EPF8452ATC100-4N - FLEX 8000 FPGA, 68 I/O, 100-TQFP | Altera
MPN: EPF8452ATC100-4N β Last Time Buy| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $10.95 | $109.50 |
| 100 | $9.4 | $940.00 |
| 500 | $8.25 | $4,125.00 |
| 1,000 | $7.1 | $7,100.00 |
Drop-in alternatives for EPF8452ATC100-4N β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
EPF8452ATC100-4
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View Datasheet βEPF8452ATC100-3N
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View Datasheet βEPF8452ATC100-3
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View Datasheet βEPF8452ATC100-4N Maximum Ratings & Electrical Characteristics
| Family | FLEX 8000 |
| Device Type | FPGA - Field Programmable Gate Array |
| Logic Elements | 336 LEs |
| Logic Array Blocks (LABs) | 42 LABs |
| User I/Os | 68 |
| Package | 100-TQFP |
| Package Code (per Partstack) | LFQFP |
| Terminal Form | GULL WING |
| Supply Voltage - Core | 5 V |
| VCCIO (I/O Supply) | 3.3 V or 5.0 V (per application requirement) |
| Speed Grade | -4 |
| Operating Temperature | 0 Β°C to 70 Β°C (commercial) |
| Configuration Method | CMOS SRAM, configured via parallel EPROM or Altera EPC1/EPC1064/EPC1213/EPC1441 serial device |
| In-Circuit Reconfigurability | Yes (ICR) |
| Boundary Scan / JTAG | Yes |
| Process Technology | CMOS |
| Logic Family | CMOS |
EPF8452ATC100-4N Pin Configuration
| Pin 1 | I/O β User I/O pin |
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| Pin 31 | GND β Ground |
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| Pin 63 | GND β Ground |
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| Pin 68 | I/O β User I/O pin |
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| Pin 94 | I/O β User I/O pin |
| Pin 95 | GND β Ground |
| Pin 96 | VCC β Core supply (5 V) |
| Pin 97 | VCCIO β I/O supply (3.3 V or 5.0 V) |
| Pin 98 | VCC β Core supply (5 V) |
| Pin 99 | VCCIO β I/O supply (3.3 V or 5.0 V) |
| Pin 100 | I/O β User I/O pin |
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
EPF8452ATC100-4N is suitable for 7 applications: Industrial Control Logic, Legacy Telecom Backplane Glue Logic, Test & Measurement Instrumentation, State-Machine and Protocol-Bridge Replacement, Avionics Subsystem (Legacy Retrofit), Medical Device Interface Boards, Server and Storage Bridge Logic.
Industrial Control Logic
The EPF8452ATC100-4N fits industrial control logic replacement because its 5 V core supply matches legacy 5 V PLC and motor-controller backplanes still common in factories deployed in the late 1990s. With 336 logic elements and 68 user I/Os, the device can replace multiple 74-series glue-logic ICs and small state machines on a single chip, reducing board area and improving reliability. Its in-circuit reconfigurability via SRAM allows firmware updates over JTAG without removing the card from the rack, which simplifies field maintenance. The -4 speed grade is sufficient for sub-50 MHz control loops and encoder/decoder interfaces typical in industrial automation.
Recommended
Legacy Telecom Backplane Glue Logic
The EPF8452ATC100-4N is commonly deployed as glue logic in legacy telecom backplanes where 5 V TTL signaling and TQFP-100 footprints are already designed in. Its 68 user I/Os can handle parallel bus arbitration, framing, and clock-distribution glue between DSP and memory devices. The JTAG boundary-scan support helps meet the IEEE 1149.1 board-test requirements that telecom OEMs mandate, and the FLEX 8000 architecture's predictable interconnect delays simplify static timing closure at 33 MHz PCI or H.110 bus rates. SRAM-based configuration also enables remote firmware upgrades across carrier networks.
Recommended
Test & Measurement Instrumentation
The EPF8452ATC100-4N's combination of 336 LEs and 68 I/Os is well matched to instrument front-ends where the FPGA implements custom trigger logic, waveform sequencing, and parallel-to-serial conversion. The 5 V VCCIO option allows direct interface to legacy 5 V ADC/DAC front-ends without level shifters, preserving analog signal integrity. JTAG boundary-scan enables bed-of-nails in-circuit test for manufacturing, while in-circuit reconfigurability lets one board hardware platform serve multiple instrument SKUs via firmware alone. The commercial 0-70 Β°C range covers laboratory environments.
Recommended
State-Machine and Protocol-Bridge Replacement
Engineers use the EPF8452ATC100-4N to replace discrete PAL/GAL state machines and TTL protocol-bridge chips when a design needs more I/O than a 22V10 can provide but does not justify a modern FPGA's tooling overhead. With 68 user I/Os, the device can host multiple parallel state machines on one chip, handling I2C-to-parallel, UART-to-ISA, or proprietary field-bus bridging. The 100-TQFP package offers manageable routing density for two-layer boards, and the -4 speed grade easily closes timing at standard async serial rates up to 1 Mbaud.
Recommended
Avionics Subsystem (Legacy Retrofit)
Long-life avionics subsystems originally built around FLEX 8000 still use the EPF8452ATC100-4N as a maintenance-of-stock part for line-replaceable units. Its commercial temperature range fits pressurized avionics bays, while the SRAM-based configuration allows firmware revisions without re-soldering. The 100-TQFP package is compatible with existing conformal-coated board layouts, and JTAG boundary-scan accelerates depot-level board testing. For new designs, however, a modernized Cyclone or MAX V device is recommended where DO-254 certification effort is required.
Recommended
Medical Device Interface Boards
The EPF8452ATC100-4N appears in long-life medical interface boards where its 5 V tolerance allows direct connection to legacy analog front-ends used in patient monitors and lab analyzers. The 336 LEs handle custom digital-filter pipelines, while 68 user I/Os interface parallel ADCs, keypads, and display controllers. SRAM reconfigurability supports in-the-field firmware updates for protocol changes (HL7, USB, serial), and the commercial temperature rating covers most clinical environments. The 100-TQFP package is well understood by medical-device PCB assembly lines and rework houses.
Recommended
Server and Storage Bridge Logic
The EPF8452ATC100-4N is found in legacy server and storage bridge boards where it implements bus adapters, RAID controller glue, and backplane management logic. The 68 user I/Os accommodate SCSI, SATA, and I2C management buses, while the 5 V VCCIO option simplifies interface to legacy 5 V peripherals. SRAM-based configuration supports firmware updates during scheduled maintenance windows without taking the host offline. The -4 speed grade is adequate for the storage-control clock rates typical of these subsystems.
Recommended
Recommended Products Summary
Engineering reference data for EPF8452ATC100-4N β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | EPF8452ATC100-4 | EPF8452ATC100-3N | EPF8452ATC100-3 |
|---|---|---|---|---|
| Brand | Altera (Intel) | Altera (Intel) | Altera (Intel) | Altera (Intel) |
| Package | 100-TQFP | 100-TQFP - same | 100-TQFP - same | 100-TQFP - same |
| Logic Elements | 336 LEs | 336 LEs | 336 LEs | 336 LEs |
| LABs | 42 LABs | 42 LABs | 42 LABs | 42 LABs |
| User I/Os | 68 I/Os | 68 I/Os | 68 I/Os | 68 I/Os |
| Speed Grade | -4 | -4 | -3 (faster) | -3 (faster) |
| Core Supply Voltage | 5 V | 5 V | 5 V | 5 V |
| VCCIO | 3.3 V or 5.0 V | 3.3 V or 5.0 V | 3.3 V or 5.0 V | 3.3 V or 5.0 V |
| Operating Temperature | 0 Β°C to 70 Β°C (commercial, 'N' suffix) | Industrial grade variant | 0 Β°C to 70 Β°C (commercial, 'N' suffix) | Industrial grade variant |
| Configuration | SRAM via EPC1/EPC1064/EPC1213/EPC1441 or parallel EPROM | SRAM via EPC1/EPC1064/EPC1213/EPC1441 or parallel EPROM | SRAM via EPC1/EPC1064/EPC1213/EPC1441 or parallel EPROM | SRAM via EPC1/EPC1064/EPC1213/EPC1441 or parallel EPROM |
| Lifecycle Status | Last-time-buy (legacy long-term-support) | Last-time-buy (legacy long-term-support) | Last-time-buy (legacy long-term-support) | Last-time-buy (legacy long-term-support) |
Key Differentiators
- Direct same-die drop-in for legacy 5 V backplanes (vs EPF8452ATC100-4)
- Mid-range -4 speed grade optimized for cost-sensitive designs (vs EPF8452ATC100-3N)
- Multi-volt VCCIO (3.3 V or 5 V) on the same package (vs Older FLEX 8000 variants without multi-volt I/O)
Design Notes
The EPF8452ATC100-4N requires a stable 5 V VCC rail plus a separate VCCIO rail that you must tie to either 3.3 V or 5.0 V depending on the I/O standard you need. According to the Altera datasheet, when VCCIO is 5.0 V the outputs are 5 V TTL-compatible; when it is 3.3 V the outputs meet 3.3 V LVTTL levels. Decouple each VCC/VCCIO pin with a 0.1 Β΅F ceramic placed within 5 mm of the pin, and add a bulk 10 Β΅F tantalum or aluminum electrolytic near the package. The JTAG TCK line is sensitive to noise, so route it over a continuous ground plane and keep it short.
Route the EPF8452ATC100-4N configuration signals (nCONFIG, nSTATUS, CONF_DONE, DCLK, DATA0) as a bus with matched lengths where possible, and place the EPC1/EPC1064/EPC1213/EPC1441 configuration device within 50 mm of the FPGA to keep the serial configuration bus robust. The 100-TQFP package has a 0.5 mm lead pitch, so use 0.20 mm trace/space and a 4-layer board with a continuous ground plane for impedance control. Expose all GND and unused I/O pins on the schematic and tie unused I/Os to a defined logic level (driven low is recommended) to reduce quiescent supply current.
Estimated: at -4 speed grade, internal timing closures above ~50 MHz require careful review of the FLEX 8000 timing model in Quartus II; designs that meet timing at -3 may fail at -4 without recompile. Do not assume the EPF8452ATC100-4N is hot-swappable - SRAM configuration is volatile and power-rail sequencing must allow VCC to stabilize before nCONFIG is released. According to the Altera datasheet, configuring the device requires a valid configuration clock and a properly-programmed EPC device; missing the configuration device causes the FPGA to remain in user-mode-0 with all I/Os tri-stated.
Compliance Information
RoHS / REACH / lead-free status not explicitly stated in the retrieved web data for the EPF8452ATC100-4N; [DATA_NEEDED] markers applied in the specs array. AEC-Q100 not applicable - this is a 5 V commercial-grade FPGA, not an automotive-grade part.
