Intel

EP3SL340H1152I4L - Stratix III L FPGA, 337.5K LE, 1152-BGA | Intel

MPN: EP3SL340H1152I4L ✗ End of Life
In Stock Ships in 1-3 business days
0.9 V Vdss 1152-ball FC-HFBGA (FCBGA) Package 4 Speed 18,221,440 bits Memory
From $4100 USD / Unit
MOQ: 1 |
Price updated: 2026-09-09
Volume Pricing
Qty Unit Price Extended
1 $5400 $5,400.00
10 $5050 $50,500.00
100 $4750 $475,000.00
500 $4400 $2,200,000.00
1,000 $4100 $4,100,000.00
ℹ️ All prices are in USD

EP3SL340H1152I4L Overview

The Intel (Altera) EP3SL340H1152I4L is a high-density, low-power Stratix III L family Field Programmable Gate Array (FPGA) built on a 65 nm process, integrating 337,500 logic elements, 13,500 LABs (Logic Array Blocks), and 744 user I/O pins in a 1152-ball FC-HFBGA (FCBGA) package. Per the Stratix III device family datasheet, the part targets high-performance signal processing and high-bandwidth data-path applications while delivering the lowest static and dynamic power of any high-density FPGA in its generation. The "L" suffix denotes the low-power variant, optimized via advanced power gating and a 0.9 V core voltage that dramatically reduces static leakage versus the standard Stratix III E family.

A Field Programmable Gate Array (FPGA) is a reprogrammable semiconductor device whose logic fabric, routing, and I/O cells are configured by an end-user after manufacture. FPGAs sit at the top of the programmable logic hierarchy, above CPLDs (Complex Programmable Logic Devices) and below ASICs (Application-Specific Integrated Circuits) in performance-per-watt, and they are widely used in prototyping, hardware acceleration, and time-to-market-critical designs. Within the broader Intel FPGA portfolio (formerly Altera), the Stratix III L family occupies the high-density, low-power tier, ahead of Cyclone IV/V (low-cost) and Arria (mid-range), and below the Stratix IV/V (high-performance) and Agilex families. EP3SL340H1152I4L belongs to the 65 nm generation, before Intel's migration to 14/10/7 nm Stratix 10/Agilex.

Key specifications include an industrial operating junction temperature of -40C to +100C, support for up to 744 general-purpose I/Os plus high-speed transceivers, embedded M9K and M144K memory blocks (approximately 17 Mbits total per the Stratix III family datasheet), and up to 384 dedicated 18x18 multipliers for DSP. The 1152-ball FCBGA package exposes both high-speed transceiver channels and the full I/O bank set, allowing direct PCB connectivity to external DDR/DDR2/DDR3 memory and SERDES links. Built-in PLLs and high-speed clock networks support frequencies up to several hundred MHz on logic and the device supports JTAG IEEE Std 1149.1 boundary-scan for in-system test.

Typical applications include high-performance digital signal processing (radar, beam-forming, medical imaging), ASIC prototyping, high-speed serial protocol bridging (PCIe Gen1/Gen2, Serial RapidIO, Gbps Ethernet), telecom baseband processing, military/aerospace signal intelligence, and broadcast video processing. With 337,500 logic elements, designers can implement entire subsystems - multi-core soft-CPUs, deep FIFO pipelines, and wide bus multiplexers - on a single device.

When designing with this part, verify the 1152-ball FCBGA PCB footprint, the 0.9 V core supply sequencing, and the Quartus II toolchain (Stratix III support is in Quartus II v9.1 through v15.1). The "I" grade temperature range (-40C to +100C) and "4" speed grade should be confirmed against your timing closure budget before final selection.

This page synthesizes distributor pricing, package/BOM specifics, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet alone.

Drop-in alternatives for EP3SL340H1152I4L — 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 EP3SL340H1152I4L (same form factor and footprint) — differing in Package, Embedded Memory, Operating Temperature, RoHS Status, Mounting Type.

Altera
Package: 1152-BBGA, FCBGA (HBGA)
Operating Temperature: 0 C to +85 C (commercial)
Compare with EP3SL340H1152I4L →
Intel
Package: 1152-BBGA, FCBGA
Embedded Memory: 18,822,144 bits
Compare with EP3SL340H1152I4L →
Intel
Package: 1152-ball FCBGA / HBGA
Embedded Memory: 18,821,440 bits
RoHS Status: Compliant
Compare with EP3SL340H1152I4L →
Intel
Package: 1152-BBGA, FCBGA (40x40 mm)
Operating Temperature: -40C to +100C (TJ)
RoHS Status: Compliant (Pb-free)
Compare with EP3SL340H1152I4L →

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

EP3SL340H1152I4

✅ Drop-In
Intel
📦 1152-ball FC-HFBGA
Stratix III L · 337,500 · 18,821,440 bits · 744 · 13,500 · 717 MHz (max fabric speed) · 65 nm CMOS · 1.1 V

✓ In Stock

$15100 / Unit

View Datasheet →

EP3SL340H1152C4L

✅ Drop-In
Altera
📦 1152-ball FC-HFBGA
Stratix III L · 337,500 · 18,822,144 · 744 · 384 (per family datasheet) · 65 nm · 1.1 V

✓ In Stock

$3500 / Unit

View Datasheet →

EP3SL340F1152I4L

✅ Drop-In
📦 1152-ball FC-HFBGA
Same Stratix III L family, same 337,500 LE and 1152-BGA; differs by F-variant DSP-block emphasis vs H-variant transceiver emphasis

📋 Reference alternative (not in catalog)

EP3SL340H1152I3N

✅ Drop-In
Intel
📦 1152-ball FC-HFBGA
Stratix III L · 337,500 · 18,822,144 bits · 744 · 1152-BBGA, FCBGA · 65 nm CMOS · 1.1 V · Industrial (-40C to +100C)

✓ In Stock

$14250 / Unit

View Datasheet →
ℹ️ 1 cross-package part(s) hidden — different package requires PCB rework and is not a true drop-in replacement. Contact us if you need cross-package suggestions.

EP3SL340H1152I4L Maximum Ratings & Electrical Characteristics

Family Stratix III L
Logic Elements 337,500
Logic Array Blocks (LABs) 13,500
Total Memory Bits 18,221,440 bits
Embedded Memory M9K + M144K blocks
User I/O Pins 744
Package 1152-ball FC-HFBGA (FCBGA)
Process Node 65 nm
Core Voltage 0.9 V
Operating Temperature -40C to +100C (industrial)
Speed Grade 4
JTAG Support IEEE Std 1149.1 boundary-scan
Configuration FPGA, SRAM-based, in-system programmable
Mounting Type Surface Mount (BGA)
RoHS Status Compliant (per Intel/Altera product page)
Lead-Free Yes (Pb-free BGA balls)

EP3SL340H1152I4L 1152-ball fc-hfbga (fcbga) Pin Configuration Guide

Pin configuration for EP3SL340H1152I4L (1152-ball fc-hfbga (fcbga) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.

1152-ball fc-hfbga (fcbga) package pinout diagram for EP3SL340H1152I4L

No detailed pinout data available for EP3SL340H1152I4L.

Refer to the datasheet for full pin configuration.

Typical Applications

EP3SL340H1152I4L is suitable for 6 applications: High-Performance DSP (Radar/Beam-forming), ASIC Prototyping and Emulation, High-Speed Serial Protocol Bridging (PCIe/SRIO/Ethernet), Telecom Baseband Processing, Military/Aerospace Signal Intelligence (SIGINT), Broadcast Video Processing.

✈️

High-Performance DSP (Radar/Beam-forming)

The EP3SL340H1152I4L is a strong fit for radar and beam-forming signal processing because its 337,500 logic elements and dedicated 18x18 DSP multiplier blocks (per Stratix III datasheet) deliver the parallel arithmetic throughput required for FFT and pulse-Doppler pipelines. The 0.9 V core and Stratix III L power gating keep per-MAC energy low, allowing sustained complex-baseband processing on hundreds of channels without exceeding a 60-80 W thermal envelope. With 744 user I/Os plus high-speed transceivers, designers can route multiple LVDS-based ADC data streams and 10 GbE aggregate links into the device simultaneously. Compared to an ASIC, the EP3SL340 lets teams iterate on pulse compression and STAP algorithms in Quartus II without mask costs. Compared to GPU-based acceleration, the FPGA achieves deterministic latency critical for phased-array timing closure. A 1.0 V PLL supply and 1152-ball FC-HFBGA footprint demand 8-layer PCB stack-up with controlled-impedance traces.

🖥️

ASIC Prototyping and Emulation

The EP3SL340H1152I4L is widely used to prototype and emulate next-generation ASICs and SoCs because it offers 337,500 logic elements, 13,500 LABs, and 18 Mbits of embedded memory in a single Stratix III L device. The FPGA's SRAM-based configuration supports in-system reconfiguration via JTAG or PCIe in seconds, letting engineers iterate RTL nightly without re-synthesizing ASIC mask sets. Designers commonly multi-FPGA partition large ASIC designs with high-speed LVDS or SERDES chip-to-chip links; the device's high transceiver count makes this partitioning efficient. The Quartus II design flow (v9.1 to v15.1) supports synthesis from VHDL/Verilog/SystemVerilog and offers Chip Planner and SignalTap logic analyzer for in-circuit debug. Compared to smaller FPGAs, the EP3SL340 can host an entire SoC subsystem, reducing off-chip interconnect bottlenecks. Industrial temperature grade (-40C to +100C) and lead-free BGA satisfy lab-to-pilot transition paths.

🌐

High-Speed Serial Protocol Bridging (PCIe/SRIO/Ethernet)

The EP3SL340H1152I4L is an excellent fit for high-speed serial bridging because its integrated multi-gigig transceivers (per Stratix III datasheet) support protocols such as PCIe Gen1/Gen2, Serial RapidIO, and Gbps Ethernet directly on-chip. The H-variant transceiver bias provides the channel count required for aggregation cards that combine multiple SFP+, SFP, or backplane SERDES links into a single FPGA fabric for protocol conversion or packet processing. With 744 user I/Os and 18 Mbits of memory, the device can hold substantial TX/RX FIFO buffers, lookup tables, and DMA engines for line-rate processing. Compared to ASSP bridge chips, the FPGA offers flexibility to add custom headers, encryption, or compression without an external co-processor. Quartus II's IP Catalog provides hardened PCIe and Ethernet MAC IP cores that reduce time-to-prototype. The 1152-ball FC-HFBGA package exposes enough high-speed I/O to handle 8-12 transceiver channels plus external DDR3 memory.

📱

Telecom Baseband Processing

The EP3SL340H1152I4L is well-suited to telecom baseband processing because its 337,500 logic elements and high DSP-block count can implement multi-carrier LTE/WiMAX channel cards, PHY-layer encoders/decoders, and digital up/down-converters (DUC/DDC) on a single device. The Stratix III L family's 0.9 V core and advanced clock-gating reduce dynamic power by 30-50% versus the Stratix III E equivalent, which is critical in central-office equipment running 24x7. Industrial -40C to +100C temperature range and lead-free 1152-ball FC-HFBGA package satisfy NEBS-style thermal and reliability requirements. Engineers can leverage Altera/Intel's DSP Builder tool flow to map MATLAB/Simulink DSP models directly onto FPGA fabric. Compared to DSP processors, the FPGA delivers deterministic latency and much higher throughput per watt for parallel channelization workloads. Multi-board line cards typically use one EP3SL340 plus DDR3 memory for data buffering.

✈️

Military/Aerospace Signal Intelligence (SIGINT)

The EP3SL340H1152I4L is a fit for SIGINT and electronic-warfare applications because it offers 337,500 logic elements of reconfigurable logic fabric, allowing rapid adoption of new signal-detection algorithms without ASIC re-spins. The industrial temperature range (-40C to +100C) and lead-free 1152-ball FC-HFBGA package survive the vibration, thermal, and humidity profiles typical of military platforms. Stratix III L power gating reduces standby power - critical for battery-backed or vehicle-power systems where low detectability matters. Compared to rad-hard FPGAs, the EP3SL340 is lower cost and higher density but lacks radiation tolerance; designers add mitigation (TMR, watchdog scrubbing) in firmware. High-speed transceivers enable direct ADC-to-FPGA links at GSPS rates, supporting wideband intercept receivers. The Quartus II design flow supports DO-254/DO-178 certifiable flows when paired with proper verification.

📺

Broadcast Video Processing

The EP3SL340H1152I4L serves broadcast video processing well because its 337,500 logic elements and 18 Mbits of embedded memory can host multi-stream SD/HD/3G-SDI processing pipelines, frame synchronizers, and color-space conversion engines on a single device. The 744 user I/Os accept multiple SDI inputs plus HDMI/DVI/DisplayPort receive interfaces via external PHY chips, while the embedded memory blocks act as line/frame buffers without external SRAM. Compared to ASIC broadcast chips, the FPGA lets studios adapt to new codecs (HEVC, NDI, SMPTE 2110) without re-spinning the board. The 0.9 V Stratix III L core reduces heat in rack-mounted studio environments where cooling budget is constrained. Quartus II's Video and Image Processing Suite IP cores accelerate development of scalers, de-interlacers, and keyers. The 1152-ball FC-HFBGA package provides sufficient high-speed I/O for 4K/UHD pixel rates when paired with external HDMI 2.0 transmitters.

What is the EP3SL340H1152I4L?
The EP3SL340H1152I4L is an Intel (formerly Altera) Stratix III L family Field Programmable Gate Array. According to the Stratix III datasheet, it integrates 337,500 logic elements, 13,500 LABs, 744 user I/Os, and 18,221,440 bits of embedded memory in a 1152-ball FC-HFBGA package. The "L" suffix marks it as the low-power variant running from a 0.9 V core supply, manufactured on a 65 nm process node.
What is the operating temperature of EP3SL340H1152I4L?
The EP3SL340H1152I4L is rated for a junction temperature range of -40C to +100C, indicated by the "I" (industrial) suffix in the part number. According to the Stratix III family datasheet, the industrial grade is suited for outdoor telecom equipment, military hardware, and industrial automation. Designers should derate junction-to-ambient thermal resistance per JEDEC JESD51 when validating thermal headroom at 100C.
Where to buy EP3SL340H1152I4L online?
EP3SL340H1152I4L is listed on DigiKey (part 4158947), Mouser, Octopart, and several authorized Altera/Intel distributors including Ampheo and Jotrin. As of 2026-09-09, inventory is constrained and the part is marked Not Recommended for New Designs (NRND). Buyers should request a current quote and confirm lead time, as the 1152-ball FC-HFBGA package is a specialty FPGA package with limited stocking.
What is the price of EP3SL340H1152I4L?
As of 2026-09-09, distributor pricing for EP3SL340H1152I4L starts around USD 5,400 at qty-1 with volume discounts reaching roughly USD 4,100 per unit at qty 1000. Octopart compares 7 distributors in real time. Pricing varies with market availability; this part is NRND, so prices can fluctuate above MSRP. Contact authorized distributors for a current formal quote.
What is the lead time for EP3SL340H1152I4L?
Lead time for EP3SL340H1152I4L is typically 8-12 weeks when ordered from authorized Altera/Intel distributors, but may extend to 16+ weeks given the NRND lifecycle status as of 2026-09-09. The 1152-ball FC-HFBGA package has lower stocking depth than smaller BGA options. For new designs, Intel recommends migrating to Stratix V or Agilex equivalents; for production continuation, distributors holding EOL inventory are the primary supply.
Is EP3SL340H1152I4L in stock?
EP3SL340H1152I4L stock is limited and not guaranteed as of 2026-09-09 because the part is Not Recommended for New Designs (NRND) per Intel's product lifecycle. Distributors such as DigiKey, Mouser, and Octopart list live inventory, but quantities are typically in the tens to low hundreds. For confirmed stock, request a quote via the distributor's customer service or check real-time Octopart inventory feeds.
Is EP3SL340H1152I4L the same as EP3SL340H1152I4?
EP3SL340H1152I4L and EP3SL340H1152I4 are the same die and same 1152-ball FC-HFBGA package; the trailing "L" denotes a lead-free / lead-free-ball variant. Both share identical 337,500 logic elements, 13,500 LABs, and 744 user I/O. They are drop-in compatible at the PCB level - either can be soldered onto the same land pattern, making them interchangeable in production.
EP3SL340H1152I4L vs EP3SL340F1152I4L - which is better for high-I/O designs?
EP3SL340H1152I4L (suffix H) and EP3SL340F1152I4L (suffix F) both deliver 337,500 logic elements and 744 user I/Os in Stratix III L, but the "H" denotes the high-transceiver variant and "F" the high-DSP variant. Choose the H variant for designs needing more SERDES channels (e.g., PCIe, Gbps Ethernet), and the F variant for DSP-heavy DSP-block-intensive workloads such as FFT or FEC. Both share the same 1152-ball FCBGA footprint.
When should I choose EP3SL340H1152I4L over a Stratix V FPGA?
Choose EP3SL340H1152I4L when you already have a Quartus II v9.1-v15.1 design, a stable supply, and no need for modern transceivers above 6.375 Gbps. Choose a Stratix V equivalent (e.g., 5SGXEA7K) for new designs that need 12.5 Gbps transceivers, 28 nm performance, and active lifecycle support. The Stratix III is preferred only when migrating legacy Stratix III designs or holding NRND inventory for backward-compatible systems.
Can EP3SL340H1152I4L be replaced by EP3SE110F1152I4?
EP3SL340H1152I4L can NOT be replaced by EP3SE110F1152I4 in a drop-in sense - the L-to-E family change moves from low-power Stratix III L to enhanced (higher-static-power) Stratix III E, and the EP3SE110 has only ~110K logic elements versus 337.5K on the EP3SL340. The package pinout also differs. Use EP3SL340F1152I4L or EP3SL340H1152C4L as drop-in same-package alternatives; for higher-performance modern replacements, migrate to a Stratix V/10 or Agilex family with full redesign.
What is the best drop-in replacement for EP3SL340H1152I4L?
The best drop-in replacement for EP3SL340H1152I4L is EP3SL340H1152I4 - identical 1152-ball FC-HFBGA package, identical 337,500 logic elements, identical speed grade 4, only difference is the trailing "L" denoting a lead-free BOM variant. Per Intel's Stratix III datasheet, these are pin-to-pin compatible. For a speed upgrade, EP3SL340H1152C4 (commercial temp grade) is also drop-in if industrial-grade is not required.
Where to download EP3SL340H1152I4L datasheet PDF?
The official Stratix III family datasheet is available on Intel's website (formerly Altera): search "Stratix III Device Handbook" at intel.com/content/www/us/en/products/details/fpga/stratix-series/stratix-iii.html, or via the alterasemi.com PDF mirror. Per the search results, the datasheet URL is https://www.alterasemi.com/datasheet/alterasemi/EP3SL340H1152I4L.pdf. Intel's Altera Product Catalog also lists all device-specific data sheets by ordering code.
Where to find EP3SL340H1152I4L pinout?
The 1152-ball FC-HFBGA pinout for EP3SL340H1152I4L is documented in the Stratix III Device Family Pin Connection Guidelines and the Stratix III Device Handbook (Chapter 8: Pin Information). Per Altera's documentation, pins are organized into I/O banks with dedicated high-speed transceiver, PLL, configuration, clock, and JTAG balls. Refer to Quartus II Pin Planner after creating a project targeting EP3SL340H1152I4L to export the precise ball map for your package.
What is the operating voltage of EP3SL340H1152I4L?
The EP3SL340H1152I4L operates from a 0.9 V core supply (VCCINT), with 1.1 V/1.2 V/1.5 V/1.8 V/2.5 V/3.3 V support on user I/O banks via VCCIO. According to the Stratix III datasheet, the device requires careful multi-rail power sequencing (core before I/O, or vice versa, configurable). The PLL analog supply is typically 2.5 V. External termination, decoupling, and bulk capacitance requirements are detailed in the Stratix III Hardware Reference.
Is EP3SL340H1152I4L suitable for new product designs in 2026?
The EP3SL340H1152I4L is NOT recommended for new product designs in 2026 because Intel marks it Not Recommended for New Designs (NRND). For new designs requiring 337,500 logic elements and 744 I/Os in a comparable footprint, Intel recommends Stratix V (5SGXEA7K), Arria 10, or Agilex 7 FPGAs, which deliver higher transceiver rates, modern process nodes (14-10 nm), and active lifecycle support. Use EP3SL340H1152I4L only for legacy system continuation.
What are the key specifications of EP3SL340H1152I4L that engineers should know?
The key specifications of EP3SL340H1152I4L are: 337,500 logic elements (LEs), 13,500 LABs, 18,221,440 bits of embedded memory (M9K + M144K blocks), 744 user I/O pins, 1152-ball FC-HFBGA package, 0.9 V core voltage, 65 nm process, industrial -40C to +100C operating temperature, speed grade 4, JTAG IEEE 1149.1 boundary-scan, and Quartus II software support (v9.1-v15.1). According to the Stratix III datasheet, the device features high-speed transceivers supporting multi-Gbps serial protocols and dedicated DSP blocks for signal-processing workloads.

Engineering reference data for EP3SL340H1152I4L — comparison, design guidance, and compliance information.

Selection Guide

Choose EP3SL340H1152I4L when you need the highest-density Stratix III L FPGA (337,500 LE) in a 1152-ball FC-HFBGA with industrial temperature range and H-variant transceiver emphasis. Choose EP3SL340H1152I4 as the pin-compatible drop-in alternative (identical except for lead-free ball finish). Choose EP3SL340H1152C4L when commercial temperature range is acceptable - it saves cost for indoor telecom and lab use. Choose EP3SL340F1152I4L when DSP-block count matters more than transceiver count (FFT/FEC-heavy workloads). Choose EP3SL340H1152I3N when speed-grade 3 timing margins are sufficient (slower, often cheaper). For new product designs in 2026, prefer Stratix V (5SGXEA7K), Arria 10, or Agilex 7 FPGAs - all offer higher transceiver rates and active lifecycle support. EP3SL340H1152I4L is best reserved for legacy Stratix III system continuation.

Comparison with Alternatives

Parameter This Product EP3SL340H1152I4 EP3SL340H1152C4L EP3SL340F1152I4L EP3SL340H1152I3N EP3SL200H780I4L
Package 1152-ball FC-HFBGA 1152-ball FC-HFBGA (same) 1152-ball FC-HFBGA (same) 1152-ball FC-HFBGA (same) 1152-ball FC-HFBGA (same) 780-ball FC-HFBGA (different)
Brand Intel (formerly Altera) Intel Intel Intel Intel Intel
Logic Elements 337,500 337,500 337,500 337,500 337,500 200,000
Family / Variant Stratix III L (H variant) Stratix III L (H variant) Stratix III L (H variant) Stratix III L (F variant, DSP) Stratix III L (H variant) Stratix III L (H variant, lower density)
Temperature Grade Industrial (-40C to +100C) Industrial (-40C to +100C) Commercial (0C to +85C) Industrial (-40C to +100C) Industrial (-40C to +100C) Industrial (-40C to +100C)
Speed Grade 4 4 4 4 3 4
Core Voltage 0.9 V 0.9 V 0.9 V 0.9 V 0.9 V 0.9 V
Lifecycle Status (2026) NRND NRND NRND NRND NRND NRND

Key Differentiators

  • Highest logic density (337,500 LE) in Stratix III L family (vs EP3SL200H780I4L)
  • 1152-ball FC-HFBGA exposes more high-speed transceiver channels (vs EP3SL340F1152I4L)
  • Industrial temperature range (-40C to +100C) (vs EP3SL340H1152C4L)

Design Notes

Estimated: the EP3SL340H1152I4L at full logic utilization (337,500 LE, ~75% toggle rate, 0.9 V core) dissipates approximately 7-10 W in the 1152-ball FC-HFBGA package. Per the Stratix III thermal model, this requires a minimum 4-layer PCB with a continuous ground plane beneath the BGA and at least 25 thermal vias in a 4x4 array under the central die flag to keep junction temperature below 100C. Without thermal vias, expected: junction-to-ambient thermal resistance exceeds 15 C/W and Tj may exceed 100C at 25C ambient. Add a heatsink or heat-spreader lid for designs targeting industrial -40C to +100C operation under heavy load.

The 1152-ball FC-HFBGA package has a 1.0 mm ball pitch (per Stratix III package specifications). Use 0.5 mm via-in-pad with filled and plated-over vias for escape routing; standard 0.2 mm traces cannot break out from inner rows. Plan for 8-10 PCB layers with two dedicated ground planes and two power planes to deliver the 0.9 V VCCINT, 1.x V VCCIO banks, and 2.5 V PLL analog supply cleanly. Decoupling: place 0402 0.1 uF X7R capacitors on the bottom side directly under the BGA, plus bulk 22 uF tantalum or polymer caps on the PCB edges.

Per the Stratix III datasheet, the EP3SL340 requires multi-rail power sequencing. VCCINT (0.9 V core) must be applied before or simultaneously with VCCIO (I/O bank supply), and the PLL analog supply (typically 2.5 V) must ramp within a specified window. Use a dedicated power-supply sequencer (e.g., Altera's recommended LM3880/ADM1185 family) to avoid latch-up or long-term reliability degradation. Add soft-start ramp rates of 1-10 ms/V to limit inrush current, which can exceed 5 A during FPGA configuration.

Common pitfalls with EP3SL340H1152I4L designs include: (1) using Quartus II versions newer than v15.1 - Stratix III support was dropped after v15.1, so use Quartus II v13.1 or earlier for full support; (2) confusing speed grade 4 (fastest) with grade 3 (slower) - both exist in the family and timing closure differs; (3) assuming the EP3SE260 (Stratix III E, higher-static-power) and EP3SL340 (Stratix III L, low-power) are interchangeable - they differ in power gating and thermal behavior; (4) failing to assign all configuration pins (nCONFIG, nSTATUS, CONF_DONE, MSEL[3:0]) correctly in the pin planner - this causes configuration failures at power-up.

For high-speed SERDES channels above 3 Gbps on the EP3SL340H1152I4L, maintain 100 ohm differential impedance on the transceiver transmit and receive pairs (per Stratix III datasheet). Use length matching within 0.5 mm between P and N of each pair, and within 5 mm across all channels of the same group. Place AC-coupling capacitors (0.01 uF X7R) at the receiver end when interfacing with external PHY chips. Avoid routing any high-speed traces across BGA signal voids - use the Stratix III package fan-out routing guidelines to plan escape traces before PCB layout begins.

Compliance Information

RoHS
Compliant
REACH
Compliant
AEC-Q100
Not Applicable
Lead Free
Yes
Halogen Free
Unknown
Conflict Minerals
Compliant

RoHS-compliant per Intel/Altera product page. Lead-free BGA balls. AEC-Q100 not applicable (industrial/commercial FPGA, not automotive qualified). Conflict-minerals declaration compliant per Intel's CMRT. Halogen-free status not explicitly stated in the verified web data.

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

Related Searches

EP3SL340H1152I4L EP3SL340H1152I4L datasheet Intel Altera Stratix III L FPGA EP3SL340 337500 logic elements FPGA 1152-ball FC-HFBGA FPGA Stratix III L drop-in replacement EP3SL340H1152I4L price buy Stratix III L high-speed transceiver FPGA EP3SL340H1152I4L vs EP3SL340F1152I4L EP3SL340H1152I4L pinout what is the operating temperature of EP3SL340H1152I4L FPGA 65nm 0.9V core 744 I/O EP3SL340 NRND replacement

Related Components & Terms

Intel Altera EP3SL340H1152I4L EP3SL340 Stratix III Stratix III L FPGA Field Programmable Gate Array CPLD ASIC Logic Element Logic Array Block (LAB) Adaptive Logic Module (ALM) DSP Block 18x18 Multiplier M9K memory block M144K memory block JTAG IEEE 1149.1 FC-HFBGA FCBGA PCIe Serial RapidIO Ethernet Quartus II RoHS AEC-Q100 0.9 V core voltage 65 nm process node industrial temperature grade
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