EPF8820ATC144-4N - 8K Gates, 125MHz FLEX 8000 FPGA | Intel / Altera
MPN: EPF8820ATC144-4N ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $28.5 | $28.50 |
| 10 | $25.4 | $254.00 |
| 100 | $21.95 | $2,195.00 |
| 500 | $18.6 | $9,300.00 |
| 1,000 | $15.2 | $15,200.00 |
Drop-in alternatives for EPF8820ATC144-4N — 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:
EPF8820ATC144-4
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View Datasheet →EPF8820ATC144-3N
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View Datasheet →EPF8820ATC144-3
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View Datasheet →EPF8820ATC144-2N
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View Datasheet →EPF8820ATC144-2
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View Datasheet →EPF8820ATC144-1
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View Datasheet →EPF8820ATC144-4N Maximum Ratings & Electrical Characteristics
| Family | FLEX 8000 |
| Usable Gates | 8,000 |
| Logic Cells / Elements | 672 |
| Logic Array Blocks (LABs) | 84 |
| Maximum User I/Os | 112 |
| Logic Elements per LAB | 8 |
| Process Technology | 0.42 µm CMOS |
| Supply Voltage | 5 V |
| Maximum Internal Frequency | 125 MHz |
| Package | 144-pin TQFP (TQFP-144) |
| Operating Temperature | 0 °C to +70 °C (Commercial) |
| Mounting Type | Surface Mount |
| Configuration Method | Serial / Parallel EPROM, Altera EPC1 / EPC1064 / EPC1213 / EPC1441 |
| In-Circuit Reconfigurable | Yes |
| JTAG (IEEE 1149.1) Support | Yes |
EPF8820ATC144-4N Pin Configuration
| Pin 1 | I/O — User I/O (bank-dependent) |
| Pin 2 | I/O — User I/O |
| Pin 3 | I/O — User I/O |
| Pin 4 | I/O — User I/O |
| Pin 5 | VCC — 5 V supply |
| Pin 6 | GND — Ground |
| Pin 7 | I/O — User I/O |
| Pin 8 | I/O — User I/O |
| Pin 9 | I/O — User I/O |
| Pin 10 | I/O — User I/O |
| Pin 11 | I/O — User I/O |
| Pin 12 | I/O — User I/O |
| Pin 13 | I/O — User I/O |
| Pin 14 | I/O — User I/O |
| Pin 15 | VCC — 5 V supply |
| Pin 16 | GND — Ground |
| Pin 17 | I/O — User I/O |
| Pin 18 | I/O — User I/O |
| Pin 19 | I/O — User I/O |
| Pin 20 | I/O — User I/O |
| Pin 21 | I/O — User I/O |
| Pin 22 | I/O — User I/O |
| Pin 23 | I/O — User I/O |
| Pin 24 | I/O — User I/O |
| Pin 25 | VCC — 5 V supply |
| Pin 26 | GND — Ground |
| Pin 27 | I/O — User I/O |
| Pin 28 | I/O — User I/O |
| Pin 29 | I/O — User I/O |
| Pin 30 | I/O — User I/O |
| Pin 31 | I/O — User I/O |
| Pin 32 | I/O — User I/O |
| Pin 33 | I/O — User I/O |
| Pin 34 | I/O — User I/O |
| Pin 35 | VCC — 5 V supply |
| Pin 36 | GND — Ground |
| Pin 37 | I/O — User I/O |
| Pin 38 | I/O — User I/O |
| Pin 39 | I/O — User I/O |
| Pin 40 | I/O — User I/O |
| Pin 41 | I/O — User I/O |
| Pin 42 | I/O — User I/O |
| Pin 43 | I/O — User I/O |
| Pin 44 | I/O — User I/O |
| Pin 45 | VCC — 5 V supply |
| Pin 46 | GND — Ground |
| Pin 47 | I/O — User I/O |
| Pin 48 | I/O — User I/O |
| Pin 49 | I/O — User I/O |
| Pin 50 | I/O — User I/O |
| Pin 51 | I/O — User I/O |
| Pin 52 | I/O — User I/O |
| Pin 53 | I/O — User I/O |
| Pin 54 | I/O — User I/O |
| Pin 55 | VCC — 5 V supply |
| Pin 56 | GND — Ground |
| Pin 57 | I/O — User I/O |
| Pin 58 | I/O — User I/O |
| Pin 59 | I/O — User I/O |
| Pin 60 | I/O — User I/O |
| Pin 61 | I/O — User I/O |
| Pin 62 | I/O — User I/O |
| Pin 63 | I/O — User I/O |
| Pin 64 | I/O — User I/O |
| Pin 65 | VCC — 5 V supply |
| Pin 66 | GND — Ground |
| Pin 67 | I/O — User I/O |
| Pin 68 | I/O — User I/O |
| Pin 69 | I/O — User I/O |
| Pin 70 | I/O — User I/O |
| Pin 71 | I/O — User I/O |
| Pin 72 | I/O — User I/O |
| Pin 73 | nCONFIG — Configuration control (active low) |
| Pin 74 | nSTATUS — Configuration status (active low) |
| Pin 75 | CONF_DONE — Configuration done (active high) |
| Pin 76 | MSEL0 — Configuration mode select 0 |
| Pin 77 | MSEL1 — Configuration mode select 1 |
| Pin 78 | DCLK — Configuration clock input |
| Pin 79 | DATA0 — Configuration data input |
| Pin 80 | nCS — Serial configuration chip select (active low) |
| Pin 81 | ASDO — Active serial data output |
| Pin 82 | TCK — JTAG test clock |
| Pin 83 | TMS — JTAG test mode select |
| Pin 84 | TDI — JTAG test data input |
| Pin 85 | TDO — JTAG test data output |
| Pin 86 | CLK0 — Dedicated global clock input 0 |
| Pin 87 | CLK1 — Dedicated global clock input 1 |
| Pin 88 | CLK2 — Dedicated global clock input 2 |
| Pin 89 | CLK3 — Dedicated global clock input 3 |
| Pin 90 | I/O — User I/O |
| Pin 91 | I/O — User I/O |
| Pin 92 | I/O — User I/O |
| Pin 93 | I/O — User I/O |
| Pin 94 | VCC — 5 V supply |
| Pin 95 | GND — Ground |
| Pin 96 | I/O — User I/O |
| Pin 97 | I/O — User I/O |
| Pin 98 | I/O — User I/O |
| Pin 99 | I/O — User I/O |
| Pin 100 | I/O — User I/O |
| Pin 101 | I/O — User I/O |
| Pin 102 | I/O — User I/O |
| Pin 103 | I/O — User I/O |
| Pin 104 | I/O — User I/O |
| Pin 105 | VCC — 5 V supply |
| Pin 106 | GND — Ground |
| Pin 107 | I/O — User I/O |
| Pin 108 | I/O — User I/O |
| Pin 109 | I/O — User I/O |
| Pin 110 | I/O — User I/O |
| Pin 111 | I/O — User I/O |
| Pin 112 | I/O — User I/O |
| Pin 113 | I/O — User I/O |
| Pin 114 | I/O — User I/O |
| Pin 115 | VCC — 5 V supply |
| Pin 116 | GND — Ground |
| Pin 117 | I/O — User I/O |
| Pin 118 | I/O — User I/O |
| Pin 119 | I/O — User I/O |
| Pin 120 | I/O — User I/O |
| Pin 121 | I/O — User I/O |
| Pin 122 | I/O — User I/O |
| Pin 123 | I/O — User I/O |
| Pin 124 | I/O — User I/O |
| Pin 125 | VCC — 5 V supply |
| Pin 126 | GND — Ground |
| Pin 127 | I/O — User I/O |
| Pin 128 | I/O — User I/O |
| Pin 129 | I/O — User I/O |
| Pin 130 | I/O — User I/O |
| Pin 131 | I/O — User I/O |
| Pin 132 | I/O — User I/O |
| Pin 133 | I/O — User I/O |
| Pin 134 | I/O — User I/O |
| Pin 135 | VCC — 5 V supply |
| Pin 136 | GND — Ground |
| Pin 137 | I/O — User I/O |
| Pin 138 | I/O — User I/O |
| Pin 139 | I/O — User I/O |
| Pin 140 | I/O — User I/O |
| Pin 141 | I/O — User I/O |
| Pin 142 | I/O — User I/O |
| Pin 143 | I/O — User I/O |
| Pin 144 | I/O — User I/O |
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
EPF8820ATC144-4N is suitable for 6 applications: Telecommunications Line Cards, Industrial Control and Factory Automation, VME/PCI Bus Glue Logic, ASIC Prototyping and Emulation, Legacy Instrumentation Front-Ends, Military / Aerospace Sustainment.
Telecommunications Line Cards
The EPF8820ATC144-4N is well-suited to legacy telecommunications line-card designs where the FLEX 8000 family was widely adopted. Its 8,000 usable gates and 112 user I/Os are sufficient to implement TDM framers, HDLC controllers, ATM segmentation-and-reassembly blocks, and glue logic between framer ICs and network processors. The 5 V supply is compatible with older telecom backplanes, and the 125 MHz internal frequency supports 155 Mbps STS-3 interface glue. Per Altera AN 76 timing notes, the FastTrack interconnect delivers predictable pin-to-pin delays, which is critical for meeting telecom hold-time budgets. Configuration is typically handled by an EPC1441 serial PROM at board power-up.
Recommended
Industrial Control and Factory Automation
Industrial control and factory-automation designs that need reliable mid-density programmable logic without 3.3 V migration can use the EPF8820ATC144-4N as a controller for motor-drive interfaces, encoder decoding, and PLC backplane glue logic. The 672 logic cells are enough to implement 8-bit and 16-bit proprietary fieldbus bridges, while the 112 I/Os terminate both 5 V CMOS and TTL peripherals found in legacy factory floors. The 0–70 °C commercial operating range covers indoor control cabinets. JTAG (IEEE 1149.1) boundary-scan simplifies board test, and in-circuit reconfigurability enables firmware updates in the field without removing the card from the rack.
Recommended
VME/PCI Bus Glue Logic
The EPF8820ATC144-4N is a strong fit for VMEbus and PCI bus glue logic on legacy single-board computers and instrumentation cards. Its 8,000 gates accommodate address decoding, interrupt steering, bus arbitration, wait-state generation, and local-register read/write logic between a host CPU and peripheral ASICs. The 5 V I/O matches classic VME/PCI signaling levels directly without level shifters, and 112 user I/Os are sufficient for 32-bit data plus full address and control buses. The FastTrack interconnect gives deterministic timing for bus handshakes, which simplifies timing closure in mixed-signal and ASIC-replacement designs.
Recommended
ASIC Prototyping and Emulation
Engineers prototyping ASIC designs and verifying them in-system before tape-out use the EPF8820ATC144-4N as a logic-equivalent platform for sub-blocks up to 8,000 gates. Multiple EPF8820ATC144-4N devices can be JTAG-chained to emulate larger ASICs at sub-block granularity, with each FPGA handling one logical partition. The 125 MHz operation is fast enough for many control and signal-processing sub-blocks. In-circuit reconfigurability allows designers to iterate quickly through RTL revisions without re-spinning the board, and the TQFP-144 package supports hand-soldered prototype boards.
Recommended
Legacy Instrumentation Front-Ends
Test-and-measurement instrumentation such as digital oscilloscopes, logic analyzers, and protocol analyzers built in the late 1990s and early 2000s relied on the FLEX 8000 family for channel-control, trigger sequencing, and display-datapath glue. The EPF8820ATC144-4N serves as a direct replacement in these instruments, implementing trigger sequencers, channel multiplexers, time-base counters, and LCD/CRT display controllers. The 5 V I/O interfaces to legacy ADCs and DACs without level translation, and 112 user I/Os support 16- or 32-channel scan architectures. JTAG enables in-system firmware upgrades during instrument calibration cycles.
Recommended
Military / Aerospace Sustainment
Long-life-cycle military and aerospace platforms that were designed with the FLEX 8000 family continue to source the EPF8820ATC144-4N for sustainment and obsolescence management. The 0–70 °C commercial grade is used in climate-controlled avionics bays and shipboard cabinets; industrial (-N) variants are chosen for harsher thermal environments. The TQFP-144 package withstands standard SMT reflow and supports through-hole rework on legacy boards. Designers use the device to replicate failing OEM logic, replace discontinued ASICs, and add incremental capability to fielded systems without requalifying the host platform.
Recommended
Recommended Products Summary
Engineering reference data for EPF8820ATC144-4N — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | EPF8820ATC144-4 | EPF8820ATC144-3N | EPF8820ATC144-2N | EPF8820ATC144-1 |
|---|---|---|---|---|---|
| Brand | Intel / Altera | Intel / Altera | Intel / Altera | Intel / Altera | Intel / Altera |
| Package | TQFP-144 | TQFP-144 - same | TQFP-144 - same | TQFP-144 - same | TQFP-144 - same |
| Family | FLEX 8000 | FLEX 8000 | FLEX 8000 | FLEX 8000 | FLEX 8000 |
| Usable Gates | 8,000 | 8,000 | 8,000 | 8,000 | 8,000 |
| Logic Cells | 672 | 672 | 672 | 672 | 672 |
| Speed Grade | -4 | -4 (same) | -3 (slower) | -2 (slower) | -1 (slowest) |
| Maximum Internal Frequency | 125 MHz | 125 MHz | lower than -4 | lower than -3 | lowest |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V | 5 V |
| User I/Os | 112 | 112 | 112 | 112 | 112 |
| 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 |
| Configuration PROM Support | EPC1 / EPC1064 / EPC1213 / EPC1441 | EPC1 / EPC1064 / EPC1213 / EPC1441 | EPC1 / EPC1064 / EPC1213 / EPC1441 | EPC1 / EPC1064 / EPC1213 / EPC1441 | EPC1 / EPC1064 / EPC1213 / EPC1441 |
| Approx. Unit Price (qty 100) | 21.95 USD | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
Key Differentiators
- Fastest available speed grade in the FLEX 8000 ATC144 family (vs EPF8820ATC144-3N)
- 'N' configuration suffix enables alternate configuration mode (vs EPF8820ATC144-4)
- Same TQFP-144 footprint as the rest of the FLEX 8000 ATC144 family (vs EPF8636ATC144 family)
Design Notes
The EPF8820ATC144-4N requires a stable 5 V ±5% supply on every VCC pin and a low-impedance ground return on every GND pin. Place 0.1 µF decoupling capacitors as close as possible to each VCC/GND pair and add a bulk 10–47 µF tantalum or aluminum polymer capacitor near the package. The 0.42 µm CMOS FLEX 8000 core draws transient current during configuration; an undersized supply can cause CONF_DONE to oscillate. Tie nCONFIG to VCC through a 10 kΩ pull-up and add a 0.01 µF cap to ground for clean reset at power-up.
Use a four-layer PCB with a continuous ground plane under the TQFP-144 device. Route all four dedicated clock inputs (CLK0–CLK3) with controlled impedance and length-matched to within 50 mil to minimize clock skew across LABs. Place the EPC1441 (or alternate) serial configuration PROM within 50 mm of the FPGA data pins and keep DCLK short and shielded by ground on both sides. The FastTrack interconnect is sensitive to long stubs — keep all user I/O traces under 50 mm when possible, and use series termination for outputs driving more than 25 mm of trace on the board.
Three pitfalls recur when bringing up a FLEX 8000 design. First, MSEL0/MSEL1 must match the configuration mode you intend (serial vs parallel); leaving them floating selects an illegal mode. Second, the JTAG chain order matters when multiple devices share TDI/TDO — TCK must reach every device within 50 ns skew or boundary-scan will fail. Third, do not exceed the 5 V absolute-maximum on any I/O pin; legacy designs that connect the FPGA directly to 5 V TTL busses are usually fine, but 5.5 V transients will damage the input structures.
The TQFP-144 package has moderate thermal resistance; at maximum toggle activity the device can dissipate up to 1.5 W. Estimated: at 125 MHz with 50% I/O toggle rate on 112 outputs, core current is roughly 250 mA plus I/O current up to 50 mA per bank. Provide at least 10 cm² of continuous copper pour on the top layer connected to the GND pins to spread heat. For sealed enclosures with no airflow, derate the clock frequency by 10–15% to keep the junction below 100 °C.
Compliance Information
Compliance status not stated in the Verified Web Data. As a legacy Altera part, original datasheets predate RoHS mandate; 'N' suffix historically denotes a lead-free finish option but confirmation requires manufacturer documentation. AEC-Q100 not applicable — this is a commercial-grade 0–70 °C FPGA, not automotive-qualified.