FPGA & CPLD
Produtos (6666)
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).
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
EPM5064LC - 64-Macrocell MAX 5000 CPLD, 55ns, 5V | Altera
The Altera EPM5064LC is a One-Time-Programmable (OTP) Complex Programmable Logic Device (CPLD) from the legacy MAX 5000 family, delivering 64 macrocells and 1.25K usable gates with a 55 ns propagation delay, packaged in a 44-pin Plastic Leaded Chip Carrier (PLCC/LCC-44). It operates from a 4.75 V to 5.25 V single supply and is built on a CMOS EPROM-based process that is erasable with ultraviolet light and then re-programmable (windowed package line). A CPLD (Complex Programmable Logic Device) is a non-volatile, deterministic-logic semiconductor that sits between discrete 74-series glue logic and higher-density FPGAs. It belongs to the taxonomy programmable logic device (PLD) -> CPLD -> MAX family -> MAX 5000 series. CPLDs provide predictable timing through a fixed AND/OR architecture with a Programmable Interconnect Array (PIA), making them ideal for bus decoding, address mapping, state-machine control, and I/O expansion in systems that need instant-on behavior without external boot memory. Key features of the EPM5064LC include 64 macrocells organized into 4 Logic Array Blocks (LABs), 36 total inputs (7 of them dedicated), 28 bidirectional I/O pins, and 4 user I/O pins, all accessible through the J-lead PLCC-44 footprint. It supports TTL-level interfaces, in-system programmability via the Altera MAX+PLUS II / MAX+PLUS II baseline toolchain, and offers 100% generic testability. The device is rated for the commercial 0C to +70C operating range. Architecturally, the EPM5064LC combines four LABs interconnected by a global PIA. Each macrocell contains a programmable AND/OR array, a flip-flop, and a tri-state output buffer, allowing combinatorial or registered logic. The EPROM-based interconnect provides non-volatile configuration with zero standby power for the routing fabric, while the CMOS output stage supports 24 mA drive for LED and bus-driving applications. Typical applications include legacy peripheral glue logic, 5V ISA bus decoding, address decoding in embedded 80x86 and 68K systems, state-machine control in industrial PLCs, and pin-compatible modernization of designs that originally used discrete PAL/GAL devices. The 44-pin PLCC package is also well suited to through-hole sockets for easy field replacement. When designing with the EPM5064LC, ensure the supply rail is well decoupled with 0.1 uF ceramic and 10 uF tantalum capacitors placed within 25 mm of the VCC and GND pins. The device's OTP nature means firmware errors cannot be re-flashed in-circuit - use the windowed ceramic-package variant (EPM5064LC with quartz lid) for prototyping and the plastic OTP variant for production. This page synthesizes distributor pricing, drop-in same-package alternatives drawn from the same Altera MAX 5000 family, and practical design notes not found in the manufacturer datasheet.
EPM5064LC-1 - 64-Macrocell 5V CPLD, 44-Pin PLCC | Altera
The Intel / Altera EPM5064LC-1 is a 64-macrocell CMOS Complex Programmable Logic Device (CPLD) from the classic MAX 5000 family, rated for a 62.5 MHz internal operating frequency and housed in a 44-pin Plastic Leaded Chip Carrier (PLCC) package. It is a 5 V VCC device with an OTP (one-time programmable) / UV-erasable architecture built on an EPROM-based process, offering approximately 1.25K usable gates for glue-logic integration. A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic IC that combines multiple PAL/GAL-style macrocell arrays on a single die, connected by a central Programmable Interconnect Array (PIA). The MAX 5000 family is one of Altera's earliest CPLD generations and sits in the hierarchy: CPLD -> programmable logic -> logic IC -> integrated circuit. CPLDs are used where deterministic pin-to-pin propagation delay, simple HDL synthesis, and instant-on non-volatile configuration are required - typically replacing dozens of 74-series logic chips on a board. Key features of the EPM5064LC-1 include 4 Logic Array Blocks (LABs) interconnected through the PIA, a worst-case propagation delay of approximately 40 ns through the device (tPD1), 36 input lines feeding 7 dedicated inputs that can also serve clock functions, and 28 output lines with macrocell-level register/bypass control. The IC is specified for commercial 5 V operation with a supply range of 4.75 V to 5.25 V, and supports in-system programming via JTAG. The MAX 5000 architecture uses an EEPROM/EPROM cell array for the AND plane and a fixed OR plane feeding each macrocell's flip-flop, giving the part its well-known deterministic timing advantage over SRAM-based FPGAs. Designers use the device with Altera's legacy MAX+PLUS II toolchain (or modern Quartus with legacy device support) to compile AHDL, VHDL, or Verilog designs into the JEDEC fuse map. Typical applications for the EPM5064LC-1 include 5V bus-interface address decoding, legacy ISA/PCI adapter glue logic, custom state-machine controllers, bus-width adapters, and pin-compatible upgrades for older discrete TTL designs. It is also a popular choice for industrial control boards where non-volatile, instant-on logic is essential and the design will not be re-programmed in the field. When designing with the EPM5064LC-1, confirm the supply voltage matches the 4.75-5.25 V range and add a 0.1 uF decoupling capacitor near each VCC pin to handle the simultaneous-switching output current spikes. Note that the -1 speed grade is the slowest bin (12 ns / 40 ns tPD); if your design needs higher throughput, look at the EPM5064LC-2 (faster grade, same die/package) before changing footprint. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
EPM5064LC-2 - 64-Macrocell MAX 5000 CPLD, 45ns, PLCC44 | Altera
The Altera EPM5064LC-2 is a 64-macrocell CMOS Erasable Programmable Logic Device (EPLD) from the legacy MAX 5000 family, supplied in a 44-pin PLCC (J-Lead) package. It provides 64 macrocells, 36 input lines (7 dedicated inputs plus 28 I/O lines), 28 output functions / flip-flops, and a propagation delay of 45 ns with a maximum clock frequency of 40 MHz. A Complex Programmable Logic Device (CPLD) is a non-volatile programmable logic IC that combines multiple PAL-like macrocell arrays on a single die with a programmable interconnect matrix. The MAX 5000 architecture uses CMOS EPROM / UV-erasable cells (OTP variants denoted "LC" use one-time-programmable EPROM) to retain the configuration without a separate boot memory. CPLDs sit in the broader hierarchy of programmable logic: simple PLD (PAL/GAL) -> CPLD -> FPGA, and are preferred over FPGAs when deterministic pin-to-pin timing, instant-on behavior, and a small fixed logic capacity are sufficient. Key features of the EPM5064LC-2 include: 64 macrocells, 36 inputs, 28 I/O pins, 4 logic array blocks (LABs) each containing 16 macrocells, 45 ns combinational propagation delay (tPD), 40 MHz maximum internal frequency, and a programmable AND/OR array with per-macrocell flip-flop (D/T/JK/SR). Programming is performed via a JTAG-compatible or Altera-proprietary byte-wide programmer, and the device is OTP (one-time programmable) in the LC variant. Typical applications include legacy glue-logic replacement, address decoding and bus-interface adaptation, state-machine controllers in industrial control boards, and pin-compatible second-source designs for MAX 5000 sockets. The LC-2 speed grade is one bin slower than LC-1 and is often chosen where timing margin is acceptable and lower-cost / wider-availability parts are preferred. When designing with the EPM5064LC-2, plan for 4.75 V to 5.25 V single-supply operation, add 0.1 uF + 1 uF decoupling near each VCC/ GND pair, and verify timing with Altera MAX+PLUS II timing analysis. Confirm second-source availability before committing to the LC OTP process flow. This page consolidates distributor pricing, drop-in same-package alternatives, and design notes for engineers maintaining MAX 5000 designs — context not present in the original datasheet PDF.
EPM5064LI - 64-Macrocell MAX 5000 CPLD, 5V, PLCC-44 | Altera
The Altera EPM5064LI is a UV-erasable/OTP Complex Programmable Logic Device (CPLD) from the classic MAX 5000 family, delivering 64 macrocells organized across 4 interconnected Logic Array Blocks (LABs). The device is housed in a 44-terminal Plastic J-Leaded Chip Carrier package (PLCC-44, package code QCCJ) and operates from a single 4.5V to 5.5V supply. Maximum clock frequency is rated at 33.3 MHz with a typical propagation delay of 55 ns, and the part provides 28 bidirectional I/O pins plus 7 dedicated inputs for a total of 36 usable inputs. According to the MAX 5000 datasheet, this CMOS device is built on a 1-micron EPIC process with 500-mA typical latch-up immunity at 125C. A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic IC that sits in the hierarchy between simple PAL/GAL devices and high-density FPGAs. CPLDs typically contain multiple macrocells with sum-of-products logic and a centralized interconnect fabric, providing fast, deterministic pin-to-pin propagation delays ideal for glue logic, bus decoding, and state-machine implementation. The MAX 5000 family was among the earliest commercially successful CPLD families, combining EPROM/EEPROM non-volatile configuration with predictable timing — a useful baseline for legacy industrial and telecom designs. Key features of the EPM5064LI include 64 macrocells, 4 LABs, 28 I/O pins, 7 dedicated inputs, 33.3 MHz maximum frequency, 55 ns propagation delay, 4.5V to 5.5V single-supply operation, industrial temperature grading, and J-bend PLCC-44 terminals. The non-volatile UV-erasable (windowed) or one-time-programmable (OTP) configuration memory eliminates the need for an external boot PROM and ensures instant-on behavior on power-up. The MAX architecture provides 100% interconnect within and between LABs. Technically, the EPM5064LI uses Altera's classic MAX architecture in which each macrocell contains a programmable AND/OR array feeding a configurable flip-flop with product-term steering. The 4 LABs share a global interconnect that provides 100% connectivity between any two macrocells, enabling highly flexible logic placement. The I/O structure is symmetrical, with 28 bidirectional pins that can be configured for input, output, or tri-state operation with independent output enable control. Typical applications include legacy industrial control glue logic, address decoding for microprocessor systems, bus interface and protocol bridging, state-machine controllers, and replacement of discrete TTL/CMOS logic in long-life-cycle equipment. The industrial temperature grade makes the part suitable for factory automation and outdoor control cabinets. When designing with this device, engineers should plan for the 55 ns propagation delay when computing critical timing margins and confirm the 5V supply requirement is compatible with surrounding logic. The PLCC-44 socket footprint simplifies prototyping and field replacement, which is important for legacy systems still in production. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
EPM5128GC - 128-Macrocell MAX 5000 CPLD | Altera | 68-Pin PGA
The Altera EPM5128GC is a high-speed, high-density CMOS EPLD from the MAX 5000 family, providing 128 macrocells and approximately 2,500 usable gates in a 68-pin ceramic PGA with windowed (erasable UV) package. It is built on Altera's classic MAX architecture, which uses a programmable AND/OR array with a fixed OR plane, and operates from a single 5V supply at commercial temperature grades. Per the manufacturer datasheet, the EPM5128GC is the standard (non-speed-graded) variant of the family; the -1 suffix denotes a power/performance option, while the GC suffix denotes the ceramic windowed PGA package for prototyping and lab use. What is a CPLD? A Complex Programmable Logic Device (CPLD) is a non-volatile programmable logic IC containing multiple PLD-like macrocell blocks interconnected by a central programmable interconnect matrix. CPLDs sit between small PAL/GAL devices and large FPGAs, offering deterministic pin-to-pin propagation delays, instant-on configuration (no boot flash needed), and high pin-to-gate density for glue-logic, address decoding, bus interface, and state-machine applications. Key features of the EPM5128GC include 128 macrocells organized in multiple Logic Array Blocks (LABs), 68 user I/O pins on the ceramic PGA package, and Altera's programmable I/O architecture supporting TTL and CMOS interface levels. The device supports user-programmable security bits and is in-system UV-erasable, making it well suited to engineering development environments where design iteration is expected. The MAX 5000 architecture uses a CMOS EEPROM-based configuration cell, so the device retains its logic pattern with no external boot PROM. The fixed interconnect provides predictable, consistent timing across operating conditions - a key advantage over SRAM-based FPGAs. With 128 macrocells, the EPM5128GC can implement substantial state machines, multi-channel address decoders, or peripheral bus bridges in a single chip. Typical applications include prototyping and design iteration of glue-logic designs, replacement of multiple discrete PAL/GAL devices, industrial bus-interface bridging (ISA, parallel port, custom), and educational platforms where UV erasure allows multiple programming cycles. The ceramic PGA package also makes the part useful for laboratory test fixtures and reference designs. When designing with the EPM5128GC, engineers should provide a clean 5V rail and respect the I/O pin count of 68, configure the device using MAX+PLUS II or the legacy Altera programming toolchain, and note that ceramic PGA sockets are required to allow UV erasure. For new designs, designers should consider the modern MAX II/MAX V equivalents in surface-mount packages. This page synthesizes distributor availability, parametric alternatives from the same MAX family, and practical design notes not found in the original manufacturer datasheet.
EPM5128GC-1 - 128-Macrocell CPLD, 62.5MHz, 5V MAX 5000 | Altera
The Altera EPM5128GC-1 is a UV-erasable CMOS Complex Programmable Logic Device (CPLD) from the classic MAX 5000 family, integrating 128 macrocells, 2.5K usable gates, and 7 dedicated inputs with up to 52 usable I/O pins in a PGA-96+ ceramic windowed package. It operates from a single 5 V nominal supply (4.75 V to 5.25 V), supports tPD propagation delays as low as 16 ns, and reaches a maximum clock frequency of 62.5 MHz (with the -1 speed grade). A CPLD (Complex Programmable Logic Device) is a non-volatile, instantly-on programmable logic IC that combines multiple PAL-style macrocell blocks with a central programmable interconnect matrix. In the system hierarchy it sits between simple SPLDs/GALs and larger FPGAs, offering predictable timing, deterministic logic implementation, and instant boot without external configuration memory. CPLDs are widely used as glue logic, bus-interface bridges, and state-machine controllers in industrial, telecom, and embedded designs where low power, fast propagation, and rugged pin-for-pin replacement behavior are required. Key features of the EPM5128GC-1 include 128 macrocells with 100% connectivity, 4.75-5.25 V single-supply operation, 100 mA IOL/25 mA IOH drive capability per pin, JTAG-compatible in-system programming on selected packages, and a programmable security bit for logic protection. The device supports both combinatorial and registered logic with per-macrocell flip-flops, and offers low-power CMOS technology with typical standby currents in the milliamp range. The ceramic PGA-96+ package includes an erasable quartz window for prototype or development reuse via UV erasure. Internally the EPM5128GC-1 is organized as multiple Logic Array Blocks (LABs) connected by the Programmable Interconnect Array (PIA). Each macrocell contains an AND/OR array with expander-product support, a programmable flip-flop, and an I/O control block that can be configured as input, output, or bidirectional. This architecture delivers deterministic, pin-locked timing - a defining MAX 5000 trait - which simplifies timing closure compared with SRAM-based FPGAs. Typical applications include address decoding and bus-interface glue logic in legacy 5V microcontroller and microprocessor systems, programmable state machines for industrial control, peripheral controllers (UART, timer, PWM), and replacement of multiple discrete 74LS/74HC TTL devices with a single reconfigurable part. The 5V tolerant I/O makes it ideal for retrofitting older 5V-only boards where 3.3V-only modern CPLDs cannot be used. When designing with the EPM5128GC-1, engineers should verify that the chosen package pinout matches the Altera MAX 5000 datasheet PGA-96+ pin map, add proper 0.1 uF decoupling on every supply pin, and use the Altera MAX+PLUS II or Quartus legacy support for design entry. Designers should also note that the ceramic windowed package is intended primarily for development - production boards typically migrate to the plastic-windowless equivalent for cost. This page synthesizes distributor pricing for EPM5128GC-1, same-family drop-in alternatives, parametric comparisons, and practical design notes that go beyond what the legacy Altera MAX 5000 datasheet alone provides.
EPM5128GC-2 - 128-Macrocell MAX 5000 CPLD, 50MHz, 5V | Altera
The Altera EPM5128GC-2 is a high-density, high-speed CMOS Erasable Programmable Logic Device (EPLD) from the legacy MAX 5000 family, integrating 2,500 usable gates and 128 macrocells in a single 68-pin PGA (Pin Grid Array) package. It operates with a 5V core supply and supports in-system propagation delays consistent with the -2 speed grade (tPD approximately 25 ns and a maximum toggle frequency near 50 MHz), making it suitable for glue-logic and state-machine replacement on 5V-tolerant boards. The MAX 5000 architecture combines EPROM-based configuration memory with a programmable AND/OR array, allowing designers to combine multiple SSI/MSI functions into a single device while retaining one-time programmable non-volatile storage. A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic IC that bridges the gap between discrete 74-series glue logic and larger FPGAs, integrating PAL/GAL-like macrocells with a wide AND-OR logic plane to implement combinational and registered logic. The MAX 5000 family uses ultraviolet-erasable EPROM cells for configuration and is considered a predecessor of the modern MAX 7000/MAX II families; it sits within the broader hierarchy of programmable logic devices (PLDs) -> CPLDs -> non-volatile logic ICs -> digital semiconductors. Key features include 2,500 gates, 128 macrocells, 68 programmable I/O pins, an enhanced -2 speed grade, and a 5V VCC tolerance suitable for legacy TTL/CMOS interfaces. Designers value the deterministic timing, low power consumption, and one-time programmable security for production designs. Technically, the EPM5128GC-2 leverages Altera's classic MAX architecture with buried macrocells and a programmable interconnect array (PIA) that routes sum-of-products terms across the device. Configuration is stored in UV-erasable EPROM cells, so the device is one-time programmable in production and erasable only with quartz-window exposure. Operating junction temperature spans 0C to +70C (commercial grade), and the ceramic PGA package (GC suffix) offers robust thermal performance for through-hole or socketed mounting. Typical applications include industrial 5V bus interface glue logic, legacy peripheral controllers (e.g., address decoding for ISA/VME), state-machine replacement in motor control, and retrofit designs that must match existing 5V CPLD footprints. It is also widely used in educational kits and aerospace/military programs where Altera's MAX 5000 silicon remains a long-lifecycle part. Designers should note that the EPM5128GC-2 requires a 5V supply rail and is not 3.3V tolerant; I/O banks share the VCC supply, so mixed-voltage interfacing demands external level shifters. For new designs, modern MAX II or MAX V equivalents in surface-mount packages are recommended, but the EPM5128GC-2 remains invaluable for maintenance and lifecycle-extension of legacy boards. This page synthesizes distributor pricing, same-brand MAX 5000 alternatives, and practical design notes not found in the manufacturer datasheet alone, helping engineers evaluate the EPM5128GC-2 for both legacy support and cost-down retrofits.
EPM5128GC2 - MAX 5000 CPLD 128 Macro Cells 50MHz 5V | Altera
The Altera (Intel) EPM5128GC2 is a member of the classic MAX 5000 family of high-speed, high-density CMOS Erasable Programmable Logic Devices (EPLDs) with 128 macro cells, 2.5K usable gates, a 50 MHz internal frequency, and 5V core supply, offered in a ceramic PGA package designated GC. The "GC" package code denotes a ceramic Pin Grid Array with a windowed (erasable) lid suitable for development, prototyping, and reprogrammable production flows. An EPLD (Erasable Programmable Logic Device) is a non-volatile programmable logic device that combines the architecture of a PAL (Programmable Array Logic) with an EPROM-style erasable cell, allowing engineers to implement glue logic, state machines, address decoding, bus interfacing, and other random-logic functions in a single chip. Within the broader programmable logic hierarchy, EPLDs sit between simple SPLDs/PALs and higher-density CPLDs and FPGAs, offering predictable timing, instant-on behavior, and zero in-system configuration overhead because the logic is stored in on-chip EPROM cells. Key features of the EPM5128GC2 include 128 macro cells organized into 8 Logic Array Blocks (LABs) of 16 macro cells each, 16 dedicated inputs, 64 I/O pins, a programmable interconnect array (PIA), a 5V VCC supply with 5V-tolerant I/O, a maximum internal toggle frequency of 50 MHz, propagation delays measured in tens of nanoseconds, and a programmable macrocell flip-flop with selectable D/T/JK/SR behavior. Per the datasheet, the part supports both combinatorial and registered logic with dedicated clear, preset, and clock controls per macro cell. The MAX 5000 architecture uses a sum-of-products AND/OR plane feeding a programmable macrocell register, with a global PIA that routes signals between LABs. This architecture provides fast, deterministic pin-to-pin timing that is independent of logic placement, which is highly desirable for asynchronous glue logic and bus interface designs. Unlike SRAM-based FPGAs, the EPM5128GC2 holds its configuration without external boot memory and is ready to drive outputs within nanoseconds of VCC ramp. Typical applications include legacy 5V bus-interface and address-decoding logic in industrial control backplanes, prototyping adapters and test fixtures where the ceramic PGA windowed package allows UV erasure and reuse, MIL/aerospace and high-reliability systems that still require mature 5V CPLD logic, replacement of discrete 74LS/74F glue-logic gates, and as a bridge between 5V and 3.3V buses using its 5V-tolerant I/O structure. When designing with this device, the ceramic PGA windowed package requires a UV eraser for reprogramming, so high-volume production generally migrates to one-time-programmable (OTP) plastic package variants such as EPM5128LC, while the GC2 remains the preferred choice for engineering development, breadboarding, and long-life military/aerospace programs. This page synthesizes distributor inventory, same-family drop-in alternatives (EPM5128GC, EPM5128GC-1), and practical design notes that go beyond what the MAX 5000 datasheet provides in isolation.
EPM5128GI - 128-Cell UV PLD, MAX 5000, CPGA-68 | Altera
The Altera EPM5128GI is a high-density, high-speed UV-erasable Complex Programmable Logic Device (CPLD) from the MAX 5000 family, providing 128 logic cells in a 68-pin ceramic Pin Grid Array (CPGA-68) windowed package. It offers a pin-to-pin propagation delay of 55 ns, operates from a single 5 V supply, and is designed for industrial temperature-grade applications requiring in-system reprogrammability through its UV-erasable EPROM technology. A CPLD (Complex Programmable Logic Device) is a non-volatile, factory-programmable integrated circuit that combines multiple PAL/GAL macrocell blocks with a programmable interconnect matrix, sitting in the programmable logic taxonomy between simple SPLDs/CPLDs and larger FPGAs. CPLDs are deterministic, have predictable timing (fixed propagation delay), retain configuration without external memory, and are typically used for glue logic, bus interfacing, address decoding, and state-machine implementation. The MAX 5000 family was Altera's first-generation high-density UV-erasable CPLD family, positioned for prototyping and production designs that benefit from windowed erasure and reprogramming. Key features of the EPM5128GI include 128 macrocells, 100% factory-tested logic, 5V CMOS technology, and a ceramic windowed package that allows repeated UV erasure for prototyping iterations. The CPGA-68 ceramic package provides robust mechanical and thermal performance suitable for industrial and military-grade applications. The device is also offered in plastic OTP (one-time-programmable) variants for high-volume production where re-programmability is not required. Architecturally, the MAX 5000 family uses Altera's classic EPLD architecture with Logic Array Blocks (LABs) and a global programmable interconnect array (PIA), which provides fully deterministic, hazard-free combinatorial and registered logic. The EPROM-based configuration cell technology ensures non-volatile storage of the user's logic design with no external boot PROM required. The 55 ns propagation delay supports interfaces up to approximately 18 MHz in combinatorial paths. Typical applications include industrial control logic, address decoding and bus interfacing in legacy 5V systems, prototyping platforms where iterative UV erasure is required, glue logic for microprocessor and microcontroller peripherals, state-machine controllers, and military/aerospace systems that require a windowed, reprogrammable, hermetic ceramic package. When designing with this device, account for the CPGA-68 socket requirement (it is not surface-mountable) and verify that your programmer supports the MAX 5000 family algorithm. The 5V-only supply and 55 ns speed grade place it in legacy designs; modern 3.3V systems should consider MAX 7000 or MAX II families instead. This page synthesizes distributor pricing, datasheet links, and same-family Altera alternatives for engineers evaluating or sourcing the EPM5128GI — practical context that goes beyond the original datasheet.