FPGA & CPLD
Produk (7,100+)
EPM7256AETC100-7N - 256-Macrocell MAX 7000A CPLD, 3.3V, 100TQFP | Intel
The Intel (formerly Altera) EPM7256AETC100-7N is a high-density, in-system programmable Complex Programmable Logic Device (CPLD) from the MAX 7000A family, integrating 256 macro cells across 16 logic array blocks and offering 84 user I/O pins in a 100-pin Thin Quad Flat Pack (TQFP) package. It is built on a 3.3V CMOS process, supports an internal supply range of 3.0V to 3.6V, and achieves a pin-to-pin propagation delay (tPD) of 7.5 ns with a maximum operating frequency of 126.6 MHz, making it well-suited for high-speed glue-logic, interface bridging, and bus-decoding tasks. A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that combines multiple PAL/GAL-style macrocell blocks with a centralized programmable interconnect matrix. In the system hierarchy it sits between discrete 74-series glue logic and larger FPGAs, providing deterministic, single-clock-cycle latency and instant-on behavior with no external boot memory required. The MAX 7000A family was one of Altera's most widely adopted EEPROM-based CPLD lines, valued for its In-System Programmability (ISP) via JTAG and its predictable timing closure for control-plane logic. Key features of the EPM7256AETC100-7N include 5,000 usable gates, 256 macro cells, 84 I/Os, in-system programmability via IEEE 1149.1 JTAG, and a commercial operating temperature range of 0C to 70C. The device also supports multiple I/O standards (3.3V LVTTL/LVCMOS), open-drain output options, and user-selectable slow-rate slew control for signal-integrity tuning. Programmable Security Bits protect the user's design against unauthorized readback. Architecturally, the MAX 7000A device ties 16 Logic Array Blocks (LABs) together via a global Programmable Interconnect Array (PIA). Each LAB contains 16 macro cells, each built around a product-term AND/OR array feeding a programmable flip-flop, supporting D, T, JK, or SR flip-flop operation. The 7.5 ns tPD figure refers to the combinational path through the PIA plus one macrocell, and the 126.6 MHz fCNT figure refers to the maximum flip-flop toggle frequency. Typical applications include bus-interface bridging between microprocessors and peripherals, address decoding and chip-select generation for memory-mapped systems, power-up sequencing logic, and replacement of multiple discrete 74LS/74HC glue-logic devices. The 84 I/O count comfortably supports 32-bit data buses plus dedicated control signals. When designing with this part, ensure that the JTAG chain is properly terminated with the TCK pull-up required by IEEE 1149.1 and that the VCCINT and VCCIO rails are decoupled with a 0.1 uF ceramic capacitor placed within 5 mm of each supply pin. For ISP via JTAG, follow Altera's BSDL file and ByteBlaster/USB-Blaster programming flow.
EPM7256AETC144-10 - MAX 7000A 256-Macrocell CPLD, 10ns, TQFP-144 | Intel
The Intel (formerly Altera) EPM7256AETC144-10 is a high-density, non-volatile, electrically-erasable Complex Programmable Logic Device (CPLD) from the MAX 7000A family, delivering 256 macrocells, 36 user I/Os, and a 10 ns pin-to-pin logic delay in a 144-pin TQFP package. The part operates from a 3.3 V core supply, offers 5 K usable gates of logic, and provides in-system programmability via the IEEE Std. 1149.1 JTAG interface plus a separate Fast Passive Serial (FPS) configuration path for production programming. What is a CPLD? A Complex Programmable Logic Device is a non-volatile, flash- or EPROM-backed programmable logic device that combines multiple PLD-like Logic Array Blocks (LABs) on a single die with a global interconnect matrix. Architecturally a CPLD sits between simple SPLDs/GALs and large SRAM-based FPGAs: it provides deterministic, fast input-to-output propagation (typically 3-15 ns), zero external configuration memory, and is best suited to glue-logic, bus interfacing, address decoding, and state-machine replacement rather than DSP or high-register-count datapath designs. Within the wider taxonomy, CPLDs belong to the broader category of programmable logic devices (PLDs), which in turn sit under digital logic integrated circuits and ultimately under semiconductors. The EPM7256AETC144-10 occupies the high-density end of the MAX 7000A range and is widely used as a system-level integration device. Key features that distinguish this part include 256 macrocells (equivalent to roughly 5,000 usable gates), 16 dedicated input pins, 36 bidirectional I/O pins, an f_MAX of approximately 95.2 MHz, and a 10 ns tPD that makes it the -10 speed-grade variant of the EPM7256AE family. The 'A' suffix indicates the 3.3 V core variant of MAX 7000A, the 'TC144' indicates the commercial-temperature TQFP-144 package, and the '-10' speed grade denotes the 10 ns propagation delay bin. Typical applications include bus-interface bridging, address decoding for legacy microprocessors/microcontrollers, power-supply sequencing logic, I/O expansion, and replacement of multiple discrete TTL/CMOS glue-logic packages in industrial controllers, telecom line cards, and test equipment. Design considerations for engineers using this part include proper JTAG chain ordering when stacked with other boundary-scan devices, supply decoupling for the 3.3 V VCCINT and the I/O bank VCCIO rails, and unused-pin tie-off discipline per the MAX 7000A handbook. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not collected in any single datasheet source.
EPM7256AETC144-10N - MAX 7000A 256-Macro CPLD, 10ns TQFP-144 | Intel
The Intel (formerly Altera) EPM7256AETC144-10N is a high-density 3.3V CMOS Complex Programmable Logic Device (CPLD) from the MAX 7000A family, delivering 5,000 usable gates, 256 macro cells, and a 10 ns pin-to-pin propagation delay in a 144-pin TQFP package. The device integrates non-volatile EEPROM configuration memory with in-system programmability (ISP) via JTAG, eliminating the need for external boot PROMs, and offers user I/O count of up to 120 pins per package for interface-heavy glue-logic roles. A Complex Programmable Logic Device (CPLD) is a non-volatile, instantly-on programmable logic IC that combines multiple PAL-like logic blocks on a single die, wired together by a programmable interconnect matrix. In the system hierarchy it sits between simple gate arrays and full FPGAs: it provides deterministic timing, sub-15 ns propagation delays, and zero-configuration power-up, making it ideal for bus decoding, address mapping, state-machine control, and I/O expansion rather than DSP/algorithmic workloads. Key features of this part include 256 macro cells distributed across 16 logic array blocks, 4 input lines per macro cell, a global 3.3V core supply with 5V-tolerant I/O, pin-to-pin tPD of 10 ns, and a maximum internal operating frequency of 95.2 MHz. The device is pin-compatible with the 5.0V MAX 7000S family, allowing board-level migration. Extended industrial temperature range support and built-in IEEE 1149.1 JTAG boundary-scan test complete the feature set. Architecturally, the MAX 7000A implements a classic AND-OR (product-term) logic fabric backed by EEPROM configuration cells, ensuring instant-on behaviour with no bitstream load time. The 3.3V core reduces power consumption versus legacy 5V PLDs, and the ISP_Done bit guarantees complete programming verification on every flash cycle. Typical applications include telecommunications line cards, peripheral bus bridging (PCI/ISA/address decoding), industrial control boards, and legacy 5V-system glue-logic replacement. When designing with the EPM7256AETC144-10N, designers must ensure the JTAG chain is correctly terminated with TCK pull-down and TMS pull-up resistors per the datasheet, and must respect the maximum I/O toggle rate to avoid ground-bounce on heavily-loaded outputs. This page synthesizes distributor pricing, drop-in speed-grade alternatives, application companions, and practical design notes not found in the manufacturer datasheet alone.
EPM7256AETC144-5N - 256-Macrocell MAX 7000A CPLD | Altera | TQFP-144
The Altera (Intel) EPM7256AETC144-5N is a high-density, EEPROM-based Complex Programmable Logic Device (CPLD) from the MAX 7000A family, providing 5,000 usable gates and 256 macro cells in a 144-pin TQFP (TQ) package. It is fabricated on advanced CMOS technology, operates from a 3.3 V supply, and delivers pin-to-pin propagation delays as fast as 4.5 ns with internal counter frequencies up to 227.3 MHz (172.4 MHz per published specifications). A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that combines multiple PAL/GAL-style macrocell arrays with a central interconnect fabric. CPLDs sit between small SPLDs and large FPGAs in the programmable logic hierarchy, offering deterministic timing, instant-on operation from on-chip EEPROM, and higher I/O count than SPLDs without the configuration overhead of SRAM-based FPGAs. They are widely used for I/O expansion, bus interface glue logic, address decoding, and state-machine controllers in cost-sensitive designs. Key features of the EPM7256AETC144-5N include 36 user I/Os (per the Mouser listing) or 84 user I/Os (per DigChip), 144 pins total, in-system programmability (ISP) via JTAG, 3.3 V core operation with 5 V-tolerant I/O on most members of the family, and four pin-to-pin delay grades inside the MAX 7000A series. The '5N' suffix denotes the -5 speed grade and lead-free / Pb-free packaging. The device supports multi-voltage operation on its I/O banks through dedicated VCCINT and VCCIO pins, allowing mixed-voltage interfacing between 3.3 V, 2.5 V, and 1.8 V rails without external level shifters. Typical applications include bus-interface bridging, peripheral control in embedded systems, address decoding and chip-select generation in microcontroller designs, high-speed state-machine controllers, and industrial control systems. The deterministic 4.5 ns tPD simplifies timing closure where ASIC-like predictability is required. When designing with the EPM7256AETC144-5N, observe the recommended decoupling scheme (one 0.1 microfarad ceramic capacitor per VCC pin) and provide a clean JTAG chain. The -5N suffix is the slowest speed grade in the family; faster -7 and -10 grades are also available in the same TQFP-144 footprint for timing-critical paths.
EPM7256AETC144-7N - MAX 7000A CPLD, 256 Macrocells, 7.5ns | Intel
The Intel EPM7256AETC144-7N is a high-density, high-performance Complex Programmable Logic Device (CPLD) from the MAX 7000A family, delivering 256 macrocells, 5,000 usable gates, and 120 user I/O pins in a 144-pin TQFP (20x20 mm) surface-mount package. It operates from a single 3.3 V supply (3.0 V to 3.6 V), supports in-system programmability (ISP) via IEEE 1149.1 JTAG, and offers a pin-to-pin propagation delay of 7.5 ns with a maximum counter frequency of 126.6 MHz. A CPLD (Complex Programmable Logic Device) is a non-volatile, flash- or EEPROM-based programmable logic device that sits between simple SPLDs/PLDs and FPGAs in the programmable-logic hierarchy. It contains multiple PAL-like logic array blocks (LABs) interconnected by a central programmable switch matrix. CPLDs are deterministic, boot in microseconds without external configuration memory, and are widely used for glue logic, bus interfacing, address decoding, state-machine control, and I/O expansion where predictable timing and instant-on behavior matter more than the very high logic density of an FPGA. Key features include 16 logic array blocks (LABs), 256 macrocells distributed as 16 macrocells per LAB, JTAG-based in-system programmability, multi-voltage I/O support via JTAG-driven I/O standards, open-drain output option, programmable slew rate, and a commercial operating temperature range of 0 °C to 70 °C. The MAX 7000A architecture uses EEPROM configuration cells, so the device retains its logic when power is removed and requires no external boot PROM. The device is fabricated on an advanced CMOS EEPROM process. Each macrocell contains a programmable AND/OR array, a flip-flop with selectable Clear/Preset/Clock, and an I/O control block with selectable registered or combinatorial output. The 7.5 ns pin-to-pin delay (commercial grade) and 4.5 ns fast-option parts (MAX 7000AE) suit applications where deterministic, nanosecond-range timing replaces discrete 74-series glue logic and reduces board area and BOM count. Typical applications include I/O expansion and glue logic for microcontrollers/MPUs, address decoding for memory-mapped buses, bus protocol bridging, peripheral control in industrial and telecom equipment, and state-machine-driven control logic in printers, routers, and test gear. The commercial 0 °C to 70 °C window suits indoor equipment; industrial designs requiring −40 °C to +85 °C should select the EPM7256AETI144-7N variant instead. When designing with the EPM7256AETC144-7N, observe the 3.0 V to 3.6 V supply window carefully and reserve the four JTAG pins (TDI, TDO, TMS, TCK) plus a dedicated TRST/DEV_OE option. Inputs above 3.6 V will stress the EEPROM I/O cells; for 5 V-tolerant inputs consider the MAX 7000AE family or add external level shifters.
EPM7256AETI100-7N - 256-MacroCell MAX 7000A CPLD, 100TQFP | Intel
The Intel (formerly Altera) EPM7256AETI100-7N is a 256-macrocell, 5,000-gate CMOS Complex Programmable Logic Device (CPLD) from the MAX 7000A family, housed in a 100-pin TQFP (Thin Quad Flat Pack) package with industrial-grade temperature rating. It operates from a 3.3 V core supply and provides a maximum toggle frequency of 126.6 MHz, with up to 84 user I/O pins for glue-logic, interface bridging, and bus-management tasks. The device uses EEPROM-based non-volatile configuration cells so the design loads instantly at power-up without an external boot PROM. A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic IC that sits between simple PAL/GAL arrays and larger FPGAs. Architecturally, a CPLD partitions logic into multiple macrocell-PLA blocks connected by a central interconnect matrix, giving predictable, deterministic timing well suited to control-plane logic, address decoding, and state-machine implementation. In the system hierarchy it belongs to the programmable-logic family, alongside SPLDs, FPGAs, and PALs, and is commonly classified as a power-management and glue-logic companion to microcontrollers, microprocessors, and bus interfaces. Key features of the EPM7256AETI100-7N include 256 macrocells, 5 K usable gates, 84 user I/O, in-system programmability via JTAG, and IEEE Std 1149.1 boundary-scan test support. The MAX 7000A architecture provides pin-locking for incremental design changes and individual output enable control per macrocell, allowing wide design reuse across board revisions. The 100-pin TQFP (1.0 mm pitch, 14 mm x 14 mm body) package is a JEDEC-standard surface-mount outline well suited to industrial assembly. Typical applications include address decoding and bus-interface bridging, state-machine controllers, peripheral glue logic in embedded systems, and reconfigurable I/O expansion for microcontrollers and DSPs. Designers also use MAX 7000A CPLDs to replace discrete 74-series logic, reducing board area and BOM cost. When using this device, ensure that the JTAG chain is properly terminated and that input signals respect the 3.3 V VCCIO supply; a 0.1 uF decoupling capacitor should be placed adjacent to each supply pin. This page synthesizes distributor pricing, drop-in alternatives within the MAX 7000A family, and practical design notes not found in the manufacturer datasheet alone.
EPM7256AETI144-7 - 256-Macro MAX 7000A CPLD, TQFP-144 | Intel
The Intel (Altera) EPM7256AETI144-7 is a 256-macrocell member of the MAX 7000A family of high-density, in-system programmable CPLDs, housed in a 144-pin TQFP (plastic Thin Quad Flat Pack) package with industrial temperature grade (-40C to +85C) and 7 ns pin-to-pin logic delay. The device integrates 5,000 usable gates, 256 macrocells, 36 user I/Os and an in-system programmability controller based on 3.3 V core operation. A CPLD (Complex Programmable Logic Device) is a non-volatile, electrically erasable programmable logic device that combines multiple PAL/GAL-style macrocell arrays on a single chip with a global interconnect fabric. In the broader component hierarchy, a CPLD sits beside the FPGA (Field-Programmable Gate Array) as a non-volatile, instant-on alternative that is well suited to glue-logic, bus-interface, state-machine and power-up control tasks where deterministic timing and zero-config boot are required. Key features include 7 ns tPD combinational delay, 126.6 MHz maximum operating frequency, IEEE 1149.1 (JTAG) boundary-scan support, MultiVolt I/O allowing 2.5 V/3.3 V/5 V interfacing, and dedicated input clocks plus a global OE (output enable). The device is fabricated on a 5 V-tolerant, EEPROM-based architecture that retains its configuration without external memory, eliminating the boot PROM typically required by SRAM-based FPGAs. Technical depth: each macrocell contains a programmable AND/OR array with a product-term allocator feeding a configurable flip-flop; the 36 I/Os are organized as 4 I/O banks driven by fast input and output registers. With 16 macrocells per Logic Array Block (LAB) and a clear predictable timing model, Quartus / MAX+PLUS II can place-and-route designs with deterministic worst-case fMAX - a property that makes MAX 7000A attractive for protocol bridges and industrial control. Typical applications include industrial control, bus-interface glue logic, motor control state machines, and legacy peripheral bridging on 3.3 V mixed-voltage boards. The instant-on non-volatile configuration is also well suited to safety-critical and brown-out-tolerant systems. Designers should note that -7 (7 ns) speed grade implies tighter tCO budgets, and JTAG programming reduces fixture complexity in production. This page synthesizes distributor pricing, MAX 7000A drop-in alternatives, and practical design notes not found in a single Altera datasheet.
EPM7256AETI144-7N - MAX 7000A CPLD 256 Macro 3.3V TQFP-144
The Altera (now Intel) EPM7256AETI144-7N is a 5K-gate, 256-macrocell EE CMOS CPLD from the MAX 7000A family, packaged in a 144-pin TQFP and operating from a 3.3V core supply with 5.0V-tolerant I/O. A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic IC that provides instant-on behavior, deterministic timing, and flexible glue-logic integration. CPLDs sit hierarchically below FPGAs and above discrete 74-series logic: they offer more density than discrete logic but lower latency and simpler tool flow than FPGAs, making them ideal for bus decoding, address mapping, state-machine control, and I/O expansion in cost-sensitive, low-power systems. Key features of the EPM7256AETI144-7N include 256 macrocells, 36 user I/Os (industrial-grade), pin-to-pin logic delays of 7.5 ns, a maximum internal counter frequency of 126.6 MHz, and JTAG-based in-system programmability via the IEEE 1149.1 boundary-scan interface. The MAX 7000A architecture combines a programmable AND/OR array with macrocell flip-flops and per-pin programmable output slew-rate control. This part is built on a 0.3 µm EEPROM process node with 5V-tolerant I/O, allowing direct interface to legacy 5V peripherals without level shifters. The 144-pin TQFP offers 36 dedicated user I/Os, four dedicated inputs, and global control signals for clock, clear, and output enable. MultiVolt I/O supports mixed-voltage rails in designs bridging 5.0V and 3.3V domains. Typical applications include peripheral-interface bridging (PCI, ISA, VME bus decoding), state-machine-based motor and servo control, glue-logic replacement of multiple discrete 74-series devices, address decoding for memory-mapped microcontrollers, and industrial-control systems requiring instant-on non-volatile configuration. The industrial temperature grade (-40 °C to +85 °C) supports harsh-environment deployment. When designing with this part, ensure that the Quartus II / MAX+PLUS II toolchain is used for synthesis and fitting. Reserve at least one JTAG pin (TCK, TMS, TDI, TDO) group in the pinout to support in-system programming, and decouple every VCCINT and VCCIO pin with a 0.1 µF ceramic capacitor placed within 5 mm of the package. This page synthesizes distributor pricing, verified parametric data, drop-in alternatives from the MAX 7000A family and competitor equivalents, and practical design notes not consolidated on any single manufacturer or distributor page.
EPM7256AQC208-7 - MAX 7000A CPLD 256 Macrocells | Altera
The Altera EPM7256AQC208-7 is a MAX 7000A-family Complex Programmable Logic Device (CPLD) offering 256 macrocells, 5,000 usable gates, and 164 maximum user I/O pins in a 208-pin Plastic Quad Flat Pack (PQFP) package. It operates from a 3.0 V to 3.6 V core supply and delivers 7 ns pin-to-pin logic delays with counter frequencies up to 125 MHz, making it a workhorse programmable logic solution for glue-logic consolidation, bus bridging, and legacy industrial control designs. A CPLD (Complex Programmable Logic Device) is a programmable logic IC built from an array of macrocells connected by a programmable interconnect matrix. Unlike an FPGA, which uses fine-grained lookup tables and volatile SRAM configuration, a CPLD uses non-volatile EEPROM cells and coarse-grained macrocells, giving it deterministic timing, instant-on operation, and high immunity to single-event upsets. In the product hierarchy, the EPM7256AQC208-7 sits within CPLD -> programmable logic device (PLD) -> embedded programmable logic -> digital integrated circuit. Key features include 256 macrocells organized into 16 logic array blocks (LABs), 5,000 usable gates, in-system programmability (ISP) via the IEEE 1149.1 JTAG interface, and MultiVolt I/O that allows the 3.3 V core to interface directly with 5.0 V, 3.3 V, and 2.5 V logic levels. The 7 ns speed grade supports 125 MHz counter operation and 227.3 MHz internal toggle rates, sufficient for PCI bus interfacing, DMA control, and high-speed state machines. The MAX 7000A architecture uses EEPROM configuration cells, so the device retains its configuration without an external boot PROM and is immediately active at power-up. Each macrocell provides programmable flip-flops with independent clock, clear, and preset, plus product-term allocation that can be shared across macrocells to implement wide combinatorial functions. The 208-pin PQFP provides 164 user I/O pins, giving high pin-count density for address decoding, chip-select generation, and peripheral expansion. Typical applications include industrial control and factory automation glue logic, legacy PCI/ISA bus bridging, telecommunications line-card control, test and measurement instrumentation, and lighting control systems. The wide 3.0-3.6 V supply and 5 V-tolerant I/O make it suitable for mixed-voltage retrofits of older 5 V designs. When designing with this device, note that the MAX 7000A family is a mature, non-volatile CPLD family; designs should be compiled with Quartus II 13.0sp1 or earlier, the last toolchain release supporting MAX 7000A. This page synthesizes distributor availability, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
EPM7256AQI208-10 - 256-Macrocell MAX 7000A CPLD, 10ns, PQFP-208 | Intel
The Intel (formerly Altera) EPM7256AQI208-10 is a 256-macrocell, 10ns-pin-to-pin-delay member of the MAX 7000A family of high-performance, 3.3V EEPROM-based Complex Programmable Logic Devices (CPLDs), housed in a 208-pin Plastic Quad Flat Pack (PQFP) package. It integrates 5,000 usable gates organized into 16 Logic Array Blocks (LABs) with 16 macrocells each, exposes 68 user I/O pins, and supports in-system programmability (ISP) via the built-in IEEE Std. 1149.1 JTAG boundary-scan interface. A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic IC that combines the instant-on behavior, deterministic timing, and single-chip simplicity of traditional PAL/GAL architectures with the density and macrocell richness of small FPGAs. It belongs to the broader taxonomy of programmable logic devices -> PLDs -> CPLDs -> EEPROM-based CPLDs -> MAX 7000A family. The "A" suffix denotes the second-generation MAX 7000A architecture with MultiVolt I/O, the "Q" in the device identifier denotes the PQFP package, "I" denotes the industrial temperature range, and the "-10" suffix specifies a 10ns worst-case pin-to-pin propagation delay with a 93.5 MHz maximum internal counter frequency. Key features include MultiVolt I/O interfaces that allow the device core to operate at 3.3V while I/O banks remain compatible with 5.0V, 3.3V, and 2.5V logic levels; 4.5ns pin-to-pin logic delays on internal paths; counter frequencies up to 227.3 MHz; and pin counts ranging across thin quad flat pack (TQFP), PQFP, and ball-grid array (BGA) options for space-constrained designs. The EPM7256AQI208-10 specifically delivers the largest density and highest I/O count in the MAX 7000A PQFP-208 line, making it suitable for bus-interface glue logic and protocol-bridging functions. Typical applications include industrial control glue logic, peripheral bus interfacing (PCI, ISA, VME bridge logic), address decoding and chip-select generation, microcontroller I/O expansion, state-machine implementation in motor-control boards, and legacy telecom backplane glue. Designers choose this part for its non-volatile instant-on configuration (no external boot PROM needed), deterministic 10ns timing, and 3.3V core with 5V-tolerant I/O that simplifies mixed-voltage system design. A key design consideration is that the industrial-grade "I" suffix ensures operation from -40C to +85C ambient. Designers should budget adequate PQFP thermal dissipation - the plastic package can dissipate roughly 1W at typical 3.3V operating conditions with moderate toggle rates, so high-utilization designs may require airflow. The JTAG ISP interface allows in-field re-programming but requires the 3.3V VCCIO rail to be stable during ISP cycles. This page synthesizes distributor stock levels, parametric cross-references to the MAX 7000A family, and design guidance beyond the manufacturer datasheet to help engineers validate the EPM7256AQI208-10 against modern CPLD alternatives.
EPM7256ATI144-10 - 256-Macrocell CPLD, 3.3V, 144-TQFP | Altera
The Altera EPM7256ATI144-10 is a high-performance, 3.3-V, EEPROM-based Complex Programmable Logic Device (CPLD) from the MAX 7000A family, providing 256 macrocells, 16 Logic Array Blocks (LABs), and a 10 ns pin-to-pin delay in a 144-pin TQFP package. It supports up to 5,000 usable gates and operates across an industrial temperature range of -40C to +85C, making it suitable for demanding embedded and communications applications. A CPLD (Complex Programmable Logic Device) is a non-volatile, instantly-on semiconductor that combines the deterministic timing of PAL/GAL architecture with the density and flexibility of an FPGA-like fabric, but with much faster I/O setup. In the broader component hierarchy, a CPLD sits below an FPGA and above a simple SPLD/PAL — it is often used for glue logic, bus interfacing, power-up sequencing, and protocol bridging where nanosecond-class timing predictability and 3.3-V in-system programmability are required. Key features of the EPM7256ATI144-10 include 10 ns maximum pin-to-pin delay (tPD), a maximum operating frequency of 93.5 MHz (fCNT), 100 user I/O pins (68 standard I/O plus JTAG and dedicated pins), and 3.3-V in-system programmability (ISP) through the built-in IEEE Std. 1149.1 JTAG interface. The device also includes MultiVolt I/O supporting 2.5-V and 3.3-V interfaces, a 4-pin JTAG chain, open-drain output option on every pin, and programmable security bit for design protection. The MAX 7000A architecture is built on second-generation Multiple Array MatriX (MAX) technology with EEPROM memory cells, providing non-volatile configuration that retains state through power cycling. Each macrocell contains a programmable AND/OR array, a product-term selector, and a flipflop with three clear/preset modes. The interconnect is a continuous, high-speed routing matrix (PIA) that delivers uniform delay across the device, enabling predictable timing closure for synchronous and asynchronous designs alike. Typical applications include telecommunications infrastructure (DSLAM line cards, optical transport), industrial automation and motor control, medical instrumentation, military and avionics subsystems, and glue logic replacement around microprocessors, ASICs, and DSPs. Designers favor this part when deterministic 10 ns timing, low power, and instant-on non-volatile behavior are required together. When designing with this device, allocate adequate 3.3-V decoupling on every VCCINT/VCCIO pair, leave a minimum 100 ns setup margin on JTAG TMS/TCK timing for ISP, and verify the Quartus/MAX+PLUS II fitter report against the 93.5 MHz fCNT ceiling to avoid path timing violations. The 144-pin TQFP exposes a thermal pad area that benefits from a 4-layer PCB with a ground pour to keep junction temperature within the -40C to +85C ambient window. This page synthesizes distributor pricing, drop-in alternatives from the same MAX 7000A family, and practical design notes not found in the manufacturer datasheet.
EPM7256ATI144-10N - 256-Macrocell MAX 7000A CPLD, 144-TQFP | Altera
The Altera (Intel) EPM7256ATI144-10N is a 3.3V, 256-macrocell, 144-pin TQFP member of the MAX 7000A complex programmable logic device (CPLD) family. Per the manufacturer datasheet, it integrates 5,000 usable gates, 256 macrocells distributed across 16 Logic Array Blocks (LABs), and 4 dedicated logic array block interconnects, with up to 68 user I/O pins depending on package variant. The "10N" suffix denotes a 10 ns pin-to-pin propagation delay and an industrial operating temperature grade. A CPLD (Complex Programmable Logic Device) is a non-volatile, flash- or EEPROM-based programmable logic device that implements combinational and registered logic in a deterministic, predictable architecture. CPLDs sit hierarchically between simple SPLDs (e.g., GAL/PAL) and higher-density FPGAs, offering instant-on behavior, robust I/O structures, and high-drive capability suitable for bus interfacing, glue logic, and control-plane state machines. Key features of the EPM7256ATI144-10N include in-system programmability (ISP) through IEEE Std. 1149.1 JTAG, 3.3V core operation, MultiVolt I/O supporting 2.5V and 3.3V interface levels, a maximum internal operating frequency around 93.5 MHz, and a programmable power-saving mode that reduces quiescent current on unused macrocells. The MAX 7000A architecture uses an EEPROM process that delivers non-volatile configuration, eliminating the need for an external boot PROM. Technically, the device uses the second-generation Multiple Array MatriX (MAX) architecture with each LAB containing 16 macrocells. Each macrocell provides configurable registers, product-term selection, and programmable I/O control. The interconnect is a continuous, fast routing fabric that delivers predictable, deterministic timing - a defining advantage of CPLDs over SRAM-based FPGAs for control logic. Typical applications include bus interfacing (PCI, ISA, address decoding), state-machine and sequencer designs, I/O expansion for microcontrollers and DSPs, glue logic replacement of discrete 74-series TTL, and industrial-control boards requiring non-volatile instant-on logic. It is widely used in telecom line cards, factory-automation controllers, and legacy embedded-system upgrades. When designing with the EPM7256A, observe the MultiVolt I/O supply guidance: VCCIO must be tied to the voltage level of the devices it interfaces with, while VCCINT must always be 3.3V. The industrial temperature grade (-40C to +85C) supports harsh-environment deployment. This page synthesizes distributor pricing, drop-in same-package alternatives from the MAX 7000A and MAX 7000S families, and design notes not consolidated in the manufacturer datasheet.
EPM7256BFC256-10 - MAX 7000B CPLD 256MC 10ns FBGA-256 | Intel
The Intel (Altera) EPM7256BFC256-10 is a 256-macrocell, 5K-gate CMOS CPLD from the MAX 7000B Programmable Logic Device Family, housed in a 256-ball FineLine BGA (FBGA-256, 17x17 mm) package. It delivers a 10 ns pin-to-pin logic delay, an internal core voltage of 2.5V (2.375V-2.625V), and a maximum operating frequency of 94.3 MHz per verified distributor specifications. A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that combines multiple PAL/GAL-style macrocells with a programmable interconnect fabric on a single chip. Architecturally, CPLDs sit between small FPGAs and discrete glue-logic ICs: like FPGAs they implement arbitrary combinatorial and sequential logic, but like discrete logic they provide deterministic, zero-latency propagation through an EEPROM- or flash-based configuration cell. The MAX 7000B family targets glue-logic replacement, bus-interface bridging, and power-up control in industrial, telecom, and embedded systems. Key features of the EPM7256BFC256-10 include 256 macrocells, 16 logic array blocks, 164 user I/Os, in-system programmability via IEEE 1149.1 JTAG, and 5V-tolerant I/O. The 10 ns tPD enables 100 MHz+ state-machine decoding and address-decoding pipelines. The 2.5V core with 5V-tolerant I/Os simplifies interfacing to legacy 3.3V/5V buses without external level shifters. The -10 speed grade is the mid-tier offering between -7 (faster) and -15 (slower) in the same family. The device uses a non-volatile EEPROM configuration cell with 100 program/erase cycles minimum, providing instant-on operation at power-up with no external boot PROM. The interconnect is a continuous, fast-path Classic architecture that delivers predictable timing without the place-and-route variability typical of SRAM-based FPGAs - a key advantage for control-plane applications where deterministic latency matters more than raw logic density. Typical applications include bus-interface bridging (e.g., PCI-to-ISA, 8-bit to 16-bit multiplexing), glue-logic consolidation in embedded CPU boards, industrial control system I/O expansion, and legacy peripheral replacement in telecom backplanes. The wide I/O count (164) and 5V tolerance suit industrial 5V-bus designs. The JTAG in-system programmability simplifies firmware updates on assembled boards. When designing with this part, allocate the BGA-256 footprint with proper microvia stack-up and 1.27 mm pitch escape routing. The 2.5V core requires an external LDO or switching regulator from the 3.3V rail. For new designs, consider MAX II or MAX V CPLDs for lower cost and lower power unless you specifically need the 5V-tolerant I/O of the MAX 7000B family. This page synthesizes distributor pricing from DigiKey/Mouser/Octopart, package-compatible drop-in alternatives, and practical design notes that are not found in the bare manufacturer datasheet.
EPM7256BQC208-7 - 256-Macro MAX 7000B CPLD, 208-PQFP | Intel
The Intel (formerly Altera) EPM7256BQC208-7 is a member of the MAX 7000B family of Complex Programmable Logic Devices (CPLDs), delivering 5,000 usable gates, 256 macro cells, and 164 user I/Os in a 208-pin Plastic Quad Flat Pack (PQFP) package. It operates on a 2.5 V core supply with a maximum internal frequency of 126.6 MHz and a propagation delay of approximately 7.5 ns (the '-7' speed grade). The device integrates non-volatile EEPROM configuration cells so the programmed logic retains state across power cycles without an external boot PROM. A CPLD (Complex Programmable Logic Device) is a non-volatile, flash- or EEPROM-based programmable logic device that sits between discrete 74-series glue logic and larger FPGAs. The MAX 7000B architecture combines logic array blocks (LABs), a programmable interconnect array (PIA), and I/O control blocks. Within the broader taxonomy, the EPM7256BQC208-7 is a CPLD -> programmable logic device -> digital logic IC -> semiconductor, designed for high-pin-count glue-logic, bus-interface, and state-machine applications where deterministic timing and instant-on behavior are required. Key features of this part include 4-input look-up tables within each macro cell, programmable interconnect with predictable routing delays, JTAG (IEEE 1149.1) boundary-scan support, in-system programmability via JTAG, and a commercial 0C to 90C operating range. The wide I/O count (164) makes it attractive for parallel bus decoding, address latching, and legacy peripheral interfacing. Typical applications include industrial control boards, telecom line cards, ASIC/FPGA prototyping, peripheral glue logic around microprocessors and DSPs, and any design that benefits from non-volatile, deterministic, instant-on logic. The 208-pin PQFP footprint is hand-solderable with care but is generally destined for socketed or production SMT assembly.
EPM7256EGC192-12 - MAX 7000 CPLD 256MC 5K Gates 12ns | Intel
The Intel (formerly Altera) EPM7256EGC192-12 is a high-density, EEPROM-based Complex Programmable Logic Device (CPLD) from the MAX 7000 family, delivering 256 macrocells, 5,000 usable gates, and 164 user I/O pins in a 192-pin ceramic Pin Grid Array (CPGA) package. It features a 12 ns pin-to-pin propagation delay, an internal 90.9 MHz maximum operating frequency, and a 5V (4.75V to 5.25V) core supply. A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic IC that bridges the gap between discrete 74-series glue logic and higher-density FPGAs. Architecturally, a CPLD consists of multiple PAL-like Logic Array Blocks (LABs) interconnected by a central programmable switch matrix. The MAX 7000 family uses an EEPROM process for in-system programmability (ISP) via JTAG, retaining configuration without an external boot PROM. In the broader taxonomy: CPLD -> programmable logic -> logic IC -> semiconductor -> integrated circuit. Key features include four pin-compatible density options (EPM7032/7064/7096/7128 give way to 7160/7192/7256 within MAX 7000), a programmable macrocell flipflop with selectable clear/preset/clock, a JTAG-compliant IEEE Std 1149.1 boundary-scan test interface, and programmable interconnect. Each macrocell supports configurable combinational or registered logic, with a separate product-term array implementing the AND-OR sum-of-products equation. From an architectural standpoint, the EPM7256EGC192-12 implements the classic MAX 7000 macrocell with 16 product terms per macrocell expandable via shareable expanders and parallel expanders, supporting up to 32 product terms per macrocell for complex state-machine logic. The programmable interconnect array (PIA) routes any LAB output to any LAB input, simplifying board-level glue-logic replacement. The device also includes in-system programming via 5V ISP and supports IEEE 1149.1 JTAG for both configuration and boundary-scan test. Typical applications include bus-interface and protocol-bridging glue logic, peripheral I/O expansion for legacy microprocessors, decoder/encoder logic in industrial control backplanes, and replacement of multiple discrete 74LS/74HC packages to reduce PCB area and BoM complexity. The 192-pin CPGA provides ample I/O for parallel-bus interfaces. When designing with this part, plan the JTAG chain and ISP programming voltage sequencing carefully. CPGA packages require through-hole sockets or careful pin alignment; consider switching to a QFP-pin-compatible MAX 7000 variant (e.g., EPM7256AQC208) for new surface-mount designs, but be aware of logic-resource differences between MAX 7000 generations. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
EPM7256EGC192-12EM - MAX 7000 CPLD 256 Macro 12ns 192-Pin PGA | Intel / Altera
The Intel / Altera (formerly Altera) EPM7256EGC192-12EM is a MAX 7000 family Complex Programmable Logic Device (CPLD) featuring 256 macrocells, 192-pin ceramic PGA (Pin Grid Array) package, and a 12 ns pin-to-pin propagation delay. Built on Altera's second-generation MAX architecture with EEPROM process technology, it offers 5,000 usable gates and in-system programmability via the IEEE Std. 1149.1 JTAG interface. The -12 speed grade and 90.9 MHz maximum operating frequency make it suitable for high-performance glue-logic and bus-interface applications. A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that sits hierarchically between simple PLDs and FPGAs. CPLDs use a classic PLA-like architecture (AND/OR arrays feeding macrocells with flip-flops) and provide deterministic, fast I/O-to-I/O timing with predictable pin-to-pin delays - typically 3-15 ns - making them ideal for glue logic, address decoding, bus arbitration, state-machine control, and boot-loader configuration of FPGAs/ASICs. The MAX 7000 family belongs to the broader Programmable Logic Device > Programmable Logic > Semiconductor Device category tree. Key specifications include 256 macrocells with 16 macrocell logic array blocks (LABs), 164 user I/O pins (16 of which are JTAG/dedicated), 5 V core / 3.3 V or 5 V I/O multi-voltage compatibility via MultiVolt I/O, 5 ns input setup time, and programmable interconnect array (PIA). The PGA-192 ceramic package supports commercial and industrial temperature grades with a maximum junction temperature of 150 C, while the -EM suffix designates a specific Altera package/temperature/lead-finish ordering option. Typical applications include high-speed bus bridging and decoding (PCI, VME), peripheral interface glue logic (UART, DMA, memory controllers), state-machine controllers, industrial control boards, telecom backplane interface logic, and configuration controllers for FPGAs/ASICs. The deterministic 12 ns tPD makes it ideal for asynchronous control paths where FPGAs would add unnecessary latency and cost. When designing with the EPM7256EGC192-12EM, ensure all VCCINT (5 V) and VCCIO bank pins are properly decoupled with 0.1 uF and 10 uF capacitors placed close to the package. The ceramic PGA-192 socket footprint requires through-hole PCB pads - confirm your board supports PGA (not BGA/QFP) before committing to this package. Use the JTAG TCK frequency at or below 16 MHz for ISP programming. This page synthesizes distributor pricing, drop-in MAX 7000 same-package alternatives, and practical design notes not found in the Altera legacy datasheet, helping engineers extend the lifecycle of mature MAX 7000 designs without PCB rework.
EPM7256EGI192-15 - 256-Macrocell MAX 7000 CPLD 5V 192-CPGA
The Intel (Altera) EPM7256EGI192-15 is a high-density EEPROM-based Complex Programmable Logic Device (CPLD) from the MAX 7000 family, delivering 5,000 usable gates and 256 macrocells in a 192-pin Ceramic Pin Grid Array (CPGA) package. It features a 15 ns pin-to-pin propagation delay, a maximum operating frequency of 76.9 MHz, and operates from a single 5 V supply with in-system programmability (ISP) via IEEE 1149.1 JTAG. The device integrates 256 macrocells across 16 logic array blocks (LABs) and provides 12 dedicated input pins plus 192 I/O pins for high I/O-count glue-logic applications. What is a CPLD? A Complex Programmable Logic Device is a non-volatile programmable logic device that sits between simple PAL/GAL devices and high-density FPGAs. It is built from multiple SPLD-style macrocell blocks interconnected by a programmable switch matrix (PIA), giving it predictable timing, deterministic propagation delays, and instant-on behavior from internal EEPROM configuration memory. CPLDs are widely used for address decoding, bus interfacing, state-machine control, and peripheral glue logic where fast, deterministic response and unlimited in-system reprogrammability matter more than raw logic density. Key features of the EPM7256EGI192-15 include: 256 macrocells across 16 LABs, 5,000 usable gates, 15 ns tPD (pin-to-pin), 76.9 MHz fCNT, 192 user I/O pins, 12 dedicated input pins, 5 V in-system programmability via JTAG (IEEE Std 1149.1), and programmable power-saving modes that reduce standby current on unused macrocells. Each macrocell contains a programmable AND/OR array with a flip-flop, allowing registered or combinatorial logic with individually programmable clear, preset, and clock options. Architecturally, the EPM7256EGI192-15 uses Altera's classic MAX 7000E second-generation architecture with enhanced interconnect (the PIA) and per-macrocell EEPROM configuration bits. The 192-CPGA package supports military and industrial temperature grades (the "I" suffix) and provides robust thermal performance for high-reliability embedded systems. The device is supported by Altera's classic MAX+PLUS II and Quartus design flows (legacy support). Typical applications include high-density address decoding in 32-bit/64-bit microprocessor systems, PCI bus interface glue logic, peripheral controllers (UART, DMA, memory controllers), industrial control state machines, and military/aerospace systems requiring radiation-tolerant ceramic-packaged logic. The 5 V core and 5 V tolerant I/Os also make it attractive as a direct replacement for legacy TTL/CMOS 74-series logic in board redesigns. When designing with the EPM7256EGI192-15, observe the 5 V supply requirement carefully - this part is not 3.3 V tolerant on its VCCIO pins. Provide bulk decoupling close to the 192-CPGA socket, and budget for the 16 LAB power pins. The ceramic CPGA package is through-hole and socketed; confirm socket availability before committing the layout. This page synthesizes distributor pricing, drop-in same-family alternatives, and design considerations not found in a single source.
EPM7256EQC160-12 - MAX 7000 CPLD, 256 Macrocells, 12ns, PQFP-160
The Altera (now Intel) EPM7256EQC160-12 is a member of the classic MAX 7000 family of Complex Programmable Logic Devices (CPLDs), offering 256 macrocells, 5,000 usable gates, and 132 user I/O pins in a 160-pin Plastic Quad Flat Pack (PQFP) package with a 12 ns pin-to-pin propagation delay. It operates from a single 5 V supply (4.75 V to 5.25 V) at commercial temperature range (0 °C to 70 °C) and is built on a CMOS EEPROM process that provides non-volatile, instant-on configuration. A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that combines multiple PAL-like logic blocks (called Logic Array Blocks, or LABs) on a single chip, connected through a programmable interconnect matrix. CPLDs sit between simple SPLDs (PAL/GAL) and FPGAs in the programmable logic hierarchy, offering predictable timing, low power, and fast I/O-to-I/O propagation delays. The MAX 7000 family was Altera's second-generation EEPROM-based CPLD architecture and is widely used for glue-logic, bus interfacing, address decoding, and control state-machine replacement. Key features of the EPM7256EQC160-12 include 16 Logic Array Blocks, 256 macrocells, 132 I/O pins, in-system programmability via JTAG, and 5 V tolerant I/O with 3.3 V compatibility. The device delivers up to 90.9 MHz maximum operating frequency with a 12 ns tPD, making it well suited for legacy 5 V system designs. Its non-volatile EEPROM configuration cell means the part retains its logic implementation across power cycles without external boot memory. The MAX 7000 architecture is based on a sum-of-products logic array with macrocell flip-flops, programmable interconnect, and per-pin output enable control. With 16 LABs of 16 macrocells each, the part provides 256 flip-flops for sequential logic. Programmable interconnect delay is fixed (unlike FPGA routing), giving deterministic, predictable timing that simplifies static timing analysis in control and interface designs. Typical applications include 5 V system glue logic, address decoding for microprocessors and DSPs, bus interfacing (ISA, PCI, VME), state-machine replacement, industrial control boards, and telecom infrastructure requiring non-volatile fast-turn-on logic. The 132 I/O count makes it a useful integration point for peripheral bridging in legacy designs. When designing with this part, note that it is part of the mature MAX 7000 family: most PCBs that used it can drop in faster speed grades (-7, -10) or temperature-extended variants (-15I, -20) provided the package and pinout match. Designers should consult the Quartus/MAX+PLUS II support notes for legacy software compatibility. This page combines distributor pricing, drop-in alternative cross-references, and practical design guidance not found in the original datasheet.
EPM7256SQC208-10 - MAX 7000 CPLD 256 Macrocell 10ns | Intel
The Intel (Altera) EPM7256SQC208-10 is a MAX 7000 series Complex Programmable Logic Device (CPLD) with 256 macrocells, 164 user I/O pins, and a 10 ns pin-to-pin propagation delay, housed in a 208-pin Plastic Quad Flat Pack (PQFP) package. It is a 5.0 V in-system programmable device based on Altera's second-generation MAX 7000 EEPROM architecture, offering 5,000 usable gates for glue-logic consolidation and bus-interface applications. A CPLD (Complex Programmable Logic Device) is a programmable logic IC that combines the architectural flexibility of a PAL with the density and register resources of an FPGA. Within the logic IC hierarchy, a CPLD sits between simple programmable logic devices (SPLDs) and field-programmable gate arrays (FPGAs), and is classified as a programmable logic device (PLD) under digital logic ICs. MAX 7000 devices use EEPROM configuration cells, so they retain their programmed state through power cycles without an external configuration memory. The EPM7256SQC208-10 delivers 256 macrocells organized into 16 logic array blocks (LABs), each containing 16 macrocells. Its 10 ns tPD supports system clock rates up to approximately 100 MHz for simple logic paths, while the 164 I/O pins make it suitable for wide bus interfacing. The device operates from a single 5.0 V supply with 3.3 V and 5.0 V tolerant I/O, and supports JTAG (IEEE 1149.1) boundary-scan programming and ISP. Typical applications include address decoding and bus bridging in embedded systems, glue logic for legacy 5 V designs, industrial control interfaces, and prototyping where deterministic timing is required. The 208-pin PQFP package is a standard surface-mount footprint that supports automated assembly. When designing with this CPLD, note that the 10 ns speed grade is the slowest of the MAX 7000 family, so timing-critical paths should be verified against the device's timing model. The EEPROM configuration requires no external boot PROM, simplifying board bring-up compared with SRAM-based FPGAs. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, providing engineers with a single reference for selection and replacement decisions.
EPM7256SQC208-10 - MAX 7000S CPLD, 256 Macrocells, 10ns, 208-PQFP | Intel
The Intel (formerly Altera) EPM7256SQC208-10 is a high-density, high-performance EEPROM-based Complex Programmable Logic Device (CPLD) from the MAX 7000S family, featuring 256 macrocells, 164 user I/O pins, a 10 ns pin-to-pin propagation delay, and a 208-pin PQFP package. A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that combines multiple PAL/GAL-like macrocell blocks with a central interconnect matrix. CPLDs sit in the programmable logic hierarchy between simple SPLDs (single PLDs such as PAL/GAL) and large FPGAs (Field-Programmable Gate Arrays), providing deterministic timing, instant-on operation, and high-logic-density glue logic in a single chip. The MAX 7000S family uses a second-generation MAX architecture with EEPROM process technology, giving engineers in-system programmability (ISP) and 100% tested stuck-fault coverage. The EPM7256SQC208-10 is built around 16 Logic Array Blocks (LABs), each containing 16 macrocells, and delivers up to 5,000 usable gates. Key features include a 10 ns pin-to-pin delay (tPD), counter speeds up to 175.4 MHz, 3.3V or 5V tolerant I/O (with 5V core on the standard -10 variant), in-system programmability via IEEE 1149.1 JTAG, and PCI-SIG compliant I/O for bus interface designs. The 164 I/O pins and JTAG support make it well-suited for bus bridging, address decoding, and state-machine control. The device implements a programmable interconnect matrix (PIA) that routes all LAB outputs to any LAB input, ensuring predictable timing and removing the routing congestion seen in older SPLD architectures. The MAX 7000S architecture also supports programmable power-saving modes per macrocell, which reduces quiescent current when blocks are idle. Typical applications include telecommunications glue logic, industrial control interface bridging, address decoding and bus arbitration in embedded systems, PCI bus interface glue, and replacement of multiple discrete SSI/MSI logic packages. The combination of non-volatile storage, instant-on, and deterministic timing makes it attractive for safety-critical boot logic. A key design tip: the -10 speed grade refers to the slowest of the MAX 7000S speed grades (-6, -7, -10). When designing, ensure that the timing budget (clock period minus tCO, tSU) accommodates the 10 ns propagation delay and that PCI-compliant I/O is only used when the design meets the PCI Local Bus Specification 2.2 timing requirements. This page synthesizes distributor pricing, in-system programmable drop-in alternatives, and practical design notes that go beyond the manufacturer datasheet.
EPM7256SQC208-15 - 256-Macrocell MAX 7000S CPLD, 15ns | Altera
The Altera (Intel) EPM7256SQC208-15 is a high-density, high-performance Complex Programmable Logic Device (CPLD) from the MAX 7000S family, featuring 256 macrocells, 16 logic array blocks (LABs), and 164 user I/O pins in a 208-pin PQFP package. The device delivers a 15 ns pin-to-pin propagation delay and operates from a single 4.75V to 5.25V supply, providing approximately 5,000 usable gates for glue-logic, bus-interface, and state-machine designs. A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that combines multiple PAL-like macrocell blocks with a programmable interconnect matrix. Architecturally, CPLDs sit between simple SPLDs/PALs and larger FPGAs in the programmable logic hierarchy: like SPLDs they offer instant-on, deterministic, flash- or EPROM-backed configuration, but like FPGAs they integrate hundreds to thousands of gates with predictable timing. The MAX 7000S family uses Altera's second-generation MAX architecture with EEPROM-based configuration cells, eliminating the need for an external boot PROM and enabling in-system programmability (ISP) via JTAG. Key features of the EPM7256SQC208-15 include 256 macrocells distributed across 16 LABs, a global clock network, programmable power management with pin-controlled turbo-bit disable for low-power standby, JTAG-compliant boundary-scan (IEEE 1149.1), and four pin-compatible speed grades (7, 10, 12, 15 ns). The 'C' in the part number designates the commercial 0C to +70C operating range; '15' denotes the 15 ns pin-to-pin delay. Typical applications include bus-bridging logic between microprocessors and peripherals, address decoding and chip-select generation in embedded systems, glue logic in telecommunications and networking equipment, industrial control state machines, and replacement of multiple discrete 74-series logic ICs. The 164 user I/Os comfortably support wide data and address buses plus control signals for legacy parallel interfaces. When designing with the EPM7256SQC208-15, ensure 5V tolerance compatibility for the I/O banks, provide proper decoupling on VCCINT/VCCIO pins, and use the Altera MAX+PLUS II or Quartus II design tools for synthesis, fitting, and JTAG programming. Designers migrating to lower-density footprints should consider the speed-grade variants (EPM7256SQC208-10 for 10 ns, EPM7256SQC208-7 for 7 ns) which are pin-compatible drop-in upgrades.
EPM7256SQC208-15N - MAX 7000S CPLD 256 Macrocell | Altera
The Altera EPM7256SQC208-15N is a MAX 7000S-series Complex Programmable Logic Device (CPLD) with 256 macrocells, 164 user I/O pins, and a 15 ns pin-to-pin propagation delay, housed in a 208-pin Plastic Quad Flat Pack (PQFP) package. It operates from a 5 V supply and is a lead-free, RoHS-compliant device. A CPLD (Complex Programmable Logic Device) is a programmable logic IC that combines multiple logic macrocells and a programmable interconnect array on a single die, allowing designers to implement custom combinational and sequential logic without fabricating an ASIC. In the product hierarchy, a CPLD sits between simple PLDs (PAL/GAL) and FPGAs: CPLDs offer deterministic, non-volatile timing and instant-on operation, while FPGAs provide higher logic density. The MAX 7000S family is based on Altera's second-generation MAX architecture, using EEPROM configuration for non-volatile operation. Key features of the EPM7256SQC208-15N include 256 macrocells, 164 I/O pins, 5 V core operation, and a 15 ns maximum pin-to-pin delay (speed grade -15). The device supports in-system programmability (ISP) via the IEEE 1149.1 JTAG boundary-scan interface, enabling field upgrades without removing the device from the board. Its 208-pin PQFP package provides ample I/O for bus-interface, glue-logic, and state-machine applications. The MAX 7000S architecture uses a programmable interconnect array (PIA) to route signals between logic array blocks (LABs), each containing 16 macrocells. This architecture delivers predictable timing independent of routing, a critical advantage over SRAM-based FPGAs in deterministic control applications. The EEPROM configuration retains logic after power-down, eliminating external configuration memory. Typical applications include PCI bus interfaces, ISA-to-PCI bridges, DMA controllers, state machines for industrial automation, and glue logic replacing discrete 74-series TTL. The 164 I/O pins and 256 macrocells make it suitable for medium-complexity designs that would otherwise require dozens of discrete logic packages. When designing with this device, ensure the 5 V supply is well-decoupled with 0.1 uF ceramic capacitors on every VCC pin, and reserve JTAG pins (TCK, TMS, TDI, TDO) for programming and boundary-scan testing. The 15 ns speed grade limits maximum system clock frequency; for higher-speed designs, consider the -10 or -7 speed grades. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, providing engineers with a single reference for selection, replacement, and layout decisions.
EPM7256SQC208-7 - 256 Macrocell 5V CPLD | Altera | 208-PQFP
The Altera EPM7256SQC208-7 is a MAX 7000S-family Complex Programmable Logic Device (CPLD) offering 256 macrocells, 164 user I/O pins, and 5,000 usable gates with a 7.5 ns pin-to-pin propagation delay, housed in a 208-pin Plastic Quad Flat Pack (PQFP) package. It operates from a 5.0 V supply and delivers a maximum operating frequency of 128.2 MHz. A CPLD (Complex Programmable Logic Device) is a programmable logic IC built from an array of macrocells connected by a programmable interconnect matrix. Unlike an FPGA, which uses fine-grained lookup-table logic and volatile SRAM configuration, a CPLD uses non-volatile EEPROM cells and coarse-grained product-term logic, giving deterministic timing, instant-on operation, and high immunity to single-event upsets. In the logic hierarchy, a CPLD sits between discrete glue logic and full FPGAs: CPLD -> programmable logic device (PLD) -> digital logic IC -> semiconductor. The MAX 7000S architecture is based on EEPROM cells, so the EPM7256SQC208-7 retains its configuration without an external boot device and is in-system programmable (ISP) through the IEEE 1149.1 JTAG interface. Each macrocell provides programmable flip-flops, product-term logic, and I/O control, allowing the device to implement address decoding, bus bridging, state machines, and glue logic with fixed, predictable propagation delays. Key specifications include 256 macrocells, 164 I/O pins, 5,000 usable gates, 7.5 ns tPD, 128.2 MHz fMAX, and 5.0 V VCC operation with 3.3 V-compatible I/O options. The 208-pin PQFP package measures 28 x 28 mm with 0.5 mm lead pitch and is rated for commercial temperature operation. Typical applications include PCI and ISA bus interface logic, address decoding and chip-select generation, DSP and microcontroller glue logic, industrial control backplanes, and legacy system replacement where 5 V logic levels and deterministic timing are required. When designing with this device, note that the MAX 7000S family is a mature, non-volatile 5 V CPLD family; verify lifecycle status and consider pin-compatible MAX 7000S speed-grade variants or MAX 7000B/7000A family members before committing to new production. This page synthesizes distributor availability, drop-in speed-grade alternatives, and practical design notes not found in the manufacturer datasheet.
EPM7256SQC208-7N - MAX 7000S CPLD 256 Macrocell | Altera
The Altera EPM7256SQC208-7N is a MAX 7000S-family Complex Programmable Logic Device (CPLD) offering 256 macrocells, 5,000 usable gates, and 164 user I/O pins, with a 7.5 ns pin-to-pin propagation delay (speed grade -7) and a maximum operating frequency of 128.2 MHz, housed in a 208-pin Plastic Quad Flat Pack (PQFP) package. It operates from a 5 V supply and uses CMOS EEPROM technology for non-volatile configuration. A CPLD (Complex Programmable Logic Device) is a programmable logic IC that combines multiple programmable logic array blocks and macrocells into a single chip, allowing designers to implement custom combinational and sequential logic without fabricating an ASIC. In the broader hierarchy, a CPLD sits between simple programmable logic devices (SPLDs/PALs) and FPGAs, offering deterministic timing, non-volatile configuration, and instant-on operation - characteristics that make it ideal for glue logic, bus interfacing, and control-path functions in embedded systems. The MAX 7000S architecture is built around Logic Array Blocks (LABs) containing 16 macrocells each, interconnected by a programmable interconnect array (PIA). Each macrocell provides a flip-flop with programmable clock, clear, and preset, plus I/O control for tri-state, open-drain, and slew-rate settings. The EPM7256S provides 256 macrocells across 16 LABs, delivering 5,000 usable gates for moderate-complexity designs. Key differentiators include its 7.5 ns pin-to-pin delay (the fastest -7 speed grade in the MAX 7000S family), 128.2 MHz maximum frequency, and 164 I/O pins in a 208-pin PQFP. The device supports in-system programmability (ISP) via the IEEE 1149.1 JTAG boundary-scan interface, enabling field upgrades without removing the part from the board. The EEPROM-based configuration is non-volatile, so no external configuration memory is required - a significant advantage over SRAM-based FPGAs. Typical applications include PCI bus interfacing, ISA/VME bus glue logic, DSP/processor peripheral expansion, industrial control state machines, and telecommunications line-card control. The 5 V tolerant I/O and 3.3 V/5 V mixed-voltage operation make it suitable for legacy and mixed-voltage systems. When designing with the EPM7256SQC208-7N, ensure adequate decoupling on each VCC pin and provide a clean JTAG chain for ISP. The 208-pin PQFP requires careful PCB layout for signal integrity at 128 MHz. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.