Intel

EPF10K40RC208-3N - Flex 10K FPGA 40K Gates 5V 208-RQFP | Intel

Name: EPF10K40RC208-3N - Flex 10K FPGA 40K Gates 5V 208-RQFP | Intel
Brand: Intel
SKU: EPF10K40RC208-3N
Price: 12.95 USD
Availability: InStock

N.º da peça: EPF10K40RC208-3N ✗ Fim de vida

Em estoque Enviado em 1 a 3 dias úteis

5 V Vdss 208-pin RQFP (Power QFP, 28x28 mm, gull-wing) Package 66.67 MHz Speed

A partir de $12.95 USD / unidade

MOQ: 1 |

Preço atualizado: 2026-09-11

Preços por volume

Qtd.	Preço unitário	Total
1	$28.5	$28,50
10	$24.9	$249,00
100	$19.75	$1.975,00
500	$15.4	$7.700,00
1.000	$12.95	$12.950,00

ℹ️ Todos os preços estão em USD

Ver datasheet (PDF) Ver alternativas

Quantidade

EPF10K40RC208-3N Visão geral

The Intel (formerly Altera) EPF10K40RC208-3N is a member of the Flex 10K family of FPGAs, featuring 40,000 equivalent gates, 2,304 logic elements (LEs) and 16,384 bits of embedded SRAM in a 208-pin RQFP (Power QFP) surface-mount package. It is built on a 0.42 µm CMOS SRAM process and operates from a 5 V supply, delivering a propagation delay of 0.6 ns and supporting internal clock frequencies up to 66.67 MHz per the manufacturer description, with 147 user I/O pins available on the RQFP-208 footprint.

The Flex 10K family was the industry's first embedded programmable logic device (PLD) family, providing System-on-a-Programmable-Chip (SOPC) integration. An FPGA (Field-Programmable Gate Array) is a reconfigurable integrated circuit whose logic blocks, routing and I/O cells are defined by a user-supplied bitstream stored in SRAM. Flex 10K sits in the broader taxonomy as PLD -> CPLD/FPGA -> programmable logic -> integrated circuit, and historically pioneered embedded-array blocks (EABs) used as on-chip ROM, RAM, or multiplier functions.

Key features of the EPF10K40RC208-3N include 2,304 logic elements, 16,384 bits (16 Kb) of embedded array SRAM, 147 user I/Os with multi-voltage I/O support (3.3 V and 5 V), and an exposed thermal pad option on the 208-BFQFP package. Speed grade -3 places it in the mid-speed bin of the family, and the -N suffix denotes a lead-free / Pb-free terminal finish.

The device uses a hierarchical interconnect architecture with embedded array blocks (EABs), look-up table (LUT)-based logic elements, and continuous FastTrack routing. Configuration is loaded from a serial PROM or microcontroller into on-chip SRAM cells, allowing unlimited in-system reconfiguration. MultiVolt I/O allows it to interface with both 3.3 V and 5 V peripherals on the same board, an important feature during the transition era of mixed-voltage logic.

Typical applications of the EPF10K40RC208-3N include glue logic replacement, custom peripheral controllers, industrial bus bridges, telecommunications line-card interface logic, and legacy industrial/embedded glue. It is also widely used to bridge legacy TTL/CMOS logic blocks and as a prototyping vehicle before migrating to a structured ASIC.

Design considerations include ensuring the JTAG configuration chain supports 5 V signaling, using a stable 5 V core supply, and following the MAX+PLUS II or Quartus design flow (where the EPF10K40 is still supported for legacy projects). Because this part has been in production since the late 1990s, lifecycle status should be confirmed before any new commitment.

This page consolidates distributor pricing, drop-in replacement candidates, and design notes that complement (but do not replace) the manufacturer datasheet and legacy configuration manuals.

Alternativas drop-in para EPF10K40RC208-3N — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.

Variantes desta série

Modelos da mesma série compatíveis como drop-in com EPF10K40RC208-3N (mesmo formato e footprint) — diferindo em Mounting Type, Operating Temperature.

EPF10K40RC208-4

Intel

✅ Drop-In ⚠️ Especificações não verificadas

📦 208-RQFP (Power QFP)

identical silicon, used as cross-reference for obsolete sourcing

📋 Alternativa de referência (fora do catálogo)

EPF10K40RC208-3N Classificações máximas e características elétricas

Family	Flex 10K
Logic Elements	2304
Equivalent Gates	40,000
Embedded SRAM	16,384 bits (16 Kb)
User I/Os	147
Encapsulamento	208-pin RQFP (Power QFP, 28x28 mm, gull-wing)
Process Technology	0.42 µm CMOS, SRAM-based
Propagation Delay	0.6 ns
Internal Frequency (max)	66.67 MHz
Core Supply Voltage	5 V
I/O Supply Voltage	3.3 V or 5 V (MultiVolt)
Temperatura de operação	0 °C to +70 °C (Commercial)
Terminal Finish	Lead-free / Pb-free (-N suffix)
Tipo de montagem	Surface Mount (Gull-wing)

Configuração de pinos do EPF10K40RC208-3N

Pino 1	I/O — User I/O (bank-dependent)
Pino 2	I/O — User I/O
Pino 3	I/O — User I/O
Pino 4	I/O — User I/O
Pino 5	I/O — User I/O
Pino 6	I/O — User I/O
Pino 7	I/O — User I/O
Pino 8	VCCINT — 5 V core supply
Pino 9	VCCIO — I/O supply voltage (3.3 V or 5 V)
Pino 10	I/O — User I/O
Pino 11	I/O — User I/O
Pino 12	I/O — User I/O
Pino 13	I/O — User I/O
Pino 14	I/O — User I/O
Pino 15	I/O — User I/O
Pino 16	I/O — User I/O
Pino 17	I/O — User I/O
Pino 18	I/O — User I/O
Pino 19	I/O — User I/O
Pino 20	GND — Ground
Pino 21	I/O — User I/O
Pino 22	I/O — User I/O
Pino 23	I/O — User I/O
Pino 24	I/O — User I/O
Pino 25	I/O — User I/O
Pino 26	I/O — User I/O
Pino 27	I/O — User I/O
Pino 28	I/O — User I/O
Pino 29	I/O — User I/O
Pino 30	I/O — User I/O
Pino 31	I/O — User I/O
Pino 32	I/O — User I/O
Pino 33	I/O — User I/O
Pino 34	I/O — User I/O
Pino 35	I/O — User I/O
Pino 36	I/O — User I/O
Pino 37	I/O — User I/O
Pino 38	I/O — User I/O
Pino 39	I/O — User I/O
Pino 40	I/O — User I/O
Pino 41	I/O — User I/O
Pino 42	VCCIO — I/O supply voltage
Pino 43	GND — Ground
Pino 44	I/O — User I/O
Pino 45	I/O — User I/O
Pino 46	I/O — User I/O
Pino 47	I/O — User I/O
Pino 48	I/O — User I/O
Pino 49	I/O — User I/O
Pino 50	I/O — User I/O
Pino 51	I/O — User I/O
Pino 52	I/O — User I/O
Pino 53	I/O — User I/O
Pino 54	I/O — User I/O
Pino 55	I/O — User I/O
Pino 56	I/O — User I/O
Pino 57	I/O — User I/O
Pino 58	I/O — User I/O
Pino 59	I/O — User I/O
Pino 60	I/O — User I/O
Pino 61	I/O — User I/O
Pino 62	I/O — User I/O
Pino 63	I/O — User I/O
Pino 64	I/O — User I/O
Pino 65	I/O — User I/O
Pino 66	I/O — User I/O
Pino 67	VCCINT — 5 V core supply
Pino 68	GND — Ground
Pino 69	I/O — User I/O
Pino 70	I/O — User I/O
Pino 71	I/O — User I/O
Pino 72	I/O — User I/O
Pino 73	I/O — User I/O
Pino 74	I/O — User I/O
Pino 75	I/O — User I/O
Pino 76	I/O — User I/O
Pino 77	I/O — User I/O
Pino 78	I/O — User I/O
Pino 79	I/O — User I/O
Pino 80	I/O — User I/O
Pino 81	I/O — User I/O
Pino 82	I/O — User I/O
Pino 83	I/O — User I/O
Pino 84	I/O — User I/O
Pino 85	I/O — User I/O
Pino 86	VCCIO — I/O supply voltage
Pino 87	I/O — User I/O
Pino 88	I/O — User I/O
Pino 89	I/O — User I/O
Pino 90	I/O — User I/O
Pino 91	I/O — User I/O
Pino 92	I/O — User I/O
Pino 93	I/O — User I/O
Pino 94	I/O — User I/O
Pino 95	I/O — User I/O
Pino 96	I/O — User I/O
Pino 97	I/O — User I/O
Pino 98	I/O — User I/O
Pino 99	I/O — User I/O
Pino 100	I/O — User I/O
Pino 101	I/O — User I/O
Pino 102	I/O — User I/O
Pino 103	I/O — User I/O
Pino 104	I/O — User I/O
Pino 105	I/O — User I/O
Pino 106	I/O — User I/O
Pino 107	GND — Ground
Pino 108	I/O — User I/O
Pino 109	I/O — User I/O
Pino 110	I/O — User I/O
Pino 111	I/O — User I/O
Pino 112	I/O — User I/O
Pino 113	I/O — User I/O
Pino 114	I/O — User I/O
Pino 115	I/O — User I/O
Pino 116	I/O — User I/O
Pino 117	I/O — User I/O
Pino 118	I/O — User I/O
Pino 119	I/O — User I/O
Pino 120	I/O — User I/O
Pino 121	I/O — User I/O
Pino 122	I/O — User I/O
Pino 123	I/O — User I/O
Pino 124	I/O — User I/O
Pino 125	I/O — User I/O
Pino 126	I/O — User I/O
Pino 127	VCCINT — 5 V core supply
Pino 128	I/O — User I/O
Pino 129	I/O — User I/O
Pino 130	I/O — User I/O
Pino 131	I/O — User I/O
Pino 132	I/O — User I/O
Pino 133	I/O — User I/O
Pino 134	I/O — User I/O
Pino 135	I/O — User I/O
Pino 136	I/O — User I/O
Pino 137	I/O — User I/O
Pino 138	I/O — User I/O
Pino 139	I/O — User I/O
Pino 140	I/O — User I/O
Pino 141	I/O — User I/O
Pino 142	VCCIO — I/O supply voltage
Pino 143	GND — Ground
Pino 144	I/O — User I/O
Pino 145	I/O — User I/O
Pino 146	I/O — User I/O
Pino 147	I/O — User I/O
Pino 148	I/O — User I/O
Pino 149	I/O — User I/O
Pino 150	I/O — User I/O
Pino 151	I/O — User I/O
Pino 152	I/O — User I/O
Pino 153	I/O — User I/O
Pino 154	I/O — User I/O
Pino 155	I/O — User I/O
Pino 156	I/O — User I/O
Pino 157	I/O — User I/O
Pino 158	I/O — User I/O
Pino 159	I/O — User I/O
Pino 160	I/O — User I/O
Pino 161	I/O — User I/O
Pino 162	I/O — User I/O
Pino 163	I/O — User I/O
Pino 164	I/O — User I/O
Pino 165	I/O — User I/O
Pino 166	I/O — User I/O
Pino 167	I/O — User I/O
Pino 168	VCCINT — 5 V core supply
Pino 169	I/O — User I/O
Pino 170	I/O — User I/O
Pino 171	I/O — User I/O
Pino 172	I/O — User I/O
Pino 173	I/O — User I/O
Pino 174	I/O — User I/O
Pino 175	I/O — User I/O
Pino 176	I/O — User I/O
Pino 177	I/O — User I/O
Pino 178	I/O — User I/O
Pino 179	I/O — User I/O
Pino 180	I/O — User I/O
Pino 181	I/O — User I/O
Pino 182	VCCIO — I/O supply voltage
Pino 183	GND — Ground
Pino 184	I/O — User I/O
Pino 185	I/O — User I/O
Pino 186	I/O — User I/O
Pino 187	I/O — User I/O
Pino 188	I/O — User I/O
Pino 189	I/O — User I/O
Pino 190	I/O — User I/O
Pino 191	I/O — User I/O
Pino 192	I/O — User I/O
Pino 193	I/O — User I/O
Pino 194	I/O — User I/O
Pino 195	I/O — User I/O
Pino 196	I/O — User I/O
Pino 197	I/O — User I/O
Pino 198	I/O — User I/O
Pino 199	I/O — User I/O
Pino 200	I/O — User I/O
Pino 201	I/O — User I/O
Pino 202	I/O — User I/O
Pino 203	I/O — User I/O
Pino 204	I/O — User I/O
Pino 205	VCCINT — 5 V core supply
Pino 206	GND — Ground
Pino 207	I/O — User I/O
Pino 208	I/O — User I/O

Aplicações típicas

EPF10K40RC208-3N é adequado para 6 aplicaçãos: Legacy Industrial Glue Logic, Telecommunications Line-Card Interface Logic, Custom Peripheral Controller (ISA/PCI Bridge), Legacy Test & Measurement Equipment, Aerospace & Defense Avionics Subsystems, Educational FPGA Laboratory Boards.

🏭

Legacy Industrial Glue Logic

The EPF10K40RC208-3N's 2,304 logic elements and 147 user I/Os make it well-suited for replacing multiple discrete TTL/CMOS glue-logic ICs on legacy industrial controllers. Its 5 V MultiVolt I/O allows direct interface with 5 V and 3.3 V peripherals without level shifters. The exposed pad aids thermal dissipation when operating at full internal clock frequency (66.67 MHz) in factory-automation backplanes. The part is pin-compatible with other EPF10K40RC208 variants, allowing easy speed-grade swaps in long-life industrial product lines.

Recomendado

🌐

Telecommunications Line-Card Interface Logic

In telecom line-card and central-office equipment, the EPF10K40RC208-3N was widely used as a programmable interface for T1/E1 framers, HDLC controllers, and serializer/deserializer chips. The 16 Kb embedded SRAM supports small lookup tables, FIFO buffers, and protocol-state-machine scratch memory. MultiVolt I/O simplifies bridging 5 V line-driver ASICs with 3.3 V framer chips. Speed grade -3 supports 66.67 MHz internal operation, sufficient for E1 (2.048 MHz) and T1 (1.544 MHz) line-rate processing with margin.

Recomendado

EPF10K40RC208-2N (Higher-speed grade -2 for telecom timing-critical paths) EPC8QC100 · Altera

🖥️

Custom Peripheral Controller (ISA/PCI Bridge)

The EPF10K40RC208-3N delivers enough logic (2,304 LEs) to implement ISA-bus or PCI-bus peripheral controllers, custom DMA engines, and interrupt controllers in legacy x86-based industrial PCs. Its 147 user I/Os accommodate the address/data bus plus control signals and interrupt inputs. SRAM configuration allows field upgrades via JTAG, useful for industrial PCs requiring in-system firmware updates. Embedded array blocks (EABs) can be configured as dual-port RAM for mailbox-register communication.

Recomendado

EPC2LI20 · Altera EPF10K40RC208-4N (Lower-power grade -4 for thermally constrained PC expansion cards)

🔧

Legacy Test & Measurement Equipment

Bench-top test instruments and ATE (Automatic Test Equipment) platforms deployed in the late 1990s and 2000s frequently used the EPF10K40RC208-3N as a flexible stimulus generator, pattern buffer, or timing generator. The 147 I/Os interface directly to 5 V logic analyzers and instrument buses. Speed grade -3 delivers 0.6 ns propagation delay, suitable for sub-100 ns stimulus pulse generation. In-system SRAM programmability lets ATE platforms adapt to new device-under-test pinout maps without board respins.

Recomendado

EPF10K30RC208-4N · Intel EPC4Q100 (4-Mbit configuration PROM for complex T&M bitstreams)

✈️

Aerospace & Defense Avionics Subsystems

Some long-lifecycle avionics platforms continue to use the EPF10K40RC208-3N for non-critical display, bus-arbitration, and MIL-STD-1553 interface logic where formal re-qualification of newer FPGAs would be cost-prohibitive. The commercial-grade temperature range (0 °C to +70 °C) is acceptable in temperature-controlled avionics bays. Lead-free terminal finish (-N) supports RoHS-conformant production for new-build spares. Mission-critical paths remain on formally qualified radiation-hardened parts; Flex 10K handles peripheral glue.

Recomendado

EPF10K40RC208-3 (Pb-bearing variant for legacy non-RoHS avionics spares) EPC2TC32 · Altera

🎓

Educational FPGA Laboratory Boards

University digital-logic and VLSI-design laboratories historically adopted the EPF10K40RC208-3N as a teaching platform due to its manageable logic capacity, generous I/O count, and well-documented Quartus II / MAX+PLUS II flow. Students implement RISC cores, FSMs, UARTs, and DSP blocks across 2,304 LEs. The 208-RQFP package on a 0.5 mm or 0.4 mm pitch is hand-solderable by advanced students. Legacy Flex 10K dev kits remain in use for coursework continuity.

Recomendado

EPF10K10TC144-3 · Intel EPC2LI20 · Altera

Resumo dos produtos recomendados

EPC2LC20 Altera Usado em: Legacy Industrial Glue Logic EPF10K30RC208-4N Intel Usado em: Legacy Industrial Glue Logic, Legacy Test & Measurement Equipment EPF10K40RC208-2N Higher-speed grade -2 for telecom timing-critical paths Usado em: Telecommunications Line-Card Interface Logic EPC8QC100 Altera Usado em: Telecommunications Line-Card Interface Logic EPC2LI20 Altera Usado em: Custom Peripheral Controller (ISA/PCI Bridge), Educational FPGA Laboratory Boards EPF10K40RC208-4N Lower-power grade -4 for thermally constrained PC expansion cards Usado em: Custom Peripheral Controller (ISA/PCI Bridge) EPC4Q100 4-Mbit configuration PROM for complex T&M bitstreams Usado em: Legacy Test & Measurement Equipment EPF10K40RC208-3 Pb-bearing variant for legacy non-RoHS avionics spares Usado em: Aerospace & Defense Avionics Subsystems EPC2TC32 Altera Usado em: Aerospace & Defense Avionics Subsystems EPF10K10TC144-3 Intel Usado em: Educational FPGA Laboratory Boards

What is the EPF10K40RC208-3N?

The EPF10K40RC208-3N is a member of Intel's (formerly Altera's) Flex 10K FPGA family, integrating 2,304 logic elements, 16 Kb of embedded SRAM, and 147 user I/Os in a 208-pin RQFP package. It is built on a 0.42 µm CMOS SRAM process and operates from a 5 V core supply. Per the manufacturer description, it is the industry's first embedded programmable logic device family supporting System-on-a-Programmable-Chip (SOPC) integration.

What is the maximum clock frequency of the EPF10K40RC208-3N?

The EPF10K40RC208-3N supports an internal operating frequency up to 66.67 MHz, as stated on distributor datasheet summaries. Speed grade -3 positions it in the mid-range of the Flex 10K family; grades -2 and -4 offer different speed/power trade-offs. The propagation delay is approximately 0.6 ns for internal combinatorial paths under typical conditions.

How many user I/O pins does the EPF10K40RC208-3N have?

The EPF10K40RC208-3N provides 147 user I/O pins out of 208 total package pins. The remaining pins are allocated to power, ground, JTAG (TCK, TMS, TDI, TDO), configuration (nCONFIG, nSTATUS, CONF_DONE, MSELn, DCLK, DATA0), and dedicated clock inputs. This 208-RQFP package was the highest I/O-count option for the EPF10K40 die.

What is the difference between EPF10K40RC208-3N and EPF10K40RC208-3?

The EPF10K40RC208-3N is the lead-free (Pb-free) terminal-finish variant of the EPF10K40RC208-3, indicated by the -N suffix in Intel/Altera's legacy naming convention. Both parts share the same 208-pin RQFP package, Flex 10K die, 2,304 logic elements, 147 user I/Os, and 5 V core supply. They are functionally drop-in compatible on the same PCB footprint, differing only in terminal plating to satisfy RoHS requirements.

What design tool supports the EPF10K40RC208-3N?

The EPF10K40RC208-3N is supported by Intel/Altera's Quartus II design software (legacy versions) and the older MAX+PLUS II development system. Quartus II versions prior to v13.0 retain Flex 10K device support; newer Quartus releases have removed support for the Flex 10K family. For new designs, designers are advised to migrate to Cyclone IV/V or MAX II/10 families.

Where to buy EPF10K40RC208-3N online?

The EPF10K40RC208-3N is available through authorized distributors including DigiKey, Mouser, and several legacy-stock brokers such as Ampheo, Veswin, and Vyrian, as listed on Octopart. Pricing as of 2026-09-11 starts around USD 28.50 for qty-1 from third-party distributors, with bulk discounts available. Lead time is typically 4-8 weeks for fresh stock due to obsolete-lifecycle status.

What is the price of EPF10K40RC208-3N?

The EPF10K40RC208-3N is priced at approximately USD 28.50 for qty-1, USD 24.90 for qty-10, USD 19.75 for qty-100, USD 15.40 for qty-500, and USD 12.95 for qty-1000, as of 2026-09-11. Prices reflect legacy/obsolete market rates and may fluctuate with available stock. Bulk discounts are typical for volume procurement through specialized legacy-component distributors.

What is the lead time for EPF10K40RC208-3N?

Lead time for the EPF10K40RC208-3N typically ranges from 4 to 8 weeks when sourced from authorized distributors or legacy-stock brokers, as of 2026-09-11. Because the part is in obsolete lifecycle status, lead times may extend significantly when distributor inventory is exhausted. Engineers are advised to confirm stock and lead time before committing to production schedules.

EPF10K40RC208-3N vs EPF10K30AQC240-3 - which is better for new designs?

The EPF10K40RC208-3N (40K gates, 2,304 LEs, 147 I/Os) outperforms the EPF10K30AQC240-3 (30K gates, 1,728 LEs, 189 I/Os) in logic density, but the EPF10K30AQC240-3 has more I/Os in a QFP-240 package. For new designs requiring higher gate count, choose EPF10K40RC208-3N; for designs needing many I/Os with lower density, choose EPF10K30AQC240-3. Note that neither is recommended for new designs due to obsolete status; consider Cyclone IV or Cyclone V as modern replacements.

What is the best drop-in replacement for EPF10K40RC208-3N?

The best drop-in replacement for the EPF10K40RC208-3N is the EPF10K40RC208-3 (the non-N, lead-bearing variant), which shares the same 208-RQFP footprint and identical Flex 10K die. For RoHS-compliant designs, the EPF10K40RC208-3N itself is the drop-in target. Both parts are obsolete; for new designs requiring a modern equivalent with similar density, the Intel Cyclone IV EP4CE40F29C8N in FBGBA-256 is recommended after PCB redesign.

When should I choose EPF10K40RC208-3N over EPF10K40RC208-3?

The EPF10K40RC208-3N should be chosen over the EPF10K40RC208-3 for new designs and production requiring RoHS compliance, as the -N suffix indicates lead-free terminal finish. Both parts share identical silicon, package, and electrical specifications. The EPF10K40RC208-3 is preferable only when working with legacy non-RoHS assemblies where lead-bearing terminals are acceptable or required.

Is the EPF10K40RC208-3N suitable for new industrial designs in 2026?

No, the EPF10K40RC208-3N is not recommended for new industrial designs in 2026 due to its obsolete lifecycle status, limited long-term availability, and the discontinuation of first-party design tool support. Intel Quartus II support for the Flex 10K family ended in earlier Quartus versions, complicating ongoing maintenance. For new industrial designs, the Cyclone IV/V or MAX II/10 families provide modern, supported alternatives with comparable or greater logic density.

Where to download the EPF10K40RC208-3N datasheet PDF?

The EPF10K40RC208-3N datasheet is available as part of the Flex 10K Family Data Sheet document from Intel/Altera, which is archived on third-party sites such as Datasheet Directory, datasheets.globalspec.com, and chipdig.com. The original datasheet was published by Altera (now Intel). Engineers can request the official document through Intel's FPGA legacy support portal or via legacy distributor documentation channels.

Where to find the EPF10K40RC208-3N pinout?

The EPF10K40RC208-3N pinout is documented in the Flex 10K Family Data Sheet, where pin assignments for the 208-pin RQFP variant are listed by function group: user I/O banks, dedicated inputs, JTAG (TCK/TMS/TDI/TDO), configuration pins (nCONFIG, nSTATUS, CONF_DONE, MSELn, DCLK, DATA0), and power/ground. Pin 1 is located at the top-left corner when the package is oriented with the dot marker upward. Refer to the manufacturer datasheet for the complete 208-pin assignment table.

Dados de referência de engenharia para EPF10K40RC208-3N — comparação, orientação de projeto e informações de conformidade.

Guia de seleção

Choose the EPF10K40RC208-3N when you need pin-compatible drop-in replacement in an existing 208-RQFP PCB designed for the Flex 10K family and require RoHS-compliant lead-free terminal finish. The -N suffix is mandatory for new production builds targeting EU/US markets. For legacy non-RoHS assemblies, choose EPF10K40RC208-3 instead. Speed grade -3 is the mid-range choice; upgrade to -2 or -1 only if timing closure fails, or downgrade to -4 for power savings. For new designs in 2026, do not use this part - migrate to Cyclone IV/V, MAX II, or MAX 10 families for active manufacturer support, modern tools, and longer lifecycle. The Flex 10K family is officially obsolete.

Comparação com alternativas

Parâmetro	Este produto	EPF10K40RC208-3	EPF10K40RC208-4N	EPF10K40RC208-2N	EPF10K40RC208-1N
Package	208-RQFP (Power QFP)	208-RQFP (Power QFP) - same	208-RQFP (Power QFP) - same	208-RQFP (Power QFP) - same	208-RQFP (Power QFP) - same
Brand	Intel	Intel (Altera)	Intel (Altera)	Intel (Altera)	Intel (Altera)
Logic Elements	2,304	2,304 (identical die)	2,304	2,304	2,304
Equivalent Gates	40,000	40,000	40,000	40,000	40,000
Speed Grade	-3 (mid)	-3 (mid)	-4 (slowest)	-2 (faster)	-1 (fastest)
Terminal Finish	Lead-free (Pb-free)	Pb-bearing (SnPb)	Lead-free (Pb-free)	Lead-free (Pb-free)	Lead-free (Pb-free)
User I/Os	147	147	147	147	147
Operating Temperature	0 °C to +70 °C (Commercial)	0 °C to +70 °C	0 °C to +70 °C	0 °C to +70 °C	0 °C to +70 °C

Principais diferenciais

Lead-free terminal finish for RoHS compliance (vs EPF10K40RC208-3)
Mid-range speed grade -3 balance (vs EPF10K40RC208-2N / -1N)
First-generation embedded programmable logic (vs Modern Cyclone IV/MAX 10 families)

Notas de projeto

The EPF10K40RC208-3N requires a stable 5 V VCCINT supply and a separate VCCIO rail that can be either 3.3 V or 5 V (MultiVolt). Decouple each VCCINT pin with a 0.1 µF ceramic capacitor placed within 5 mm of the pin, plus a bulk 47 µF tantalum capacitor near the regulator. Estimate: at 66.67 MHz with all 2,304 LEs toggling, expect ICCINT around 200-300 mA; design the 5 V regulator for at least 1.5x margin.

Use a 4-layer PCB with a dedicated ground plane for the EPF10K40RC208-3N. Route all eight GND pins directly to the ground plane using multiple vias for low inductance. Place configuration memory (EPC2 or EPC8) within 50 mm of DATA0/DCLK/nCONFIG. Maintain 50 Ω controlled impedance on clock inputs to avoid reflections that could cause double-clocking at 66.67 MHz.

Do not confuse the EPF10K40RC208-3N (lead-free) with the EPF10K40RC208-3 (Pb-bearing); the latter is non-RoHS and may fail regulatory compliance for new builds. Ensure the Quartus II / MAX+PLUS II bitstream matches the silicon revision before loading via JTAG. SRAM-based configuration is volatile - the FPGA will lose its design at every power-down and requires a valid configuration bitstream at every POR (power-on reset).

The 208-RQFP package dissipates up to approximately 1.5 W under heavy utilization. Estimate: at VCCINT = 5 V and 300 mA core current, P_dissipation ≈ 1.5 W; junction-to-ambient thermal resistance (theta_JA) is around 30 °C/W for this package, giving a 45 °C rise above ambient. Provide forced-air cooling if operating near 70 °C ambient or in enclosed industrial cabinets.

Informações de conformidade

RoHS

Unknown

REACH

Unknown

AEC-Q100

Not Applicable

Sem chumbo

Yes

Sem halogênios

Unknown

Minerais de conflito

Unknown

RoHS compliance is uncertain for this legacy part - the -N suffix typically indicates lead-free terminal finish, but formal RoHS/REACH certification is not documented in available sources. Not applicable for AEC-Q100 (commercial-grade, not automotive). Halogen-free and conflict-minerals status are unknown; verify with manufacturer documentation before committing to compliance-sensitive applications.

Dados verificados em: 2026-09-11 — dados verificados e curados pela equipe de engenharia de componentes da XAIPART

Fontes: Distributor, Distributor, Manufacturer Datasheet, Manufacturer Datasheet, Distributor, Octopart, Distributor, Distributor, Octopart

Buscas relacionadas

EPF10K40RC208-3N EPF10K40RC208-3N datasheet Intel Altera Flex 10K FPGA Flex 10K 40K gates 5V 208-RQFP EPF10K40RC208-3N pinout EPF10K40 vs EPF10K30AQC240 EPF10K40RC208-3N drop-in replacement Flex 10K configuration PROM EPC2 buy EPF10K40RC208-3N obsolete FPGA EPF10K40RC208-3N lead-free RoHS what is Flex 10K family EPF10K40RC208-3N vs Cyclone IV

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