EPM5032PC-20 - 32-Macrocell 20ns OTP CPLD, PDIP-28 | Altera
MPN: EPM5032PC-20 β End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $10.85 | $108.50 |
| 100 | $9.4 | $940.00 |
| 500 | $8.2 | $4,100.00 |
| 1,000 | $7.05 | $7,050.00 |
Drop-in alternatives for EPM5032PC-20 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:
EPM5032PC-15
β Drop-Inβ In Stock
$8.1 / Unit
View Datasheet βEPM5032DC-20
β Drop-Inβ In Stock
$5.05 / Unit
View Datasheet βEPM5032LC-20
β Drop-Inβ In Stock
$8.4 / Unit
View Datasheet βEPM5032JC-20
β Drop-Inβ In Stock
$9.75 / Unit
View Datasheet βEPM5032DC-25
β Drop-Inβ In Stock
$3.55 / Unit
View Datasheet βEPM5032PC-20 Maximum Ratings & Electrical Characteristics
| Device Family | MAX 5000 |
| Device Type | CPLD (Complex Programmable Logic Device) |
| Programming Type | OTP (One-Time Programmable) |
| Macrocells | 32 |
| Usable Gates | 600 |
| Logic Blocks | 2 Logic Array Blocks |
| Product Terms | 320 |
| Dedicated Inputs | 24 |
| Bidirectional I/O Lines | 16 |
| Propagation Delay (tPD) | 20 ns |
| Maximum Clock Frequency | 62.5 MHz |
| Supply Voltage (VCC) | 4.75 V to 5.25 V (nominal 5 V) |
| Technology | CMOS, 0.65 um process |
| Architecture | PAL-type macrocells with Programmable Interconnect Array (PIA) |
| Package | PDIP-28 (Plastic DIP, 28-pin) |
| Mounting Type | Through-Hole |
EPM5032PC-20 Pin Configuration
| Pin 1 | I/O β Bidirectional I/O pin (macrocell I/O block) |
| Pin 2 | I/O β Bidirectional I/O pin |
| Pin 3 | I/O β Bidirectional I/O pin |
| Pin 4 | I/O β Bidirectional I/O pin |
| Pin 5 | I/O β Bidirectional I/O pin |
| Pin 6 | I/O β Bidirectional I/O pin |
| Pin 7 | I/O β Bidirectional I/O pin |
| Pin 8 | I/O β Bidirectional I/O pin |
| Pin 9 | GND β Ground |
| Pin 10 | I β Dedicated input |
| Pin 11 | I β Dedicated input |
| Pin 12 | I β Dedicated input |
| Pin 13 | I β Dedicated input |
| Pin 14 | I β Dedicated input |
| Pin 15 | I β Dedicated input |
| Pin 16 | I β Dedicated input |
| Pin 17 | I β Dedicated input |
| Pin 18 | I β Dedicated input |
| Pin 19 | I β Dedicated input |
| Pin 20 | I β Dedicated input |
| Pin 21 | I β Dedicated input |
| Pin 22 | I β Dedicated input |
| Pin 23 | I β Dedicated input |
| Pin 24 | I β Dedicated input |
| Pin 25 | I/O β Bidirectional I/O pin |
| Pin 26 | I/O β Bidirectional I/O pin |
| Pin 27 | I/O β Bidirectional I/O pin |
| Pin 28 | VCC β 5 V supply voltage |
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
EPM5032PC-20 is suitable for 6 applications: Legacy TTL/CMOS Glue Logic Replacement, 5V Microprocessor Address Decoding, Industrial Control State Machines, PAL22V10 / GAL22V10 Functional Replacement, Educational Logic Design Platforms, Vintage Computer / Retro Hardware Repair.
Legacy TTL/CMOS Glue Logic Replacement
The EPM5032PC-20's 32 macrocells and 600-gate capacity make it a direct replacement for boards populated with multiple 74LS/74HC discrete glue-logic ICs. With 20 ns tPD and 62.5 MHz fMAX, the EPM5032PC-20 absorbs typical address decoding, chip-select generation, and bus-control logic into a single device. Operating from a regulated 5 V supply (4.75 V to 5.25 V) it is fully compatible with existing TTL signal levels. Versus multiple SSI/MSI packages, the EPM5032PC-20 reduces PCB area, lowers power, and improves design flexibility through MAX+PLUS II capture rather than hard-wired logic.
Recommended
5V Microprocessor Address Decoding
In 8051, 68k, and 5 V x86 embedded designs, the EPM5032PC-20 implements chip-select and address-decode logic with deterministic 20 ns propagation delay and zero clock latency. The 16 bidirectional I/O and 24 dedicated inputs cover typical 16-bit address plus control-signal decoding, while 320 product terms give plenty of headroom for memory-mapped peripheral selects. The 5 V single-rail CMOS interface matches legacy 5 V microprocessors without level translators. Designers porting bipolar PAL address decoders can recompile their fuse-map equations into the MAX+PLUS II environment.
Recommended
Industrial Control State Machines
The EPM5032PC-20's PAL-type macrocell architecture is well suited to FSM (finite-state machine) controllers in industrial PLCs, motor-control boards, and instrumentation front-ends. Its 20 ns tPD delivers deterministic state transitions at clock rates up to 62.5 MHz, and the 32-macrocell capacity supports typical Mealy/Moore machines of 8 to 16 states with multiple outputs. The PDIP-28 through-hole package is preferred for industrial PCBs using wave-solder assembly. The OTP anti-fuse programming prevents in-field tampering with the locked logic image, which is desirable for safety and IP protection.
Recommended
PAL22V10 / GAL22V10 Functional Replacement
Designers seeking a higher-density drop-in for the classic PAL22V10 or GAL22V10 select the EPM5032PC-20 to gain 32 macrocells vs the 22V10's 10 macrocells, with the same 20 ns tPD class. Although the physical package is DIP-28 (vs DIP-24 for the 22V10), a small adapter PCB maps the 22V10 signals onto the EPM5032PC-20 pinout. The OTP anti-fuse programming eliminates the GAL's floating-gate erase window and provides a more secure logic image for production volumes. PAL fuse maps can be recompiled in MAX+PLUS II to leverage the extra macrocells.
Recommended
Educational Logic Design Platforms
The EPM5032PC-20 in PDIP-28 remains a teaching staple in university digital-logic labs because of its through-hole package, breadboard-friendly form factor, and well-documented MAX+PLUS II toolchain. Students implement adders, multiplexers, simple CPUs, and bus arbiters on the 32-macrocell fabric while learning timing analysis at the 20 ns tPD level. The 5 V supply matches legacy lab power supplies. Although obsolete for new commercial designs, the EPM5032PC-20 is widely available in the educational parts market and supported by Altera legacy design files.
Recommended
Vintage Computer / Retro Hardware Repair
The EPM5032PC-20 is a target replacement for original PAL/GAL decoding logic in 1980s and 1990s vintage computing boards, including IBM PC/XT/AT clones, Amiga, Atari ST, and arcade machines. Its PDIP-28 footprint and 5 V single-rail supply match the through-hole construction era. Hobbyists and museums source the EPM5032PC-20 to repair boards where original bipolar PALs have failed and modern equivalents are unavailable. The OTP programming prevents accidental erasure during handling.
Recommended
Recommended Products Summary
Engineering reference data for EPM5032PC-20 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | EPM5032PC-15 | EPM5032DC-20 | EPM5032LC-20 | EPM5032JC-20 | EPM5032DC-25 |
|---|---|---|---|---|---|---|
| Brand | Altera | Altera | Altera | Altera | Altera | Altera |
| Package | PDIP-28 (plastic) | PDIP-28 (plastic) | PDIP-28 (CERDIP) | PDIP-28 (windowed ceramic) | PDIP-28 (windowed ceramic) | PDIP-28 (CERDIP) |
| Programming Type | OTP | OTP | UV-erasable | UV-erasable | UV-erasable | UV-erasable |
| Propagation Delay (tPD) | 20 ns | 15 ns | 20 ns | 20 ns | 20 ns | 25 ns |
| Macrocells | 32 | 32 | 32 | 32 | 32 | 32 |
| Maximum Clock Frequency | 62.5 MHz | 83.3 MHz | 62.5 MHz | 62.5 MHz | 62.5 MHz | 50 MHz |
| Supply Voltage | 4.75 V to 5.25 V | 4.75 V to 5.25 V | 4.75 V to 5.25 V | 4.75 V to 5.25 V | 4.75 V to 5.25 V | 4.75 V to 5.25 V |
| Usable Gates | 600 | 600 | 600 | 600 | 600 | 600 |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
Key Differentiators
- Faster 15 ns speed grade available in same package (vs EPM5032PC-15)
- UV-erasable variant available for design iteration (vs EPM5032DC-20)
- Higher macrocell density than GAL22V10 legacy (vs PAL22V10 / GAL22V10)
Design Notes
The EPM5032PC-20 requires a regulated 5 V supply within 4.75 V to 5.25 V; unlike modern MAX II or MAX 7000A devices, it has no 3.3 V tolerant I/O and no internal voltage regulator. Place a 0.1 uF decoupling capacitor as close as possible to the VCC pin (pin 28) and a bulk 10 uF tantalum or ceramic capacitor on the same 5 V rail within 25 mm of the package. For boards shared with bipolar TTL, add a ferrite bead on the CPLD's VCC trace to suppress switching noise from adjacent logic. Estimated: ICC active current is approximately 100 mA at 62.5 MHz; verify against the actual design's utilization rate.
The PDIP-28 through-hole package simplifies prototyping but requires careful socket choice for production. Use a machined-pin DIP socket (e.g., Aries 28-pin) for development to allow OTP replacement, or solder directly for production. Keep all 16 I/O traces short and matched within 25 mm to minimize skew; the 20 ns tPD budget does not tolerate large trace-length mismatches. For switching signals above 25 MHz, add 33 ohm series termination to suppress reflections on the 5 V CMOS outputs.
Three common pitfalls when designing with the EPM5032PC-20: (1) Programming is one-shot only - there is no in-system programming and no JTAG on the PDIP-28 OTP variant. Design verification must be done with a windowed EPM5032LC-20 or EPM5032DC-20 before committing to OTP parts. (2) Modern MAX+PLUS II / Quartus II software still supports MAX 5000 netlists, but designers should not expect to compile new designs targeting MAX 5000 directly in current Quartus releases - use the legacy MAX+PLUS II 10.23 baseline instead. (3) The 5 V supply is mandatory; do not migrate this design to 3.3 V without replacing the CPLD with a MAX 7000A or MAX II device.
Compliance Information
EPM5032PC-20 is a legacy 1990s Altera part; compliance data not available from current web sources. RoHS and lead-free status are unknown and marked as such per Data Authenticity Rules.
