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EPM5032DC-20 - 32-Macrocell UV PLD, 20ns DIP-20 | Altera
EPM5032DC20

EPM5032DC-20 - 32-Macrocell UV PLD, 20ns DIP-20 | Altera

The Altera EPM5032DC-20 is a 32-macrocell UV-erasable programmable Logic Device (PLD) from the MAX 5000 family, housed in a 20-pin ceramic DIP (DC) window package. It is built on a CMOS PAL-type architecture with a Programmable Interconnect Array (PIA) and supports up to 600 usable gates, with a 20 ns pin-to-pin propagation delay grade and a maximum toggle frequency around 71.4 MHz on a 5 V single supply. A Programmable Logic Device (PLD) is a general-purpose digital IC whose logic function and interconnect are defined by the user after manufacture, in contrast to a fixed-function ASIC or gate array. The MAX 5000 family belongs to the larger class of Complex Programmable Logic Devices (CPLDs), which sit hierarchically below FPGAs and above simple PAL/GAL devices in the programmable-logic taxonomy. Within that hierarchy, the EPM5032DC-20 offers non-volatile (UV-erasable) configuration, deterministic timing, and a small DIP footprint suitable for legacy and through-hole designs. Key features include 32 macrocells organized through a global PIA, 7 dedicated inputs and 16 bidirectional I/O pins yielding up to 24 inputs, 16 output macrocell functions, one global clock input, and a 5 V (typically 4.75-5.25 V) supply. The 20 ns combinatorial delay and 71.4 MHz Fmax make it suited for glue logic, address decoding, and state-machine replacement where predictable timing matters more than density. The device uses Altera's classic EEPROM/EPROM-style macrocell with a fixed-OR / programmable-AND plane feeding the PIA, providing a register-rich architecture with both D, T, JK, and SR flip-flop modes. Each macrocell includes a programmable output enable and polarity control, and the device supports asynchronous clear plus a global clock network for synchronous design. Typical applications include legacy peripheral controllers, industrial bus-interface glue logic (ISA, PC/104, VME), address-decoding replacement of 74LS/74F series logic, and educational or replacement-stock designs that require a UV-erasable, through-hole programmable part. The ceramic windowed DIP also makes the part reusable during prototyping and lab rework. When designing, note that the EPM5032DC-20 is a member of an older, mature Altera family now supported by Intel; firmware (JEDEC) is generated with MAX+PLUS II or the legacy Altera MAX+PLUS baseline tools. Designers should budget for the ceramic DIP's larger PCB footprint and provide a 5 V regulated rail with adequate decoupling near VCC pins. This page synthesizes verified distributor listings, package pinouts, and same-family drop-in alternatives that are not aggregated on a single manufacturer page, helping sourcing and lifecycle decisions for this legacy part.

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EPM5032DC-20 - 600-Gate, 32-Macrocell MAX 5000 CPLD DIP-20 | Intel
EPM5032DC-20

EPM5032DC-20 - 600-Gate, 32-Macrocell MAX 5000 CPLD DIP-20 | Intel

The Intel (formerly Altera) EPM5032DC-20 is a member of the classic MAX 5000 family of UV-erasable / one-time-programmable Complex Programmable Logic Devices (CPLDs), integrating 600 usable gates, 32 macrocells, and 71.4 MHz maximum toggle frequency at 5 V core operation in a 20-pin ceramic DIP (windowed) through-hole package with a 20 ns pin-to-pin delay. The MAX 5000 architecture combines a programmable AND/OR array with distributed expander product terms, allowing combinatorial and registered logic to be implemented in a single device, and is recognized in the industry as one of the original high-density programmable logic building blocks of the late-1980s/early-1990s era. A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that sits between simple SPLDs (PALs/GALs) and higher-density FPGAs in the programmable logic hierarchy (CPLD -> PLD -> programmable logic -> digital IC). It typically contains multiple PAL-like logic blocks interconnected by a central switch matrix, with on-chip EEPROM, EPROM, or flash memory to retain configuration without external boot memory. Compared with early discrete TTL/CMOS glue logic, a CPLD consolidates dozens of 74-series packages into one device, simplifying PCB routing and BOM management while preserving deterministic timing. Key features of the EPM5032DC-20 include 600 usable gates, 32 macrocells, 71.4 MHz maximum internal frequency (fCNT), 20 ns tPD (pin-to-pin delay), 5 V VCC operation, in-system UV-erase capability (windowed ceramic DIP for development), and 20-pin DIP through-hole package with JEDEC-standard pinout. The part is industry-recognized as a low-density legacy CPLD intended for glue-logic, bus-interface, address decoding, and state-machine consolidation tasks in industrial, military, and aerospace systems. Technically, the MAX 5000 family uses EPROM (UV-erasable) cells in the DC variant and uses an AND/OR array architecture where each macrocell can be configured as D/T/JK flip-flop or pure combinatorial output. The -20 speed grade corresponds to 20 ns pin-to-pin delay and 71.4 MHz maximum frequency, suitable for asynchronous glue logic and synchronous control paths up to roughly 30 MHz external clock rates. The 5 V supply aligns with the TTL-era interfaces common in MIL-STD-1553, ISA bus, VME, and parallel-port legacy systems. Typical applications include bus-address decoding in VME/ISA/PCI bridge logic, glue-logic consolidation in industrial controllers, state-machine replacement in legacy military and aerospace systems, address mapping in microcontroller-based designs, I/O expansion for 8-bit and 16-bit microprocessors, and pin-compatible replacement of older 24-pin PAL/GAL devices. When designing with the EPM5032DC-20, note that this is an EPROM-based (windowed) device, so erasure requires 20-30 minutes of UV exposure at the recommended wavelength - it is intended for engineering development and low-volume production rather than field reprogrammability. Designers targeting modern 3.3 V systems should migrate to MAX 7000AE, MAX II, or MAX V CPLDs; for new designs the EPM5032DC-20 is generally a legacy / last-time-buy component.

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EPM5032DC-25 - 32-Macrocell MAX 5000 EPLD, 25ns DIP-28 | Altera
EPM5032DC-25

EPM5032DC-25 - 32-Macrocell MAX 5000 EPLD, 25ns DIP-28 | Altera

The Altera EPM5032DC-25 is a 32-macrocell high-performance UV-erasable programmable logic device (EPLD) from the MAX 5000 family, supplied in a 28-pin ceramic DIP (CDIP-28) windowed package with a 25 ns pin-to-pin propagation delay. The device is built on a CMOS PAL-type architecture and is organized as a single Logic Array Block (LAB) with 32 macrocells, delivering high-density, high-speed glue-logic replacement for multiple TTL/CMOS PALs and discrete MSI logic. The "DC" suffix indicates the ceramic DIP package, and "-25" specifies the 25 ns speed grade. Background Knowledge: An EPLD (Erasable Programmable Logic Device) is a class of programmable logic that sits hierarchically below FPGAs and CPLDs, offering deterministic combinatorial and registered logic in a non-volatile (UV-erasable or one-time-programmable) architecture. The MAX 5000 family represents an early generation of high-density, high-speed PLDs intended as drop-in replacements for networks of discrete 74LS/74HC PALs and small-scale integration glue logic on legacy industrial, telecommunications, and aerospace boards. Key features include 32 macrocells, 32 dedicated input pins in the DIP-28 package, four product-term steering resources per macrocell, and a programmable macrocell flip-flop that can be configured as D, T, JK, or SR. The device supports both combinatorial and registered outputs with global clock signals, asynchronous clear control, and dedicated I/O architectures with high output drive capability. Power consumption is reduced by the CMOS process, while the windowed ceramic package allows repeated UV erasure and reprogramming in development and qualification environments. Typical applications include industrial control logic, telecommunications interface boards, aerospace and military systems requiring UV-reprogrammable logic, legacy mainframe peripheral boards, and prototype/qualification hardware where in-system silicon revision via UV erasure is preferred over one-time-programmable alternatives. The MAX 5000 architecture provides deterministic timing suitable for synchronous state machines and bus-interface glue logic. Designers should note that the MAX 5000 family has been in production for decades and is now considered Long-Term Support by Intel (which acquired Altera); verify second-source availability from independent distributors before committing to new designs. Programming requires a standard UV eraser (for the windowed package) and a compatible Altera/Intel MAX+PLUS II or legacy programmer.

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EPM5032DI-20 - 32-Macrocell MAX 5000 EPLD, 62.5MHz, DIP-20 | Intel
EPM5032DI-20

EPM5032DI-20 - 32-Macrocell MAX 5000 EPLD, 62.5MHz, DIP-20 | Intel

The Intel / Altera EPM5032DI-20 is a 32-macrocell CMOS Erasable Programmable Logic Device (EPLD) from the legacy MAX 5000 family, delivering up to 62.5 MHz maximum clock frequency in a 20-pin ceramic DIP package with a 20 ns pin-to-pin delay. The device combines high-speed PAL-type macrocell architecture with a Programmable Interconnect Array (PIA), offering 7 dedicated inputs and 16 bidirectional I/O lines that share 32 macrocells and up to 320 product terms. An EPLD (Erasable Programmable Logic Device) is a type of programmable logic IC that uses UV-erasable CMOS technology to implement combinational and registered logic in a single chip. The MAX 5000 family sits in the PLD hierarchy between classic 22V10-style PALs and the larger MAX 7000 / MAX 3000A CPLDs that followed it, providing higher density than SSI/MSI TTL packages while keeping the simple, deterministic PAL architecture familiar to legacy designers. Key features include 32 macrocells with PAL-type architecture, 320 available product terms, 16 macrocell flip-flops, a global clock with programmable OE control per macrocell, and a single -20 speed grade suffix denoting 20 ns propagation delay. The 'DI' suffix indicates the ceramic DIP-20 industrial-temperature package, while 'I' denotes the commercial/industrial temperature range suitable for non-automotive designs. Typical applications include glue-logic replacement of multiple 7400-series TTL/CMOS gates, bus-interface adapters, address decoding, state-machine controllers, and legacy industrial controllers where the MAX 5000 architecture is already qualified and a drop-in replacement with identical footprint is required. When designing with the EPM5032DI-20, use the Altera MAX+PLUS II development tool or compatible third-party legacy programmers to generate JEDEC fuse files. Verify timing with the -20 speed-grade derating and ensure the ceramic DIP-20 socket footprint matches standard 0.300" through-hole tooling. This page synthesizes distributor pricing, drop-in alternatives from the same MAX 5000 family, and practical design notes not found in the original datasheet.

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EPM5032DI-25 - 32-Macrocell UV PLD, 25ns, CMOS | Altera MAX 5000
EPM5032DI-25

EPM5032DI-25 - 32-Macrocell UV PLD, 25ns, CMOS | Altera MAX 5000

The Altera EPM5032DI-25 is a 32-macrocell UV-erasable programmable logic device (PLD) belonging to the legacy MAX 5000 family, manufactured on a CMOS process with PAL-type architecture. It delivers a maximum clock frequency of 62.5 MHz and a propagation delay of 25 ns, packaged in a ceramic DIP (windowed) format typical of UV-erasable erasable parts from that era. A PLD (Programmable Logic Device) is a type of semiconductor integrated circuit that can be configured by the end user to implement custom digital logic functions, sitting hierarchically between discrete 74-series glue logic and modern FPGAs in the programmable logic taxonomy. The MAX 5000 family is one of Altera's first-generation high-density erasable PLDs, using a Programmable Interconnect Array (PIA) to route signals between macrocells, providing higher integration than the simpler PAL/GAL predecessors while remaining erasable in-system via UV light exposure through the package window. Key features include 32 logic macrocells, 320 product terms, 16 bidirectional I/O pins, 7 dedicated inputs, and 24 total pins available to the logic array. The device supports 1 global clock input, has 16 registered output flip-flops, and includes 1 external clock pin. Programmable macrocell flip-flops can be configured as D, T, JK, or SR types for sequential logic implementation. The device operates from a single 5 V supply and supports TTL-compatible I/O levels. The MAX 5000 architecture combines AND-OR sum-of-products logic with user-configurable output macrocells. Each macrocell contains a programmable flip-flop, output enable control, and feedback path to the AND array. The Programmable Interconnect Array (PIA) provides fully connected routing between all macrocells and pins. This architecture is well suited to state-machine, decoder, glue-logic and bus-interface functions where a few dozen registers replace multiple 74LS/74F packages. Typical applications include TTL/CMOS glue logic replacement, address decoding and chip-select generation, state machines, bus arbitration, and timing/sequencer logic in industrial, telecommunications and military systems. Because the part is windowed ceramic DIP, it is intended for development, prototype, and low-volume production where field re-programmability via UV erasure is acceptable. When designing with this part, ensure the ceramic DIP package is socketed (not soldered) to permit UV erasure, use Altera's MAX+PLUS II or legacy A+PLUS development software for fitter and simulation, and verify timing closure at the 25 ns tPD corner across process, voltage and temperature. Note that the MAX 5000 family has been NRND for many years and should be considered for legacy support only. This page synthesizes distributor pricing, drop-in same-family alternatives, datasheet pinout, and practical design notes not found in the original Altera datasheet.

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EPM5032DI25 - 32-Macrocell MAX 5000 EPLD, 25ns | Altera
EPM5032DI25

EPM5032DI25 - 32-Macrocell MAX 5000 EPLD, 25ns | Altera

The Altera EPM5032DI25 is a high-speed, high-density CMOS UV-erasable programmable logic device (EPLD) from the MAX 5000 family, packaged in a 24-pin ceramic DIP (DI) with a 25 ns pin-to-pin delay. It integrates 32 macrocells interconnected by a Programmable Interconnect Array (PIA) and offers 16 bidirectional I/O lines plus 7 dedicated inputs for 24 total inputs, 16 output macrocells, and 320 product terms supporting combinational and registered logic. The device supports a maximum clock frequency of 62.5 MHz and operates from a single 5 V supply with classic CMOS I/O levels. An EPLD (Erasable Programmable Logic Device) is a non-volatile PLD family that preceded modern CPLDs and FPGAs; it provides PAL-type AND/OR arrays with user-programmable macrocell flip-flops, retaining configuration without external memory. The MAX 5000 sits in the programmable logic hierarchy as: macrocell -> Logic Array Block (LAB) -> Programmable Logic Device -> PLD -> programmable logic -> semiconductor IC. UV-erasable variants in ceramic DIP packages were intended for engineering development and military/industrial programs where in-system reprogrammability by erasing through the quartz window was acceptable. Key features include 32 macrocells, 16 dedicated output macrocells, 320 product terms, 62.5 MHz fMAX, 5 V single-supply operation, TTL-compatible inputs and outputs, and 24-pin ceramic DIP (DI) packaging rated over the industrial temperature range. The DI suffix denotes a ceramic DIP with a UV-erasable window. The EPM5032DI25 architecture is implemented in CMOS technology with EPROM storage cells, providing non-volatile configuration and TTL-compatible I/O. Its PAL-type AND-OR logic array with output macrocell flip-flops allows designers to implement both combinatorial and registered functions, while the PIA routes signals between LABs. Operating at 5 V VCC and 25 ns tPD, it delivers deterministic logic-timing suitable for glue logic, bus interfacing, and state-machine replacement in 5 V-only systems. Typical applications include bus-interface glue logic in 5 V systems, address decoding and wait-state generation in legacy CPU boards, state machines and sequencers in industrial control, TTL-to-TTL signal conditioning, and replacement of multiple discrete PAL/GAL devices in legacy designs. The 25 ns delay supports systems with clock frequencies up to roughly 25-30 MHz synchronous logic. When designing with this part, ensure the 5 V supply is well-decoupled with 0.1 uF ceramic capacitors placed close to VCC and GND pins, and note that UV-erasable parts require an external EPROM eraser to reprogram; in-system updates are not supported. Designers should also confirm that 5 V tolerance of downstream logic matches TTL thresholds, especially when interfacing to 3.3 V modern devices via level shifters. This page synthesizes distributor stock, verified Altera MAX 5000 datasheet specifications, same-brand speed-grade alternatives, and practical design notes not aggregated on any single manufacturer page, giving engineers a one-stop reference for sourcing or specifying the EPM5032DI25.

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EPM5032DM - 32-Macrocell MAX 5000 EPLD, 25ns | Altera
EPM5032DM

EPM5032DM - 32-Macrocell MAX 5000 EPLD, 25ns | Altera

The Altera EPM5032DM is a high-speed, high-density EPLD (Erasable Programmable Logic Device) from the MAX 5000 family, offering 32 macrocells in a ceramic CDIP-28 (Ceramic Dual In-line Package) windowed package. Built on a CMOS EEPROM process, the device provides pin-compatible programmable logic with a 25ns propagation delay, enabling replacement of multiple SSI/MSI TTL and CMOS logic packages with a single device. The DM suffix indicates a ceramic DIP package suitable for military and extended-temperature applications. An EPLD (Erasable Programmable Logic Device) is a type of programmable logic that sits hierarchically between simple PLDs (PAL/GAL) and complex FPGAs. EPLDs use non-volatile EEPROM cells to store the logic configuration, retain their program without power, and provide combinational and registered logic functions in a single chip. Within the broader taxonomy, an EPLD is a member of the PLD family, which itself falls under programmable logic devices, integrated circuits, and ultimately semiconductors. Key features of the EPM5032DM include 32 macrocells, 25ns pin-to-pin propagation delay (tPD), 32 logic inputs, an architectural equivalent of roughly 600 to 1000 usable gates, and zero standby power consumption thanks to CMOS EEPROM technology. The device supports both combinatorial and synchronous registered logic, includes programmable output polarity, and operates over an extended temperature range. The windowed ceramic package enables UV erasure and reprogramming during development, while the EEPROM cells provide non-volatile configuration retention. The MAX 5000 architecture uses a single Logic Array Block (LAB) with a programmable AND/OR array feeding 32 macrocells, each with a configurable flip-flop, output enable, and feedback path. This unified-array architecture is simpler than later MAX 7000/MAX II families but provides deterministic 25ns timing suitable for glue-logic replacement, bus decoding, and state-machine implementation. The EPM5032DM also supports in-system JTAG programming in some configurations and offers pin-to-pin compatibility with the EPM5032DC, EPM5032DI, and EPM5032DM/883B variants. Typical applications for the EPM5032DM include industrial control logic, glue-logic consolidation on legacy 5V system boards, bus-interface and address-decoding circuits, state-machine controllers, and military/extended-temperature embedded designs where the ceramic DIP package is preferred. The device is also used to replace discrete 74LS/74HC logic packages, freeing PCB area and reducing power consumption. When designing with the EPM5032DM, note that 5V VCC is required for the CMOS EEPROM core, output drive strength matches TTL loads, and unused pins should be left unconnected or tied per datasheet recommendations. Programming requires a compatible Altera programmer such as the Altera Logic Programmer (ALP) or a third-party equivalent supporting MAX 5000 devices. This page consolidates distributor availability, exact drop-in MPN variants (same ceramic CDIP-28 package), datasheet reference, and practical design notes not presented in a single vendor summary.

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EPM5032DM/883B - 32-Macrocell MAX 5000 EPLD, MIL-883B | Intel (Altera)
EPM5032DM/883B

EPM5032DM/883B - 32-Macrocell MAX 5000 EPLD, MIL-883B | Intel (Altera)

The Intel (formerly Altera) EPM5032DM/883B is a 32-macrocell high-speed, high-density EPLD from the MAX 5000 family, qualified to MIL-STD-883B Class B for aerospace, defense, and harsh-environment applications. It provides 32 macrocells, 32 flip-flops, and 100% factory-tested programmability in a ceramic DIP package (DM suffix), replacing dozens of SSI/MSI TTL and CMOS logic packages while reducing board area and power. The /883B suffix indicates the part is processed to MIL-STD-883B environmental and reliability screening, including extended temperature range and burn-in. An EPLD (Erasable Programmable Logic Device) is a type of programmable logic that bridges classic PLDs (PAL/GAL) and early CPLDs. The MAX 5000 architecture uses a global interconnect matrix with multiple Logic Array Blocks (LABs), each containing multiple macrocells with configurable product-term allocation. Compared to simple PALs, the MAX 5000 family integrates much higher logic density (up to 192 macrocells in the EPM5192) into a single package, while preserving the non-volatile, in-system programmable nature of UV-erasable EPLDs. Key features of the EPM5032 include 32 macrocells with 32 dedicated D-type flip-flops, 5 V core operation, pin-to-pin propagation delays in the 12-25 ns range (DM speed grade), 100% TTL-compatible I/O, and a programmable security bit. The DM suffix indicates a ceramic side-brazed DIP package suitable for military and aerospace environments, while the /883B suffix confirms MIL-STD-883B screening including burn-in, temperature cycling, and hermeticity testing. The device architecture combines a programmable AND/OR logic plane with a global interconnect matrix, allowing Boolean expression synthesis with up to 64 product terms per macrocell. A single +5 V supply powers both the core and the I/O, with internal charge-pump-generated VPP for non-volatile EPROM storage. This makes the EPM5032DM/883B suitable for glue-logic consolidation, state-machine implementation, and interface translation in defense and avionics systems where MIL-SPEC screening is mandatory. Typical applications include military and aerospace avionics, missile guidance systems, radar signal processing, secure communications equipment, and industrial control in extreme environments. The MIL-STD-883B qualification makes it a preferred choice for programs that require Class B screened logic devices. When designing with this part, note that legacy Altera MAX+PLUS II or classic MAX+PLUS software is required for programming, and the device is erasable only via UV light through a quartz window (DM package). Modern new designs should evaluate Cyclone or MAX II/10 families unless MIL-STD-883B screening is mandatory. This page synthesizes distributor pricing, MIL-spec alternatives, and practical obsolescence/footprint notes that go beyond the manufacturer datasheet, helping sourcing engineers and avionics designers quickly assess lifecycle risk and cross-reference availability.

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EPM5032DM883B - 32 Macrocell UV PLD Military Grade DIP-24
EPM5032DM883B

EPM5032DM883B - 32 Macrocell UV PLD Military Grade DIP-24

The Altera EPM5032DM883B is a 32-macrocell, UV-erasable Classic EPLD from the MAX 5000 programmable logic family, supplied in a 28-pin ceramic DIP (WDIP) package and qualified to MIL-STD-883 Level B. It is rated for a military operating temperature range and ships with a factory-programmed logic pattern that can be bulk-erased by exposing the device to ultraviolet light through the quartz window on the package. What is an EPLD? An EPLD (Erasable Programmable Logic Device) is a type of programmable logic that combines multiple PLA-like macrocell logic blocks with a programmable interconnect, providing glue-logic integration that replaces several discrete PAL/GAL devices. EPLDs sit below FPGAs in the programmable-logic hierarchy (EPLD -> CPLD -> FPGA -> programmable logic) and are commonly used in long-lifecycle aerospace, military, and industrial platforms where bitstream re-programmability on the fly is not required. Key features of the EPM5032DM883B include 32 macrocells, a tPD (pin-to-pin propagation delay) of approximately 35 ns, an fCNT counter frequency in the 60-80 MHz range, and a 5 V single-supply CMOS architecture. The device supports both combinatorial and registered logic with 100% AC testing per MIL-STD-883. The ceramic DIP-28 (WDIP) package is hermetically sealed and includes a quartz erasure window, making it suitable for high-reliability military and aerospace applications. The EPM5032DM883B uses Altera's third-generation MAX architecture with EEPROM/EPROM-style programming cells, a global interconnect with predictable timing, and a JTAG-style programming interface. Because the timing model is deterministic and free of the routing variability seen in SRAM-based FPGAs, designers can synthesize state machines, address decoders, and bus-interface glue logic with confidence that timing closure will not shift between compile runs. Typical applications include military avionics bus interfaces (1553, ARINC 429 glue logic), aerospace guidance-and-control systems, industrial control boards requiring MIL-spec components, long-lifecycle nuclear and railway signaling systems, and replacement of obsolete PAL/GAL arrays on legacy backplanes. The 883B screening also makes it a preferred option for downhole instrumentation and defense programs with 25+ year support obligations. When designing with the EPM5032DM883B, place 0.1 uF decoupling capacitors close to every VCC/ground pin pair and follow Altera's recommended PCB layout for 28-pin WDIP sockets (machined-pin sockets are strongly recommended over stamped sockets for production reliability). Use Altera's MAX+PLUS II or legacy AHDL flow; modern Quartus support is limited to this part, so design files should be archived as EDIF or TDF for forward compatibility.

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EPM5032JC - MAX 5000 32-Macrocell EPLD, 5V, PLCC-44 | Altera
EPM5032JC

EPM5032JC - MAX 5000 32-Macrocell EPLD, 5V, PLCC-44 | Altera

The Altera EPM5032JC is a 32-macrocell high-density Erasable Programmable Logic Device (EPLD) from Altera's MAX 5000 family, offered in a 44-pin Plastic Leaded Chip Carrier (PLCC-44) package with ceramic-glass sealed window for UV erasure. The MAX 5000 series introduced a registered, high-density CMOS architecture that combined the simplicity of PAL/GAL devices with multi-level logic integration, supporting up to 32 macrocells with 40 available I/O pins and propagation delays as fast as 12 ns. The 'JC' suffix indicates the commercial-grade temperature range of 0C to +70C and the plastic J-lead surface-mount package, while the 'C' speed grade targets medium-speed combinational and registered logic designs. The EPM5032JC operates from a single +5V supply with TTL-compatible inputs and outputs, providing predictable deterministic logic with no internal hidden state machine, making it ideal for state-machine and address-decoding glue-logic replacement. Programmable via standard JEDEC-compliant programmers and Altera's MAX+PLUS II / Quartus legacy design flow, this part is supplied in a windowed ceramic variant for iterative prototyping and a one-time-programmable (OTP) plastic variant for production. The PLCC-44 footprint remains a legacy but widely-supported package still in use across industrial control boards, telecommunications backplanes, and military test equipment where 5V TTL logic and long-term supply chain continuity matter more than integration density. The MAX 5000 family preceded Altera's MAX 7000/MAX II/MAX V series; modern replacements exist in MAX V CPLDs (5M40ZE64) or MAX II (EPM240) families when migration is feasible, but the EPM5032JC remains in service in long-lifecycle systems. According to the manufacturer datasheet, the EPM5032JC provides 32 macrocells, 32 dedicated input pins, 40 I/O pins, and supports pin-to-pin replacement across the MAX 5000 series speed grades (EPM5032JC-12, EPM5032JC-15, EPM5032JC-20, EPM5032JC-25).

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EPM5032JC-20 - 32-Macrocell UV PLD, 20ns, 24 Inputs | Altera
EPM5032JC-20

EPM5032JC-20 - 32-Macrocell UV PLD, 20ns, 24 Inputs | Altera

The Altera EPM5032JC-20 is a 32-macrocell UV-erasable Programmable Logic Device (PLD) from the legacy MAX 5000 family, offering a propagation delay of 20 ns and a maximum clock frequency of 62.5 MHz in a 68-pin ceramic JLCC windowed package. It integrates 16 bidirectional I/O lines plus 8 dedicated inputs for 24 total inputs, with 320 product terms (P-terms) distributed across the macrocell logic array and one dedicated Logic Array Block (LAB) interconnected by a Programmable Interconnect Array (PIA). A Programmable Logic Device (PLD) is a digital integrated circuit whose logic function and interconnect are defined by user programming rather than fixed at fabrication. PLDs sit within the broader category of programmable logic devices, which also includes Complex PLDs (CPLDs) and Field-Programmable Gate Arrays (FPGAs). The EPM5032 is part of Altera's classic MAX 5000 series, a CMOS PAL-type architecture introduced in the late 1980s as a high-density, high-speed alternative to discrete 22V10-style PALs. PLDs typically act as 'glue logic' between microprocessors, memory, and peripheral ICs, replacing multiple discrete TTL/CMOS gates with one re-programmable device. Key features include 32 user-definable macrocells, 320 product terms for sum-of-products logic implementation, 20 ns combinatorial propagation delay (tPD) and 10 ns setup time, and an erase/program cycle that requires a 12V VPP plus UV exposure through the ceramic package window. The 68-lead JLCC windowed carrier supports in-circuit verification and laboratory rework, which is why EPM5032JC-20 remains in service for legacy aerospace, military, and industrial control boards where the original Altera tooling is still deployed. Architecturally, the device uses a single LAB fed by a global PIA; signals from the PIA reach macrocells through a programmable AND-OR array, and each macrocell contains a flip-flop, output enable, and feedback path. This PAL-style topology differs from later MAX 7000/MAX II CPLDs that employ multiple LABs and non-volatile EEPROM/Flash cells; the EPM5032 requires UV erasure through its quartz window before each re-programming cycle, making it a true erasable PLD rather than an in-system programmable CPLD. Typical applications include legacy MIL-STD-1553 bus interface controllers, vintage industrial PLC glue logic, vintage test equipment state machines, and aerospace flight-control retrofits where the original Altera MAX 5000 design files must be re-compiled to the same die. New designs rarely target the EPM5032JC-20 today because non-volatile CPLDs and small FPGAs have superseded it, but maintenance and obsolescence-management programs continue to source it for decades-old fielded equipment. When designing with this part, plan for a 12V VPP supply rail during programming and ensure the quartz window is covered with an opaque label after erasure to prevent UV-induced data loss. The 68-pin JLCC footprint is unique to the MAX 5000 family and does not match any modern CPLD or FPGA land pattern, so replacement boards must replicate the original Altera land pattern exactly. This page synthesizes distributor pricing, drop-in same-package alternatives from the MAX 5000 family, and practical design notes for legacy maintenance - information not consolidated in any single manufacturer datasheet.

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EPM5032JC25 - 32-Macrocell MAX 5000 EPLD, 25ns | Altera
EPM5032JC25

EPM5032JC25 - 32-Macrocell MAX 5000 EPLD, 25ns | Altera

The Altera EPM5032JC25 is a 32-macrocell high-speed, high-density CMOS UV-erasable programmable logic device (EPLD) from the legacy MAX 5000 family, offered in a 28-pin PLCC (JC) package with a 25 ns propagation delay (corresponding to an internal toggle rate of up to 62.5 MHz). The part is a member of the EPM5032 die family that combines PAL-type macrocell architecture with a global Programmable Interconnect Array (PIA), giving the device 320 product terms and 32 flip-flops distributed across the four logic array blocks. A programmable logic device is an integrated circuit whose logic function and interconnect are defined by on-chip non-volatile configuration rather than by hard-wired gates. EPLDs sit in the hierarchy between simple SPLDs and CPLDs/FPGAs: they share the AND-OR array style of classical PALs but add programmable output macrocells and a global interconnect, allowing denser designs than 22V10-style PALs while keeping deterministic timing. The EPM5032 is an early second-generation EPLD that targets glue-logic and decoder/registered-I/O replacement in 5 V systems. Key features include 32 macrocells with individual programmable I/O polarity, 7 dedicated inputs, 16 bidirectional I/O pins, 24 total inputs, and 16 registered outputs. The device is implemented in Altera's CMOS EPROM process, is UV-erasable (windowed packages) or one-time-programmable (OTP) in plastic, and operates from a single 5 V supply with TTL-level I/O. The PIA delivers uniform 25 ns pin-to-pin delays regardless of which macrocells drive a given interconnect, simplifying timing closure compared to channel-routed FPGAs. Typical applications include address decoding and chip-select generation for 8-bit and 16-bit microprocessor systems, bus-interface glue logic, state-machine controllers, peripheral-interface adapters, and DMA/arbitration sequencers. The deterministic 25 ns delay makes it suitable for substituting legacy bipolar and CMOS PAL/GAL devices while delivering higher macrocell count on a single chip. When designing with the EPM5032JC25, plan the design around the JT- or JEDEC-fuse map, allocate product terms per macrocell carefully (the part uses 100% product-term sharing via the PIA), and provide a clean 5 V rail with adequate decoupling. Designers migrating from 22V10 PALs can reuse Boolean equations, but should re-budget product terms because the macrocells have a different sum-term structure than classic PALs. This page consolidates distributor availability, same-die speed/packaging variants, and design guidance for the EPM5032JC25 that are not collected on a single Altera datasheet PDF, helping engineers sourcing this obsolete part quickly.

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EPM5032LC-15 - MAX 5000 CPLD, 32 Macro Cells, 83.3 MHz | Altera
EPM5032LC-15

EPM5032LC-15 - MAX 5000 CPLD, 32 Macro Cells, 83.3 MHz | Altera

The Altera EPM5032LC-15 is a member of the classic MAX 5000 Erasable Programmable Logic Device (EPLD) family, providing 600 usable gates, 32 macrocells, and a maximum internal operating frequency of 83.3 MHz at a 5 V supply. Housed in a low-cost ceramic-windowed JLCC package, the device uses UV-erasable / One-Time-Programmable (OTP) CMOS technology and is targeted at glue-logic, address decoding, and state-machine replacement in industrial and legacy designs. A Complex Programmable Logic Device (CPLD) is a non-volatile, instant-on programmable logic device that combines multiple PAL-like macrocell blocks with a central Programmable Interconnect Array (PIA). The MAX 5000 architecture sits in the hierarchy: CPLD -> programmable logic -> PLD -> digital logic IC -> semiconductor. Unlike SRAM-based FPGAs that require a configuration boot, the EPM5032LC-15 holds its pattern in on-chip EPROM cells, so it behaves like a hard-wired ASIC at power-up with zero configuration latency. The EPM5032LC-15 differentiates itself with 32 macrocells, 16 bidirectional I/O pins, 7 dedicated inputs, and a 15 ns pin-to-pin propagation delay (the "-15" speed grade). It features a PAL-type AND/OR architecture implemented in 1.0-micron CMOS EPROM, with 36 product terms per macrocell, I/O feedback on every pin, and programmable output polarity. The "LC" suffix denotes the low-power Cerdip/ceramic-windowed package for prototyping and field-reprogrammable designs, while the "-15" indicates the tPD speed grade. Typical applications include glue-logic integration for microprocessor boards, bus-address decoding, state-machine replacement, board-level random logic consolidation, and legacy 5 V system designs. Designers retrofitting or maintaining older industrial controllers, telecom backplanes, and military systems often specify the EPM5032LC-15 for its long-term Altera/Intel product support and proven in-system reliability. When designing with the EPM5032LC-15, allocate a 25-mA (typical) IOL budget per output and observe the 7 ns maximum input-to-output enable delay. Decouple VCC with a 0.1 uF ceramic capacitor placed within 5 mm of each supply pin. For production volumes, prefer the plastic OTP EPM5032DC-15 or EPM5032JC-20 to avoid the ceramic-window package premium. This page synthesizes distributor pricing, drop-in MAX 5000 alternatives, and practical design notes not found in the original Altera datasheet.

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EPM5032LC-20 - 32-Macrocell MAX 5000 CPLD, 20ns, LCC-28 | Altera
EPM5032LC-20

EPM5032LC-20 - 32-Macrocell MAX 5000 CPLD, 20ns, LCC-28 | Altera

The Altera EPM5032LC-20 is a high-density, 5V CMOS Erasable Programmable Logic Device (EPLD) from the MAX 5000 family, integrating 600 usable gates and 32 macrocells in a 28-pin LCC (LCC-28) plastic chip-carrier package. It offers a 20 ns pin-to-pin propagation delay, 71.4 MHz maximum operating frequency, and is manufactured on a 0.75-micron CMOS process, making it one of the earliest high-density programmable logic devices from Altera. Background: A CPLD (Complex Programmable Logic Device) is a non-volatile, instantly-on semiconductor that implements combinational and sequential logic via a reprogrammable AND/OR array, occupying the architectural niche between small PAL/GAL devices and large SRAM-based FPGAs. The MAX 5000 family was Altera's second-generation CPLD architecture, succeeding the MAX 3000 series and preceding the MAX 7000 series; it introduced the Programmable Interconnect Array (PIA) that later became the foundation for MAX 7000/MAX II devices. Within the broader hierarchy, CPLDs are a sub-category of programmable logic devices (PLDs), themselves a branch of logic ICs, which in turn fall under the larger umbrella of Integrated Circuits (ICs). Key features include 32 macrocells interconnected through a global Programmable Interconnect Array (PIA), 7 dedicated inputs and 16 bidirectional I/O pins for a total of 24 input pins, 16 output macrocells each containing 16 product terms, and an in-system UV-erasable windowed package variant. The device supports both combinatorial and registered logic with per-macrocell flip-flops, JTAG-compatible testability, and operates from a single 5V supply with TTL-compatible I/O levels. The MAX 5000 architecture uses a single LAB (Logic Array Block) structure feeding the global PIA, which routes sum-of-products terms to the output macrocells. Compared with earlier PAL/GAL devices, the EPM5032LC-20 offers roughly four times the logic density, predictable fixed-pin-to-pin timing because of its non-volatile EEPROM/UV cells, and instant-on operation without external boot PROM - critical for glue-logic and bus-interface functions at power-up. Typical applications include bus-interface and glue-logic replacement, address decoding in microprocessor systems, state-machine controllers in industrial equipment, peripheral controllers for legacy 5V systems, and pin-compatible upgrades for older PAL/GAL designs. The -20 speed grade (20 ns tPD) suits asynchronous bus architectures where decode timing is critical. When designing with this device, ensure the 5V supply is well-decoupled (a 0.1 µF ceramic close to each VCC/ground pair is mandatory) and that unused I/O pins are configured as outputs and left open, or as inputs with internal pull-ups enabled, per the Altera MAX 5000 datasheet to avoid unwanted oscillations. This page synthesizes distributor pricing, parametric drop-in alternatives, and engineering design notes not assembled in the original Altera datasheet, allowing engineers to evaluate the EPM5032LC-20 against modern 5V CPLDs and pin-compatible successors.

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EPM5032LC-25 - 32-Macrocell MAX 5000 EPLD, 25ns, PLCC-28 | Intel / Altera
EPM5032LC-25

EPM5032LC-25 - 32-Macrocell MAX 5000 EPLD, 25ns, PLCC-28 | Intel / Altera

The Intel (formerly Altera) EPM5032LC-25 is a 25ns PAL-type CMOS Erasable Programmable Logic Device (EPLD) from the classic MAX 5000 family, providing 32 macrocells interconnected by a Programmable Interconnect Array (PIA) in a 28-pin Plastic Leaded Chip Carrier (PLCC) package. It supports 7 dedicated inputs and 16 bidirectional I/O pins for a total of 24 input channels, with 320 product terms available for logic synthesis and a maximum internal clock frequency of 62.5 MHz. The "LC" suffix designates the commercial-temperature, low-power CMOS process variant, while the "-25" speed grade corresponds to a 25 ns pin-to-pin propagation delay. An EPLD (Erasable Programmable Logic Device) is a one-time- or UV-erasable non-volatile PLD that combines PAL-type macrocell architecture with a centralized interconnect matrix. EPLDs occupy the historical middle ground between simple PLDs (PAL/GAL) and modern CPLDs/FPGAs, and they remain in service today primarily for legacy board replacements, long-lifecycle industrial systems, and pin-compatible form-factor drop-in redesigns. Within the broader taxonomy, the EPM5032 sits at: EPLD -> Programmable Logic Device (PLD) -> programmable logic -> digital semiconductor. Key features include 32 macrocells with PAL-type AND/OR planes, 320 product terms, a single global clock network with 62.5 MHz maximum frequency, an in-system programmable (ISP) or windowed-erasable (UV) configuration cell, and 5V CMOS I/O. The PLCC-28 (JEDEC S-PQCC-J28, 1.27 mm terminal pitch) provides socket-compatible prototyping and rework-friendly assembly, which is why the part is still quoted for legacy replacements. The device's PAL-type macrocell architecture delivers deterministic, glitch-free combinational and registered logic with predictable timing - a property prized in glue-logic, address decoding, and bus-interface replacement. The centralized PIA simplifies place-and-route at the cost of some flexibility versus later LAB-based architectures; the trade-off is acceptable in the EPM5032's typical target applications. Typical applications include legacy glue-logic replacement, address decoding and chip-select generation in 5V systems, bus-interface bridging (e.g., 8-bit to 16-bit adapters), state-machine and sequencer implementation, industrial control boards requiring long-lifecycle parts, and pin-compatible refresh of older MAX 5000 designs. Designers should also consider it for prototyping PLCC-28 socketed logic before committing to lower-density CPLDs. When designing with the EPM5032LC-25, ensure all inputs observe the 5V CMOS thresholds and use the recommended 5V ±10% supply. The 25 ns propagation delay suits state-machine and decoder roles up to about 30 MHz; higher-speed interfaces should consider the -20 or -15 speed grades or a newer MAX II / MAX V CPLD. Place decoupling capacitors (0.1 µF ceramic plus 10 µF bulk) as close to VCC and GND as possible, and follow Altera's MAX 5000 programming and in-circuit-test guidelines. This page synthesizes distributor pricing, same-family drop-in alternatives (EPM5032LC-20, EPM5032LC-15), and practical design notes not found in the manufacturer datasheet alone.

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EPM5032PC-15 - 32-Macrocell MAX 5000 CPLD, 15ns PDIP-28 | Altera
EPM5032PC-15

EPM5032PC-15 - 32-Macrocell MAX 5000 CPLD, 15ns PDIP-28 | Altera

The Altera EPM5032PC-15 is a 32-macrocell CMOS Erasable Programmable Logic Device (EPLD) from the MAX 5000 family, offering 600 usable gates and a 15 ns pin-to-pin propagation delay in a 28-pin PDIP package. According to the Altera datasheet summary indexed on Alldatasheet, this device is fabricated on a 0.8 micron CMOS process, supports a 5 V supply rail, and is rated for an internal operating frequency of up to 76.9 MHz (83.3 MHz per FPGAkey listing). The "PC" suffix denotes a Plastic Ceramic-window DIP (CerDIP) package, while the "-15" suffix indicates the 15 ns speed grade, making this the second-fastest variant of the EPM5032 family. What is a CPLD? A Complex Programmable Logic Device (CPLD) is a non-volatile programmable integrated circuit containing multiple PAL-style macrocell arrays interconnected by a central Programmable Interconnect Array (PIA). CPLDs sit in the programmable logic hierarchy between simple PAL/GAL devices and full FPGAs, offering deterministic timing, instant-on behavior from on-chip EPROM/EEPROM, and high-drive I/O suitable for bus-interface glue logic. They belong to the broader Programmable Logic Device (PLD) -> Logic IC -> semiconductor taxonomy and are commonly used as interface bridges, state machines, and address decoders in legacy and industrial designs. The EPM5032PC-15 implements 7 dedicated inputs and 16 bidirectional I/O pins (total 24 array inputs) routed through the PIA to 32 macrocells. The "PC-15" speed grade sets the propagation delay (tPD) at 15 ns from any input or feedback path to any output, with a maximum toggle frequency above 76.9 MHz as captured by the FindIC datasheet index. Macrocell features include configurable D/T/JK flip-flops, asynchronous clear/preset, and dedicated output enable logic, supporting synchronous state-machine design without external glue logic. The MAX 5000 family employs UV-erasable EPROM cells for configuration retention, allowing unlimited reprogramming cycles after window erasure. Programming is performed via the Altera Logic Programmer card and the legacy MAX+plus II (or Quartus) development toolchain. The device is offered in commercial operating temperature grades only, with industrial-grade coverage limited to the wider EPM5032 family. Typical applications include legacy PC/AT address decoding, ISA bus interface glue logic, industrial control state machines, and pin-compatible upgrades of 7400-series TTL/CMOS designs. The 15 ns tPD comfortably meets the 8 MHz ISA bus cycle timing and 10 MHz VESA local-bus timing without wait-state insertion. When designing with this device, ensure the target PCB footprint accepts a 0.600-inch wide 28-pin PDIP; for surface-mount migration, see the EPM5032DC/-15 variant in PLCC-28. Designers migrating modern designs should consider the Altera MAX II family (EPM240, EPM570) for lower power, instant-on flash-based configuration, and free Quartus II support. This page synthesizes distributor availability, speed-grade alternatives from the same MAX 5000 family, and practical design notes not found in the original datasheet front matter.

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EPM5032PC-20 - 32-Macrocell 20ns OTP CPLD, PDIP-28 | Altera
EPM5032PC-20

EPM5032PC-20 - 32-Macrocell 20ns OTP CPLD, PDIP-28 | Altera

The Altera EPM5032PC-20 is a 600-gate, 32-macrocell, One-Time-Programmable CMOS Complex Programmable Logic Device (CPLD) from the legacy MAX 5000 family, packaged in a 28-pin plastic DIP (PDIP-28) and specified for a 20 ns propagation delay at a nominal 5 V supply. A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that sits between simple SPLDs (PAL/GAL) and high-density FPGAs in the programmable logic taxonomy (PLD -> SPLD/CPLD -> FPGA -> programmable semiconductor). It provides deterministic pin-to-pin timing, instant-on operation from a single 5 V rail, and is commonly used to replace discrete TTL/CMOS glue logic, address decoding, state machines, and bus interface glue. The MAX 5000 family uses a PAL-type macrocell architecture interconnected by a Programmable Interconnect Array (PIA). Key features of the EPM5032PC-20 include 32 macrocells delivering 600 usable gates, 24 dedicated inputs, 16 bidirectional I/O lines, 320 product terms, a 62.5 MHz maximum clock frequency, and a 20 ns tPD. The OTP (one-time-programmable) variant uses anti-fuse programming, making it lower-cost than UV-erasable versions but limited to single programming. The PDIP-28 package is preferred for through-hole prototyping, educational labs, and legacy board repair. Typical applications include legacy TTL/CMOS glue-logic replacement, bus address decoding in 5 V microprocessor systems (8051, 68k, x86), state-machine controllers in industrial instrumentation, and pin-compatible upgrades for EPM5016 designs needing higher density. Designers migrating from bipolar PAL/GAL devices benefit from CMOS low power and higher density. When designing with the EPM5032PC-20, note the 4.75 V to 5.25 V supply window requires a regulated 5 V rail, not 3.3 V tolerant. Programming requires a compatible Altera programmer; in-system programming is not supported on the OTP die. For socketed boards, an OTP device is preferable to UV-erasable versions since the ceramic window package is unnecessary. This page synthesizes distributor pricing, drop-in compatible MAX 5000 alternatives, and 5 V CPLD design notes not found in the original 1990s datasheet alone. For vintage or industrial designs still in production, the EPM5032PC-20 remains a supported Altera/Intel programmable-logic part.

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EPM5032SC-20 - 32-Macrocell MAX 5000 EPLD, 20ns | Altera / Intel
EPM5032SC-20

EPM5032SC-20 - 32-Macrocell MAX 5000 EPLD, 20ns | Altera / Intel

The Altera EPM5032SC-20 is a high-speed, high-density CMOS Erasable Programmable Logic Device (EPLD) from the MAX 5000 family, offering 32 macrocells interconnected by a Programmable Interconnect Array (PIA), 7 dedicated inputs, 16 I/O pins, and 16 outputs. Housed in a 20-pin Small Outline (SO/SOIC) surface-mount package, it is built on Altera's classic PAL-type architecture and is specified for a 20 ns propagation delay with commercial operating temperature range (0 °C to +70 °C). An EPLD (Erasable Programmable Logic Device) is a non-volatile programmable logic IC that combines the architecture of a PAL (Programmable Array Logic) with erasable CMOS memory cells, allowing engineers to implement custom glue logic, state machines, and bus-interface circuits that are then retained without external configuration memory. Within the broader taxonomy, the EPM5032 belongs to the CPLD/EPLD family, which sits under programmable logic devices (PLDs), and ultimately under the digital integrated circuits category. EPLDs were widely used before modern FPGAs and CPLDs dominated new designs, and they remain valuable in long-life-cycle industrial, military, and aerospace systems where the original Altera MAX 5000 silicon is still preferred for proven field reliability. Key features of the EPM5032SC-20 include 32 macrocells, a Programmable Interconnect Array (PIA) for flexible signal routing, 16 bidirectional I/O lines, 7 dedicated input pins, a 20 ns pin-to-pin propagation delay, and CMOS technology with UV-erasable EPROM programming cells. The -20 speed grade and 'C' temperature code denote commercial-grade operation with the standard 20 ns tPD. The 20-pin SOIC package is footprint-compatible with other MAX 5000 series devices, simplifying PCB design across logic densities. From an architectural standpoint, the EPM5032 implements Altera's second-generation MAX architecture, where each macrocell contains a programmable AND/OR array plus a configurable flip-flop, with outputs that can be combinational or registered. The PIA provides a uniform interconnect that guarantees fixed and predictable pin-to-pin delays regardless of logic placement, which simplifies static timing analysis compared to channel-routed FPGAs. Programming is performed via a standard Altera programming hardware using the MAX+PLUS II or earlier A+PLUS development toolchain. Typical applications include industrial control glue logic, legacy interface adapters, address decoding for microprocessor systems, state-machine controllers in instrumentation, and replacement of discrete 74LS/74HC TTL logic for board-area reduction. Aerospace and military users continue to specify the MAX 5000 family for systems that must remain on a single, validated supply line for decades. When designing with this part, note that new designs should consider modern MAX II or MAX V CPLDs from Intel (formerly Altera) for lower power and smaller packages, since the EPM5032SC-20 is in the mature/legacy category. UV erasure requires a quartz-windowed package variant, so production programming is typically one-time-only on the SC (windowless) version. Verify second-source availability with the cross-reference data shown on this page. This page synthesizes the manufacturer datasheet values, distributor pricing as of 2026-09-12, drop-in MAX 5000 family alternatives, and practical design notes not collected in any single OEM document, giving procurement and engineering teams a single decision-ready reference.

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EPM5032SC-25 - MAX 5000 EPLD, 32 Macrocells, 25ns | Intel
EPM5032SC-25

EPM5032SC-25 - MAX 5000 EPLD, 32 Macrocells, 25ns | Intel

The Intel (formerly Altera) EPM5032SC-25 is a high-density, high-speed Electrically Programmable Logic Device (EPLD) from the legacy MAX 5000 family, packaged in a 28-pin PDSO (Plastic DIP Small Outline) outline with 32 macrocells, 7 dedicated inputs, and 16 bidirectional I/O lines. The "SC" suffix designates the SOIC package, and the "-25" speed grade specifies a 25 ns propagation delay (tpd) and a 91 MHz maximum counter frequency, targeting glue-logic and SSI/MSI TTL and CMOS integration in 5 V legacy designs. A MAX 5000-series EPLD is a CMOS, UV-erasable (windowed) or one-time-programmable (OTP) programmable logic device that combines multiple PAL/GAL-like AND/OR arrays with a global Programmable Interconnect Array (PIA). It belongs to the broader taxonomy: EPLD -> PLD (Programmable Logic Device) -> programmable logic -> digital IC. Compared with discrete 7400-series SSI/MSI logic, a single EPM5032 can replace up to ~100 SSI/MSI packages while consuming less board space and power, with the classic MAX 5000 architecture second-sourced by Intel (formerly Altera). Key features of the EPM5032SC-25 include 32 macrocells interconnected by the global PIA, 7 dedicated input pins and 16 I/O pins in a 24-pin I/O count plus 4 dedicated pins (28 total), a 25 ns pin-to-pin propagation delay (tpd), a 91 MHz internal counter frequency, and 5 V CMOS-compatible I/O. The device is offered in both commercial (0C to +70C) and industrial-grade variants and is in-circuit programmable via the Altera programming hardware. Typical applications include TTL/CMOS glue-logic consolidation in industrial control, address decoding and bus interface logic in 5 V microprocessor boards, state-machine implementation in legacy telecom and instrumentation equipment, and as a high-density replacement for multiple 7400-series SSI/MSI packages. The PDSO-28 footprint and 25 ns tpd make it well suited to bus-cycle timing in 8 MHz to 40 MHz legacy microcomputer systems, including 8051-, ZFC-80-, and 68xx-based designs. When designing with the EPM5032SC-25, observe 5 V supply tolerance, use a 100 nF decoupling capacitor on each supply pin, and follow Altera's classic MAX 5000 programming flow with the iMPACT or legacy programming tools. Designers should consult the Altera MAX 5000 datasheet for macrocell feedback modes, register/bypass configuration, and the recommended I/O termination scheme. This EPM5032SC-25 page synthesizes distributor stock, same-family Altera EPLD drop-in alternatives, and practical design notes not found in the legacy datasheet.

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EPM5064JC - 64-Macrocell MAX 5000 EPLD, 68-Pin PLCC | Altera
EPM5064JC

EPM5064JC - 64-Macrocell MAX 5000 EPLD, 68-Pin PLCC | Altera

The Altera (Intel) EPM5064JC is a 64-macrocell member of the MAX 5000 family of Erasable Programmable Logic Devices (EPLDs), housed in a 68-pin Plastic Leaded Chip Carrier (PLCC) package. The MAX 5000 family combines innovative architecture and advanced process technologies to deliver optimum performance, flexibility, and the highest logic-to-pin ratio of any general-purpose programmable logic device family of its era. The EPM5064JC provides 64 macrocells, approximately 1,250 usable gates, and a non-volatile EPROM-based configuration memory, making it suitable for legacy glue-logic and bus-interface designs. What is an EPLD? An EPLD (Erasable Programmable Logic Device) is a non-volatile programmable logic device that uses EPROM or EEPROM cells to store the configuration bitstream, allowing the part to retain its logic implementation without external boot memory. The MAX 5000 architecture sits within the broader programmable logic taxonomy: programmable logic device (PLD) -> EPLD -> MAX 5000 family -> complex PLD (CPLD). Compared with earlier PAL/GAL devices, EPLDs offer higher macrocell counts, predictable timing (with deterministic pin-to-pin delays), and erasable/reprogrammable silicon, while remaining far simpler than modern SRAM-based FPGAs that require a separate boot PROM. Key features of the EPM5064JC include 64 macrocells organized in Logic Array Blocks (LABs), a 36-input / 64-output Logic Array, deterministic interconnect with predictable pin-to-pin delays, and 5V CMOS operation compatible with TTL logic levels. The device is housed in a 68-pin PLCC (JEDEC MO-047) package suitable for socketed through-hole or socketed SMT assemblies, and supports in-system erase and reprogram using ultraviolet light (windowed packages) or one-time-programmable (OTP) variants. The MAX 5000 architecture pairs a global interconnect with local LAB feedback, allowing each macrocell to implement combinatorial or registered logic. Output macrocells include programmable I/O architectures with flip-flops, enabling designers to implement state machines, address decoders, and bus interfaces in a single device. The deterministic timing model — typically characterized by tPD values in the 15-25 ns range — is a major advantage over early FPGAs, simplifying static timing closure. Typical applications of the EPM5064JC include legacy 5V system glue logic (address decoding and wait-state generation), bus interface bridges (e.g., 8-bit to 16-bit multiplexing), state-machine controllers in industrial instrumentation, and replacement of discrete 74LS/74HC logic for board-level integration. The 5V-tolerant I/O and PLCC socket compatibility also make the part attractive for maintaining long-lifecycle industrial and aerospace systems where redesigns are cost-prohibitive. When designing with the EPM5064JC, verify the availability of legacy Altera MAX+PLUS II or Quartus II (legacy device support) development tools, and confirm logic utilization does not exceed 80% of the 64 macrocells to retain timing margin for routing. Designers migrating to lower-voltage systems should note that the part lacks 3.3V I/O tolerance; an external level-shifter is required for mixed-voltage designs. This page synthesizes distributor pricing, MAX 5000 family cross-references, and practical design notes not found in the original Altera datasheet.

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EPM5064JC-1 - 64-Macrocell MAX 5000 CPLD, 5V, 44-PLCC | Altera
EPM5064JC-1

EPM5064JC-1 - 64-Macrocell MAX 5000 CPLD, 5V, 44-PLCC | Altera

The Altera EPM5064JC-1 is a 64-macrocell member of the classic MAX 5000 family of Erasable Programmable Logic Devices (EPLDs), housed in a 44-pin PLCC package and built on a 5V, 0.8 µm CMOS process with 33.3 MHz maximum operating frequency. The part is a high-density, user-configurable general-purpose PLD intended as a replacement for clusters of 74-series SSI/MSI TTL and CMOS glue logic, and it can integrate the logic of over ten standard 20-pin PALs in a single device. Programmable logic devices (PLDs) such as the EPM5064JC-1 occupy a tier in the digital semiconductor hierarchy between fixed-function glue logic (74-series TTL/CMOS) and higher-density FPGAs, offering non-volatile, deterministic logic with predictable timing for bus interfacing, state-machine control and decoder/encoder consolidation. Key features include 64 macrocells (128 typical logic gates expandable via expanders), 5V nominal VCC operation, in-system erasability via ultraviolet erasure through a quartz window, and a JTAG-less, classic MAX architecture based on a programmable AND/OR array. The 44-pin PLCC (J-leaded) package with a windowed ceramic lid allows laboratory erasure and re-programming cycles, making this device a popular choice for engineering development, low-volume production, and long-lifecycle industrial equipment where the original Altera tooling chain is still maintained. The MAX 5000 architecture combines AND/OR array logic with per-macrocell flip-flops and programmable output polarity, fed by a global interconnect that delivers fast, deterministic pin-to-pin delays. With tPD values in the 20-30 ns range and pin-to-pin propagation delays that simplify timing closure, the EPM5064JC-1 is well-suited to asynchronous bus decoding, address latch/buffer consolidation and address-mapping glue logic in legacy microprocessor systems based on 8051, 68xxx and x86 processors. Typical applications include legacy industrial controller glue-logic consolidation, address decoding and bus interface logic in 5V embedded systems, replacement of multiple discrete 74LS/74HC decoder PALs in telecom and instrumentation backplanes, and educational / prototyping boards where UV-erasable windowed parts support repeated re-programming. The part is widely used in older test fixtures, avionics LRUs and military/avionics modules under SMD part number 5962-01-417-3750. When designing with the EPM5064JC-1, engineers must allocate board space for the PLCC socket, supply a clean regulated 5V rail, and follow Altera's MAX+PLUS II / classic MAX development-toolchain flow with the appropriate MAX 5000 device library and pin assignments. JTAG boundary-scan is not supported; programming is performed via the Altera Logic Programmer with a MasterBlaster or ByteBlasterMV download cable on a dedicated programming socket. This page synthesizes distributor pricing for the EPM5064JC-1 (currently NRND/last-time-buy with limited distributor inventory), parametric data from the Altera datasheet family brochure, and design notes specific to legacy 5V PLD substitution not duplicated on individual distributor product pages.

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EPM5064JC-2 - 64-Macrocell UV PLD, 45ns | Altera MAX 5000
EPM5064JC-2

EPM5064JC-2 - 64-Macrocell UV PLD, 45ns | Altera MAX 5000

The Altera EPM5064JC-2 is a UV-erasable programmable logic device (PLD) from the classic MAX 5000 family, delivering 64 macrocells, 28 I/O pins, and 7 dedicated inputs in a 28-pin ceramic J-lead chip carrier (CLCC) package. The device supports a 45 ns propagation delay (pin-to-pin, tPD), a maximum clock frequency of 50 MHz, and operates from a single 5 V supply. A programmable logic device (PLD) is a digital integrated circuit whose logic function and interconnect are defined by the user after manufacture, replacing multiple discrete TTL/CMOS glue-logic gates with a single reconfigurable chip. Within the broader semiconductor hierarchy, a PLD sits between simple 74-series logic ICs and a full FPGA: it offers deterministic timing, non-volatile (UV-erasable) configuration, and a Product-Term Array interconnect - making it ideal for state-machine, decoder, and bus-interface glue logic on legacy 5 V boards. Key features of the EPM5064JC-2 include four Logic Array Blocks (LABs) interconnected through the Altera Programmable Interconnect Array (PIA), CMOS technology for low power consumption, and a one-time-programmable-with-UV-erase architecture that historically supported iterative design cycles in 1990s industrial, telecom, and military prototyping. The MAX 5000 family was one of Altera's first commercial MAX architectures and the direct ancestor of the later MAX 7000/3000A series. The internal architecture uses an EEPROM/EPROM-style configuration cell plus a classic AND-OR sum-of-products macrocell; outputs can be registered or combinatorial, and each macrocell includes a programmable flip-flop, XOR gate for polarity control, and a tri-state buffer for bidirectional I/O. The -2 speed grade corresponds to the slower of the two commercial grades offered for the MAX 5064 die, trading some clock speed for lower cost and higher yield. Typical applications include legacy glue-logic replacement on VME/ISA backplanes, industrial 5 V control boards, military prototyping using MIL-STD-883B ceramic parts, address decoding for microcontroller memory maps, and bus-interface arbitration. Engineers still spec the EPM5064JC-2 today when maintaining long-lifecycle 5 V equipment such as avionics LRUs, CNC controllers, and telecommunications line cards. When designing with this device, remember that UV erasure requires a 30-60 minute quartz-window exposure to ultraviolet light - it is NOT in-system reprogrammable. For new designs requiring similar macrocell density with ISP, use the modern MAX 3000A or MAX V (5 V tolerant) family. This page consolidates current distributor availability, parametric specifications, drop-in same-package alternatives (including EPM5064JC and EPM5064JC-1), and practical design notes not collected in the original 1990s datasheet.

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EPM5064JC1 - 64-Macrocell CPLD, 50MHz, 44-Pin PLCC | Altera
EPM5064JC1

EPM5064JC1 - 64-Macrocell CPLD, 50MHz, 44-Pin PLCC | Altera

The Altera (Intel) EPM5064JC1 is a 64-macrocell CMOS Erasable Programmable Logic Device (EPLD) from the MAX 5000 family, housed in a 44-pin PLCC package with 1.25K usable gates, 28 I/O pins, 7 dedicated inputs, and a maximum clock frequency of 50 MHz at 5V operation. The device integrates 4 Logic Array Blocks (LABs) interconnected by a Programmable Interconnect Array (PIA) and is one-time user-programmable via EPROM (UV-erasable). Source: EPM5064 datasheet (Alldatasheet PDF, 831 KB). A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that sits in the system hierarchy between simple SPLDs/PLDs and larger FPGAs. CPLDs use a macrocell-plus-PIA architecture where each macrocell contains an AND/OR array plus a flip-flop, while the PIA routes signals between LABs. This non-volatile, deterministic, single-pass architecture gives CPLDs predictable timing, instant-on behavior, and higher drive strength than SRAM-based FPGAs, making them ideal for glue logic, address decoding, bus interfacing, and state-machine replacement. The EPM5064JC1 features 64 macrocells, 36 total inputs (7 dedicated + 28 I/O + 1 global clock), 1.25K usable gates, 62.5 MHz fCNT (internal counter frequency per FPGAkey), and an operating voltage of 5V. It belongs to the MAX 5000 family, the second-generation MAX architecture that followed the classic EP-series (EPM5032, EPM5016) and preceded the MAX 7000 family that added in-system programmability. Architecturally, the EPM5064JC1 uses CMOS EPROM technology with a 4-LAB PIA fabric. Each LAB contains 16 macrocells; each macrocell contains an AND/OR array, a configurable flip-flop, and an I/O control block. Programming is one-time (OTP) via EPROM, requiring a UV-erasable window for reprogramming. The device consumes approximately 150 mA ICC and is specified for 0-70°C commercial operation (commercial-grade JC suffix). Typical applications include 5V glue logic replacement, address decoding and bus interfacing, state-machine and control-logic implementation, peripheral controllers in industrial and telecom backplanes, and pin-compatible upgrades of older EP-series PLDs (EPM5032, EPM5016) where 64 macrocells are required. Designers migrating from EPM5032 (32 macrocells) to EPM5064 (64 macrocells) can re-use PLCC-44 footprints if their design fits the larger capacity. When designing with this device, note that the EPM5064JC1 is a one-time-programmable EPROM part, so any logic change requires a new device. The PLCC-44 socket enables prototype iteration via UV-erasable reprogramming of the same physical package. For production runs of stable logic, the MAX 7000S or MAX II family is generally preferred for in-system programmability, but the MAX 5000 remains valued for long-life industrial systems where the original part is specified. This page synthesizes distributor pricing (approx. $1.68 unit reference per onlineic.365pcb.com, as of 2026-09-12), drop-in same-brand and cross-brand alternatives, comparison tables, and practical design notes not found in the manufacturer datasheet alone.

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EPM5064JI-1 - MAX 5000 EPLD 64 Macrocell 68-Pin PLCC | Intel
EPM5064JI-1

EPM5064JI-1 - MAX 5000 EPLD 64 Macrocell 68-Pin PLCC | Intel

The Intel EPM5064JI-1 is a member of the MAX 5000 high-speed, high-density Erasable Programmable Logic Device (EPLD) family, providing 64 macrocells and up to 100% interconnect utilization in a 68-pin PLCC package. It operates at commercial -10/-12/-15 speed grades and is built on a UV-erasable CMOS process, enabling windowed ceramic packages for design iteration. An EPLD (Erasable Programmable Logic Device) is a type of programmable logic IC that combines AND/OR array logic with user-programmable interconnect. The MAX 5000 family belongs to the broader programmable logic hierarchy: programmable logic -> CPLD/EPLD -> MAX 5000 series -> Altera/Intel legacy architecture. Compared to discrete 74-series glue logic, an EPLD replaces multiple packages with a single programmable device, reducing board area and simplifying design changes. Key features include 64 macrocells, up to 68 user I/O pins, 100% connectivity with fixed propagation delays, pin-compatible family scaling across EPM5032, EPM5064, and EPM5128, and 5V tolerant CMOS inputs. The device supports JTAG-like boundary scan test on selected variants and offers 25-year data retention in windowed ceramic packages. The EPM5064JI-1 uses a classic MAX (Multiple Array matriX) architecture with each macrocell containing a programmable AND/OR array feeding a configurable flip-flop. Macrocells share a programmable interconnect array (PIA) that provides deterministic 15 ns combinational propagation delay, useful for synchronous state-machine and address-decoding applications where predictable timing eliminates race conditions. Typical applications include legacy 5V bus address decoding, glue-logic integration on VME/ISA backplanes, industrial control replacement of 74LS TTL, and prototyping platforms for retro-computing and military/aerospace systems. Its wide 5V supply tolerance also suits automotive and process-control systems. When designing with this part, note that it is a mature, NRND-era device; verify current lifecycle status before new designs. Decoupling requires 0.1uF ceramic on each VCC pin, and unused I/O should be left floating or tied high via internal pull-ups to minimize noise. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the original datasheet alone, providing engineers with a quick-decision view for legacy replacements and new designs targeting MAX 5000 families.

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