EPF8636AQC208-4 - FLEX 8000 FPGA, 6K Gates, 504 Cells | Altera
MPN: EPF8636AQC208-4 ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 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 |
Drop-in alternatives for EPF8636AQC208-4 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
EPF8636AQC208-3
✅ Drop-In✓ In Stock
$28 / Unit
View Datasheet →EPF8636AQC208-2
✅ Drop-In✓ In Stock
$18.95 / Unit
View Datasheet →EPF8636AQC208-4N
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$10.4 / Unit
View Datasheet →EPF8636AQC208-4 Maximum Ratings & Electrical Characteristics
| 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 |
| Supply Voltage | 4.75 V to 5.25 V (5 V nominal) |
| Operating Temperature | 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 |
| Mounting Type | Surface Mount |
EPF8636AQC208-4 208-pin pqfp / bfqfp (28 x 28 mm) Pin Configuration Guide
Complete pinout information for EPF8636AQC208-4 (208-pin pqfp / bfqfp (28 x 28 mm) package) with 136 pins. 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.
No detailed pinout data available for EPF8636AQC208-4.
Refer to the datasheet for full pin configuration.
Estimated pin count: 136 pins (digital package)
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
EPF8636AQC208-4 is suitable for 6 applications: 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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
Recommended Products Summary
Engineering reference data for EPF8636AQC208-4 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | 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 |
| Unit Price (1 pc) | $36.80 | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
Key Differentiators
- 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)
Design Notes
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.
Compliance Information
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.
