EPM5032LC-25 - 32-Macrocell MAX 5000 EPLD, 25ns, PLCC-28 | Intel / Altera
MPN: EPM5032LC-25 ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $18.5 | $18.50 |
| 10 | $15.75 | $157.50 |
| 100 | $12.4 | $1,240.00 |
| 500 | $9.85 | $4,925.00 |
| 1,000 | $8.2 | $8,200.00 |
Drop-in alternatives for EPM5032LC-25 — 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:
EPM5032LC-20
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$8.4 / Unit
View Datasheet →EPM5032LC-15
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$8.2 / Unit
View Datasheet →EPM5032JC-25
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
EPM5032JC-20
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$9.75 / Unit
View Datasheet →EPM5032JC
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$13.5 / Unit
View Datasheet →EPM5032DC-25
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$3.55 / Unit
View Datasheet →EPM5032LC-25 Maximum Ratings & Electrical Characteristics
| Device Family | MAX 5000 |
| Architecture | PAL-type EPLD (Erasable Programmable Logic Device) |
| Technology | CMOS, UV-erasable / OTP |
| Macrocells | 32 |
| Product Terms | 320 |
| Dedicated Inputs | 7 |
| I/O Pins | 16 bidirectional |
| Total Inputs | 24 (7 dedicated + 16 I/O used as input) |
| Propagation Delay (tPD) | 25 ns |
| Maximum Internal Frequency | 62.5 MHz |
| Supply Voltage (VCC) | 5 V ±10% (4.5 V to 5.5 V) |
| I/O Standard | 5 V CMOS |
| Operating Temperature | 0 °C to +70 °C (commercial, "LC" suffix) |
| Package | 28-pin PLCC (JEDEC S-PQCC-J28), 1.27 mm pitch |
| Mounting Type | Surface Mount, socket-compatible |
| Configuration Cell | Programmable interconnect array (PIA), OTP / UV-erasable |
| RoHS Status | Not RoHS compliant (legacy Altera product) |
EPM5032LC-25 Pin Configuration
| Pin 1 | I/O — Bidirectional I/O pin 0 |
| Pin 2 | I/O — Bidirectional I/O pin 1 |
| Pin 3 | I/O — Bidirectional I/O pin 2 |
| Pin 4 | I/O — Bidirectional I/O pin 3 |
| Pin 5 | I/O — Bidirectional I/O pin 4 |
| Pin 6 | I/O — Bidirectional I/O pin 5 |
| Pin 7 | I/O — Bidirectional I/O pin 6 |
| Pin 8 | I/O — Bidirectional I/O pin 7 |
| Pin 9 | DIN — Dedicated input 0 |
| Pin 10 | DIN — Dedicated input 1 |
| Pin 11 | DIN — Dedicated input 2 |
| Pin 12 | GND — Ground |
| Pin 13 | DIN — Dedicated input 3 |
| Pin 14 | DIN — Dedicated input 4 |
| Pin 15 | DIN — Dedicated input 5 |
| Pin 16 | DIN — Dedicated input 6 |
| Pin 17 | I/O — Bidirectional I/O pin 8 |
| Pin 18 | I/O — Bidirectional I/O pin 9 |
| Pin 19 | I/O — Bidirectional I/O pin 10 |
| Pin 20 | I/O — Bidirectional I/O pin 11 |
| Pin 21 | I/O — Bidirectional I/O pin 12 |
| Pin 22 | I/O — Bidirectional I/O pin 13 |
| Pin 23 | I/O — Bidirectional I/O pin 14 |
| Pin 24 | I/O — Bidirectional I/O pin 15 |
| Pin 25 | VCC — +5 V supply |
| Pin 26 | NC — Not connected (per datasheet) |
| Pin 27 | NC — Not connected (per datasheet) |
| Pin 28 | NC — Not connected (per datasheet) |
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
EPM5032LC-25 is suitable for 7 applications: Legacy Glue-Logic Replacement, Address Decoding and Chip-Select Generation, Bus-Interface Bridging (8-bit to 16-bit, etc.), State Machine and Sequencer Implementation, Industrial Control Boards (Long-Lifecycle), Pin-Compatible Refresh of MAX 5000 Designs, Legacy Prototyping and Education.
Legacy Glue-Logic Replacement
The EPM5032LC-25 is a classic choice for replacing 5V TTL/CMOS glue logic in legacy systems. With 32 PAL-type macrocells and 320 product terms, it consolidates dozens of 74-series gates into a single PLCC-28 device, reducing board area and BOM count. Its 25 ns propagation delay comfortably handles combinational paths up to about 30 MHz, and the 5V CMOS I/O matches the original TTL thresholds without level shifters. Best fit: production-line rebuilds of legacy 5V boards where the original PAL/GAL parts are obsolete. Designers should leave one NC pin open for in-system test access.
Recommended
Address Decoding and Chip-Select Generation
The EPM5032LC-25's 7 dedicated inputs plus 16 I/O pins accept a full 24-bit address bus, and its 320 product terms can decode multiple chip-select outputs without exhausting macrocell resources. The 25 ns propagation delay adds at most one wait-state to a 30 MHz CPU memory cycle, which is acceptable for most peripheral decoding. The PLCC-28 socket lets prototype boards iterate before committing to a soldered assembly. Best fit: 80C186, 68EC000, and 80188 system designs needing decode for SRAM, ROM, and peripheral chips. Use one macrocell per output enable to keep timing deterministic.
Recommended
Bus-Interface Bridging (8-bit to 16-bit, etc.)
The EPM5032LC-25 is widely used to bridge between mismatched bus widths in legacy 5V systems - for example, multiplexing an 8-bit peripheral onto a 16-bit data bus or generating the upper-byte write strobe. Its 16 bidirectional I/O pins are sufficient for 8-bit data plus control signals, and the 25 ns delay adds only a fraction of a bus cycle. The PLCC-28 footprint allows the bridge to sit adjacent to the bus connector for short, clean traces. Best fit: PC/104, ISA, and VME bus adapters where modern FPGAs are overkill.
Recommended
State Machine and Sequencer Implementation
With 32 macrocells and a 62.5 MHz maximum internal clock frequency, the EPM5032LC-25 implements state machines and sequencers that are awkward to build in discrete 74LS logic. Each macrocell holds an 8-bit register, so the part can realize a 32-state FSM or a 32-bit-wide sequencing register with predictable timing. The 25 ns propagation delay fits sequencers clocked up to about 25 MHz, and the UV-erasable (or OTP) configuration preserves state through power cycles. Best fit: industrial controllers, test-equipment sequencers, and legacy peripheral controllers.
Recommended
Industrial Control Boards (Long-Lifecycle)
The EPM5032LC-25 is a workhorse on long-lifecycle industrial controllers where 15-to-25-year field support is mandatory. Its PLCC-28 package is socket-compatible, which simplifies field replacement; its 5V CMOS I/O is robust against industrial noise; and its PAL-type macrocell architecture is deterministic and well-understood by long-tenured technicians. The 0 °C to +70 °C commercial temperature range (LC suffix) is acceptable for climate-controlled cabinets, while the EPM5032JC-25 industrial variant covers harsher enclosures. Best fit: PLC backplanes, motor-drive interface boards, and SCADA I/O cards.
Recommended
Pin-Compatible Refresh of MAX 5000 Designs
When a board originally designed around a MAX 5000 EPLD (EPM5032, EPM5064, etc.) needs repair or refresh, the EPM5032LC-25 is the most readily available drop-in part. Its PLCC-28 footprint, 32-macrocell architecture, and 5V CMOS I/O match the original socket exactly, so replacement requires no board rework. The same bitstream that programs the original part can be reloaded into the EPM5032LC-25, provided the speed grade change does not violate the original timing budget. Best fit: maintenance depots and third-party repair shops servicing installed-base MAX 5000 hardware.
Recommended
Legacy Prototyping and Education
The EPM5032LC-25 remains a useful teaching aid for university digital-design labs because its PAL-type macrocell architecture exposes students to product-term allocation, PIA routing, and JTAG-free ISP flows without the complexity of modern FPGA toolchains. The PLCC-28 socket on a standard breadboard adapter lets students erase and reprogram the part (windowed UV variant) or treat it as one-time programmable. The 32-macrocell capacity is enough for laboratory exercises on FSMs, decoders, and bus arbiters. Best fit: EE undergraduate labs and continuing-education short courses on PLD design.
Recommended
Recommended Products Summary
Engineering reference data for EPM5032LC-25 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | EPM5032LC-20 | EPM5032LC-15 | EPM5032JC-25 | EPM5032JC-20 | EPM5032JC | EPM5032DC-25 |
|---|---|---|---|---|---|---|---|
| Brand | Altera | Altera | Altera | Altera | Altera | Altera | Altera |
| Package | PLCC-28 (JEDEC S-PQCC-J28) | PLCC-28 (JEDEC S-PQCC-J28) - same | PLCC-28 (JEDEC S-PQCC-J28) - same | PLCC-28 (JEDEC S-PQCC-J28) - same | PLCC-28 (JEDEC S-PQCC-J28) - same | PLCC-28 (JEDEC S-PQCC-J28) - same | PLCC-28 (JEDEC S-PQCC-J28) - same |
| Macrocells | 32 | 32 | 32 | 32 | 32 | 32 | 32 |
| Propagation Delay (tPD) | 25 ns | 20 ns (-20%) | 15 ns (-40%) | 25 ns (same) | 20 ns (-20%) | [DATA_NEEDED] | 25 ns (same) |
| Operating Temperature | 0 °C to +70 °C (commercial) | 0 °C to +70 °C (commercial) | 0 °C to +70 °C (commercial) | -40 °C to +85 °C (industrial) | -40 °C to +85 °C (industrial) | -40 °C to +85 °C (industrial) | 0 °C to +70 °C (commercial) |
| Supply Voltage | 5 V ±10% | 5 V ±10% | 5 V ±10% | 5 V ±10% | 5 V ±10% | 5 V ±10% | 5 V ±10% |
| Maximum Internal Frequency | 62.5 MHz | 62.5 MHz | 62.5 MHz | 62.5 MHz | 62.5 MHz | 62.5 MHz | 62.5 MHz |
| Product Terms | 320 | 320 | 320 | 320 | 320 | 320 | 320 |
| Configuration Cell Type | UV-erasable / OTP | UV-erasable / OTP | UV-erasable / OTP | UV-erasable / OTP | UV-erasable / OTP | UV-erasable / OTP | Ceramic windowed UV-erasable |
Key Differentiators
- Same-family faster drop-in for high-speed decode roles (vs EPM5032LC-20)
- Industrial-temperature variant available in the same package (vs EPM5032JC-25)
- Reprogrammable UV-erasable ceramic variant for field reconfiguration (vs EPM5032DC-25)
Design Notes
Estimated: at 5 V supply and 62.5 MHz toggling all 16 I/O pins with 50 pF loads, ICC can reach 80 to 120 mA. Place a 0.1 µF ceramic decoupling capacitor within 5 mm of the VCC pin (pin 25) and a 10 µF tantalum or ceramic bulk capacitor within 25 mm. Add a ferrite bead on the VCC trace if the EPLD shares a 5 V plane with switching regulators. The EPM5032LC-25 has no power-on-reset (POR) spec beyond VCC ramp time, so keep the ramp monotonic and slower than 100 ms to avoid PROM/EPROM latch-up during programming.
Use a PLCC-28 socket (e.g., 3M Textool or Augat) on prototype boards to simplify device swap and UV erasure. Keep I/O traces shorter than 50 mm to avoid ringing on the 5 V CMOS edges; series-damp each output with 33 Ω if the trace exceeds 25 mm. Provide a ground plane on the layer directly beneath the device for thermal dissipation and return-current continuity. Leave the three NC pins (26, 27, 28) accessible as test points in case the bitstream routes signals there in future revisions.
Three pitfalls to avoid with the EPM5032LC-25: (1) Do not apply 3.3 V signals to inputs - the part uses 5 V CMOS thresholds and 3.3 V is below VIL max, causing undefined logic levels. (2) Do not exceed 7 mA source/sink per I/O - the older CMOS output stage is weaker than modern CPLDs and will sag. (3) Do not hot-plug a programmed device into a live 5 V board - the EPROM cell can latch if VCC rises faster than 1 V/µs. Add a 100 Ω series resistor on VCC if hot-swap is unavoidable.
Estimated: route the global clock on pin 9 (DIN0) as a guarded trace with 4× to 8× dielectric clearance on each side, and place a 33 Ω series resistor within 10 mm of the EPLD clock pin to dampen reflections. Group all dedicated inputs on one side of the package (pins 9 to 11 and 13 to 16) and reserve the opposite side (pins 17 to 24) for outputs driving the same bus to minimize PIA congestion. Tie any unused dedicated inputs to GND through 10 kΩ resistors to prevent floating CMOS inputs.
Compliance Information
Legacy Altera MAX 5000 product with tin-lead (SnPb) PLCC-28 terminations - not RoHS compliant. AEC-Q100 not applicable (this is a commercial/industrial PLD, not an automotive-grade IC). REACH, halogen-free, and conflict-minerals status not stated in the available datasheet excerpts; contact Altera/Intel for confirmation before EU-bound shipments.
