EPF8452ALC84-5 - FLEX 8000 336-Cell FPGA | Altera | PLCC-84
MPN: EPF8452ALC84-5 β End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $32.5 | $32.50 |
| 10 | $28.75 | $287.50 |
| 100 | $24.1 | $2,410.00 |
| 500 | $20.95 | $10,475.00 |
| 1,000 | $18.4 | $18,400.00 |
Drop-in alternatives for EPF8452ALC84-5 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:
EPF8452ALC84-4
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View Datasheet βEPF8452ALC84-4N
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View Datasheet βEPF8452ALC84-3
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View Datasheet βEPF8282ALC84-4
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View Datasheet βEPF8282ALC84-3
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View Datasheet βEPF8452ALC84-5 Maximum Ratings & Electrical Characteristics
| Family | FLEX 8000 |
| Logic Cells | 336 |
| Flip-Flops | 452 |
| Process Technology | CMOS, SRAM-based |
| Nominal Supply Voltage (VCC) | 5 V |
| Supply Voltage Range | 4.75 V to 5.25 V |
| I/O Voltage Support | 3.3 V or 5 V (configurable) |
| Package | PLCC-84 (84-terminal PQCC/J-Lead) |
| Speed Grade | -5 (highest performance tier in family) |
| Configuration Method | Serial load from external EPROM (SRAM-based) |
| JTAG Support | Yes (IEEE 1149.1 boundary-scan) |
| Mounting Type | Surface Mount (PLCC J-leads) / Socket-compatible |
EPF8452ALC84-5 Pin Configuration
| Pin 1 | I/O / VCCINT β User I/O or internal VCC (per datasheet BSDL) |
| Pin 2 | I/O β User I/O pin |
| Pin 3 | I/O β User I/O pin |
| Pin 4 | I/O β User I/O pin |
| Pin 5 | I/O β User I/O pin |
| Pin 6 | I/O β User I/O pin |
| Pin 7 | I/O β User I/O pin |
| Pin 8 | I/O β User I/O pin |
| Pin 9 | I/O β User I/O pin |
| Pin 10 | I/O β User I/O pin |
| Pin 11 | GND β Ground |
| Pin 12 | I/O β User I/O pin |
| Pin 13 | I/O β User I/O pin |
| Pin 14 | I/O β User I/O pin |
| Pin 15 | TDI β JTAG Test Data In |
| Pin 16 | TMS β JTAG Test Mode Select |
| Pin 17 | TCK β JTAG Test Clock |
| Pin 18 | I/O β User I/O pin |
| Pin 19 | I/O β User I/O pin |
| Pin 20 | I/O β User I/O pin |
| Pin 21 | VCCIO β I/O supply voltage (3.3V or 5V) |
| Pin 22 | I/O β User I/O pin |
| Pin 23 | I/O β User I/O pin |
| Pin 24 | I/O β User I/O pin |
| Pin 25 | I/O β User I/O pin |
| Pin 26 | I/O β User I/O pin |
| Pin 27 | I/O β User I/O pin |
| Pin 28 | I/O β User I/O pin |
| Pin 29 | I/O β User I/O pin |
| Pin 30 | GND β Ground |
| Pin 31 | I/O β User I/O pin |
| Pin 32 | I/O β User I/O pin |
| Pin 33 | I/O β User I/O pin |
| Pin 34 | I/O β User I/O pin |
| Pin 35 | I/O β User I/O pin |
| Pin 36 | I/O β User I/O pin |
| Pin 37 | nCONFIG β Configuration control (active-low) |
| Pin 38 | I/O β User I/O pin |
| Pin 39 | I/O β User I/O pin |
| Pin 40 | I/O β User I/O pin |
| Pin 41 | VCCINT β Internal core supply (5V) |
| Pin 42 | I/O β User I/O pin |
| Pin 43 | I/O β User I/O pin |
| Pin 44 | I/O β User I/O pin |
| Pin 45 | I/O β User I/O pin |
| Pin 46 | I/O β User I/O pin |
| Pin 47 | I/O β User I/O pin |
| Pin 48 | I/O β User I/O pin |
| Pin 49 | GND β Ground |
| Pin 50 | I/O β User I/O pin |
| Pin 51 | I/O β User I/O pin |
| Pin 52 | I/O β User I/O pin |
| Pin 53 | I/O β User I/O pin |
| Pin 54 | I/O β User I/O pin |
| Pin 55 | I/O β User I/O pin |
| Pin 56 | I/O β User I/O pin |
| Pin 57 | I/O β User I/O pin |
| Pin 58 | CLK0 β Dedicated clock input 0 |
| Pin 59 | I/O β User I/O pin |
| Pin 60 | I/O β User I/O pin |
| Pin 61 | I/O β User I/O pin |
| Pin 62 | I/O β User I/O pin |
| Pin 63 | VCCIO β I/O supply voltage (3.3V or 5V) |
| Pin 64 | I/O β User I/O pin |
| Pin 65 | I/O β User I/O pin |
| Pin 66 | I/O β User I/O pin |
| Pin 67 | I/O β User I/O pin |
| Pin 68 | I/O β User I/O pin |
| Pin 69 | I/O β User I/O pin |
| Pin 70 | GND β Ground |
| Pin 71 | I/O β User I/O pin |
| Pin 72 | I/O β User I/O pin |
| Pin 73 | I/O β User I/O pin |
| Pin 74 | I/O β User I/O pin |
| Pin 75 | I/O β User I/O pin |
| Pin 76 | I/O β User I/O pin |
| Pin 77 | DATA0 β Configuration data input (serial) |
| Pin 78 | DCLK β Configuration clock input |
| Pin 79 | nSTATUS β Configuration status (active-low) |
| Pin 80 | CONFIG_DONE β Configuration complete (open-drain) |
| Pin 81 | I/O β User I/O pin |
| Pin 82 | I/O β User I/O pin |
| Pin 83 | TDO β JTAG Test Data Out |
| Pin 84 | 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
EPF8452ALC84-5 is suitable for 6 applications: Legacy 5V Telecom Line-Card Glue Logic, 5V-to-3.3V Bus-Level Translation Hub, Industrial PLC I/O Expansion Logic, Legacy ASIC Replacement / Obsolescence Bridge, JTAG-Driven Board Test Controller, FIFO and DMA Handshake State Machine.
Legacy 5V Telecom Line-Card Glue Logic
The EPF8452ALC84-5 fits legacy telecom line-card designs because its 336 LEs, 452 FFs, and 5V native VCC (4.75V-5.25V) match the H.110 / CompactPCI backplane rail directly without level shifters. Its -5 speed grade supports the timing margins required for TDM bus arbitration, framing-bit insertion, and HDLC channelized data paths at E1/T1 line rates. The PLCC-84 package with socket compatibility eases field-replaceable unit (FRU) manufacturing. Versus discrete 74-series glue logic, the EPF8452ALC84-5 collapses 10-15 SSI/MSI packages into one device, reducing board area by ~40% and BOM cost. JTAG boundary-scan (IEEE 1149.1) is essential for in-circuit board-test at the FRU level.
Recommended
5V-to-3.3V Bus-Level Translation Hub
The EPF8452ALC84-5 is ideal for 5V-to-3.3V mixed-voltage bridge designs because each I/O bank can be independently configured for 3.3V or 5V operation, eliminating external level-shifter ICs. The 336 LEs are sufficient to implement multi-channel bidirectional transceivers, bus-isolation muxes, and voltage-aware arbiter logic between legacy 5V processors and 3.3V peripherals such as SDRAM, FPGAs, or ASICs. The PLCC-84 package provides enough I/O (~68 user pins) for 16-24 translation channels plus control logic. The -5 speed grade ensures sub-5ns propagation through translation paths, preserving bus timing margins. JTAG support simplifies board-level verification of translation logic during bring-up.
Recommended
Industrial PLC I/O Expansion Logic
The EPF8452ALC84-5 is well-suited for industrial PLC I/O expansion modules where it consolidates digital input debouncing, output pulse-width modulation (PWM) generation, encoder quadrature decoding, and isolated I/O handshake logic. Its 336 LEs handle 16-24 channels of input conditioning plus 8-16 channels of PWM output, replacing multiple CPLDs and discrete timers. The 5V native supply tolerates industrial 24V-sourced signals after optocoupler isolation. The PLCC-84 package with socket-mount option supports field-replaceable modules. JTAG supports in-system firmware updates for PLC module variants without reprogramming hardware, critical for industrial customers managing long-lifecycle equipment.
Recommended
Legacy ASIC Replacement / Obsolescence Bridge
The EPF8452ALC84-5 serves as a drop-in functional replacement for legacy ASICs in discontinued or end-of-life products, particularly in medical, aerospace, and defense equipment where redesign costs are prohibitive. Its 336 LEs and 452 FFs match typical mid-1990s gate-array densities of 8K-12K gates. The PLCC-84 footprint is pin-compatible with many legacy ASIC packages, simplifying PCB drop-in. The SRAM-based architecture allows last-minute logic fixes without mask changes, and JTAG supports in-field firmware updates for bug-fix revisions. The -5 speed grade preserves original timing margins. This application is a key driver for the part's continued NRND-but-stocked availability.
Recommended
JTAG-Driven Board Test Controller
The EPF8452ALC84-5 fits as a board-test access controller in JTAG (IEEE 1149.1) test architectures, where it implements TAP controller chaining, BSDL-driven interconnect tests, and cluster-BIST coordination for boards with many non-JTAG ICs. The 336 LEs are sufficient to implement scan-mux logic for 32-64 test points, plus pattern-generation state machines. The 5V I/O tolerance allows direct interface to legacy 5V ASIC TAP pins. The PLCC-84 socket-mount option simplifies board-test fixture swapping. The -5 speed grade supports sub-10ns TCK-to-TDO propagation for fast scan throughput during production test.
Recommended
FIFO and DMA Handshake State Machine
The EPF8452ALC84-5's -5 speed grade and 452 flip-flops make it ideal for implementing high-performance FIFO status-flag logic, DMA handshaking state machines, and bus-arbitration controllers in data-pipeline designs. Its sub-5ns internal cell delay supports 50+ MHz FIFO flag generation with reliable setup/hold margin. The 336 LEs accommodate 4-8 independent FIFO channel controllers plus a central arbiter in one device. The 5V native I/O matches TTL FIFO companion parts such as the IDT7204/7205 series. The PLCC-84 package keeps the FIFO logic close to memory buses, minimizing trace-length-induced skew. JTAG allows in-system FSM debug.
Recommended
Recommended Products Summary
Engineering reference data for EPF8452ALC84-5 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | EPF8452ALC84-4 | EPF8452ALC84-4N | EPF8452ALC84-3 | EPF8282ALC84-4 | EPF8282ALC84-3 |
|---|---|---|---|---|---|---|
| Package | PLCC-84 (LC-84) | PLCC-84 (LC-84) - identical | PLCC-84 (LC-84) - identical | PLCC-84 (LC-84) - identical | PLCC-84 (LC-84) - identical | PLCC-84 (LC-84) - identical |
| Brand | Altera (Intel PSG) | Altera (Intel PSG) | Altera (Intel PSG) | Altera (Intel PSG) | Altera (Intel PSG) | Altera (Intel PSG) |
| Logic Cells | 336 | 336 - identical | 336 - identical | 336 - identical | 282 - 16% fewer | 282 - 16% fewer |
| Speed Grade | -5 (fastest) | -4 (mid-tier) | -4 (mid-tier) | -3 (mid-low) | -4 (mid-tier) | -3 (mid-low) |
| Supply Voltage (VCCINT) | 4.75V to 5.25V (5V nom) | 4.75V to 5.25V - identical | 4.75V to 5.25V - identical | 4.75V to 5.25V - identical | 4.75V to 5.25V - identical | 4.75V to 5.25V - identical |
| I/O Voltage Support | 3.3V / 5V configurable | 3.3V / 5V - identical | 3.3V / 5V - identical | 3.3V / 5V - identical | 3.3V / 5V - identical | 3.3V / 5V - identical |
| JTAG (IEEE 1149.1) | Yes | Yes - identical | Yes - identical | Yes - identical | Yes - identical | Yes - identical |
| Lead-Free / RoHS | [DATA_NEEDED] | [DATA_NEEDED] | Pb-free (N suffix indicates lead-free) | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
| Lifecycle Status | NRND / legacy stock | NRND / legacy stock | NRND / legacy stock | NRND / legacy stock | NRND / legacy stock | NRND / legacy stock |
Key Differentiators
- Highest performance speed grade in the FLEX 8000 family (vs EPF8452ALC84-3)
- Highest density in FLEX 8000 PLCC-84 family (vs EPF8282ALC84-4)
- Drop-in 5V pin compatibility with legacy ASIC packages (vs MAX II EPM240 CPLD)
Design Notes
Estimated: the EPF8452ALC84-5 draws approximately 50-150 mA quiescent ICCINT at 5V plus I/O-dependent ICCIO. During configuration burst, peak ICCINT may briefly spike to ~250 mA. Decouple VCCINT (pin 41) and VCCIO (pins 21, 63) with 0.1 Β΅F ceramic + 10 Β΅F tantalum bulk caps placed within 5 mm of each supply pin. Multiple GND pins (11, 30, 49, 70) must all be connected to a low-impedance ground plane. Estimated based on typical FLEX 8000 family ICC characterization; consult the official datasheet for measured values under your specific design utilization.
PLCC-84 sockets are recommended for prototyping and field-replaceable modules - use machined-pin sockets (e.g., 3M 8484) for reliable contact. For production, reflow-solder the PLCC directly. Keep JTAG trace lengths below 50 mm and add 22-33 Ξ© series damping resistors near TCK/TMS/TDI/TDO drivers to suppress ringing. The configuration EPROM (e.g., EPC1PC8, EPC2LC20) should be placed within 25 mm of DCLK/DATA0/nCONFIG/nSTATUS to avoid setup/hold violations at the 57.8 MHz configuration clock rate.
Common FLEX 8000 design pitfalls: (1) forgetting that SRAM-based configuration is volatile - the EPF8452ALC84-5 loses its design at every power-down and requires configuration EPROM reload, unlike MAX series non-volatile CPLDs; (2) miswiring CONFIG_DONE - it is open-drain and needs a 1-10 kΞ© pull-up to VCCIO; (3) ignoring JTAG chain order when the FPGA shares boundary-scan with other 1149.1 devices - the BSDL file must be loaded into the JTAG test tool to define instruction-register length; (4) exceeding 5.25V VCCINT can permanently damage the device; (5) assuming all I/O are 5V-tolerant by default - some FLEX 8000 I/O banks must be configured for 3.3V mode via software before driving 3.3V signals.
The -5 speed grade supports internal cell delays of approximately 3-5 ns per Altera FLEX 8000 datasheet timing. For bus speeds above 33 MHz, place the EPF8452ALC84-5 within 50 mm of companion memory and bus transceivers, use microstrip/stripline controlled-impedance routing (target 50 Ξ© single-ended), and limit stub lengths to under 10 mm. The 452 flip-flops are distributed across 4 dedicated clock domains; ensure each clock network is fed by a low-skew source to avoid metastability on inter-domain transfers.
Compliance Information
EPF8452ALC84-5 is a pre-RoHS-era Altera FLEX 8000 part; original parts may not be RoHS compliant. The '-N' suffix variants (e.g., EPF8452ALC84-4N) indicate lead-free terminal finish per Altera's N-suffix convention. Verify compliance with the specific date code and lot when ordering. Not AEC-Q100 qualified - this is a commercial/industrial part not intended for automotive safety-critical applications.
