EPF8636AQC208-4 - FLEX 8000 FPGA, 6K Gates, 504 Cells | Altera
N.º da peça: EPF8636AQC208-4 ✗ Fim de vida| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $36.8 | $36,80 |
| 500 | $36.43 | $18.215,00 |
| 1.000 | $36.06 | $36.060,00 |
| 1.500 | $35.7 | $53.550,00 |
| 2.000 | $35.33 | $70.660,00 |
EPF8636AQC208-4 Visão geral
A field-programmable gate array (FPGA) is a semiconductor device built around an array of configurable logic blocks (CLBs), programmable interconnect, and configurable I/O cells, all of which can be redefined after manufacture. Within the broader hierarchy, this part is a low-density legacy FPGA, sitting between simple PLDs/CPLDs and high-performance modern FPGAs; it is widely used for glue logic, bus bridging, and state-machine integration in industrial and telecom systems that were originally designed in the mid-1990s to early 2000s.
Key differentiating features of the EPF8636AQC208-4 include 4,992 typical usable gates, a fine-grained Look-Up Table (LUT) plus register architecture inherited from the FLEX 8000 family, JTAG-based boundary-scan test support (IEEE 1149.1), multi-volt I/O support, and a speed grade of -4 (commercial 0 °C to 70 °C). The 208-pin PQFP (28 × 28 mm body) provides ample user I/O (136 pins) for parallel buses, while the embedded array blocks (EABs) allow implementation of on-chip RAM, ROM, and FIFO functions without external memory.
Technically, the device uses a 5 V CMOS core with 5 V tolerant I/Os and supports both synchronous and asynchronous memory interfaces. Its 504 LEs are organized into rows of Logic Array Blocks (LABs), each containing 8 LEs with carry-chain and cascade-chain support, enabling efficient arithmetic and wide decoding functions. Combined with the 0.42 µm process node and tri-state buffer per LAB, the device balances speed and density for legacy designs.
Typical applications include industrial glue-logic replacement, telecom line-card glue logic, parallel bus interfacing and bridging, factory automation controllers, legacy printer and imaging pipelines, and embedded state-machine controllers. Designers favor the FLEX 8000 family for drop-in upgrades from discrete TTL/CMOS logic because of the 136 I/O count and 5 V interface compatibility.
When designing with this part, note that the EPF8636AQC208-4 has been marked obsolete by Intel (which acquired Altera in 2015). Engineers should plan multi-source qualification and verify long-term supply; Rochester Electronics and other legacy distributors continue to support the part, but design teams are advised to assess modern replacements such as Altera MAX II/V CPLDs or low-density Cyclone FPGAs for new designs.
Alternativas drop-in para EPF8636AQC208-4 — 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 EPF8636AQC208-4 (mesmo formato e footprint) — diferindo em Configuration Method, Package, Operating Temperature, Process Technology, RoHS Status.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
EPF8636AQC208-3
✅ Drop-In✓ Em estoque
$28 / unidade
Ver ficha técnica →EPF8636AQC208-2
✅ Drop-In✓ Em estoque
$18.95 / unidade
Ver ficha técnica →EPF8636AQC208-4N
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$10.4 / unidade
Ver ficha técnica →EPF8636AQC208-4 Classificações máximas e características elétricas
| Family | FLEX 8000 |
| Logic Elements | 504 |
| Typical Usable Gates | 6,000 |
| Maximum Usable Gates | 12,000 |
| User I/O Pins | 136 |
| Maximum Operating Frequency | 125 MHz |
| Tensão de alimentação | 4.75 V to 5.25 V (5 V nominal) |
| Temperatura de operação | 0 °C to +70 °C (commercial) |
| Speed Grade | -4 |
| Package Type | 208-pin PQFP / BFQFP (28 x 28 mm) |
| Process Technology | 0.42 µm CMOS, SRAM-based |
| Configuration Method | Serial / Passive Parallel Asynchronous with ICR (in-circuit reconfigurability) |
| Embedded Memory | Embedded Array Blocks (EABs) for RAM/ROM/FIFO |
| Boundary Scan | JTAG IEEE 1149.1 |
| Logic Family | CMOS |
| Tipo de montagem | Surface Mount |
Guia de Configuração de Pinos do EPF8636AQC208-4 208-pin pqfp / bfqfp (28 x 28 mm)
Configuração de pinos para EPF8636AQC208-4 (pacote 208-pin pqfp / bfqfp (28 x 28 mm)). Este CI digital inclui GPIO, interfaces de comunicação (UART, SPI, I2C) e pinos de alimentação. Consulte o datasheet do fabricante para funções alternativas dos pinos e opções de configuração. Essencial para projeto de sistemas embarcados e layout de PCB.
Nenhum dado detalhado de pinagem disponível para EPF8636AQC208-4.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
EPF8636AQC208-4 é adequado para 6 aplicaçãos: Industrial Glue Logic Replacement, Telecom Line-Card Glue Logic, Parallel Bus Interface Bridging, Factory Automation Controllers, Legacy Printer and Imaging Pipelines, Embedded State-Machine Controllers.
Industrial Glue Logic Replacement
The EPF8636AQC208-4 is well suited as a single-chip replacement for multiple discrete 74-series TTL/CMOS glue-logic ICs in industrial control boards. With 504 logic elements and 136 user I/Os in a 208-pin PQFP, it can consolidate address decoding, bus arbitration, and interrupt steering logic into one 5 V device, simplifying board layout and reducing component count. The 5 V-tolerant I/O matches legacy 5 V industrial backplanes directly. Pair with EPF8636AQC208-3 for tighter timing margins on high-speed decode paths. Compared to discrete logic, the FLEX 8000 device offers in-circuit reconfigurability for late-stage design changes without PCB rework, a critical advantage during prototype iterations.
Recomendado
Telecom Line-Card Glue Logic
In telecom line cards and central-office equipment, the EPF8636AQC208-4 handles HDLC framing, time-slot assignment, and backplane interface glue logic at 5 V. The 125 MHz internal performance is sufficient for E1/T1 and lower-rate PCM highway interfaces, and the 136 I/Os accommodate parallel PCM buses plus control/status registers. The FLEX 8000 JTAG port supports in-field bitstream updates during service windows, and the 5 V I/O directly interfaces to legacy line-card transceivers. For higher-density aggregation, consider EPF10K10 or EPF10K20 from the FLEX 10K family, but the EPF8636A remains the workhorse for sub-6K-gate line-card designs.
Recomendado
Parallel Bus Interface Bridging
The 136 user I/Os of the EPF8636AQC208-4 are ideal for bridging between parallel buses of different widths and protocols, such as converting an 8-bit ISA bus to a 16-bit local bus or arbitrating between a PCI-style bus and an embedded local bus. The embedded array blocks (EABs) provide small on-chip FIFOs that smooth bus handoffs without external memory. The 208-pin PQFP gives full address and data bus access on a single device, while the 5 V tolerance preserves compatibility with legacy 5 V bus peripherals. Use the JTAG port to update bridging logic when peripheral upgrades change bus protocols.
Recomendado
Factory Automation Controllers
The EPF8636AQC208-4 serves as a state-machine and I/O expansion engine in factory automation controllers, where it consolidates sensor-input conditioning, actuator-output sequencing, and safety interlock logic into a single reprogrammable device. With 504 logic elements it can handle multi-axis stepper/servo timing, encoder decoding, and PLC I/O scanning at sub-microsecond resolution. The 5 V I/O directly interfaces to industrial 24 V optically-isolated input modules via external level shifters, and the commercial 0 °C to 70 °C range suits most factory-floor enclosures. Designers favor the FLEX 8000 family for its ability to reconfigure I/O assignments late in the design cycle without respinning the controller PCB.
Recomendado
Legacy Printer and Imaging Pipelines
The EPF8636AQC208-4 is found in legacy laser printer, scanner, and digital copier image pipelines where it performs DMA engine control, image buffer steering, and print-head drive timing. The 136 I/Os handle parallel video data buses, encoder feedback, and stepper motor control signals simultaneously, while the 504 LEs are sufficient for line-buffer management and image processing pre-stages at modest resolutions. The 5 V tolerant interface matches legacy print engine driver ICs. For new designs, evaluate MAX V CPLDs or Cyclone IV FPGAs, but for repair and refurbishment of legacy imaging equipment the EPF8636AQC208-4 remains a drop-in replacement.
Recomendado
Embedded State-Machine Controllers
The EPF8636AQC208-4 excels as an embedded state-machine controller for instruments, test equipment, and consumer electronics that need deterministic, multi-state sequencing beyond what a microcontroller can provide alone. Designers implement complex Mealy/Moore machines, watchdog logic, and power-sequencing controllers directly in the FLEX 8000 fabric, offloading the host CPU. The JTAG port enables field firmware updates without removing the device from the board, while the 5 V tolerance preserves compatibility with legacy analog front ends. For multi-MHz state transitions, the -2 or -3 speed grade provides additional timing margin over the -4 grade.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para EPF8636AQC208-4 — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | EPF8636AQC208-3 | EPF8636AQC208-2 | EPF8636AQC208-4N |
|---|---|---|---|---|
| Brand | Altera (Intel) | Altera (Intel) | Altera (Intel) | Altera (Intel) |
| Package | PQFP-208 (28 x 28 mm) | PQFP-208 - same | PQFP-208 - same | PQFP-208 - same |
| Logic Elements | 504 | 504 | 504 | 504 |
| Typical Usable Gates | 6,000 | 6,000 | 6,000 | 6,000 |
| User I/O Pins | 136 | 136 | 136 | 136 |
| Speed Grade | -4 | -3 (faster) | -2 (fastest) | -4 (same, lead-free) |
| Supply Voltage | 4.75 V to 5.25 V | 4.75 V to 5.25 V | 4.75 V to 5.25 V | 4.75 V to 5.25 V |
| Operating Temperature | 0 °C to +70 °C | 0 °C to +70 °C | 0 °C to +70 °C | 0 °C to +70 °C |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete |
Principais diferenciais
- Only -4 speed grade in the EPF8636AQC208 family with commercial 0-70 °C rating (vs EPF8636AQC208-3)
- Standard tin-lead (SnPb) finish versus lead-free (vs EPF8636AQC208-4N)
- 208-pin PQFP with 136 user I/Os versus 160-pin PQFP (vs EPF8452AQC160-4)
Notas de projeto
The PQFP-208 package on EPF8636AQC208-4 has an industry-typical theta-JA of approximately 35 °C/W on a JEDEC 4-layer test board without airflow. Estimated: at 5 V supply and 100 MHz internal toggle rate, total power dissipation is roughly 0.5 W to 1.5 W depending on toggle density, producing a junction-temperature rise of 18 °C to 53 °C above ambient. Keep the junction below 125 °C by limiting ambient to 70 °C max and providing a copper pour under the package. Avoid placing heat-generating components within 10 mm of the device.
Route all 5 V supply pins to a continuous power plane, with at least one 0.1 µF ceramic decoupling capacitor per VCC pin placed within 3 mm of each pin. Add bulk 10 µF to 47 µF tantalum or aluminum-polymer capacitors at the device corners. Place the JTAG connector within 50 mm of the device and keep TCK, TMS, TDI, TDO traces short and length-matched to avoid signal-integrity issues during in-system programming. Provide a clear silkscreen pin-1 indicator for the PQFP-208 body since orientation mistakes are common during rework.
Do not mix the EPF8636AQC208-4 with EPF8452AQC160-4 or EPF81188AQC208-3 on the same PCB footprint - although all are FLEX 8000 family, the EPF8452 uses a 160-pin PQFP (different footprint) and EPF81188 has 188 K-gates (different bitstream). Verify the bitstream matches the exact silicon by checking the device IDCODE via JTAG before programming. Watch for VCC ramp-time requirements (must be monotonic per FLEX 8000 datasheet); a slow or noisy 5 V ramp can corrupt configuration. Always read the configuration checksum after programming to detect silent failures.
The EPF8636AQC208-4 I/O pins can drive moderate capacitive loads but performance degrades above 50 pF. For high-fanout or long-trace outputs, use a series damping resistor of 22 Ω to 33 Ω at the driver to control overshoot and ringing on 5 V lines. For clock inputs, keep traces shorter than 25 mm and use a ground guard trace on both sides. The 5 V I/O standard provides good noise margin but is sensitive to ground bounce; maintain a low-inductance ground return by stitching vias along all high-speed signal paths.
Informações de conformidade
EPF8636AQC208-4 ships with SnPb (tin-lead) finish suitable for legacy industrial assembly; the EPF8636AQC208-4N suffix indicates lead-free RoHS-compliant finish. RoHS/REACH compliance data not present in verified web sources, set to unknown. AEC-Q100 not applicable - this is a commercial-grade FPGA.
