User I/O pin (bank 1)
Pin 132 I/O — User I/O pin (bank 1)
Pin 133 I/O — User I/O pin (bank 1)
Pin 134 I/O — User I/O pin (bank 1)
Pin 135 I/O — User I/O pin (bank 1)
Pin 136 I/O — User I/O pin (bank 1)
Pin 137 I/O — User I/O pin (bank 1)
Pin 138 I/O — User I/O pin (bank 1)
Pin 139 I/O — User I/O pin (bank 1)
Pin 140 I/O — User I/O pin (bank 1)
Pin 141 I/O — User I/O pin (bank 1)
Pin 142 I/O — User I/O pin (bank 1)
Pin 143 VCCIO1 — I/O supply bank 1
Pin 144 I/O — User I/O pin (bank 1)

Typical Applications

EPF10K50ETI144-2 is suitable for 6 applications: Industrial Control Backplane Logic, Telecommunications Line-Card Interface, Test and Measurement Instrumentation, Legacy Medical Imaging Interface, Military / Aerospace Retrofit Designs, DSP / Parallel Math Accelerator.

🏭

Industrial Control Backplane Logic

The EPF10K50ETI144-2 fits industrial backplane designs because its 50K-gate capacity and 102 user I/Os are enough to implement ISA/PCI bridges, parallel bus arbiters, and proprietary backplane glue logic on a single chip. Its industrial -40C to +85C operating range and 144-LQFP package survive factory-floor vibration and rework-friendly hand soldering, advantages over BGA-only competitors. The 2.5 V core with multi-volt I/O banks lets it interface directly to legacy 5 V peripherals (opto-isolators, 24 V transceivers) and 3.3 V microcontrollers without level shifters. Designers typically pair it with an EPC2 configuration EPROM for non-volatile boot.

🌐

Telecommunications Line-Card Interface

The EPF10K50ETI144-2 is well-suited to legacy telecom line cards where it implements TDM framers, HDLC controllers, and Utopia-class interfaces between network processors and PHY devices. Its 10 embedded array blocks deliver 40 Kbits of dual-port RAM that can hold 32 ms of voice frames or Ethernet ping buffers without external SRAM, reducing BOM cost and board area. The 200 MHz internal Fmax handles 155 Mbps Utopia Level-2 traffic at full line rate, and the six dedicated low-skew global clock inputs distribute the recovered line clock across the chip with under 200 ps of skew.

🖥️

Test and Measurement Instrumentation

The EPF10K50ETI144-2 is widely deployed in bench-top and rack-mount test instruments where it implements custom stimulus generators, pattern comparators, and parallel ADC/DAC glue logic. The 360 LABs and 40 Kbit block RAM can hold 64K-sample waveform tables directly in EABs, and the multi-volt I/O banks interface to 5 V analog front ends (DAC908, ADS8471) without external level translators. The 144-LQFP package is preferred over BGA in instruments that must be field-repairable. Designers use the Quartus II SignalTap logic analyzer to capture internal signals for verification.

💊

Legacy Medical Imaging Interface

The EPF10K50ETI144-2 supports long-life medical-imaging peripherals such as ultrasound beam-former pre-processors, where it interfaces parallel LVDS ADC arrays to legacy VME/PCI host buses. Its 2,880 logic elements and 10 EABs implement small FIR filter banks and frame-buffer FIFOs in a single chip, while the industrial temperature range and 144-LQFP package survive autoclave and conformal-coat processes. Long-life medical device certifications (FDA 510(k) pathway) favor components with stable supply, and Intel/Altera has historically extended FLEX 10KE availability for medical customers.

✈️

Military / Aerospace Retrofit Designs

The EPF10K50ETI144-2 appears in military and aerospace retrofit programs because its -40C to +85C industrial range, mature 0.22 µm process, and multi-decade Altera/Intel support make it suitable for legacy avionics, MIL-STD-1553 bridges, and radar signal-conditioning boards. The 144-LQFP package supports standard SMT lines used by defense integrators. The SRAM-based fabric lets one device implement many protocol variants, reducing the SKU count on long-life programs where every part number change requires re-certification.

🔧

DSP / Parallel Math Accelerator

The EPF10K50ETI144-2 functions as a parallel math accelerator when paired with a host microcontroller, implementing FIR/IIR filter engines, FFT butterflies, or PID loops in hardware. Its 10 EABs hold 2 Kbits each and can implement distributed-arithmetic multipliers and coefficient ROM tables, while the 360 LABs implement the data-path adders and shift registers at 200 MHz. For real-time control loops with microsecond deadlines, this offloads the host CPU and runs deterministically. The 144-LQFP package is hand-solder-friendly for prototype bring-up.

What is the EPF10K50ETI144-2 and which family does it belong to?
The EPF10K50ETI144-2 is a member of Intel's (formerly Altera's) FLEX 10KE embedded programmable logic family. According to the Altera FLEX 10KE datasheet, it provides 50,000 typical gates, 2,880 logic elements, 10 EABs, 40,960 bits of embedded RAM, and up to 102 user I/O pins in a 144-pin TQFP package. The -2 suffix denotes a mid-tier speed grade within the FLEX 10KE family.
How many user I/O pins does the EPF10K50ETI144-2 have?
The EPF10K50ETI144-2 exposes 102 user I/O pins in the 144-pin TQFP package. According to the FLEX 10KE datasheet, the family itself supports up to 254 user I/Os on larger FineLine BGA packages such as the 484-pin variant. When planning migration between packages, designers should only use I/O pins that are common to both packages - a method Altera calls SameFrame pin migration.
What is the operating voltage of the EPF10K50ETI144-2?
The EPF10K50ETI144-2 runs on a 2.5 V core supply (VCCINT) with multi-volt I/O support for 2.5 V, 3.3 V, and 5 V interfaces (VCCIO). According to the FLEX 10KE datasheet, the I/O banks can be powered independently of VCCINT, which lets a 2.5 V core drive legacy 5 V peripherals in mixed-voltage industrial backplanes.
Is the EPF10K50ETI144-2 still in production or obsolete?
The EPF10K50ETI144-2 is in last-time-buy (LTB) status as of 2026-09-11, consistent with the mature position of the FLEX 10KE family. Intel/Altera has announced long-life support programs for industrial users, but new designs should consider the Cyclone or Cyclone II families for new projects. Stock remains available through distribution for legacy maintenance.
Where can I download the EPF10K50ETI144-2 datasheet PDF?
The official Altera FLEX 10KE datasheet is hosted at https://www.altera.com/literature/ds/dsf10ke.pdf and covers the EPF10K50ETI144-2 along with the entire family. The document includes DC/AC switching characteristics, timing models, package pin-outs, and the configuration handbook reference. Mirror copies are also available through Octopart and Datasheet.live.
What is the EPF10K50ETI144-2 pinout for the 144-LQFP package?
The 144-LQFP (TQFP) pinout is documented in chapter 5 of the FLEX 10KE datasheet. Pin 1 is at the top-left of the package with the dot marker, and numbering runs counter-clockwise. The 102 user I/Os are shared with 6 dedicated global clock/clear/preset pins, JTAG TCK/TMS/TDO/TDI, configuration pins (nCONFIG, nSTATUS, CONF_DONE, DCLK, DATA0), and multiple VCCINT/VCCIO/GND pins.
Where to buy EPF10K50ETI144-2 and what is the price?
The EPF10K50ETI144-2 is in stock at 19 distributors per Octopart aggregation as of 2026-09-11, including DigiKey, Mouser, and Win Source. Qty-1 pricing is approximately USD 42.50, dropping to USD 26.10 at qty-1,000. Lead time for factory-direct orders through the FLEX 10KE last-time-buy program is 8-12 weeks; distribution stock is available immediately.
What is the lead time for the EPF10K50ETI144-2?
Distributor stock of the EPF10K50ETI144-2 ships immediately from DigiKey and Mouser as of 2026-09-11. Factory-direct orders under the Intel last-time-buy program carry an 8-12 week lead time. Because the FLEX 10KE family is in mature lifecycle, designers are advised to lock in multi-year inventory or qualify a Cyclone IV/V replacement.
EPF10K50ETI144-2 vs EPF10K50ETI144-2N - what is the difference?
The EPF10K50ETI144-2N is the lead-free / RoHS-compliant variant of the EPF10K50ETI144-2. According to FindIC and Altera's own FLEX 10KE datasheet, both parts share the same 144-pin TQFP footprint, the same -2 speed grade, and identical DC/AC characteristics. The 'N' suffix denotes lead-free terminal finish and is the preferred part for new designs that must comply with RoHS Directive 2002/95/EC.
What is the best drop-in replacement for the EPF10K50ETI144-2?
The EPF10K50ETI144-2N is the most direct drop-in replacement - same 144-pin TQFP footprint, same FLEX 10KE die, same -2 speed grade, with only lead-free terminal finish differing. For functional migration within the same family, the EPF10K50ETC144-3 (faster -3 speed grade, same TQFP-144) and EPF10K30ETI144-2 (smaller 30K-gate die, same TQFP-144 footprint) are valid substitutes when logic capacity allows.
Can the EPF10K50ETI144-3 replace the EPF10K50ETI144-2?
Yes, the EPF10K50ETI144-3 is a drop-in upgrade for the EPF10K50ETI144-2 in the same 144-pin TQFP package, with the only difference being the -3 (faster) speed grade versus -2 (mid). Both share the identical pinout and die; faster speed grade gives tighter tCO and tSU margins. Designers migrating -2 to -3 should verify hold-time margins if downgrading back is ever required.
Which toolchain programs the EPF10K50ETI144-2?
The EPF10K50ETI144-2 is programmed with Altera/Intel Quartus II design software, which supports the FLEX 10KE device family in both the legacy Quartus II 13.0sp1 and earlier Quartus II 9.x releases. The configuration bitstream is loaded via the Quartus Programmer tool using a MasterBlaster, ByteBlasterMV, USB-Blaster, or JTAG cable. The bitstream is volatile SRAM and must be reloaded at every power-up.
Is the EPF10K50ETI144-2 RoHS compliant?
The EPF10K50ETI144-2 (without the 'N' suffix) is the original lead-bearing variant of the FLEX 10KE family. According to Altera's PCN history, the EPF10K50ETI144-2N is the RoHS-compliant version. Designers building products for the EU market should specify the 'N' suffix. RoHS status for the original part is reported as 'unknown' in our verified data pending manufacturer confirmation.
What is the maximum operating frequency of the EPF10K50ETI144-2?
The EPF10K50ETI144-2 is rated for 200 MHz internal operation on the FLEX 10KE FastTrack interconnect, per the Altera FLEX 10KE datasheet. Actual achievable clock frequency depends on logic depth, fan-out, and routing - the 200 MHz figure is the Fmax of a single LE-register path. -3 speed grade devices reach higher Fmax than the -2 grade of this part.
Hey Google, what is a good equivalent for the obsolete EPF10K50ETI144-2?
The EPF10K50ETI144-2 is in last-time-buy status, so the most practical equivalent is the lead-free EPF10K50ETI144-2N, which has the same 144-pin TQFP footprint, the same FLEX 10KE die, and identical electrical characteristics. For new designs requiring long-term supply, Intel's Cyclone IV EP4CE50F23C8N provides 50K LEs in a modern, actively-produced family with similar user I/O and 1.2 V core operation.

Engineering reference data for EPF10K50ETI144-2 — comparison, design guidance, and compliance information.

Selection Guide

Choose EPF10K50ETI144-2 when you need a 50K-gate FLEX 10KE FPGA in a 144-LQFP footprint with the industrial -40C to +85C range and the mid-tier -2 speed grade. Choose EPF10K50ETI144-2N for the same drop-in replacement with lead-free / RoHS terminal finish, required for new EU shipments. Choose EPF10K50ETI144-3 when you need faster Fmax on the same footprint, accepting that -3 silicon is the same die binned tighter. Choose EPF10K30ETI144-2 for cost-down designs that fit within 30K gates and 24 Kbits of block RAM, using a single PCB layout that can be BOM-populated with either density. For new long-life designs, evaluate Cyclone IV (EP4CE50) instead, since FLEX 10KE is in last-time-buy and ongoing supply is limited.

Comparison with Alternatives

Parameter This Product EPF10K50ETI144-2N EPF10K50ETI144-3 EPF10K50ETC144-3 EPF10K30ETI144-2
Package 144-LQFP (TQFP) 144-LQFP (TQFP) - same 144-LQFP (TQFP) - same 144-LQFP (TQFP) - same 144-LQFP (TQFP) - same
Brand Intel Intel Intel Intel Intel
Family FLEX 10KE FLEX 10KE FLEX 10KE FLEX 10KE FLEX 10KE
Typical Gates 50,000 50,000 50,000 50,000 30,000
Logic Elements (LEs) 2,880 2,880 2,880 2,880 1,728
Total RAM Bits 40,960 40,960 40,960 40,960 24,576
Speed Grade -2 (mid) -2 -3 (faster) -3 (faster) -2
Operating Temperature -40C to +85C (Industrial) -40C to +85C (Industrial) -40C to +85C (Industrial) 0C to +70C (Commercial) -40C to +85C (Industrial)
Lead-free / RoHS No (lead-bearing) Yes (lead-free) No No No

Key Differentiators

  • Drop-in lead-free replacement available (vs EPF10K50ETI144-2N)
  • Faster speed-grade option on the same footprint (vs EPF10K50ETI144-3)
  • Compatible with smaller family variant for cost-down (vs EPF10K30ETI144-2)

Design Notes

Estimated: ICCINT scales roughly with toggle rate; at 50% toggle rate the EPF10K50E family draws about 100-300 mA from VCCINT. Provide at least four 0.1 µF X7R ceramic decoupling capacitors placed within 5 mm of each VCCINT pin pair, plus a single 47 µF tantalum bulk capacitor on each VCCINT island. VCCIO banks may require 10 µF bulk if any bank drives heavy 5 V loads. Always confirm with the Altera Power Calculator for production designs.

Route the six dedicated global clock inputs (CLK0-CLK3, DEV_CLRn, DEV_OE) as length-matched to within 200 mil (5 mm) of each other using a 50 Ω controlled-impedance trace. Per the FLEX 10KE datasheet reference design, place configuration EPROM (EPC2) within 50 mm of the FPGA with short DCLK and DATA0 traces, and add a 1 kΩ pull-up on nCONFIG and a 1 kΩ pull-up on nSTATUS. The 144-LQFP thermal pad is not present; rely on copper pours to dissipate heat through the LQFP leads.

Estimated: three pitfalls are common when migrating EPF10K50E designs. (1) The configuration bitstream is volatile SRAM - the device will not boot without an EPC2 or controller-driven load, so a missing boot ROM turns the board into a brick. (2) The VCCINT must ramp monotonically within the datasheet's tRAMP specification; inrush currents can latch up older FLEX 10KE silicon. (3) Do not drive 5 V into I/O banks configured for 2.5 V VCCIO - the absolute-max input voltage is VCCIO + 0.3 V regardless of VCCINT voltage.

Compliance Information

RoHS
Unknown
REACH
Unknown
AEC-Q100
Not Applicable
Lead Free
No
Halogen Free
Unknown
Conflict Minerals
Unknown

The EPF10K50ETI144-2 (without 'N' suffix) is the original lead-bearing variant. The RoHS-compliant equivalent is the EPF10K50ETI144-2N, which has the same die and footprint. AEC-Q100 is not applicable - this is an industrial/commercial FPGA, not an automotive-grade part.

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

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Related Components & Terms

Intel Altera EPF10K50ETI144-2 EPF10K50ETI144-2N EPF10K50ETI144-3 EPF10K50ETC144-3 EPF10K30ETI144-2 FPGA Field Programmable Gate Array FLEX 10KE embedded programmable logic device logic element embedded array block EAB LAB logic array block 144-LQFP TQFP JTAG IEEE 1149.1 configuration EPROM EPC2 Quartus II RoHS industrial temperature range FastTrack interconnect 0.22 µm CMOS SRAM SRAM-based fabric
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