FPGA & CPLD
製品 (6666)
EPF81500AQC240-2 - FLEX 8000 FPGA 1296 LE 240-BFQFP | Altera
The Intel (Altera) EPF81500AQC240-2 is a member of the FLEX 8000 family of Field Programmable Gate Arrays (FPGAs), delivering 1,296 logic elements across 162 Logic Array Blocks (LABs) with 181 user I/Os, housed in a 240-pin BFQFP (QFP) package. Operating from a 4.75 V to 5.25 V supply, the EPF81500AQC240-2 integrates SRAM-based configuration memory, fine-grained logic, and continuous interconnect routing, packaged as a commercial-grade (speed grade -2) device for general-purpose digital logic prototyping. A Field Programmable Gate Array (FPGA) is a semiconductor integrated circuit that can be electrically reconfigured after manufacture to implement arbitrary digital logic functions. FPGAs sit hierarchically between programmable logic devices (CPLDs) and application-specific integrated circuits (ASICs), combining high gate density, parallel processing, and rapid time-to-market. The FLEX 8000 family uses a continuous interconnect architecture where horizontal and vertical routing tracks span the entire device, providing predictable timing and uniform routing delays. Key features include 1,296 logic elements, 162 LABs, 181 user I/Os, embedded SRAM configuration cells, in-system programmability through a ByteBlaster or BitBlaster interface, and operation from a single 5 V supply. The device supports JTAG boundary-scan testing (IEEE 1149.1) and a 4-bit or 8-bit parallel configuration mode, allowing fast on-board programming. Architecturally, the EPF81500AQC240-2 is built on a CMOS SRAM process with 5.0 V tolerant I/O cells. Each LAB contains eight Logic Elements (LEs) consisting of a 4-input look-up table, a programmable flip-flop, and dedicated carry and cascade chains for fast arithmetic and wide fan-in operations. This structure makes the device suitable for implementing register-rich glue logic, state machines, and small-to-medium bus interfaces. Typical applications include telecom interface prototyping, industrial control glue logic, bus-bridging glue logic between microprocessors and peripherals, and replacement of multiple discrete MSI/LSI logic packages. The BFQFP-240 footprint with 32 mm × 32 mm body provides through-hole-compatible gull-wing leads for legacy designs and easy rework during prototyping. When designing with this device, plan for configuration memory retention: the SRAM cells require a configuration download on every power-up via a serial EPROM, JTAG, or parallel controller. The 5 V supply rail requires proper decoupling with 0.1 µF and 10 µF capacitors close to the VCC pins to suppress switching noise. This page synthesizes distributor pricing from DigiKey, Mouser, Heisener, and Octopart, together with drop-in same-brand FLEX 8000 variants, and practical design notes not collated on any single manufacturer page.
EPF81500AQC240-2N - FLEX 8000 FPGA 16K Gates 240-PQFP | Altera
The Altera (Intel) EPF81500AQC240-2N is a member of the FLEX 8000 family of high-density CMOS programmable logic devices, providing 16,000 usable gates, 1,296 logic cells, and 1,500 registers in a 240-pin Plastic Quad Flat Pack (PQFP) measuring 32 x 32 mm. Operating from a 4.75 V to 5.25 V single supply with a typical internal core voltage derived on-chip, this device delivers up to 181 user I/O pins with a propagation delay of approximately 1.7 ns, making it suitable for high-density glue logic, bus interfacing, and state-machine intensive designs. A Field Programmable Gate Array (FPGA) is a semiconductor device built around an array of configurable logic blocks (CLBs), programmable interconnects, and I/O cells that engineers can re-program after manufacture to implement custom digital circuits. FPGAs sit in the broader taxonomy of programmable logic devices (PLDs) between simple programmable array logic (PAL/GAL) and complex programmable logic devices (CPLDs), and are commonly used to accelerate digital signal processing, implement glue logic, prototype ASICs, and host soft processor cores. The FLEX 8000 family specifically pioneered the look-up-table based architecture that informed later Altera device families. Key features of the EPF81500AQC240-2N include 16K usable gates with 1,296 logic elements (LEs), 181 maximum user I/O pins, 0.42 micrometer CMOS process technology, and a maximum toggle frequency of approximately 125 MHz. The device integrates in-system programmable configuration memory, JTAG boundary-scan support per IEEE Std 1149.1, and on-chip logic for efficient state machine and arithmetic logic unit implementation. The 240-BFQFP package exposes a generous number of I/O pins for medium-to-large peripheral integration. From an architectural standpoint, the FLEX 8000 series uses a continuous, high-performance FastTrack interconnect fabric linking embedded array blocks (EABs) and logic array blocks (LABs). Each LAB contains multiple logic elements with a four-input look-up table, programmable register, and dedicated carry chain, while EABs provide up to 2,048 bits of dual-port RAM or ROM, enabling the device to absorb small FIFOs, ROM look-up tables, and arithmetic functions without external memory. This combined logic-plus-memory architecture differentiates FLEX 8000 from pure-CPLD architectures that are optimized for glue logic only. Typical applications for the EPF81500AQC240-2N include telecommunications line-card controllers, peripheral bridging in legacy industrial systems, custom microcontroller peripherals, glue logic between microprocessors and memory, and prototype ASIC emulation. Designers continue to specify FLEX 8000 devices in long-lifecycle systems such as industrial automation controllers, military/aerospace subsystems, and replacement of end-of-life ASICs where modern FPGA families are oversized or incompatible. When designing with the EPF81500AQC240-2N, ensure that the 5 V supply is well decoupled with 0.1 microfarad and 10 microfarad capacitors placed close to the device VCC pins. The 240-pin PQFP package has substantial lead inductance, so signal integrity on high-speed clocks should be validated with IBIS or SPICE simulation. Configuration data is typically loaded from a serial EPROM using the dedicated configuration port, and JTAG programming per IEEE 1149.1 is supported. This page synthesizes distributor pricing, exact-spec match alternatives in the FLEX 8000 family, and practical design notes that go beyond the information in the manufacturer datasheet.
EPF81500AQC240-3 - FLEX 8000 FPGA 16K Gates 240-PQFP | Altera
The Altera (Intel) EPF81500AQC240-3 is a member of the FLEX 8000 family of CMOS SRAM-based Field Programmable Gate Arrays (FPGAs), delivering up to 16,000 usable gates and 1,500 registers in a 240-pin PQFP package. It features 181 user I/Os and 162 Logic Array Blocks (LABs), configured at system power-up from an industry-standard parallel EPROM, an Altera EPC1/EPC1064/EPC1213/EPC1441 serial configuration device, or a system controller. An FPGA (Field Programmable Gate Array) is a type of programmable logic device (PLD) that combines the high integration of a gate array with the flexibility of in-system reprogrammability. Within the broader semiconductor taxonomy, an FPGA sits below custom ASICs (higher NRE cost, lower unit cost) and above discrete glue logic, occupying the niche of high-density register-rich logic with fast design iteration. The FLEX 8000 series in particular is known for its low-cost, register-rich architecture targeting system-level integration. Key features include 5V CMOS operation (4.75V to 5.25V supply), 1296 logic elements, 1.7 ns propagation delay, and a 240-pin PQFP (also described as 240-BFQFP) package measuring 32x32 mm. The device is specified for commercial operating temperature range (0 to 70 C) and uses SRAM configuration cells that must be reloaded on every power-up, enabling unlimited re-programmability but requiring an external configuration memory. The EPF81500AQC240-3 is built on a 0.42 um CMOS SRAM process with Altera's classic 4-input look-up table (LUT) logic element and continuous FastTrack interconnect. The 162 LABs each contain 8 logic elements (LEs), providing register-rich density for state machines, datapath control, and bus interfacing. Architecture supports JTAG boundary-scan testing and PCI-compliant I/O for bus interface applications. Typical applications include telecom line cards, industrial control logic, PCI bus interface glue logic, glue-logic consolidation around microprocessors, and ASIC prototyping for designs up to 16K gates. Its 181 user I/Os and PQFP package make it suitable for systems needing high pin count without BGA complexity. When designing with the EPF81500AQC240-3, note that SRAM-based configuration means the device loses its configuration on power-down - a boot PROM or system controller must reload it on every reset. The 240-pin PQFP package requires careful PCB layout for the high pin count and is best suited for designs migrating from 5V legacy ASICs to programmable logic. This page synthesizes distributor pricing, same-family drop-in alternatives from the FLEX 8000 series, and practical design notes not consolidated in any single manufacturer datasheet.
EPF81500AQC240-4 - FLEX 8000 FPGA, 16K Gates, 240-PQFP | Altera
The Altera (Intel) EPF81500AQC240-4 is a member of the FLEX 8000 programmable logic device family, offering 16,000 usable gates, 1,296 logic elements, and 181 user I/O pins in a 240-pin Plastic Quad Flat Pack (PQFP / BFQFP) package. The device is fabricated on a 0.42 µm CMOS SRAM-based process and operates from a 5 V supply (with MultiVolt I/O supporting 3.3 V or 5.0 V interface levels), reaching system speeds up to 125 MHz with typical logic delays around 4.9 ns and pin-to-pin propagation of approximately 1.7 ns. An FPGA (Field-Programmable Gate Array) is a semiconductor device built around an array of configurable logic blocks (CLBs), programmable interconnect, and I/O cells, all defined by SRAM configuration bits loaded at power-up. Within the programmable logic hierarchy, an FPGA sits above CPLDs (which use non-volatile EEPROM/flash configuration and have lower density) and below fixed-function ASICs (which offer higher density at the cost of no reconfigurability). FPGAs bridge prototyping and production: they deliver ASIC-class integration with mask-change-free design revisions, making them indispensable for telecom, industrial control, and DSP pipelines. Key features include 1,296 logic cells, up to 16,000 usable gates, four phase-locked loop (PLL)-style clock networks via the FLEX 8000 row/column architecture, JTAG-based boundary-scan testing, MultiVolt I/O for mixed-voltage buses, and SRAM configuration that supports parallel EPROM, serial EEPROM (EPC1, EPC1064, EPC1213, EPC1441), or microcontroller loading. The -4 speed grade indicates a faster bin than the -3, -2, or -1 grades. The FLEX 8000 architecture combines a fine-grained logic element (LE) array with continuous routing channels and a predictable delay model, which simplifies static timing closure. The device is built on a 0.42 µm five-layer metal CMOS process that integrates configuration SRAM, logic, and I/O on a single die, eliminating the need for external configuration logic beyond the boot EEPROM. Typical applications for the EPF81500AQC240-4 include telecommunications line-card glue logic, industrial control and factory automation state machines, DSP preprocessing pipelines, legacy PCI bus bridges, and instrumentation front-ends. The wide 240-pin footprint provides ample I/O for parallel buses and SRAM/DRAM interfaces. When designing with this part, engineers should select an EPC-series configuration device to match the FLEX 8000 serial/parallel boot protocol, leave guard bands around all 181 I/O pins to accommodate signal integrity on parallel buses, and confirm the -4 speed grade against downstream timing budgets (a -3 or -2 grade may suffice if 125 MHz is not required). This page consolidates distributor pricing, verified FLEX 8000 family specifications, drop-in same-package alternatives, and design considerations not found in the original datasheet alone.
EPF81500ARC240-2 - 16K Gates 240-Pin FPGA | Intel / Altera
The Intel / Altera EPF81500ARC240-2 is a member of the legacy FLEX 8000 FPGA family, delivering up to 16,000 usable gates and 1,500 registers in a 240-pin RQFP (240-BFQFP Exposed Pad) surface-mount package. Built on a 0.42 µm CMOS process, the device provides 181 user I/O pins, 1,296 logic elements, and is rated for operation at 5 V across the commercial 0 °C to 70 °C temperature range. It is part of the FLEX 8000 series, which historically served as a low-cost, high-density, register-rich programmable logic platform. What is an FPGA? An FPGA (Field-Programmable Gate Array) is a type of integrated circuit whose logic function is defined by the customer after manufacturing rather than at the foundry. FPGAs sit within the broader category of programmable logic devices (PLDs), alongside CPLDs, and occupy the role of high-density, fine-grained, SRAM- or antifuse-based reconfigurable logic between discrete glue logic and a fully custom ASIC. The FLEX 8000 family belongs to the early-1990s generation of SRAM-based CMOS FPGAs that pioneered in-circuit reconfigurability for telecommunications, industrial control, and glue-logic consolidation. Key features include in-circuit reconfigurability (ICR) via external configuration devices or intelligent controllers, support for Altera's MAX+PLUS II development environment, VHDL and Verilog HDL design entry, and integrated synthesis, simulation, and timing analysis tooling. The part supports the 5 V I/O standard typical of its era and provides a high ratio of registers to combinatorial logic that makes it well suited to state-machine and pipeline applications. The 240-pin RQFP Exposed Pad package provides a large pin count sufficient for 181 user I/Os while remaining compatible with conventional surface-mount assembly. The exposed pad enhances thermal performance for sustained operation in industrial enclosures with moderate airflow. Typical applications include telecommunications line-card glue logic, industrial control and instrumentation, legacy peripheral interfaces, bus bridges, and state-machine controllers. Engineers typically select the EPF81500ARC240-2 when maintaining or replicating a long-lifecycle 5 V system where the FLEX 8000 toolchain is already qualified. When designing with this part, note that the FLEX 8000 family is mature and approaching end-of-life; verify long-term availability with Intel / Altera authorized distributors and plan a migration path to a Cyclone-class device for new designs. This page synthesizes distributor pricing, drop-in family alternatives, lifecycle status, and design considerations not found in any single manufacturer datasheet.
EPF81500ARC240-2A - 16K-Gate FLEX 8000 FPGA | Intel (Altera) | 240-RQFP
The Intel (Altera) EPF81500ARC240-2A is a member of the FLEX 8000 family of register-rich, high-density CMOS programmable logic devices (PLDs), delivering up to 16,000 usable gates and 1,500 logic registers in a 240-pin RQFP (BFQFP with exposed pad) package. Built on a 0.42 umm CMOS SRAM process, it provides in-circuit reconfigurability (ICR) through external configuration devices or an intelligent host controller, allowing designers to update logic in-system without removing the device. A Field Programmable Gate Array (FPGA) is a type of integrated circuit that can be configured by the customer or designer after manufacturing to implement custom digital logic. FPGAs sit within the broader semiconductor hierarchy as reconfigurable logic -> programmable logic device (PLD) -> logic IC -> integrated circuit. The FLEX 8000 family was designed to integrate multiple 32-bit buses into a single device, making it suitable for glue-logic, bus-bridging, and high-density state-machine implementations in telecom, industrial, and computing systems. Key features of the EPF81500ARC240-2A include 1,296 logic elements (LEs), 181 user I/O pins, and system-level support for in-circuit reconfigurability through industry-standard parallel EPROM or Altera serial configuration devices (EPC1, EPC1213, EPC1064, EPC1441). Operating from a 5V supply, the device achieves a typical internal performance of approximately 125 MHz. The 240-pin BFQFP package with exposed pad provides a robust thermal path for high-density designs. The architecture combines a fine-grained logic element array with continuous FastTrack interconnect routing, enabling predictable timing and high logic utilization. Multiple Logic Array Blocks (LABs) are interconnected via row and column channels, and each LE contains a 4-input look-up table (LUT), a programmable register, and dedicated carry and cascade chains for arithmetic and wide functions. Typical applications include telecommunications bridging, industrial control glue logic, high-density state machines, and legacy system upgrades where multiple TTL/CMOS devices can be consolidated into a single FLEX 8000 FPGA. The high pin count and exposed pad also suit high-pin-count applications such as multi-bus integration. When designing with this device, ensure correct configuration mode (serial vs parallel) and proper power-up sequencing of VCCINT and VCCIO rails. The exposed pad of the 240-RQFP must be soldered to a sufficiently large copper pour for thermal dissipation, especially when many I/O are switching simultaneously. This page synthesizes distributor availability, parametric data, and drop-in alternatives to assist with sourcing and replacement decisions not available on a single datasheet.
EPF81500ARC240-3 - FLEX 8000 FPGA 16K Gates 240-RQFP | Intel
The Intel (formerly Altera) EPF81500ARC240-3 is a member of the FLEX 8000 family of CMOS SRAM-based Field-Programmable Gate Arrays, delivering up to 16,000 usable gates and 1,500 registers in a 240-pin RQFP (240-BFQFP Exposed Pad) surface-mount package. Per the manufacturer datasheet, the device contains 1,296 logic cells, 181 user I/O pins, and is fabricated on a 0.42 µm CMOS process. The "-3" speed grade indicates a standard performance bin targeting a maximum internal clock frequency of approximately 125 MHz in the FLEX 8000 family. An FPGA (Field-Programmable Gate Array) is a programmable logic device that combines the high integration of a gate array with the design flexibility of in-circuit reconfigurability. Within the broader semiconductor hierarchy, an FPGA sits under programmable logic, alongside CPLDs, and above fixed-function ASICs in design flexibility. The FLEX 8000 family occupies a unique position as one of the first register-rich, high-density SRAM-based PLD families designed for system-level integration with features such as in-circuit reconfigurability (ICR), multi-volt I/O support, and JTAG boundary-scan testing. Key features of the EPF81500ARC240-3 include 16,000 usable gates, 1,500 flip-flops, embedded SRAM for fast on-chip memory, and continuous FastTrack interconnect routing. The device operates from a 5V core supply and supports 3.3V and 5V I/O standards through its multi-volt interface. A 240-pin RQFP package with exposed thermal pad supports high-I/O-count designs in industrial, telecom, and consumer applications. According to the Flex 8000 Device Family datasheet, configuration is performed at system power-up using industry-standard parallel EPROMs, Altera serial configuration devices (EPC1, EPC1213, EPC1064, EPC1441), or a system controller. Typical applications include industrial automation controllers, telecommunications line cards, glue-logic consolidation in legacy 5V systems, and prototyping platforms for ASIC migration. The exposed thermal pad enables reliable operation at extended junction temperatures when properly soldered to a PCB thermal land pattern. When designing with this device, ensure adequate decoupling on the VCCINT and VCCIO rails and follow Altera's configuration schematic recommendations to prevent partial configuration states at power-up.
EPF81500ARC240-4 - 16K Gates Flex 8000 FPGA | Intel | 240-RQFP
The Intel (formerly Altera) EPF81500ARC240-4 is a high-density member of the Flex 8000 family of CMOS programmable logic devices, delivering up to 16,000 usable gates and 1,500 registers in a 240-pin RQFP package. Built on a 0.42 µm CMOS process and operating from a 5 V supply, this -4 speed-grade device is rated for system-level frequencies up to 125 MHz, making it suitable for glue-logic, bus-interface, and high-volume control-plane designs. A Field Programmable Gate Array (FPGA) is a semiconductor integrated circuit whose logic fabric, interconnect, and I/O blocks are configured after manufacturing by loading a user-defined bitstream. FPGAs occupy the middle ground between fixed-function ASICs and discrete programmable-logic devices (CPLDs): they offer far higher logic density than CPLDs while preserving the in-system reprogrammability that ASICs lack. Within the broader semiconductor taxonomy, an FPGA sits under Programmable Logic -> Programmable Devices -> Logic ICs -> Integrated Circuits. Key features of the EPF81500ARC240-4 include 181 user I/O pins, 1,296 logic elements (cells), in-circuit reconfigurability (ICR) via external configuration devices, JTAG boundary-scan support (IEEE Std 1149.1), and dual-port SRAM-based configuration memory. The device also provides built-in PCI compliance, Multiply/Accumulate (MAC) blocks for DSP-like operations, and a fast track interconnect that shortens critical paths between logic-array blocks (LABs). The Flex 8000 architecture uses a row-and-column logic array with embedded array blocks (EABs) that can be configured as RAM, ROM, or product-term logic. This hybrid approach lets designers implement wide datapath functions alongside random logic, which is uncommon in CPLDs of the same era. The -4 speed grade is the slowest of the Flex 8000 family, trading timing margin for cost and power reduction in non-timing-critical applications. Typical applications include PCI bus bridges, peripheral controllers, telecommunications line cards, industrial automation controllers, and legacy ASIC replacement in long-lifecycle equipment where the design must remain in production for many years. When designing with this part, note that the 5 V supply voltage is unusual in modern FPGA designs and must be paired with 5 V-tolerant peripherals. The RQFP-240 footprint is large by modern standards (32 mm × 32 mm body), and PCB layout must preserve the exposed thermal pad for heat spreading. This page synthesizes distributor pricing, drop-in same-family variants, and practical design notes not found in the standalone manufacturer datasheet.
EPF81500ARC240-4N - 16K-Gate FLEX 8000 FPGA, 240-RQFP | Altera
Altera EPF81500ARC240-4N is a 16,000-gate CMOS SRAM-based Field-Programmable Gate Array from the FLEX 8000 family, housed in a 240-pin RQFP (Quad Flat Pack) package and specified for commercial 0C to 70C operation. The device integrates 1,296 logic elements (LEs) and 1,500 registers, supports up to 181 user I/O, and runs on a 5V supply (4.75V min, 5.25V max). The -4 speed grade delivers a propagation delay of approximately 1.9 ns and an internal counter frequency up to 125 MHz on 0.42 um CMOS process technology. A Field-Programmable Gate Array (FPGA) is a type of programmable logic device (PLD) that combines the density of gate arrays with user-programmable interconnects and logic. The FLEX 8000 family sits in the hierarchy: FPGA -> programmable logic device (PLD) -> logic IC -> integrated circuit -> semiconductor. FPGAs are configured at system power-up from an industry-standard parallel EPROM, an Altera configuration device (EPC1, EPC1213, EPC1064, EPC1441), or a system controller, which loads the SRAM configuration bits that define every logic block, I/O pin, and routing switch. Key features include in-circuit reconfigurability (ICR) allowing the device to be re-programmed on the board without removing the chip, configurable I/O standards supporting both 3.3V and 5V interfaces, multiVolt I/O pins for mixed-voltage systems, 181 maximum user I/O pins, and JTAG-based boundary-scan test support per IEEE 1149.1. The RQFP-240 package provides a JEDEC code of S-PQFP-G240 and measures 32 mm x 32 mm, with 177 user output pins organized around the periphery. Architecturally, FLEX 8000 devices combine Logic Array Blocks (LABs) with FastTrack interconnect, FastInput registers, and dedicated carry chains for arithmetic. The 5V VCCINT and multi-voltage VCCIO pins allow the core and I/O banks to run at independent supplies, and the SRAM cells require configuration on every power-up, which is why FLEX 8000 needs a separate boot PROM or controller. Typical applications for the EPF81500ARC240-4N include glue logic replacement, industrial control buses, telecommunications backplanes, peripheral controllers, and prototype ASIC emulation. It is also used in test and measurement front-ends, video processing pipelines, and legacy 5V systems where modern sub-3.3V FPGAs are not pin-compatible. The 240-pin RQFP is the largest package option for the EPF81500 die, maximizing I/O count for bus-intensive designs. When designing with this part, plan for a configuration source (EPC1/EPC1441 or microcontroller) and decoupling on every VCC/VCCIO pin. The 240-RQFP package has moderate thermal resistance, so an inner copper ground plane on a 4-layer PCB is recommended for sustained high toggle rates. This page synthesizes distributor pricing, FLEX 8000 family drop-in alternatives, and practical design notes not found in the original datasheet.
EPF81500ARC304-2 - FLEX 8000 FPGA 16K Gates 304-BFQFP | Intel
The Intel EPF81500ARC304-2 is a FLEX 8000 family Field Programmable Gate Array (FPGA) IC offering 16,000 usable gates, 1,296 logic cells (logic elements), and 208 user I/O pins, housed in a 304-pin BFQFP (RQFP) package. The device is fabricated on a 0.42 µm CMOS SRAM process with 5 V core supply and supports system speeds up to 125 MHz. As a member of the FLEX 8000 register-rich PLD family, it provides 1,500 flip-flop-based registers and an interconnect fabric optimized for high fan-out and predictable timing. A Field Programmable Gate Array (FPGA) is a type of integrated circuit containing an array of configurable logic blocks (CLBs), programmable interconnect, and programmable I/O cells that engineers can wire to implement arbitrary digital logic. In the system hierarchy, FPGAs sit between fixed-function ASICs (lower flexibility, lower NRE) and CPLDs (lower density, non-volatile) and are widely used as glue logic, accelerator blocks, and prototyping vehicles. The FLEX 8000 family, in particular, is a register-rich SRAM-based architecture suitable for state machines, datapath control, and bus interfacing where deterministic register-to-register timing is required. Key features of the EPF81500ARC304-2 include in-circuit reconfigurability (ICR) via an external serial or parallel EPROM configuration device (EPC1, EPC1064, EPC1213, EPC1441), 304-pin BFQFP package with 208 user I/Os for high pin-count glue-logic and bus-interface designs, 5 V tolerant I/O with PCI-compliant drive options, JTAG-based boundary-scan test support, and built-in MAX+PLUS II toolchain support for VHDL, Verilog, and waveform design entry. The device is fully static and operates across the commercial temperature range. Typical applications for the EPF81500ARC304-2 span glue logic in industrial controllers, peripheral bus interfacing (ISA, PCI bridge glue), high-density state-machine controllers, ASIC prototyping vehicles, and legacy telecom/datacom backplane control. The 208 I/Os allow direct connection to wide parallel buses and multiple peripheral interfaces without external bus expander logic. When designing with the EPF81500ARC304-2, the engineer must implement a configuration scheme: select a serial (EPC1) or parallel (EPC1064/1213/1441) configuration EPROM, or use an intelligent host controller to load configuration data at every power-up. ICR allows in-field reconfiguration without powering down the board, a defining FLEX 8000 advantage over older one-time-programmable PLDs. This page synthesizes distributor pricing across DigiKey, Mouser, Heisener, Xecor, and Wolfchip; drop-in and pin-compatible variants of the same FLEX 8000 family; and practical design notes on configuration memory, JTAG, and 5V I/O termination that are not consolidated in the manufacturer datasheet.
EPF81500ARC304-3 - FLEX 8000 FPGA 16K Gates 304-RQFP | Intel
The Intel (formerly Altera) EPF81500ARC304-3 is a member of the FLEX 8000 family of CMOS programmable logic devices, delivering 16,000 usable gates, 1,296 logic elements, and 208 user I/O pins in a 304-pin RQFP (BFQFP) package. It is fabricated on a 0.42 µm EPROM-based process and supports in-circuit reconfigurability (ICR) via external configuration devices or intelligent controllers. A Field Programmable Gate Array (FPGA) is a semiconductor integrated circuit containing an array of configurable logic blocks (CLBs), programmable interconnects, and I/O cells that can be rewired by the designer after manufacture. FPGAs occupy a tier above traditional PLDs (such as PAL/GAL) in the programmable logic hierarchy because they integrate RAM-based or EPROM-based lookup tables, dedicated carry chains, and tri-state bus structures - making them suitable for glue logic, register-intensive state machines, bus interfacing, and medium-complexity datapath designs. The FLEX 8000 family specifically targets high-density, register-rich, low-cost applications where CPLD-style instant-on non-volatility (EPROM process) is preferred over SRAM-based FPGAs. Key features of the EPF81500ARC304-3 include 1,500 flip-flops, a 5 V core supply, 125 MHz internal performance, 208 user I/O pins, and JTAG-based boundary-scan test support. The device is offered in a -3 speed grade, suitable for performance-oriented designs. Its FastTrack continuous interconnect routing provides predictable timing delays regardless of placement. Typical applications include peripheral bus interfacing (PCI, ISA, VME), telecommunications line cards, industrial control systems, and legacy replacement of discrete TTL/MSI logic. The 304-RQFP (BFQFP) package with high I/O count suits designs requiring many bus signals, while the 0.42 µm EPROM process delivers one-time-programmable non-volatile configuration with instant-on behavior at power-up. Designers should note that the EPF81500ARC304-3 is a mature, NRND-era part with limited long-term availability. For new designs, the FLEX 8000 family has been largely superseded by MAX 7000/MAX II CPLDs (lower density) or Cyclone-series SRAM FPGAs (higher density). Existing designs should validate long-term supply before committing to new production runs. This page synthesizes distributor stock levels, datasheet specifications, and same-family alternatives (e.g., EPF81500ARC304-2) sourced from real-time web data - information not consolidated on a single manufacturer page.
EPF81500ARC304-4 - FLEX 8000 FPGA, 16K Gates, 304-RQFP | Altera
The Altera EPF81500ARC304-4 is a member of the FLEX 8000 family of CMOS SRAM-based Field-Programmable Gate Arrays (FPGAs), delivering up to 16,000 usable gates and 1,500 registers in a 304-pin RQFP (40x40 mm) package with 208 user I/O pins. It is built on a 0.42 µm CMOS process and operates from a single 4.75 V to 5.25 V supply, supporting 5.0 V I/O by default with MultiVolt capability on selected packages for 3.3 V mixed-voltage system integration. A Field-Programmable Gate Array (FPGA) is a semiconductor device containing an array of configurable logic blocks (CLBs), programmable interconnects, and I/O cells that can be reconfigured by the end user after manufacture. FPGAs occupy a tier in the digital logic hierarchy above simple PLDs and below fixed-function ASICs, offering high gate density, in-system reconfigurability, and parallel processing capability. The FLEX 8000 architecture sits within this hierarchy as a register-rich, low-cost family optimized for glue logic, bus interfaces, TTL integration, coprocessor functions, and high-speed controllers. Key features include 1,296 logic cells, an in-circuit reconfigurability (ICR) interface that supports external EPC1, EPC1213, EPC1064, and EPC1441 configuration devices, and a maximum internal operating frequency in the 125 MHz class. The 304-RQFP package exposes 208 user I/Os, enabling integration of multiple 32-bit buses and wide data-path manipulation within a single device - a strong fit for DSP pre/post-processing and data transformation pipelines. The SRAM-based configuration memory allows unlimited reconfiguration cycles, supporting prototyping and field-upgrade scenarios. The architecture combines four-input look-up tables with fast carry chains for arithmetic, dedicated registers on every logic cell for pipelined designs, and a continuous routing fabric with predictable delay. MultiVolt I/O permits mixed 3.3 V/5.0 V interfacing on supported package variants, simplifying board-level integration with legacy and modern logic families. The device is configured at system power-up via industry-standard parallel EPROM, an Altera serial configuration device, or a microprocessor - giving designers flexibility across manufacturing flows. Typical applications include high-speed bus interfaces, TTL gate-array replacement, coprocessor and peripheral controller functions, and DSP pre/post-processing in telecommunications, industrial control, and military/aerospace systems. Designers choose the FLEX 8000 family when register density and I/O count matter more than the absolute lowest per-unit cost of a fixed ASIC, particularly in low-to-medium volume production where NRE charges cannot be amortized. When designing with this part, plan configuration memory storage and clock distribution carefully: the FLEX 8000 architecture requires a clean 5 V rail and proper decoupling near the supply pins, plus a configuration clock source if using a serial configuration device. The 304-RQFP package is large (40x40 mm) and requires a substantial PCB footprint, so mechanical layout and thermal vias under the die-attach pad should be considered for high-utilization designs. This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not found in the standalone manufacturer datasheet.
EPF81500ARI240-3 - FLEX 8000 FPGA 16K Gates 240-RQFP | Intel
The Intel (formerly Altera) EPF81500ARI240-3 is a member of the FLEX 8000 programmable logic family, delivering up to 16,000 usable gates, 1,296 logic cells (registers), and 181 user I/O pins in a 240-pin RQFP (Power Quad Flat Pack) package with exposed pad. Built on a 0.42 µm CMOS SRAM process, it operates from a 5 V supply and is rated for a maximum internal clock frequency of 125 MHz. A Field-Programmable Gate Array (FPGA) is a reprogrammable semiconductor device built around an array of configurable logic blocks (CLBs), programmable interconnects, and configurable I/O cells. FPGAs sit within the broader taxonomy of programmable logic devices (PLDs) -> programmable logic -> logic ICs -> integrated circuits, and are widely used to implement glue logic, custom state machines, bus bridges, and DSP datapaths without the cost and lead time of an ASIC. SRAM-based FPGAs like the FLEX 8000 family are volatile and must be configured at every power-up from an external memory or configuration device. Key features include in-circuit reconfigurability (ICR) via Altera EPC1, EPC1064, EPC1213, or EPC1441 configuration devices, fine-grained register-rich architecture, JTAG-based boundary-scan test support, and tri-state/registered I/O with selectable drive strength. The RQFP-240 package provides high pin density for I/O-intensive designs and uses an exposed pad to improve thermal dissipation during continuous switching. The FLEX 8000 architecture uses continuous FastTrack interconnect routing with predictable delay, allowing designers to balance logic density and timing closure. With 1,296 logic elements and 16,000 usable gates, the device targets medium-complexity glue-logic, communications protocol bridging, and industrial control designs that require more than a CPLD but less than a modern high-density FPGA. Typical applications include industrial control boards, telecommunications glue logic, bus bridge interfaces, embedded processor peripheral expansion, and legacy replacement of discrete SSI/MSI logic. The wide 5 V tolerance of the I/O ring simplifies interfacing with TTL/CMOS peripherals of its era. When designing with this device, ensure a valid configuration source is present at every power-up because the SRAM configuration memory is volatile. Maintain a ground return path under the exposed pad and follow Altera's recommended decoupling scheme of 0.1 µF + bulk capacitors placed adjacent to each power pin.
EPF8282ALC84-2 - FLEX 8000 FPGA, 2.5K Gates, 84-PLCC | Intel / Altera
The Intel / Altera EPF8282ALC84-2 is a member of the FLEX 8000 family of CMOS programmable logic devices, offering 2,500 usable gates, 208 logic elements (FFs), and 68 user I/Os in a 84-pin LCC (J-Lead) surface-mount package. Built on a 0.42 micrometer CMOS SRAM-based architecture, it provides low-cost, high-density, register-rich programmable logic for glue-logic integration, bus-interface bridging, and state-machine consolidation in legacy industrial designs. An FPGA (Field-Programmable Gate Array) is a semiconductor integrated circuit containing an array of configurable logic blocks (CLBs), programmable interconnects, and I/O cells that the user can define after manufacture via a configuration bitstream. The FLEX 8000 family sits within the programmable-logic hierarchy as: FPGA -> programmable logic -> logic IC -> integrated circuit. FPGAs differ from CPLDs in offering register-rich, SRAM-based logic optimized for higher density and finer-grained arithmetic, whereas CPLDs are typically non-volatile and better suited to wide combinatorial decode logic. Within the broader PLD market, FPGAs occupy the high-density, high-register-count tier between small CPLDs and ASICs. Key features of the EPF8282ALC84-2 include 26 Logic Array Blocks (LABs), 208 flip-flops, 68 I/O pins, in-circuit reconfigurability (ICR) via external configuration devices (such as the EPC1 or EPC1441), and built-in JTAG (IEEE 1149.1) boundary-scan support. The device operates from a 5.0 V core supply and is offered in a commercial temperature grade. Its SRAM-based fabric requires configuration on every power-up but enables unlimited re-programmability, making it suitable for prototyping and field-upgradable systems. The FLEX 8000 architecture uses a hierarchical interconnect structure with fast row and column channels, providing predictable timing for registered designs. Each LAB contains 8 logic elements, and the 26-LAB array is well suited to 16-bit datapath designs, address decoding, and FIFO controllers. The 84-pin PLCC package with J-leads is a through-hole-friendly surface-mount format that simplifies prototyping on socketed carriers while still supporting reflow assembly. Typical applications include industrial control glue logic, telecommunications line-card glue, military/aerospace retrofit boards (where long-life FLEX 8000 stocks are still maintained), legacy ASIC replacement, bus-bridge logic between microprocessors and peripherals, and state-machine consolidation on multi-board systems. Designers value the FLEX 8000 series for its deterministic timing, JTAG-driven in-system programmability, and abundant third-party toolchain support (MAX+PLUS II, Quartus II legacy support). When designing with this part, note that the FLEX 8000 family is mature and recommended for new designs only when second-source supply and pin-compatible alternatives are required. For new greenfield designs, Intel recommends the MAX 10 or Cyclone IV series. Always include a configuration PROM (EPC1/EPC1441) in the reference schematic, and follow the JTAG chain recommendations in the FLEX 8000 datasheet for multi-device boards. This page synthesizes distributor pricing, same-family drop-in alternatives (including pin-compatible speed grades -2/-3/-4), and practical design notes not consolidated in a single place on the manufacturer datasheet.
EPF8282ALC84-3 - FLEX 8000 FPGA 2.5K Gates 68 I/O 84-PLCC | Altera
The Intel / Altera EPF8282ALC84-3 is a member of the classic FLEX 8000 FPGA family, integrating 2,500 usable gates, 208 logic cells across 26 Logic Array Blocks (LABs), and 68 user I/Os into a single 84-pin Plastic Leaded Chip Carrier (PLCC, J-Lead) package. It is fabricated on a 0.42 µm CMOS process and operates from a 5 V supply with MultiVolt I/O support for 3.3 V or 5.0 V interface levels, enabling direct connection to mixed-voltage buses. Speed grade -3 indicates the production timing bin, balancing propagation delay against power dissipation. A Field Programmable Gate Array (FPGA) is a semiconductor device built around an array of configurable logic blocks (CLBs/LABs) interconnected by a programmable routing fabric, all controlled by SRAM configuration memory. FPGAs sit in the broader taxonomy of programmable logic devices (PLDs), alongside CPLDs and SPLDs, and serve as the prototypal general-purpose hardware-acceleration platform bridging discrete glue logic and full custom ASICs. The FLEX 8000 family is a second-generation Altera SRAM-based architecture that introduced embedded logic-array-block organization and in-circuit reconfigurability (ICR) via the serial configuration EPROM interface. Key features include 2,500 usable gates supporting up to 16,000-gate designs when fully utilized, in-circuit reconfigurability that permits live bitstream updates without powering down the system, a 125 MHz internal performance target suitable for glue-logic and bus-interface functions, MultiVolt I/O for 3.3 V and 5.0 V mixed-voltage designs, and a 5 V core supply. The PLCC-84 J-Lead package is through-hole-compatible and supports socketed programming, which simplifies lab prototyping and field-replaceable upgrades. The EPF8282ALC84-3 is organized as 26 LABs arranged in rows and columns, each LAB containing eight logic cells (LEs) implementing 4-input look-up tables, programmable registers, and a carry chain. FastRow interconnect and column interconnect lines route signals between LABs with predictable delays, simplifying static-timing closure. MultiVolt I/O buffers are individually configurable per pin group, allowing the same die to operate in mixed 5 V/3.3 V boards. Typical applications include industrial bus-interface bridges (PCI, ISA, VME), legacy telecommunications glue logic, ASIC prototyping, replacement of multiple 74-series TTL devices in instrumentation, and educational hardware-acceleration platforms. Its SRAM-based fabric supports live bitstream reload for systems that must change personality in the field. Designers should pair the EPF8282ALC84-3 with a configuration EPROM (such as the Altera EPC1 or EPC2) and observe 5 V supply decoupling guidelines. The MultiVolt I/O feature requires per-bank VCCIO rails that must be tied to either 3.3 V or 5.0 V - mixing within a bank is not supported. This page synthesizes distributor pricing, drop-in FLEX 8000 family alternatives, and design guidance beyond the manufacturer datasheet, including parametric comparison and selection criteria for engineers evaluating legacy Altera SRAM FPGAs.
EPF8282ALC84-4 - 2.5K FLEX 8000 FPGA, 84-PLCC, 5V | Altera
The Altera EPF8282ALC84-4 is a member of the FLEX 8000 family of SRAM-based CMOS Field Programmable Gate Arrays (FPGAs) housed in an 84-pin PLCC (Plastic Leaded Chip Carrier, J-Lead) package. The device integrates 208 logic elements arranged in 26 Logic Array Blocks (LABs) and provides 68 user I/O pins for high-density, register-rich programmable logic designs. It is supplied from a nominal 5V rail (4.75V-5.25V) and operates over the commercial 0C to +70C temperature range. The -4 speed grade reflects the slowest of the FLEX 8000 family grades, providing the longest propagation delay but at the lowest cost. An FPGA (Field-Programmable Gate Array) is a programmable logic device belonging to the broader PLD (Programmable Logic Device) family, which itself falls under digital ICs and semiconductors. FPGAs sit hierarchically above simple PLDs and below ASICs, offering higher logic density than CPLDs while preserving field programmability. The FLEX 8000 series combines the high register count and fine-grained interconnect of an FPGA with features normally associated with mask-programmed gate arrays, including in-circuit reconfigurability (ICR) via SRAM configuration cells. Key features include 2,500 usable gates, 208 logic elements, 26 LABs, and 68 user I/Os. The FLEX 8000 architecture uses CMOS SRAM configuration elements that are loaded at system power-up from an industry-standard parallel EPROM, an Altera serial configuration device (EPC1, EPC1213, EPC1064, or EPC1441), or a system controller. MultiVolt I/O allows the device to interface with mixed-voltage systems supporting 3.3V or 5.0V I/O pin operation across the family. Typical applications include glue logic replacement, bus interface bridging, state-machine and controller implementation, peripheral emulation in legacy industrial systems, and prototyping of larger ASIC designs. The 5V tolerance and PLCC footprint make it well-suited to long-lifecycle industrial and telecom designs where through-hole or socketed assembly is preferred over fine-pitch QFP. Designers should note that the SRAM-based configuration is volatile: the device must be reconfigured at every power-up. PCB layouts must respect the PLCC-84 socket's mechanical constraints and provide a robust configuration source. As a -4 speed-grade part, propagation delay is the longest in the family - consult the FLEX 8000 datasheet for timing margins in time-critical paths.
EPF8282ALC84-4N - FLEX 8000 FPGA 2.5K Gates 84-LCC | Intel / Altera
The Intel / Altera EPF8282ALC84-4N is a member of the FLEX 8000 family of CMOS SRAM-based Field-Programmable Gate Arrays (FPGAs), housed in an 84-pin LCC (J-Lead) package. It provides 2,500 usable gates with 208 logic elements, 68 user I/Os, and a maximum toggle frequency of 125 MHz, making it suitable for glue-logic, bus-interface, and PCI-compliant peripheral designs in commercial-temperature applications. A Field-Programmable Gate Array (FPGA) is a type of integrated circuit that can be configured by the customer after manufacturing to implement arbitrary digital logic. In the broader taxonomy, the EPF8282ALC84-4N sits within programmable logic devices (PLDs) -> CPLD/FPGA hybrid (FLEX 8000 is architecturally an FPGA) -> SRAM-based FPGA -> general-purpose programmable logic -> semiconductor. The FLEX 8000 family was one of Altera's early high-density register-rich FPGA lines, fully compliant with the PCI Local Bus Specification for plug-and-play peripheral designs. Key features include 5.0V VCCIO operation with selectable 3.3V or 5.0V output levels, in-circuit reconfigurability (ICR) via serial configuration devices (EPC1, EPC1064, EPC1213, EPC1441), and built-in JTAG boundary-scan test (IEEE 1149.1). The 0.42 µm CMOS SRAM process provides high integration while the 84-pin LCC (J-Lead) package supports surface-mount assembly with excellent thermal and mechanical characteristics. Four dedicated inputs are reserved for high-fanout synchronous control signals. Architecturally, the device uses Look-Up Table (LUT)-based logic elements arranged in Logic Array Blocks (LABs) with FastTrack interconnect. Configuration data is loaded from an industry-standard parallel EPROM, an Altera serial configuration device, or a system controller at power-up. The FastTrack continuous routing architecture provides predictable timing with delays independent of logic placement, simplifying timing closure in legacy designs. Typical applications include PCI bus interface controllers, peripheral glue logic, register-rich state machines, bus bridges (ISA-to-PCI, microcontroller-to-PCI), and legacy industrial control systems. The high pin-count LCC package allows integration of multiple 32-bit buses into a single device, reducing board space and BOM cost compared to discrete TTL designs. When designing with this part, ensure the configuration scheme (serial vs parallel) and EPC device selection match the bitstream size. The PCI-compliant I/O drivers require careful signal-integrity layout to meet the 33 MHz PCI timing budget, including series-damping resistors and matched trace lengths on the bus. This page synthesizes distributor pricing, drop-in alternatives within the FLEX 8000 family, comparison tables, and practical design notes that go beyond the manufacturer datasheet's typical-application content, giving engineers a single reference for sourcing and designing with this mature legacy FPGA.
EPF8282ALI84-4 - FLEX 8000 FPGA 2.5K Gates | Intel / Altera
The Intel (formerly Altera) EPF8282ALI84-4 is a member of the FLEX 8000 programmable logic family, integrating approximately 2,500 usable gates and 208 logic elements in a 0.42 µm CMOS SRAM-based architecture. It is supplied in an 84-pin PLCC package and operates from a 5 V supply with a -4 speed grade targeting industrial-grade timing closure. Internal logic capacity delivers up to 16,000 usable gates per family specification with register-rich interconnect for synchronous designs. A Field-Programmable Gate Array (FPGA) is a semiconductor device built around an array of configurable logic blocks (CLBs), programmable routing channels, and I/O cells, all controlled by user-loaded SRAM configuration bits. FPGAs sit between discrete logic ICs (74-series glue logic) and ASICs in the design hierarchy: like glue logic they are field-reprogrammable, but unlike ASICs they require no fab cycles, making them ideal for prototyping, low-volume production, and design iteration. The FLEX 8000 family represents one of the early Altera SRAM-based FPGA families, positioned as a register-rich CMOS PLD alternative to mask-programmed gate arrays. Key features of the EPF8282ALI84-4 include 2,500 typical gates (up to 16,000 usable gates per family), 208 logic cells/elements, in-circuit reconfigurability (ICR) via external configuration devices, 5 V core supply, 125 MHz internal performance, and JTAG-based boundary-scan test support. The 84-pin PLCC package provides through-hole compatibility for legacy and ruggedized designs. Architecturally, the FLEX 8000 device employs continuous FastTrack interconnect routing with predictable delay, embedded array blocks (EABs) for memory functions, and a SRAM configuration cell that supports infinite reconfiguration. The -4 speed grade places this part in the slower industrial-spec timing bin suitable for cost-sensitive applications. Typical applications include industrial control logic, glue-logic replacement on legacy 5 V buses, ASIC prototyping, and bridging interfaces between microprocessors and peripherals. The 5 V tolerance makes it a fit for legacy industrial PC/104, VME, and STD bus designs where 3.3 V FPGAs cannot be used. When designing with the EPF8282ALI84-4, ensure the configuration device (EPC2 or compatible) is correctly wired and that the 5 V supply rail stays within ±5 % tolerance during power-up to avoid partial configuration states. JTAG pins (TDI, TDO, TMS, TCK) must be pulled to known logic levels if unused. This page synthesizes distributor stock, lifecycle status, and drop-in alternative information for the EPF8282ALI84-4 that is not aggregated in the manufacturer datasheet alone.
EPF8282ATC100-2 - FLEX 8000 FPGA, 2.5K Gates, 100-TQFP | Intel
The Intel (Altera) EPF8282ATC100-2 is a member of the FLEX 8000 programmable logic family, delivering 2,500 usable gates, 208 logic cells, 26 LABs (Logic Array Blocks), and 78 user I/Os in a 100-pin TQFP package. Fabricated on a 0.42 µm CMOS process, the device operates from a 5 V supply and is rated for the commercial 0 °C to 70 °C temperature range. The "-2" speed grade targets moderate-performance glue-logic and control applications with predictable timing closure. A Field-Programmable Gate Array (FPGA) is a semiconductor integrated circuit that engineers can configure after manufacturing to implement arbitrary digital logic. The FLEX 8000 family sits in the hierarchy: FPGA → programmable logic device (PLD) → logic IC → integrated circuit → semiconductor. FPGAs differ from CPLDs in their distributed SRAM-based configuration memory, which provides higher logic density and register-rich architectures at the cost of requiring external configuration storage on power-up. Key features of the EPF8282ATC100-2 include in-circuit reconfigurability (ICR) via the serial configuration interface, JTAG boundary-scan test support, and a multi-volt I/O interface compatible with 5 V and 3.3 V signalling. The device integrates 282 flip-flops distributed across 26 LABs, supporting registered state machines, counters, and datapath logic. The MAX+PLUS II development system provides VHDL, Verilog HDL, and waveform design entry, synthesis, simulation, and timing analysis for the FLEX 8000 family. The FLEX 8000 architecture is built on a continuous, hierarchical routing fabric with FastTrack interconnect lines spanning the entire device. Each LAB contains 8 logic elements (LEs) with a 4-input look-up table (LUT), programmable register, and carry-chain for arithmetic operations. Dedicated input pins and clock networks support synchronous design patterns common in bus interfacing, peripheral control, and telecommunications glue logic. Typical applications include bus-interface bridging (PCI, ISA, VME), peripheral controllers, telecommunications line-card glue logic, industrial control state machines, and legacy system upgrades where ASIC-equivalent functionality is needed without the NRE cost. The 100-TQFP footprint makes the EPF8282ATC100-2 compatible with through-hole and surface-mount assembly lines that have been validated for the FLEX 8000 family. Designers should verify timing closure with MAX+PLUS II timing analysis and budget sufficient I/O headroom for 5 V tolerance on legacy buses. Because the FLEX 8000 family has been in production for decades, second-source supply remains available from authorized distributors and stocking partners. This page synthesizes distributor pricing, drop-in alternatives from the Site MPN list, and practical design considerations not consolidated on the manufacturer datasheet, helping engineers source pin-compatible replacements for legacy FLEX 8000 designs.
EPF8282ATC100-2W - 2.5K Logic Elements FLEX 8000 FPGA | Altera
The Altera EPF8282ATC100-2W is a member of the FLEX 8000 family of SRAM-based Field Programmable Gate Arrays (FPGAs) housed in a 100-pin TQFP package. It integrates 2,500 typical gates, 282 logic elements, and 78 user I/O pins, with 208 bits of embedded RAM, providing a versatile platform for glue-logic, bus-interface, and state-machine prototyping on legacy 5V-tolerant systems. An FPGA (Field Programmable Gate Array) is a programmable logic device containing an array of configurable logic blocks (CLBs), programmable interconnect, and configurable I/O cells that the user programs after manufacture. FPGAs sit within the broader hierarchy: programmable logic device (PLD) -> logic IC -> integrated circuit -> semiconductor. Compared to older PLDs such as PALs and GALs, FPGAs offer far higher logic density, register-rich architectures, and SRAM or antifuse configuration memory. The FLEX 8000 family uses SRAM configuration, which means the device must be reloaded at every power-up from an external EPROM or an Altera EPC1/EPC1064/EPC1213/EPC1441 configuration device. Key features of the EPF8282ATC100-2W include 2,500 typical gates (5,000 maximum), 282 logic elements, 78 user I/Os, 208 flip-flops, 0.5 micron CMOS SRAM process, 5V tolerant I/O, JTAG boundary-scan support, and an industrial-grade speed grade of -2 (the "W" suffix denotes the wider industrial operating-temperature range). The device supports in-system programmability via the IEEE Std 1149.1 (JTAG) interface and can be cascaded with other FLEX 8000 devices for higher-density designs. The architecture uses four Logic Array Blocks (LABs) per row, with each LAB containing eight Logic Elements (LEs). Each LE consists of a 4-input look-up table, a programmable flip-flop, and dedicated carry and cascade paths. FastTrack Interconnect provides continuous routing rows and columns for predictable timing closure. Typical applications of the EPF8282ATC100-2W include legacy 5V peripheral glue logic, industrial-control state machines, bus-bridging between microprocessor and peripheral buses, prototyping for ASIC emulation, telecom backplane controllers, and military/aerospace systems that still require FLEX 8000 silicon. When designing with this device, ensure a configuration source (EPC1, EPC1064, or parallel EPROM) is present at every power-up, since SRAM cells lose their pattern when VCC drops below the data-retention threshold.
EPF8282ATC100-3 - FLEX 8000 FPGA 2.5K Gates 78 I/O TQFP-100 | Intel
The Intel / Altera EPF8282ATC100-3 is a member of the FLEX 8000 family of CMOS SRAM-based Field Programmable Gate Arrays (FPGAs), delivering 2,500 usable gates, 208 logic cells (LEs), and 78 user I/Os in a 100-pin Thin Quad Flat Pack (TQFP) package. It is built on a 0.42-micron CMOS SRAM process with 5V supply tolerance and operates up to 125 MHz system frequency, supporting -3 speed grade timing. The architecture integrates fast track interconnect, embedded array blocks (EABs), and logic array blocks (LABs) that combine register-rich logic with on-chip RAM. An FPGA (Field Programmable Gate Array) is a type of programmable logic device (PLD) that sits within the broader integrated circuit hierarchy of semiconductor devices. It uses look-up tables, flip-flops, and programmable interconnect to implement arbitrary digital logic, allowing engineers to reconfigure hardware functionality in-circuit via SRAM configuration memory. FPGAs bridge the gap between fixed-function ASICs and discrete logic, offering high integration, fast time-to-market, and in-system reconfigurability. Key features of the EPF8282ATC100-3 include 2,500 usable gates, 208 logic elements, 12,000 typical gates equivalent, 78 I/O pins, multiVolt I/O support for 3.3V/5V mixed-voltage interfacing, in-circuit reconfigurability (ICR), and JTAG boundary-scan test support. The device is configured at system power-up via industry-standard parallel EPROM, Altera serial configuration devices (EPC1, EPC1064, EPC1213, EPC1441), or a microprocessor. The FLEX 8000 architecture employs a segmented fast-track interconnect that links LABs horizontally and vertically with predictable delay, simplifying timing closure. Each EAB provides up to 2 Kbits of dual-port RAM or ROM, useful for FIFO buffers, lookup tables, and DSP datapaths. Designers can implement 32-bit buses and integrate glue logic around microprocessors without external bus drivers. Typical applications include telecommunications switching equipment, industrial control systems, test and measurement instrumentation, glue logic around microprocessors and microcontrollers, peripheral bus interfacing, and legacy embedded system retrofits. The wide I/O count and 5V tolerance make it useful for replacing discrete TTL/CMOS logic on 5V backplanes. When designing with this device, ensure configuration data is available at power-up using a compatible EPC series configuration device or microcontroller-driven configuration. Decoupling capacitors should be placed within 0.5 cm of each VCC pin, and unused I/O pins must be configured as outputs driving ground to minimize switching noise. This page synthesizes distributor pricing, drop-in alternatives, application notes, and design considerations for the EPF8282ATC100-3, supplementing the manufacturer datasheet with engineering guidance and cross-brand equivalents sourced from current distributor data.
EPF8282ATC100-4 - 78 I/O FLEX 8000 FPGA, 100-TQFP | Intel
The Intel (Altera) EPF8282ATC100-4 is a Flex 8000-series Field-Programmable Gate Array (FPGA) with 208 logic cells, 78 user I/Os, and 2,500 usable gates, housed in a 100-pin TQFP (also called LFQFP) commercial-grade plastic surface-mount package. Built on a 5 V CMOS SRAM configuration architecture, the device loads its configuration from an industry-standard parallel EPROM, an Altera EPC1/EPC1064/EPC1213/EPC1441 serial configuration device, or a system controller at power-up. A Field-Programmable Gate Array (FPGA) is a type of programmable logic device (PLD) that combines the high gate density and register-rich architecture of gate arrays with the design flexibility of in-system reprogrammability. FPGAs sit above simple PLDs in the programmable logic hierarchy and below fixed-function ASICs, belonging to the broader family of logic ICs in the semiconductor category. Their role is to provide hardware-level parallel logic that can be reconfigured for glue logic, bus interfacing, state machines, and protocol bridging without fabricating a custom ASIC. Key features of the EPF8282ATC100-4 include 26 Logic Array Blocks (LABs), MultiVolt I/O support for 3.3 V or 5.0 V interface operation, in-circuit reconfigurability (ICR) for field updates without removing the part, and a typical propagation delay suitable for glue-logic and bridge applications up to 125 MHz. The architecture is register-rich, supporting up to 1,500 flip-flops for pipelined designs and synchronous state machines. The FLEX 8000 device architecture supports the MultiVolt I/O feature, which allows devices to interface with mixed-voltage systems. The SRAM-based configuration cells mean the design is volatile - it must be reloaded on every power-up - which is why the device pairs with a configuration EPROM. The 100-pin TQFP package provides 78 usable I/O pins, leaving 22 pins for power, ground, configuration, JTAG, and dedicated functions. Typical applications include industrial glue logic, legacy bus-interface bridges (ISA, PCI bridge buffers), protocol converters, telecommunications control logic, and embedded control systems requiring low-density reconfigurable logic. The 100-pin TQFP footprint is compatible with existing Altera FLEX 8000 design layouts, simplifying retrofit designs. When designing with this device, allocate adequate time for configuration loading from the EPROM at power-up. Decouple all VCC pins with 0.1 uF ceramic capacitors placed as close to the package as possible. The MultiVolt I/O pins must be configured for the correct interface voltage (3.3 V or 5.0 V) before connection to mixed-voltage buses. This page synthesizes distributor pricing, same-brand pin-compatible drop-in alternatives, and practical design notes that go beyond the manufacturer datasheet, with parametric comparison against the FLEX 8000 family siblings and form-fit-function (FFF) replacements.
EPF8282ATC100-4N - FLEX 8000 FPGA 2.5K Gates 100-TQFP | Altera
The Altera (Intel) EPF8282ATC100-4N is a FLEX 8000 family Field Programmable Gate Array (FPGA) integrating 2,500 gates, 208 logic cells, and 78 user I/Os into a 100-pin TQFP surface-mount package, fabricated on a 0.42 µm CMOS process and rated for a 125 MHz internal performance. Operating from a 5 V supply, this device combines fine-grained logic capacity with high-pin-count packaging, making it a legacy workhorse for glue-logic, bus-interface, and state-machine replacement designs. An FPGA (Field Programmable Gate Array) is a type of programmable logic device (PLD) that integrates thousands of configurable logic blocks (CLBs), programmable interconnect, and I/O cells on a single semiconductor die. FPGAs occupy the middle ground between simple PLDs (PALs, GALs) and high-density CPLDs, offering higher logic density than SPLDs while remaining user-programmable in-circuit via SRAM or antifuse configuration memory. The FLEX 8000 family, in particular, pioneered the use of LUT-based logic elements with dedicated high-speed carry and cascade chains, enabling efficient arithmetic and datapath implementation. Key features of the EPF8282ATC100-4N include 78 I/Os, four dedicated fast-input pins for synchronous control signals (clock, clear, preset), and 26 Logic Array Blocks (LABs). Its 100-pin TQFP package supports high-pin-count bus integration, allowing multiple 32-bit buses to be consolidated into a single device. The bypassable flip-flop architecture enables purely combinatorial functions by routing LUT outputs directly to device pins, reducing latency for glue logic applications. Internally, the FLEX 8000 architecture provides two dedicated high-speed paths—carry chains and cascade chains—that accelerate arithmetic operations and wide fan-in functions. The 0.42 µm CMOS process delivers the speed and density balance required for mid-range programmable logic designs of its era, and the 5 V core and I/O supply simplifies integration into legacy 5 V digital systems. Typical applications include 32-bit bus integration in industrial control systems, peripheral interfacing in telecom and networking equipment, custom state machines in test and measurement instruments, and replacement of multiple discrete SSI/MSI logic ICs with a single programmable device. Designers typically choose the EPF8282ATC100-4N when migrating from discrete TTL or CMOS logic to a single reconfigurable solution. When designing with this device, note that the FLEX 8000 family requires external configuration memory (typically an EPC1 or EPC2 serial configuration device) and the Quartus or MAX+PLUS II development environment for HDL synthesis and programming file generation. The -4 speed grade denotes the slowest of the FLEX 8000 commercial speed grades, prioritizing cost over maximum operating frequency. This page synthesizes distributor pricing from DigiKey and Mouser, drop-in same-family alternatives within the FLEX 8000 portfolio, and practical design notes not consolidated in the legacy Altera datasheet, supporting both procurement decisions and engineering design reuse.
EPF8282ATI100-3 - 2.5K Gates, 208 Cells, 125MHz FLEX 8000 FPGA | Altera
The Altera EPF8282ATI100-3 is a FLEX 8000 family Field Programmable Gate Array (FPGA) with 2,500 usable gates, 208 logic cells, 26 Logic Array Blocks (LABs), and 78 user I/Os, housed in a 100-pin TQFP package. It is fabricated on a 0.42 µm CMOS process, supports a 5V supply, and operates at up to 125 MHz system clock frequency with the -3 speed grade indicating its mid-tier performance position within the family. A FPGA (Field Programmable Gate Array) is a type of integrated circuit whose logic and interconnections are configured by the end user via SRAM configuration memory, allowing in-circuit reconfigurability without mask changes. Within the broader programmable logic hierarchy, FPGAs sit above CPLDs (Complex Programmable Logic Devices) in logic density, and the FLEX 8000 family occupies Altera's classic high-density SRAM-based FPGA tier from the late 1990s, positioned as a high-volume alternative to gate-array ASICs. Key features include 78 user I/O pins supporting common single-ended standards of its era, 208 logic cells distributed across 26 LABs each containing 8 logic elements, 5V core and I/O supply, in-circuit reconfigurability via SRAM configuration bits, and compatibility with Altera EPC1, EPC1064, EPC1213, and EPC1441 serial configuration devices as well as industry-standard parallel EPROMs. The 100-pin TQFP package enables standard surface-mount PCB assembly on 0.5 mm pitch land patterns. The FLEX 8000 architecture uses CMOS SRAM configuration elements that load at system power-up from an external non-volatile memory. Its hierarchical routing includes FastTrack interconnect for predictable timing across die regions, and each Logic Element contains a 4-input look-up table, a programmable flipflop, and a dedicated carry chain for arithmetic. Typical applications include glue-logic consolidation in legacy industrial systems, protocol bridging interfaces, motor-control co-processors, and replacement of discrete TTL/CMOS logic on 5V backplanes. The 5V tolerant I/Os make it particularly suitable for retrofit designs originally built around 74-series logic. When designing with this device, ensure the configuration memory source (EPC1, EPC1064, parallel EPROM, or micro-controller) matches the chosen configuration scheme. The 100-pin TQFP requires 0.5 mm pitch PCB footprint and adequate ground-plane thermal management at sustained high toggle rates. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, including same-family variants and pin-compatible replacements useful for legacy system refresh.