EPF8636AQC208-4 - FLEX 8000 FPGA, 6K Gates, 504 Cells | Altera
Référence : EPF8636AQC208-4 ✗ Fin de vie| Qté | Prix unitaire | 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 Présentation
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.
Alternatives de remplacement direct pour EPF8636AQC208-4 — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec EPF8636AQC208-4 (même facteur de forme et même empreinte) — différant par Configuration Method, Package, Operating Temperature, Process Technology, RoHS Status.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
EPF8636AQC208-3
✅ Remplacement direct✓ En stock
$28 / unité
Voir la fiche technique →EPF8636AQC208-2
✅ Remplacement direct✓ En stock
$18.95 / unité
Voir la fiche technique →EPF8636AQC208-4N
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$10.4 / unité
Voir la fiche technique →EPF8636AQC208-4 Valeurs maximales et caractéristiques électriques
| 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 |
| Tension d'alimentation | 4.75 V to 5.25 V (5 V nominal) |
| Température de fonctionnement | 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 |
| Type de montage | Surface Mount |
Guide de configuration des broches du EPF8636AQC208-4 208-pin pqfp / bfqfp (28 x 28 mm)
Configuration des broches du EPF8636AQC208-4 (boîtier 208-pin pqfp / bfqfp (28 x 28 mm)). Ce circuit intégré numérique comprend des GPIO, des interfaces de communication (UART, SPI, I2C) et des broches d'alimentation. Consultez la fiche technique du fabricant pour les fonctions alternatives des broches et les options de configuration. Indispensable pour la conception de systèmes embarqués et la conception de circuits imprimés.
Aucune donnée de brochage détaillée disponible pour EPF8636AQC208-4.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
EPF8636AQC208-4 convient pour 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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour EPF8636AQC208-4 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | 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 |
Principaux différenciateurs
- 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)
Notes de conception
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.
Informations de conformité
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.
