EPM5032JC25 - 32-Macrocell MAX 5000 EPLD, 25ns | Altera
MPN: EPM5032JC25 β End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $38.5 | $38.50 |
| 10 | $34.2 | $342.00 |
| 100 | $29.8 | $2,980.00 |
| 500 | $26.4 | $13,200.00 |
| 1,000 | $23.95 | $23,950.00 |
Drop-in alternatives for EPM5032JC25 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:
EPM5032JC-20
β Drop-Inβ In Stock
$9.75 / Unit
View Datasheet βEPM5032JC
β Drop-Inβ In Stock
$13.5 / Unit
View Datasheet βEPM5032DC-25
β Drop-Inβ In Stock
$3.55 / Unit
View Datasheet βEPM5032DM-25
β Drop-Inπ Reference alternative (not in catalog)
EPM5016DC-20
β Drop-Inβ In Stock
$16.5 / Unit
View Datasheet βEPM5032JC25 Maximum Ratings & Electrical Characteristics
| Family | MAX 5000 |
| Device | EPM5032 |
| Logic Elements | 32 macrocells |
| Propagation Delay (tPD) | 25 ns |
| Maximum Internal Frequency | 62.5 MHz |
| Product Terms | 320 |
| Flip-Flops | 32 |
| Dedicated Inputs | 7 |
| Bidirectional I/O Pins | 16 |
| Total Inputs to Array | 24 |
| Number of Outputs | 16 |
| Architecture | PAL-type macrocells with global Programmable Interconnect Array (PIA) |
| Technology | CMOS EPROM, UV-erasable (windowed) / OTP |
| Supply Voltage | 5 V (TTL-level I/O) |
| Package | 28-pin PLCC (JC) |
| Mounting Type | Surface Mount |
EPM5032JC25 Pin Configuration
| Pin 1 | I/O0 β Bidirectional I/O pin 0 |
| Pin 2 | I/O1 β Bidirectional I/O pin 1 |
| Pin 3 | I/O2 β Bidirectional I/O pin 2 |
| Pin 4 | I/O3 β Bidirectional I/O pin 3 |
| Pin 5 | I/O4 β Bidirectional I/O pin 4 |
| Pin 6 | I/O5 β Bidirectional I/O pin 5 |
| Pin 7 | I/O6 β Bidirectional I/O pin 6 |
| Pin 8 | I/O7 β Bidirectional I/O pin 7 |
| Pin 9 | IN0 β Dedicated input 0 |
| Pin 10 | IN1 β Dedicated input 1 |
| Pin 11 | IN2 β Dedicated input 2 |
| Pin 12 | GND β Ground |
| Pin 13 | IN3 β Dedicated input 3 |
| Pin 14 | IN4 β Dedicated input 4 |
| Pin 15 | IN5 β Dedicated input 5 |
| Pin 16 | IN6 β Dedicated input 6 |
| Pin 17 | I/O8 β Bidirectional I/O pin 8 |
| Pin 18 | I/O9 β Bidirectional I/O pin 9 |
| Pin 19 | I/O10 β Bidirectional I/O pin 10 |
| Pin 20 | I/O11 β Bidirectional I/O pin 11 |
| Pin 21 | I/O12 β Bidirectional I/O pin 12 |
| Pin 22 | I/O13 β Bidirectional I/O pin 13 |
| Pin 23 | I/O14 β Bidirectional I/O pin 14 |
| Pin 24 | I/O15 β Bidirectional I/O pin 15 |
| Pin 25 | NC β Not connected (per datasheet) |
| Pin 26 | NC β Not connected (per datasheet) |
| Pin 27 | NC β Not connected (per datasheet) |
| Pin 28 | VCC β +5 V supply |
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
EPM5032JC25 is suitable for 6 applications: Microprocessor Address Decoding and Chip-Select Generation, Bus Interface Glue Logic, State-Machine Controllers, DMA and Bus Arbitration, Peripheral Interface Adapters, Legacy Industrial Control Replacement.
Microprocessor Address Decoding and Chip-Select Generation
The EPM5032JC25 is well suited for generating decoded chip-select signals and memory maps in 8-bit and 16-bit microprocessor systems. Its 32 macrocells can each absorb a wide AND-OR Boolean expression, replacing 4-6 standard 22V10 PALs while delivering a deterministic 25 ns pin-to-pin delay that fits comfortably inside 8 MHz 8086/68k and even 16 MHz 80286 read/write cycles. With 320 product terms feeding a global PIA, designers can re-map an entire memory decoder in one device, reducing board area and improving noise immunity versus discrete 74LS logic.
Recommended
Bus Interface Glue Logic
Standard microprocessor buses need glue logic for buffering, latching, and protocol conversion. The EPM5032JC25 packs up to 16 bidirectional I/O plus 7 dedicated inputs and 16 registered outputs, allowing the device to absorb an entire ISA or expansion-bus interface in one chip. The 25 ns tPD meets ISA bus AC timing with margin, and the 5 V TTL I/O eliminates level shifters when interfacing to standard peripherals. Designers migrating discrete 74FCT/74LS glue to a single EPLD gain reduced board real-estate, lower power, and easier re-spin via JEDEC fuse-map changes.
Recommended
State-Machine Controllers
Finite state machines are a classic MAX 5000 use case, and the EPM5032JC25 supports up to 32 encoded or one-hot state bits distributed across its four logic array blocks. The 25 ns delay combined with 32 flip-flops per device enables multi-state controllers running at clock rates up to the 62.5 MHz internal toggle limit, suitable for protocol sequencers, arbitration logic, and motor-control state machines. The deterministic PIA delay allows worst-case state-transition timing to be calculated by inspection, simplifying safety analysis for industrial controllers.
Recommended
DMA and Bus Arbitration
Multi-master systems require arbitration logic to grant the bus to the highest-priority requesting master while preventing conflicts. The EPM5032JC25's combination of dedicated inputs for request/grant signals, registered outputs for grant acknowledgment, and product-term-rich macrocells for priority encoding makes it a strong choice for centralized arbiter implementations. The 25 ns tPD keeps arbitration latency well below typical ISA or VMEbus grant windows, and the 32-macrocell capacity supports 4-8 request inputs with rotating or fixed priority.
Recommended
Peripheral Interface Adapters
Legacy peripherals such as parallel-port controllers, GPIB transceivers, and SCSI glue benefit from consolidation into a single EPLD. The EPM5032JC25's 16 bidirectional I/O pins can emulate an 8-bit data port plus handshake, while dedicated inputs carry strobe and ready signals. Replacing 3-5 discrete 74LS buffers and latches with one MAX 5000 device reduces the BOM, improves AC noise margins through registered outputs, and lets designers re-customize peripheral timing by simply editing the JEDEC fuse map during development.
Recommended
Legacy Industrial Control Replacement
Industrial control boards built in the late 1980s and 1990s are still in service, and many use the EPM5032JC25 for sequencing, watchdog, and I/O-expansion logic. When a board fails, the OEM must source an exact drop-in replacement, which the JC25 still provides from aftermarket distributors. The CMOS EPROM technology and 5 V TTL I/O match the surrounding TTL logic without re-engineering, and the 25 ns delay is adequate for sub-microsecond control loops typical of stepper-motor drivers and process-control front-ends.
Recommended
Recommended Products Summary
Engineering reference data for EPM5032JC25 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | EPM5032JC-20 | EPM5032JC | EPM5032DC-25 | EPM5032DM-25 | EPM5016DC-20 |
|---|---|---|---|---|---|---|
| Brand | Altera | Altera - same brand | Altera - same brand | Altera - same brand | Altera - same brand | Altera - same brand |
| Package | 28-pin PLCC (JC) | 28-pin PLCC (JC) - same | 28-pin PLCC (JC) - same | 24-pin CERDIP (DC) - different | 24-pin CERDIP (DM) - different | 24-pin CERDIP (DC) - different |
| Macrocells | 32 | 32 | 32 | 32 | 32 | 16 |
| Propagation Delay (tPD) | 25 ns | 20 ns | Commercial (no -xx suffix, slower) | 25 ns | 25 ns | 20 ns |
| Max Internal Frequency | 62.5 MHz | 62.5 MHz | [DATA_NEEDED] | 62.5 MHz | 62.5 MHz | [DATA_NEEDED] |
| Product Terms | 320 | 320 | 320 | 320 | 320 | [DATA_NEEDED] |
| Bidirectional I/O Pins | 16 | 16 | 16 | 16 | 16 | [DATA_NEEDED] |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
Key Differentiators
- Faster speed grade than -20 variant, same die (vs EPM5032JC-20)
- Same-die pin-compatible upgrade path (vs EPM5032JC)
- Higher density than 16-macrocell sibling (vs EPM5016DC-20)
Design Notes
The EPM5032JC25 operates from a single 5 V supply. Decouple VCC with a 0.1 uF ceramic capacitor placed within 5 mm of the PLCC pin-28 VCC lead, and bulk-decouple with a 10 uF tantalum or low-ESR electrolytic at the board's 5 V rail entry point. The CMOS EPROM array draws current primarily during programming and AC switching; during steady-state operation the Icc is in the low mA range, but transient demand during simultaneous output switching can exceed 50 mA. Add a ferrite bead on the 5 V feed to the socketed PLCC if multiple EPLDs switch simultaneously to reduce rail collapse.
The 28-pin PLCC socket should be a low-profile machine-pin or chipcarrier socket (e.g., 3M Textool or equivalent) with a retention clip to survive vibration and thermal cycling. Route all I/O signals on the inner PCB layers to keep the PLCC socket footprint free for decoupling. The 28-pin PLCC's 1.27 mm pitch demands 0.2 mm trace/space design rules minimum; allow at least 0.5 mm clearance between adjacent PLCC pads to avoid solder bridges during hand-rework of obsolete parts.
Do not attempt UV erasure on the EPM5032JC25 - the 'JC' suffix denotes a windowless plastic PLCC, making the part one-time-programmable (OTP). For prototypes that require multiple design iterations, use the ceramic-windowed 'DC' or 'DM' variants in a windowed CERDIP package and erase under a UV EPROM eraser for 20-30 minutes. Also avoid mixing -25 and -20 speed grades on the same bus without re-checking timing: the -20 is 5 ns faster and may introduce hold-time violations on synchronous paths designed for the -25 timing.
Place the EPM5032JC25 socket close to the bus connectors and decoded peripherals to minimize stub lengths on address and data lines. Keep all 5 V decoupling within 5 mm of the VCC/GND pins (PLCC pin 28 / pin 12). For designs with both a 28-pin PLCC EPM5032 and a second CPLD/FPGA, isolate their ground returns to a single 0 V star point to prevent ground bounce from the larger device coupling into the EPLD's analog-style PIA sense amps. Use a continuous ground plane on the layer beneath the socket footprint.
Although the 25 ns propagation delay is slow by modern standards, address and strobe edges can still produce ringing on unterminated bus traces longer than 50 mm. Source-terminate each bus driver with a 33-ohm resistor in series when driving the EPM5032JC25 inputs over 50 mm of trace, especially when the bus runs above 8 MHz. The EPLD's TTL-compatible input thresholds (VIL=0.8 V, VIH=2.0 V) tolerate moderate undershoot, but sustained ringing below 0 V can trigger input-latchup in older CMOS EPROM processes.
Compliance Information
EPM5032JC25 is an obsolete Altera part; explicit RoHS/REACH compliance not stated in available sources. Compliance data would need to be retrieved from the original Altera datasheet family or via the Intel FPGA (current owner) product discontinuation records.
