FPGA & CPLD
製品 (6666)
EPF6024ATI144-3 - FLEX 6000 FPGA, 24K Gates, 117 I/O | Altera | 144-LQFP
The Altera (Intel® Programmable Solutions Group) EPF6024ATI144-3 is a FLEX 6000 series Field-Programmable Gate Array (FPGA) housed in a 144-pin LQFP package (TQFP variant) with 1960 logic elements/cells, 117 user I/Os, and a 3.3V core supply. It belongs to Altera's classic FLEX 6000 family, introduced as a cost-effective SRAM-based programmable logic device for glue logic, bus interface bridging, and low-to-medium density state-machine designs. A Field-Programmable Gate Array (FPGA) is a semiconductor IC containing an array of configurable logic blocks (CLBs), programmable interconnect, and programmable I/O cells that engineers can configure post-manufacture to implement arbitrary digital logic. FPGAs sit in the digital logic hierarchy above discrete glue logic (74-series TTL/CMOS) and below ASICs, offering rapid prototyping, in-system reprogrammability, and parallel logic execution at hardware speeds. The FLEX 6000 family specifically targets low-cost, high-volume applications where mask-programmed gate arrays were previously the only option. Key features of the EPF6024ATI144-3 include 1960 logic elements (LEs), 24,000 typical gates, four embedded array blocks (EABs) for RAM/ROM implementation, 117 programmable I/O pins, JTAG-compliant IEEE 1149.1 boundary-scan support, and in-system programmability via the Altera MAX+PLUS II / Quartus tool flow. The device operates over the industrial temperature range of -40°C to +85°C, supports 3.3V VCCINT, and provides multi-voltage I/O support for interfacing with 5.0V, 3.3V, and 2.5V logic families. Technically, the FLEX 6000 architecture employs a continuous SRAM-based configuration cell driven by an on-chip oscillator and serial/parallel configuration interface. Its Logic Array Block (LAB) contains 10 LEs per LAB, and the device integrates Look-Up Table (LUT)-based combinational logic alongside dedicated carry-chain logic and cascaded flip-flops. Four Embedded Array Blocks (EABs) provide 2K-bit dual-port RAM blocks each, allowing on-chip memory for FIFOs, lookup tables, and small state machines. Typical applications span telecommunications line cards, industrial control and instrumentation, automotive body electronics, military and aerospace subsystems, glue-logic consolidation on legacy PCBs, and PCI bus interface bridging. The 144-pin TQFP footprint enables pin-compatible migration across the FLEX 6000 family (EPF6010, EPF6016, EPF6024), giving designers a single PCB layout that supports multiple densities. Designers should note that FLEX 6000 devices are legacy parts approaching end-of-life - consider Altera (Intel) Cyclone series (Cyclone IV, Cyclone V) for new designs requiring modern I/O mix, transceivers, or higher logic density. Configuration memory must be loaded at every power-up from a serial EEPROM or JTAG, so a companion EPC1/EPC2 configuration device is typically required for standalone operation. This page synthesizes distributor pricing, drop-in pin-compatible alternatives from the FLEX 6000 family, design notes for legacy FPGA retrofits, and verified parameters not consolidated on any single distributor listing.
EPF6024ATI144-3N - 24K Gate FLEX 6000 FPGA, 144-LQFP | Intel (Altera)
The Intel (formerly Altera) EPF6024ATI144-3N is a member of the FLEX 6000 family of SRAM-based Field Programmable Gate Arrays, offering approximately 24,000 typical gates (1,960 logic elements) packaged in a 144-pin Low-profile Quad Flat Pack (LQFP, T144). It provides 117 user I/O pins and operates from a 3.3 V core supply, with the -3 speed grade indicating a faster -3 timing bin in the FLEX 6000 hierarchy. What is an FPGA? An FPGA (Field Programmable Gate Array) is a semiconductor IC whose logic function is defined by the customer after manufacturing, rather than at the wafer fab. In the programmable logic hierarchy, an FPGA sits above a CPLD (Complex Programmable Logic Device) and a SPLD (Simple PLD) in terms of density and routing flexibility. The FLEX 6000 family is Altera's classic high-volume, low-cost FPGA line built on a 0.5 µm SRAM process with a continuous, SRAM-based interconnect — requiring an external configuration EPROM at power-up. This places the EPF6024ATI144-3N above mask-ROM ASICs in flexibility but below CPLDs in non-volatility. Key features of the EPF6024ATI144-3N include: 1,960 logic elements, 117 user I/O pins, built-in SRAM configuration memory, JTAG (IEEE 1149.1) boundary-scan support, multi-volt I/O compatibility (3.3 V / 5 V tolerant inputs on selected banks), and the -3 speed grade placing it in the faster half of the FLEX 6000 speed bin. The 144-LQFP package is a surface-mount gull-wing form factor that is hand-solderable and compatible with low-cost PCB assembly. The 'N' suffix indicates lead-free / Pb-free terminal finish per industry convention. Architecturally, the FLEX 6000 family uses a continuous routing architecture known as the 'FastTrack Interconnect', with logic elements (LEs) grouped into Logic Array Blocks (LABs) of 10 LEs each, interconnected by row and column routing channels. This architecture favors designs with moderate register density and predictable timing closure — common in glue logic, bus interfaces, and peripheral controllers. Typical applications for the EPF6024ATI144-3N include industrial control glue logic, legacy peripheral bus bridges (PCI, ISA, VME), telecommunications line cards, and low-volume prototyping where mask-ROM ASICs are not economical. The 117 user I/O count suits designs that require wide parallel buses or multiple serial channels. The part is now considered NRND/last-time-buy by many distributors as the FLEX 6000 family has been superseded by the Cyclone series. When designing with this part, plan for an external configuration memory (EPC1, EPC2, or compatible), ensure the 3.3 V rail has clean decoupling within 25 mm of the supply pins, and verify I/O bank voltage compatibility before connecting to 5 V peripherals. Legacy FLEX 6000 designs should be migrated to Cyclone II or Cyclone IV for new production unless pin-compatibility with the existing 144-LQFP footprint is mandatory. This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not found in the original manufacturer datasheet.
EPF81188AGC232-2 - 12K Gates FLEX 8000 FPGA 232-CPGA | Altera
The Altera (now Intel PSG) EPF81188AGC232-2 is a member of the FLEX 8000 family of CMOS programmable logic devices (PLDs), providing 12,000 usable gates and 1,008 logic elements in a 232-pin Ceramic Pin Grid Array (CPGA) package. Fabricated on a 0.42 µm CMOS process and operating from a 5 V supply, the device supports system clock speeds up to 125 MHz and integrates up to 1,500 registers for sequential logic density. A Field-Programmable Gate Array (FPGA) is a semiconductor device built around an array of configurable logic blocks (CLBs), programmable interconnect, and programmable I/O cells. Within the broader semiconductor hierarchy, an FPGA sits below application-specific integrated circuits (ASICs) but above discrete logic gates in terms of integration density. FLEX 8000 devices specifically target low-cost, high-density, register-rich designs where designers need fast time-to-market without the NRE cost of an ASIC. The FLEX 8000 family sits below the later FLEX 10K and Cyclone families in Altera's FPGA roadmap. Key features of the EPF81188AGC232-2 include in-circuit reconfigurability (ICR) through external configuration devices or intelligent controllers, JTAG boundary-scan test support, and configurable I/O standards operating at 3.3 V or 5 V. The device provides approximately 12,000 usable gates, 1,008 logic cells, and 192 user I/O pins. The 232-CPGA package is a through-hole ceramic pin grid array designed for high-reliability and military temperature applications where surface-mount plastic packages are unsuitable. The EPF81188AGC232-2 uses a continuous, SRAM-based interconnect architecture driven by Altera's MAX+PLUS II development toolchain. Logic synthesis maps user designs into Look-Up Table (LUT) based logic elements whose contents are loaded from external serial or parallel configuration EEPROMs at power-up. The architecture is register-rich, which benefits pipelined datapaths and state-machine-heavy designs common in telecommunications glue logic, bus interfacing, and protocol bridging. Typical applications include telecommunications line cards, industrial control systems, military and aerospace electronics, prototyping of ASIC replacements, and high-reliability embedded computing platforms. The 232-CPGA package allows operation across extended temperature ranges and survives mechanical environments where plastic QFP packages would fail. When designing with this part, ensure proper decoupling (0.1 µF ceramic at every supply pin) and a verified configuration clock source. Designers migrating from FLEX 8000 to newer families such as MAX II or Cyclone must re-author their designs because the logic cell architecture is incompatible at the bitstream level. The 'AGC' suffix indicates a CPGA package; the '232' indicates pin count; the '-2' suffix denotes the speed grade. This page synthesizes distributor pricing, parametric drop-in alternatives (same FLEX 8000 family only, since no pin-compatible cross-brand FPGA exists), lifecycle status, and practical design notes not consolidated in the original datasheet.
EPF81188AGC232-2A - FLEX 8000 12K Gates 1008 Cells FPGA | Altera
The Altera EPF81188AGC232-2A is a high-density FLEX 8000 family CMOS programmable logic device (PLD) delivering 12,000 usable gates and 1,008 logic elements in a 232-pin Ceramic Pin Grid Array (CPGA) package. It supports configurable I/O operation at 3.3 V or 5 V with a 5 ns propagation delay, enabling it to address glue-logic, bus-interface, and state-machine designs in legacy industrial, telecom, and military systems. A programmable logic device (PLD) is a digital semiconductor whose logic function and interconnect topology are defined by user-supplied configuration data, typically loaded from external non-volatile memory. The FLEX 8000 architecture sits within the PLD hierarchy as a register-rich, SRAM-based CPLD/FPGA hybrid family that combines fast combinatorial paths with abundant D-type registers, making it well suited for system-level integration tasks that mix control logic, datapath, and registered I/O. EPF81188 family members are positioned between pure CPLDs and high-density SRAM FPGAs in that they offer finer-grained logic blocks and faster deterministic timing. Key features include 184 user I/O pins with 4 dedicated inputs, a maximum internal operating frequency of 125 MHz, and 0.42 µm CMOS process technology. In-circuit reconfigurability (ICR) via external configuration devices or intelligent controllers allows the device to be reprogrammed in-system, and the registered output function plus JTAG boundary-scan testability simplify board-level integration. The CPGA-232 ceramic package targets harsh-environment and through-hole assemblies where leaded pins and hermeticity are preferred over plastic surface-mount. Architecturally, the EPF81188A implements a symmetric logic element array interconnected by continuous FastTrack channels, with each logic element containing a 4-input look-up table, a programmable register, and dedicated carry and cascade chains. The 0.42 µm CMOS process delivers the 5 ns pin-to-pin delay figure and the 125 MHz internal clock rate that define the speed grade suffix (-2A). Memory is implemented via embedded SRAM configuration cells that must be loaded at every power-up from an external configuration EPROM or via a microcontroller. Typical applications include legacy telecom backplane glue logic, industrial PLCs, military/aerospace control subsystems, custom bus bridges (ISA, VME, PCI), and ASIC prototyping where the FLEX 8000 family is already qualified. The 184 I/O pins make it attractive for designs that need to fan out to many parallel buses or legacy peripherals that newer low-I/O FPGAs cannot accommodate. When designing with this part, plan configuration memory in the BOM and verify timing closure with the Quartus II MAX+PLUS II toolchain, which is the original design flow for the FLEX 8000 family. The CPGA-232 package requires a through-hole socket or PCB with plated through-holes, which significantly increases board cost versus QFP/BGA alternatives - this trade-off should be justified by the need for hermeticity or field replaceability. This page synthesizes distributor pricing, packaging details, and pragmatic engineering guidance that goes beyond the bare datasheet to help purchasing and design teams decide whether the EPF81188AGC232-2A is the right FLEX 8000 variant for their next revision.
EPF81188AGC232-3 - FLEX 8000 12K Gates 1008 Cells CPLD | Intel / Altera
The Intel / Altera EPF81188AGC232-3 is a member of the FLEX 8000 device family, a register-rich CMOS programmable logic device delivering 12,000 usable gates, 1008 logic elements, and 1,500 registers, housed in a 232-pin Ceramic Pin Grid Array (CPGA) package. Operating at 5 V with a 0.42 µm process technology and a 125 MHz internal frequency, this Complex Programmable Logic Device (CPLD) supports in-circuit reconfigurability (ICR) via external configuration devices or intelligent controllers, enabling field upgrades without board removal. A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that combines multiple PAL/GAL macrocell arrays with a programmable interconnect matrix, sitting in the programmable logic hierarchy between simple SPLDs/CPLDs and SRAM-based FPGAs. CPLDs typically provide deterministic pin-to-pin propagation delays, abundant flip-flops, and wide combinational logic support, making them well suited for glue logic, bus interface bridging, and control state machines in mixed-signal systems. Key features of the EPF81188AGC232-3 include 188 user I/O pins, dedicated input pins, and 3.3 V or 5 V I/O signaling support. The 232-pin CPGA ceramic package delivers robust thermal and mechanical performance for industrial and military-grade applications. In-system programmability through the IEEE 1149.1 JTAG interface allows boundary-scan testing and configuration without removing the device from the board. From an architecture standpoint, the FLEX 8000 family uses a continuous, hierarchical interconnect structure called the FastTrack, providing predictable routing delays across all logic cells. Each Logic Element (LE) contains a 4-input look-up table (LUT), a programmable flip-flop, and dedicated carry and cascade chains for arithmetic and wide fan-in logic. This design produces consistent timing closure for synchronous designs. Typical applications include telecommunications line cards, industrial control boards, military/aerospace systems, and legacy peripheral glue-logic replacement where high I/O count and 5 V tolerance are required. The CPGA package supports through-hole mounting, ideal for high-reliability sockets and prototyping. When designing with the EPF81188AGC232-3, observe the 5 V supply tolerance and ensure JTAG chain integrity for in-system programming. Use Altera/Intel Quartus design software (legacy MAX+PLUS II is also supported) for synthesis, fitting, and timing analysis. This page synthesizes distributor pricing, same-package drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
EPF81188AGC232-4 - FLEX 8000 12K-Gate FPGA, 232-CPGA, 125MHz | Altera
The Altera (Intel) EPF81188AGC232-4 is a member of the FLEX 8000 family of register-rich, high-density CMOS programmable logic devices, integrating approximately 12,000 usable gates and 1,008 logic cells around a 5V, 0.42 µm process. Per the FLEX 8000 device family datasheet, the part is housed in a 232-pin Ceramic Pin Grid Array (CPGA) package and supports system clocking up to 125 MHz, making it a mid-1990s workhorse for glue logic, bus interfacing, and DSP front-end blocks. A Field-Programmable Gate Array (FPGA) is a semiconductor integrated circuit whose logic function is defined by a customer-loaded configuration bitstream rather than by hard-wired masks. Within the broader taxonomy, the EPF81188AGC232-4 sits in the PLD (programmable logic device) branch, descending into SRAM-based FPGAs, then the FLEX 8000 sub-family of fine-grained, register-rich architectures. The FLEX 8000 line pioneered Look-Up-Table (LUT)-based logic elements with dedicated carry chains and a continuous routing fabric, and bridged the gap between classic PLDs (PAL/GAL) and modern System-on-Chip FPGAs. Key specifications include 1,008 logic cells, 184 user I/O pins, 12,000 usable gates, and 5.5 ns pin-to-pin propagation delay. The device supports configurable I/O standards at 3.3 V or 5 V, includes an in-circuit reconfigurability (ICR) interface for external configuration devices, and provides internal tri-state buses with 5-V tolerant I/O on 5-V variants. Operating junction temperature spans the commercial 0 °C to 70 °C window, with Altera's "-4" speed grade designating one of the faster timing bins available in the family. Architecturally, the EPF81188AGC232-4 uses a four-input LUT logic element, embedded array block (EAB) memory cells, and a FastTrack interconnect routing fabric. Each logic element contains a 4-bit LUT plus a programmable register, supporting either combinatorial or registered outputs. The 0.42 µm CMOS process and 5V core provide strong noise margin but relatively higher static current than modern nodes, and the SRAM configuration cell requires a boot PROM on every power-up. Typical applications include legacy telecom interface cards, industrial control backplanes, military/aerospace prototypes, and DSP coprocessor glue logic where hardware re-programmability matters more than raw logic density. The 232-pin CPGA is well-suited to through-hole prototyping sockets and ruggedized environments. Designers should treat the EPF81188AGC232-4 as NRND (Not Recommended for New Designs): Altera has migrated the FLEX 8000 family through multiple obsolescence cycles, and lead-time risk is significant. New designs should evaluate Cyclone IV/V or MAX II CPLDs for pin-compatible low-density replacements. If the CPGA package footprint is fixed, source through franchised distributors and confirm factory date code before commit. This page synthesizes distributor pricing, drop-in alternative FLEX 8000 speed/pinout variants, and practical obsolescence design notes not found in the original manufacturer datasheet.
EPF81188AGC232-4N - 12K-Gate FLEX 8000 FPGA, 5V, CPGA-232 | Altera
The Altera EPF81188AGC232-4N is a member of the FLEX 8000 device family, a high-density, register-rich CMOS programmable logic device (PLD) offering up to 12,000 usable gates and approximately 1,500 registers, housed in a 232-pin Ceramic Pin Grid Array (CPGA) package and operating from a 5V supply. The device is built on a 0.42 µm CMOS process, integrates 1,008 logic cells, and is rated for system clock frequencies up to 125 MHz with a propagation delay of approximately 5.5 ns (speed grade -4). What is a FLEX 8000 FPGA? The FLEX (Flexible Logic Element Matrix) 8000 is Altera's classic SRAM-based programmable logic family introduced in the mid-1990s. It sits within the broader hierarchy of programmable logic devices (PLDs) -> CPLDs/FPGAs -> SRAM-based FPGAs -> register-rich, fine-grained logic arrays. The FLEX 8000 was Altera's first true SRAM-based FPGA, offering in-circuit reconfigurability (ICR) via external configuration devices such as EPC1 or EPC2, which let designers update logic in-system without removing the part from the board. Key features include 12K usable gates, 1,008 logic elements, 125 MHz maximum operating frequency, 5V core supply, in-system programmability through the IEEE 1149.1 JTAG interface or serial configuration ROM, and bidirectional I/O pins optimized for 5V TTL/CMOS signaling. The CPGA-232 ceramic package supports high-reliability and military temperature grade operation, making the -4N variant well-suited for harsh-environment designs. The FLEX 8000 architecture uses a fine-grained logic element (LE) structure with a four-input look-up table (LUT), a programmable register, and a dedicated carry chain for fast arithmetic. Each Logic Array Block (LAB) contains eight LEs, with FastTrack interconnect providing predictable, repeatable routing delays that simplify static timing analysis compared with channel-routed predecessors. Typical applications include legacy telecom interfaces, industrial control and factory automation glue logic, military and aerospace systems, avionics data acquisition front-ends, and in-system reconfigurable instrumentation. The 5V tolerant I/O simplifies migration from TTL-based designs without level shifters, and the JTAG-based reconfiguration enables field upgrades for deployed equipment. When designing with this part, observe the 5V VCCINT supply requirement and provide clean power decoupling with 0.1 µF and 10 µF capacitors near each supply pin. Configuration must be supplied by an Altera EPC1/EPC2 serial configuration PROM or by a microprocessor driving the serial configuration interface; the device does not retain configuration on power-down because it is SRAM-based. This page synthesizes distributor stock data, real-time cross-reference intelligence, FLEX 8000 family context, and practical configuration guidance not consolidated in any single manufacturer document.
EPF81188AQC208-2 - FLEX 8000 FPGA 12K Gates 148 I/O 5V | Intel / Altera
The Intel / Altera EPF81188AQC208-2 is a member of the FLEX 8000 family of CMOS SRAM-based Field Programmable Gate Arrays (FPGAs), packaged in a 208-pin BFQFP (PQFP). The device integrates approximately 12,000 usable gates, 1,008 logic cells, and 148 user I/O pins, delivering up to 125 MHz internal performance at a 5 V core supply. According to the Altera FLEX 8000 datasheet, the device belongs to the EPF81188A density tier, with 126 LABs (Logic Array Blocks) and 148 I/Os that support both 3.3 V and 5.0 V I/O operation via the MultiVolt I/O interface feature. A Field Programmable Gate Array (FPGA) is a semiconductor integrated circuit that contains a matrix of configurable logic blocks (CLBs), programmable interconnects, and programmable I/O cells. FPGAs are programmed after manufacturing, allowing designers to implement custom digital logic without fabricating application-specific integrated circuits. Within the broader semiconductor hierarchy, FPGAs belong to the programmable logic device (PLD) family, alongside CPLDs and SPLDs, and sit above fixed-function ASICs and microcontrollers in design flexibility for parallel, high-speed digital logic. Key features of the EPF81188AQC208-2 include 1,008 logic elements, 12,000 usable gates, 148 programmable I/O pins, dedicated MultiVolt I/O supporting 3.3 V or 5.0 V interface levels, in-circuit reconfigurability (ICR) via Altera EPC1, EPC1064, EPC1213, or EPC1441 configuration devices, full PCI Local Bus Specification compliance for embedded systems, and an industrial-grade operating temperature range. The FLEX 8000 architecture uses CMOS SRAM configuration memory, so the device loads its configuration at every power-up from an external serial or parallel EPROM. The FLEX 8000 architecture is built around a fast continuous-channel routing fabric with embedded array blocks (EABs) for high-density memory functions. Logic is organized into LABs, each containing eight logic elements with a carry chain and a cascade chain that accelerates arithmetic and wide fan-in functions. The continuous interconnect matrix delivers predictable timing across the entire device, which was an industry-leading feature at the time of introduction for high-density programmable logic. Typical applications for the EPF81188AQC208-2 include PCI bus interface controllers, telecommunications glue logic, industrial control and instrumentation, glue logic for legacy 5 V microprocessor systems, and high-speed parallel DSP co-processors. The device's 5 V tolerant I/O and PCI compliance make it particularly suitable for replacing discrete TTL/CMOS logic in industrial backplane designs. When designing with the EPF81188AQC208-2, ensure the configuration memory is supplied at every power-up through a compatible Altera EPC configuration device. Note that this part is mature and approaching obsolescence, so designers should validate long-term availability and consider newer Cyclone or MAX series equivalents for new designs. This page synthesizes distributor pricing, drop-in Altera FLEX 8000 alternatives, and practical configuration guidance not consolidated in a single manufacturer datasheet, with information verified against DigiKey, Octopart, Arrow, and the Altera FLEX 8000 datasheet as of 2026-09-12.
EPF81188AQC208-3 - FLEX 8000 FPGA, 12K Gates, 148 I/O, 208-BFQFP | Intel / Altera
The Intel / Altera (formerly Altera Corporation) EPF81188AQC208-3 is a member of the FLEX 8000 family of high-density CMOS Field Programmable Gate Arrays, offering 12,000 usable gates, 1,008 logic elements (LEs) and 148 user I/Os in a 208-pin BFQFP (Plastic Quad Flat Pack) package. The "-3" speed grade and commercial temperature grade (0C to +70C) make this device well suited for cost-sensitive, high-volume logic integration in industrial, telecom, and embedded control systems. Key features include 126 Logic Array Blocks (LABs) per device, in-circuit reconfigurability (ICR) that allows the FPGA to be re-programmed on the board without removing the part, and the MultiVolt I/O interface that lets the device drive either 3.3V or 5.0V outputs by selecting the VCCIO rail, providing easy bridging between legacy 5V peripherals and modern 3.3V ASICs. Each LE contains a 4-input look-up table, a programmable register, and dedicated carry and cascade chains. The FLEX 8000 architecture employs a continuous, predictable routing fabric called the FastTrack Interconnect, which provides horizontal and vertical routing resources connecting every LAB to every other LAB with uniform delay, simplifying timing closure. Continuous Interconnect tiles span the full device, eliminating segmented-routing bottlenecks found in earlier CPLDs and enabling deterministic high-frequency design. Typical applications include glue logic and bus interfacing, custom state-machine controllers, peripheral protocol bridges (UART, I2C, SPI multiplexing), legacy 5V system integration, prototyping of ASIC functions, and high-I/O parallel processing interfaces. The 148 user I/Os in a 208-pin QFP package provide ample pin budget for parallel data buses. When designing with the EPF81188AQC208-3, note that the device requires two supply rails: VCCINT (5V core) and VCCIO (3.3V or 5V I/O). All unused I/O pins should be left floating or tied to ground per the datasheet to minimize leakage, and configuration must be loaded via the Altera MAX+plus II or Quartus development flow using a serial or parallel EPROM. This page synthesizes distributor pricing, drop-in same-package alternatives, and design considerations for the EPF81188AQC208-3 in a single reference not found in the original Altera datasheet PDF.
EPF81188AQC208-4 - FLEX 8000 FPGA 12K Gates 1008 Cells 5V | Intel
The Intel (Altera) EPF81188AQC208-4 is a member of the FLEX 8000 family of CMOS SRAM-based Field-Programmable Gate Arrays (FPGAs), delivering 12,000 usable gates, 1,008 logic cells, and 148 user I/Os in a 208-pin Power Quad Flat Pack (PQFP/BFQFP) package. The device operates from a 5 V supply and is built on a 0.42 µm CMOS process, supporting in-circuit reconfigurability (ICR) and MultiVolt I/O for 3.3 V / 5.0 V mixed-voltage system interfacing. The '-4' speed grade targets commercial temperature (0°C to 70°C) applications. An FPGA (Field-Programmable Gate Array) is a programmable logic device that allows engineers to implement arbitrary digital logic via a configuration bitstream stored in SRAM. FPGAs sit in the programmable-logic hierarchy between simple PLDs/CPLDs and modern high-density FPGAs/SoCs, and the FLEX 8000 family is Altera's classic 5 V register-rich architecture that predates the Cyclone and Stratix lines. The EPF81188A is positioned as a mid-density member, suited to glue logic, bus interface, and state-machine applications that exceed typical CPLD capacity but do not need the resources of modern 100K-gate devices. Key features include 126 Logic Array Blocks (LABs), 148 user I/O pins, 125 MHz internal performance, MultiVolt I/O support (3.3 V or 5.0 V), in-circuit reconfigurability via JTAG, and embedded memory distributed across the logic array. The 208-pin BFQFP/PQFP package provides gull-wing leads suitable for standard surface-mount assembly with a fine but manageable lead pitch. Architecturally, the FLEX 8000 device uses a sea-of-LABs interconnect with continuous FastTrack routing, dedicated carry chains for fast arithmetic, and a cascade chain for wide fan-in logic. Each LAB contains 8 Logic Elements (LEs), each with a 4-input LUT and a programmable register. The MultiVolt I/O feature allows output buffers to drive 3.3 V or 5.0 V loads regardless of VCCINT, simplifying mixed-voltage board designs. Typical applications include legacy industrial control glue logic, telecom backplane interface bridging, peripheral bus controllers (ISA/PCI bridge glue), and custom state-machine replacement in 5 V systems. The commercial temperature grade makes it well suited to indoor equipment, test gear, and prototyping platforms. When designing with this part, confirm that 5 V I/O and 0°C to 70°C commercial temperature match the system requirement. The BFQFP-208 footprint is not pin-compatible with modern lead-free BGA packages, so migration to a Cyclone or MAX device will require PCB redesign. Configuration requires an Altera programming cable (ByteBlaster/MasterBlaster) or a configuration EPROM. This page synthesizes distributor stock, parametric alternatives, and practical design considerations not always collected in the original Altera datasheet.
EPF81188AQC240-2 - FLEX 8000 FPGA, 12K Gates, 240-Pin PQFP | Altera
The Altera (Intel) EPF81188AQC240-2 is a member of the FLEX 8000 family of CMOS SRAM-based Field Programmable Gate Arrays, offering 12,000 usable gates and 1,008 logic elements housed in a 240-pin Plastic Quad Flat Pack (PQFP/BFQFP) package. It provides 184 user I/Os and 126 Logic Array Blocks (LABs), targeting mid-density glue-logic, bus-interface, and control-plane designs where ASIC NRE cost is unjustified. What is an FPGA? A Field-Programmable Gate Array is a semiconductor IC containing an array of configurable logic blocks (CLBs/LABs), programmable interconnect, and I/O cells that the user programs after manufacture via a configuration bitstream stored in SRAM, EPROM, or flash. The FLEX 8000 family belongs to the broader class of programmable logic devices (PLDs) and historically bridged CPLDs and early ASICs in the 1990s mid-density market. FPGAs typically sit hierarchically between CPLDs and ASIC/ASSPs, offering higher density than CPLDs and lower NRE than ASICs. Key features of the EPF81188AQC240-2 include a 5 V core supply with MultiVolt I/O support for 3.3 V or 5.0 V interfaces, 0.42 µm CMOS SRAM process technology, in-circuit reconfigurability (ICR) via Altera EPC1/EPC1064/EPC1213/EPC1441 configuration devices, and a -2 speed grade targeting higher internal performance. The -2 speed grade is the fastest of the FLEX 8000 family at this density. Technically, the FLEX 8000 architecture uses a row/column LAB structure with FastTrack continuous routing interconnect and a 4-input look-up table (LUT) logic element. The 240-pin PQFP package provides 184 usable user I/Os across four I/O banks, enabling wide parallel bus interfaces. The -2 speed grade improves internal timing margin relative to the -3 and -4 grades. Typical applications include telecommunications line cards, industrial control boards, mid-density bus bridges, and legacy replacement of discrete TTL/CMOS glue logic. It is also used in educational and prototyping systems where Quartus II (legacy) or MAX+PLUS II design tools support the FLEX 8000 family. When designing with this device, note the 5 V supply requirement and the need for an external configuration EPROM (EPC1/EPC1441 family) for non-volatile bitstream storage. The 240-pin PQFP footprint requires careful PCB layout due to 0.5 mm pitch and exposed lead-frame thermal considerations. This page synthesizes distributor pricing, drop-in same-package alternatives from the FLEX 8000 family, lifecycle status (NRND/last-time-buy), and practical design notes not found in the manufacturer datasheet alone.
EPF81188AQC240-3 - 12K Gates FLEX 8000 FPGA 240-PQFP | Altera
The Altera (Intel) EPF81188AQC240-3 is a member of the FLEX 8000 family of CMOS SRAM-based Field-Programmable Gate Arrays (FPGAs) housed in a 240-pin Plastic Quad Flat Pack (PQFP/BFQFP) package, providing approximately 12,000 usable gates, 1,008 logic cells (logic elements), 184 user I/Os, and a maximum toggle frequency of 125 MHz on a 0.42 µm CMOS process with a 5 V supply. The FLEX 8000 family sits within the broader Altera taxonomy of high-density register-rich programmable logic, positioned between earlier MAX-class CPLDs and the later FLEX 10K and APEX families, and uses a row-and-column interconnect fabric that is configured by on-chip CMOS SRAM at system power-up. A Field-Programmable Gate Array (FPGA) is a type of programmable logic device (PLD) that contains an array of configurable logic blocks (CLBs) surrounded by programmable routing resources. The logic and interconnections in the FLEX 8000 architecture are configured with CMOS SRAM elements; FLEX 8000 devices are configured at system power-up with data stored in an industry-standard parallel EPROM, an Altera serial configuration device (EPC1, EPC1213, EPC1064, or EPC1441), or provided by a system controller. The "-3" speed grade at the commercial 0–70 °C temperature range is the mid-tier speed bin for the family, balancing timing margin against cost relative to the -2 and -4 grades. Key features of the EPF81188AQC240-3 include 126 Logic Array Blocks (LABs), 184 user I/O pins, 5 V single-supply operation, in-circuit reconfigurability (ICR), and JTAG-based IEEE 1149.1 boundary-scan test support. The device's high pin count allows integration of multiple 32-bit buses into a single device, simplifying multi-bus bridge designs. All configuration data is volatile and must be reloaded after each power-up, requiring a companion configuration memory on the board. Typical applications include glue logic replacement, bus interface bridges (e.g., PCI/ISA bridge, microprocessor I/O expansion), telecommunications line-card controllers, industrial control logic, prototyping platforms for ASICs, and high-density state machines. Engineers typically select this part when a design has outgrown a complex PLD but does not yet justify a larger FLEX 10K, Cyclone, or MAX II device, and where 5 V tolerant I/O is required to interface with legacy logic. A key design consideration is that the EPF81188AQC240-3 requires a configuration source at every power-up, so a dedicated EPC-series configuration EPROM or a microcontroller-driven download is mandatory. Designers should also budget for the configuration time before the FPGA becomes user-active and ensure JTAG chain integrity for boundary-scan testing. This page synthesizes distributor pricing, lifecycle observations, and drop-in alternatives drawn from the same FLEX 8000 family, not found in isolation on the manufacturer datasheet alone.
EPF81188AQC240-4 - 12K Gates FLEX 8000 FPGA 240-PQFP | Altera
The Altera EPF81188AQC240-4 is a member of the FLEX 8000 family of high-density CMOS SRAM-based Field-Programmable Gate Arrays (FPGAs), delivering 12,000 usable gates, 1008 logic elements (LEs) organized into 126 Logic Array Blocks (LABs), and 184 user I/Os in a 240-pin Plastic Quad Flat Pack (PQFP/BFQFP) package. Speed grade -4 corresponds to the slowest (most economical) timing bin in the family, while the core architecture supplies a continuous FastTrack interconnect routing network for predictable timing closure across designs. A Field-Programmable Gate Array (FPGA) is a semiconductor integrated circuit whose digital logic functionality is defined after manufacturing via a configuration bitstream loaded into on-chip SRAM cells. FPGAs sit hierarchically above CPLDs (in density) and below ASICs (in unit cost for high volumes), making them the workhorse for digital signal processing, data-path manipulation, glue logic, and prototyping prior to ASIC tape-out. The FLEX 8000 family specifically targets register-rich designs through its 4-input look-up-table (LUT) based LE architecture with dedicated carry chains and cascade paths. The EPF81188AQC240-4 features 0.42 µm CMOS SRAM process technology, a 5 V core supply, in-circuit reconfigurability (ICR) allowing re-programming on the board without removing the device, and a commercial operating temperature range of 0 °C to 70 °C. Each LE combines a compact 4-input LUT with a programmable register, enabling both combinational and sequential logic implementations. The large register count (up to 1,500 per the family) makes the device particularly efficient for pipelined datapath and state-machine applications. Architecturally, the LABs are interconnected through FastTrack continuous routing rows and columns that span the entire die, providing uniform routing delay independent of placement. Configuration data is loaded serially or via byte-wide paths into on-chip SRAM, supporting the in-circuit reconfigurability feature critical for system-level design flexibility. The 184 user I/Os are sufficient to integrate multiple 32-bit buses into a single device, reducing board area and the chip count for bridging and bus-interface designs. Typical applications for the EPF81188AQC240-4 span digital signal processing (DSP) pipelines such as FIR filters and FFT engines, wide-data-path manipulation in image and video preprocessing, data-transformation glue logic between microprocessors and peripherals, telecommunications channel coding, and industrial control state machines. Designers also use this part in prototype ASIC verification, where the ICR feature enables rapid iteration of the design RTL without re-spinning the board. When designing with the EPF81188AQC240-4, plan for the 5 V supply tolerance of the FLEX 8000 family, provide proper decoupling (0.1 µF plus bulk capacitance) near each supply pin, and respect the JTAG configuration mode boundary-scan considerations. The PQFP-240 package is suitable for socketed development but may be replaced by surface-mount variants in production. This page synthesizes distributor pricing from DigiKey and Mouser, lists verified drop-in alternatives from the FLEX 8000 family, and consolidates practical design notes not aggregated in the manufacturer datasheet alone.
EPF81188AQI208-3 - FLEX 8000 FPGA, 12K Gates, 208-Pin PQFP | Altera
The Altera EPF81188AQI208-3 is a member of the FLEX 8000 programmable logic device family, delivering 12,000 usable gates and 1,008 logic elements in a 208-pin Plastic Quad Flat Pack (PQFP) with gull-wing leads. It operates from a 5V supply with 3.3V or 5V I/O compatibility, achieves a maximum clock frequency of 125 MHz, and has a typical propagation delay of 5.0 ns at the -3 speed grade. The device is fabricated on a 0.42 µm CMOS process and offers 148 configurable I/O pins for high signal fan-out. A Field-Programmable Gate Array (FPGA) is a semiconductor integrated circuit built around an array of configurable logic blocks (CLBs), programmable interconnect, and programmable I/O cells that the designer can reconfigure after manufacture to implement arbitrary digital logic. Within the broader taxonomy, an FPGA belongs to programmable logic devices (PLDs), which sit above standard logic ICs and below ASICs in design flexibility vs unit-cost trade-off. FPGAs are used when time-to-market, in-field upgradability, or high gate counts make a fixed-function ASIC uneconomical. Key features of the EPF81188AQI208-3 include in-circuit reconfigurability (ICR) via external configuration devices or intelligent controllers, a register-rich architecture with up to 1,500 registers for sequential logic density, JTAG boundary-scan test support per IEEE 1149.1, and multi-voltage I/O that simplifies interfacing to legacy 5V buses. The 208-pin PQFP footprint provides generous I/O count and a robust through-hole-style gull-wing termination suitable for industrial and communications equipment. The FLEX 8000 architecture uses a four-input look-up table (LUT) per logic element with a dedicated register and fast carry chain, balancing logic density with predictable timing for glue logic, bus interfacing, and state-machine heavy designs. The 0.42 µm CMOS process and -3 speed grade place this part in the legacy Altera lineup, well-supported by the MAX+PLUS II and Quartus design flows. Typical applications include automotive body electronics and lighting, communications equipment, broadband fixed-line access, industrial test and measurement, and legacy control systems requiring 5V-tolerant I/O. It is also seen in board-level glue logic for telecom backplane designs. When designing with this device, observe the 208-pin PQFP land pattern strictly: pad geometry and lead coplanarity matter for solder joint reliability, and decoupling must include bulk and high-frequency ceramics placed close to each VCC/GND pair. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, including a side-by-side comparison with other FLEX 8000 speed grades and compatible package options.
EPF81188AQI208-4 - FLEX 8000 FPGA, 16K Gates, 148 I/O, 208-PQFP | Intel
The Intel (formerly Altera) EPF81188AQI208-4 is a high-density FLEX 8000 series CMOS SRAM-based Field Programmable Gate Array (FPGA) housed in a 208-pin Plastic Quad Flat Pack (BFQFP/PQFP) package, featuring up to 16,000 usable gates, approximately 1,500 registers, 148 user I/Os, and 126 Logic Array Blocks (LABs). It is fabricated on a low-cost, high-density, register-rich CMOS process and operates from a single 5 V supply, integrating multiple 32-bit bus interfaces in a single device for high pin-count applications. An FPGA (Field Programmable Gate Array) is a type of programmable logic device (PLD) that uses configurable logic blocks (CLBs) and programmable interconnects to implement custom digital circuits. In the broader taxonomy, FPGAs sit under programmable logic -> PLD -> logic IC -> semiconductor. The FLEX 8000 family was introduced in the mid-1990s as Altera's register-rich, in-circuit reconfigurable architecture, intended for glue logic, bus interfacing, and state-machine consolidation. Compared with CPLDs, FPGAs offer higher logic density but require SRAM configuration at every power-up, typically loaded from a serial configuration PROM such as the Altera EPC1, EPC1064, EPC1213, or EPC1441. Key features of the EPF81188AQI208-4 include in-circuit reconfigurability (ICR), 148 programmable user I/Os, 6 dedicated clock input pins, JTAG-compliant boundary-scan test support, multiVolt I/O interface capability for 3.3 V and 5 V mixed systems, and a pin-compatible migration path across speed grades (-4, -3, -2). It is supported by the Altera MAX+plus II and Quartus design toolchains, and provides deterministic, register-rich architecture well suited to pipelined datapaths and high-speed state machines. The architecture is built on continuous FastTrack interconnect rows and columns with SRAM configuration cells. Logic is implemented in Logic Elements (LEs) grouped into LABs, each containing 8 LEs with carry-chain and cascade support. Dedicated input registers and output registers per I/O pin simplify pipeline and registered I/O designs, and four low-skew global clock networks feed registers across the die. Typical applications include 32-bit microprocessor glue logic and peripheral integration, PCI bus bridging and interface controllers, telecom line-card state machines, industrial control and instrumentation front-ends, DSP co-processing front-ends, and ASIC prototyping. The wide 5 V tolerant I/O and JTAG support make the device practical for legacy systems and migration from discrete TTL/CMOS logic. When designing with this device, ensure that a serial configuration PROM is included on the board for SRAM-based configuration at every power-up, and that the nCONFIG, nSTATUS, and CONF_DONE signals are correctly pulled and monitored. MultiVolt I/O allows direct interface to 3.3 V peripherals from the 5 V core, simplifying mixed-voltage designs without external level shifters. This page synthesizes distributor pricing, drop-in alternative MPNs from the same FLEX 8000 family, and practical design notes not consolidated on the manufacturer datasheet cover page.
EPF81188ARC240-2 - FLEX 8000 FPGA 12K Gates 240-RQFP | Altera
The Altera EPF81188ARC240-2 is a member of the FLEX 8000 family of CMOS programmable logic devices, delivering 12,000 usable gates, 1,008 logic elements (cells), and 184 user I/O pins in a 240-pin RQFP (RQFP/BFQFP) package with exposed thermal pad. It is built on a 0.42 µm CMOS process, operates from a 5 V supply, and supports system clock speeds up to 125 MHz, making it a low-cost, high-density, register-rich programmable logic solution for legacy and industrial designs. What is a FLEX 8000 FPGA? The FLEX 8000 family is a register-rich CMOS programmable logic device (PLD) line introduced by Altera in the 1990s. FPGAs (Field-Programmable Gate Arrays) belong to the broader category of programmable logic devices, sitting hierarchically as: FPGA -> PLD -> logic IC -> integrated circuit -> semiconductor. The FLEX 8000 series provides in-circuit reconfigurability (ICR) through external configuration devices or intelligent controllers, and is fully compliant with the PCI Local Bus Specification from the Peripheral Component Interconnect Special Interest Group (PCI SIG), enabling direct interface to PCI bus systems without bridging logic. Key features of the EPF81188ARC240-2 include 12,000 usable gates, 1,008 logic cells, 282 to 1,500 flip-flops depending on utilization, 184 maximum user I/O pins, and PCI-compliant I/O signalling. The device supports in-circuit reconfigurability, allowing field upgrades without removing the part from the board. Its 0.42 µm CMOS process provides mature, well-characterized silicon with predictable timing closure. The 240-pin RQFP package with exposed pad offers robust through-hole-style PCB mounting suitable for legacy industrial and telecom backplane designs. The architecture combines a fine-grained logic element array with a continuous FastTrack interconnect routing fabric, providing predictable delay regardless of logic placement. The integrated PCI-compliant interface block supports 33 MHz PCI bus operation. Programming is performed through Altera's MAX+PLUS II development system, which supports VHDL, Verilog HDL, and waveform design entry, compilation, synthesis, simulation, and timing analysis. Typical applications include PCI bus interface cards, telecommunications backplane glue logic, industrial control and factory automation controllers, legacy computing expansion peripherals, and avionics/military retrofits where 5 V tolerant PLDs with long-term availability are required. The wide logic capacity and abundant registers make it well suited to bus arbitration, protocol conversion, and state-machine-heavy designs. When designing with this device, verify the configuration scheme (EPC configuration device or controller-based) and ensure decoupling capacitance meets the MAX+PLUS II power-budget guidelines. The exposed pad must be soldered to a thermal pad for reliable operation. Note that this device is a legacy 5 V part - confirm I/O compatibility with downstream 3.3 V logic before integration. This page synthesizes distributor pricing from DigiKey, Heisener, and Octopart, pin-compatible FLEX 8000 alternatives from the same Altera product family, and practical design notes not found in the manufacturer datasheet, providing decision-ready information for new designs and field-replacement scenarios.
EPF81188ARC240-3 - FLEX 8000 FPGA 12k Gates 184 I/O | Altera
The Altera (Intel Programmable Solutions Group) EPF81188ARC240-3 is a member of the FLEX 8000 family of CMOS programmable logic devices, integrating approximately 12,000 usable gates and 1,500 registers into a 240-pin RQFP (BFQFP) package. This commercial-temperature FPGA delivers 184 user I/O pins and operates from a 4.75 V to 5.25 V single supply, with in-circuit reconfigurability (ICR) that allows field updates via external configuration devices or intelligent controllers. The device is built on a 0.42 µm SRAM-based process and uses Look-Up Table (LUT) logic elements with FastTrack interconnect, making it suitable for high-density glue-logic, bus-interface, and system-control functions in legacy industrial and telecom designs. An FPGA (Field Programmable Gate Array) is a type of programmable logic device that combines thousands of configurable logic blocks (CLBs), programmable interconnects, and I/O cells into a single semiconductor. FPGAs sit in the hierarchy between simple PLDs and ASICs: they offer higher logic density than CPLDs while remaining reprogrammable like a PLD. The FLEX 8000 family specifically targets high-density register-rich designs where conventional PLDs run out of capacity, providing a register-to-logic ratio that is well-suited to state machines, datapath control, and pipelined logic. Key features of the EPF81188ARC240-3 include 12,000 typical usable gates, 1,500 flip-flops, 184 maximum user I/O pins, and four FastTrack interconnect rows for predictable timing. The device supports 5-V CMOS TTL-compatible I/O with tri-state and bus-hold options, and it is configured via a serial or parallel EPROM using Altera's BitBlaster or ByteBlaster download cables. It is supported by the MAX+PLUS II development environment for schematic, VHDL, and Verilog design entry. The commercial-grade speed grade "-3" positions it in the mid-speed tier of the FLEX 8000 family. Typical applications span industrial control backplanes, telecom line-card glue logic, legacy PCI bridge interfaces, and mid-density state-machine controllers. Because the part is mature and widely second-sourced through Rochester Electronics, it remains in service for long-lifecycle programs in aerospace, defense, and factory automation where redesign is undesirable. The 240-pin BFQFP (gull-wing) package uses a tray shipping format and offers reasonable thermal performance for moderate toggle rates. When designing with this FPGA, ensure that all VCCINT and VCCIO pins are decoupled with 0.1 µF ceramic capacitors placed within 5 mm of each supply pin, and that the configuration mode jumpers match the selected programming source. The JTAG-style BYPASS instruction must be selected correctly when chaining multiple FLEX devices on a single configuration cable.
EPF81188ARC240-4 - FLEX 8000 FPGA, 184 I/O, 240-BFQFP | Altera
The Altera (Intel) EPF81188ARC240-4 is a member of the FLEX 8000 FPGA family implementing 184 user I/O, 1008 logic elements (LEs), and roughly 16,000 usable gates in a 240-pin BFQFP (also called 240-RQFP, 32x32 mm) package. It is fabricated in a 5 V CMOS SRAM process and is speed-grade -4. An FPGA (Field-Programmable Gate Array) is a semiconductor device built from an array of configurable logic blocks (CLBs / LEs), programmable routing, and I/O cells. The FLEX 8000 series sits in the low-cost, register-rich segment of the Altera programmable-logic hierarchy, positioned between classic EPLDs and higher-density FLEX 10K devices. Designers use it to integrate glue logic, bus interfaces, and datapath state machines into a single re-programmable chip. Key features of the EPF81188ARC240-4 include 1008 logic elements (each containing a 4-input lookup table and a programmable register), 184 user I/O pins, in-circuit reconfigurability via external configuration devices or the IEEE 1149.1 JTAG interface, multiVolt I/O support for 3.3 V and 5 V mixed-voltage systems, and continuous FastTrack interconnect routing. The high-pin-count BFQFP-240 package allows integration of wide buses (32-bit and beyond) on a single device. The 4-input LUT architecture gives 16 possible logic functions per LE, and the embedded register enables single-cycle pipelined datapaths without consuming separate flip-flop resources. FastTrack continuous routing minimizes interconnect delay variance across the die, simplifying static timing closure. The device supports both serial and parallel configuration modes, plus JTAG-based boundary-scan test. Typical applications include data-path manipulation, digital signal processing front-ends, telecommunications glue logic, industrial control interfaces, and replacement of multiple discrete TTL/CMOS glue-logic ICs. The 184 I/O and 16K-gate density make it suitable for bridging between microprocessors, memory, and peripheral buses in mid-complexity embedded systems. When designing with this device, budget for an external configuration EPROM (such as the Altera EPC1/EPC2) unless JTAG-only configuration is acceptable. The 5 V core supply (4.75 V to 5.25 V) and I/O bank voltages must be decoupled with 0.1 uF and 10 uF capacitors placed close to each VCC pin. For new designs, evaluate Altera Cyclone or Lattice ispMACH equivalents, because FLEX 8000 is a mature family nearing end-of-life with limited long-term supply. This page synthesizes distributor pricing, same-package FLEX 8000 drop-in alternatives, and practical design notes not consolidated in the original manufacturer datasheet.
EPF81188ARC240-4AA - FLEX 8000 FPGA 184 I/O 240-RQFP | Intel
The Intel (formerly Altera) EPF81188ARC240-4AA is a member of the FLEX 8000 family of SRAM-based Field-Programmable Gate Arrays (FPGAs) housed in a 240-pin RQFP (Plastic Quad Flat Pack) package. The device integrates 184 user I/O pins and approximately 12,000 usable logic elements (provided by 1,008 Logic Elements per the FLEX 8000 architecture baseline), making it suitable for high-density glue-logic, bus-interface, and DSP pre-processing tasks in legacy industrial designs. An FPGA (Field-Programmable Gate Array) is a type of programmable logic device that combines the integration density of a gate array with the design flexibility of in-system programmability. FPGAs sit at the top of the programmable logic hierarchy, above CPLDs and SPLDs, and are widely used for parallel data-path implementation, custom state machines, and hardware-accelerated algorithms. The FLEX 8000 family in particular uses a fine-grained Look-Up-Table (LUT) based architecture with continuous FastTrack interconnect, optimized for high I/O count and predictable timing. Key features of the EPF81188ARC240-4AA include CMOS SRAM configuration cells for unlimited re-programmability, JTAG-based boundary-scan test support, and compatibility with Altera EPC1, EPC1064, EPC1213, and EPC1441 serial configuration devices. The device supports both serial and parallel configuration modes via a dedicated configuration controller, allowing bitstreams to be loaded from EPROM, system memory, or a microprocessor. Internal configuration clocking handles the entire configuration sequence automatically at power-up. Architecturally, the EPF81188ARC240-4AA is built around Lab/Logic Array Blocks (LABs) interconnected by the FastTrack row/column routing network, providing predictable delay characteristics for synchronous designs. Each LAB contains multiple Logic Elements (LEs), each consisting of a 4-input LUT, a programmable flip-flop, and dedicated carry and cascade chains for efficient arithmetic and wide-function implementation. Typical applications include telecommunications line-card glue logic, industrial control backplanes, parallel bus bridges, and ASIC prototyping. The 240-RQFP package is preferred for designs that need high I/O count without resorting to fine-pitch BGA assembly, allowing assembly on cost-effective 2-layer through-hole-compatible boards when paired with adapter footprints. When designing with this part, ensure the configuration interface is correctly selected for the chosen EPC device and that CONF_DONE is properly monitored at system power-up. Be aware that the EPF81188ARC240-4AA has reached end-of-life status from the original manufacturer and is primarily supported via the secondary/aftermarket channel; engineers should plan for long-term component availability risk. This page synthesizes distributor pricing, package details, and same-brand drop-in alternatives from the FLEX 8000 family to support both new design and legacy-maintenance use cases, providing information gain beyond the original datasheet.
EPF81188ARC240-5 - FLEX 8000 FPGA, 1008 LEs, PQFP-240 | Altera
The Altera EPF81188ARC240-5 is a member of the FLEX 8000 family of SRAM-based, loadable programmable logic devices, featuring 1008 logic elements (LEs) and 1184 flip-flops housed in a 240-pin Plastic Quad Flatpack (PQFP) package with 0.500 mm terminal pitch. The device integrates programmable logic array blocks, an embedded interconnect network, and configurable I/O supporting both 3.3 V and 5 V signaling standards, making it adaptable to mixed-voltage system designs. Its CMOS SRAM configuration cells allow in-system reconfiguration and rapid design iteration. What is a FLEX 8000 FPGA? FLEX (Flexible Logic Element Matrix) 8000 is Altera's classical SRAM-based FPGA architecture introduced in the 1990s as part of the programmable logic device hierarchy. FPGAs (Field-Programmable Gate Arrays) belong to the broader category of programmable logic devices (PLDs), which sit between fixed-function ASICs and discrete logic in terms of flexibility and integration. FPGAs contain configurable logic blocks, programmable routing, and I/O cells whose function is defined by configuration bitstreams loaded at power-up. FPGAs are used wherever custom digital logic is required without the NRE cost of an ASIC. Key features include 1008 logic elements, 1184 flip-flops, configurable I/O supporting 3.3 V or 5 V operation, and CMOS SRAM-based configuration. The -5 speed grade indicates a propagation delay of approximately 5 ns through the internal logic, suitable for moderate-speed control and glue-logic applications rather than high-throughput data-path designs. The high-pin-count PQFP-240 package supports integration of multiple 32-bit buses in a single device, simplifying board layout in legacy and industrial systems. The EPF81188ARC240-5 architecture combines a logic element matrix with continuous FastTrack interconnect, providing predictable timing and efficient routing for designs up to the device's logic capacity. Configuration data is loaded from a system controller, an Altera serial configuration device, or an industry-standard parallel EPROM, supporting both standalone and multi-device configuration chains. SRAM cells enable field-upgradable firmware and rapid prototyping across design revisions. Typical applications include industrial control and instrumentation, telecommunications glue logic, legacy interface bridging, military and aerospace control systems, prototyping platforms, and bus-interface consolidation. The 3.3 V/5 V dual-voltage I/O is particularly valuable when interfacing legacy TTL peripherals with newer low-voltage ASICs. When designing with the EPF81188ARC240-5, note that the FLEX 8000 family is mature and approaching end-of-life status. Engineers targeting new designs should evaluate whether Cyclone or MAX series parts better meet long-term availability and performance requirements. For maintenance of existing systems, the part remains programmable using Altera/Quartus legacy tools. This page synthesizes distributor pricing, drop-in alternatives, lifecycle data, and design guidance not consolidated in the original Altera datasheet, providing a single reference for engineers managing long-lifecycle industrial and military systems.
EPF81188ARC240-6 - FLEX 8000 FPGA, 1008 LE, 240-PQFP | Altera
The Altera EPF81188ARC240-6 is a CMOS SRAM-based member of the FLEX 8000 programmable logic family, providing 1008 logic elements (LEs) and 1184 flip-flops in a 240-pin Plastic Quad Flat Pack (PQFP / RQFP-240) package with -6 speed grade. It is a loadable PLD designed for glue-logic integration, custom state-machine implementation, and mid-complexity parallel datapath consolidation where ASIC NRE cost is not justified. An FPGA (Field-Programmable Gate Array) is a semiconductor device whose logic function is defined after PCB assembly by loading a configuration bitstream into on-chip SRAM. FPGAs sit in the programmable-logic branch of the digital IC taxonomy, above simple PLDs (PAL/GAL) and below fixed-function ASICs in cost-per-unit, offering the highest density and routing flexibility within the programmable family. The FLEX 8000 series specifically targets 5V-tolerant, SRAM-based designs and is suitable for prototyping and low-to-mid volume production. Key features include 1008 logic elements organized into Logic Array Blocks (LABs), 1184 dedicated flip-flops, a typical gate count range suited for bus-interface and peripheral-aggregation designs, 5V-tolerant I/O buffers in legacy applications, and SRAM-based in-system reconfigurability via the serial configuration interface. The device uses continuous FastTrack interconnect routing to provide predictable timing across logic blocks and supports both serial and parallel configuration schemes using Altera MAX+plus II or Quartus design tools. Architecturally, the EPF81188ARC240-6 uses Altera's MultiCore architecture with four-input look-up tables (LUT4) per logic element, dedicated carry chains for arithmetic, and a registered I/O cell architecture. The -6 speed grade places it in the mid-speed tier of the FLEX 8000 family - slower than -3/-4 grades but offering higher margins at extended temperature ranges and reduced dynamic power at equivalent logic density. Typical applications include custom bus-interface bridges, peripheral controllers in industrial backplanes, glue logic replacing multiple 74-series discrete gates, retrofits of legacy PLD designs needing higher density, and educational or evaluation platforms demonstrating SRAM-FPGA concepts. It is commonly found in telecom line cards, factory automation controllers, and instrumentation front-ends where 5V tolerance simplifies mixed-rail designs. When designing with the EPF81188ARC240-6, verify that the 240-PQFP footprint matches the existing PCB land pattern. Note that FLEX 8000 devices require an external configuration EPROM (e.g., EPC2 or EPC16) or a microcontroller to load the bitstream on power-up - the configuration interface is not on-chip flash. Confirm Quartus or MAX+plus II tool support remains available for the chosen design flow. This page synthesizes distributor pricing, same-package drop-in alternatives, and design notes for legacy Altera FLEX 8000 designs not typically aggregated on major distributor catalog pages.
EPF81188ARI240-4 - FLEX 8000 FPGA, 12K Gates, 240-RQFP | Intel
The Intel (formerly Altera) EPF81188ARI240-4 is a FLEX 8000 family CMOS programmable logic device (PLD) delivering 12,000 usable gates, 1,008 logic elements (LEs), and 184 user I/O pins in a 240-pin RQFP package. Built on a 0.42 µm CMOS process, it operates at 5 V with a maximum internal frequency of 125 MHz and is rated for the industrial temperature range. The '-4' speed grade designates the slowest of the FLEX 8000 commercial/industrial speed bins. A Field-Programmable Gate Array (FPGA) is a semiconductor integrated circuit containing an array of configurable logic blocks (CLBs), programmable interconnect, and I/O cells that the user can define after manufacture. Within the broader taxonomy, FPGAs sit alongside CPLDs (Complex Programmable Logic Devices) as the two main classes of programmable logic; the FLEX 8000 family is positioned as a low-cost, high-density, register-rich SRAM-based PLD targeting data-path and DSP workloads. The EPF81188ARI240-4 is the largest density member of the FLEX 8000 family, and like all SRAM FPGAs in this family it is in-circuit reconfigurable (ICR) via an external configuration EPROM such as the EPC1 or EPC2. Key features include 12K usable gates, 1,008 logic cells (each containing a compact 4-input LUT and a programmable register), 184 user I/O pins, dedicated high-speed carry chains for arithmetic, and a continuous FastTrack interconnect routing network. The architecture supports cascaded adders, multipliers, and wide datapath functions in a single device. Configuration can be loaded serially or in parallel modes, and JTAG (IEEE 1149.1) boundary-scan test is supported. The FLEX 8000 architecture uses a continuous routing network that delivers predictable timing across the device. Logic elements (LEs) pair a 4-input LUT with a programmable register and dedicated carry logic, allowing efficient implementation of adders, counters, and state machines. The 0.42 µm CMOS SRAM-based configuration memory enables unlimited re-programmability but requires a configuration EPROM on every power-up. MultiVolt I/O supports 5.0 V and 3.3 V interface signaling to surrounding ASICs and microprocessors. Typical applications include digital signal processing (DSP) datapaths, wide-data-path manipulation, glue logic replacement, bus interface bridging, and prototype ASIC emulation. The 240-pin RQFP package provides enough I/O to integrate multiple 32-bit buses in a single device, making the part suitable for telecommunications backplane glue logic and industrial control boards. When designing with this device, remember that it is an older 5 V SRAM FPGA that requires a configuration EPROM on every board and does not support modern JTAG-based on-the-fly reconfiguration from a microcontroller. Engineers migrating to newer designs should evaluate Cyclone, MAX II, or Lattice ispMACH equivalents for active projects. This page synthesizes distributor pricing, drop-in same-package alternatives from the Site MPN library, and practical design notes not found in the manufacturer datasheet.
EPF81500AGC280-3 - FLEX 8000 FPGA 16K Gates 280-CPGA | Intel
The Intel (formerly Altera) EPF81500AGC280-3 is a high-density CMOS programmable logic device from the FLEX 8000 family, delivering up to 16,000 usable gates and 1,500 registers in a 280-pin Ceramic Pin Grid Array (CPGA) package. Operating at 5V with a 0.42 µm process technology, it provides 1.8 ns pin-to-pin propagation delay and a maximum internal clock frequency of 385 MHz, suitable for high-performance register-rich designs. The 280-CPGA package offers a square ceramic metal-sealed cofired body designed for through-hole mounting and high-reliability applications. A Field-Programmable Gate Array (FPGA) is a semiconductor device built around an array of configurable logic blocks (CLBs) connected by programmable interconnect. FPGAs sit within the broader taxonomy of programmable logic devices (PLDs) -> logic ICs -> integrated circuits. The FLEX 8000 family, introduced by Altera in the 1990s, was register-rich and SRAM-based, targeting system-level integration and in-circuit reconfigurability (ICR). This generation preceded modern SRAM-based FPGAs and is now classified as legacy hardware by Intel, which acquired Altera in 2015. Key features include 1296 logic cells, a maximum internal frequency of 125 MHz in some datasheet figures, 204 I/O outputs, in-circuit reconfigurability via external configuration devices or intelligent controllers, and a commercial 0°C to +70°C operating range. The device supports system-level features including JTAG boundary-scan test, multi-volt I/O compatibility, and built-in JTAG-based reconfiguration. The FLEX 8000 architecture enables designers to integrate wide bus functions and complex state machines on a single chip. Typical applications include legacy telecom switching systems, industrial control logic, prototyping glue logic for microprocessor systems, and embedded designs requiring high register count. The 280-CPGA package also made it popular in aerospace, military, and high-reliability through-hole designs where surface-mount BGA packages were unsuitable. Engineers working with industrial retrofits often specify the EPF81500AGC280-3 to maintain long-lifecycle designs already in field deployment. When designing with this device, verify configuration memory requirements and supply decoupling. The FLEX 8000 family requires an external EPROM or microcontroller for SRAM-based configuration at every power-up. The commercial temperature grade limits this variant to benign environments; the EPF81500AGI280-3 industrial variant is preferred for extended-temperature designs. Designers should also consider that this part is now classified as legacy, and modern alternatives from Intel's Cyclone or MAX families offer higher density at lower cost. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
EPF81500AGC280-4 - FLEX 8000 CPLD, 1500 Gates | Intel / Altera
The Altera (now Intel) EPF81500AGC280-4 is a member of the FLEX 8000 family of CMOS complex programmable logic devices (CPLDs), delivering up to 16,000 usable gates and 1,500 registers in a 280-pin CPGA (Ceramic Pin Grid Array) package. It operates at a maximum clock frequency of 357 MHz and provides 208 user I/O pins plus 4 dedicated inputs, making it suitable for system-level integration and glue-logic applications. 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 matrix. CPLDs typically offer fast deterministic pin-to-pin propagation delays (single-digit to low-double-digit nanoseconds), in-system programmability via JTAG, and high fan-in. Within the broader programmable logic taxonomy, CPLDs sit alongside FPGAs (higher density, register-rich, SRAM-based) and SPLDs (simpler PAL/GAL-style). The FLEX 8000 family uses a continuous, SRAM-based interconnect fabric with FastTrack routing, which is one of the early Altera architectures that predates the modern MAX II / MAX V non-volatile CPLD families. Key features include in-circuit reconfigurability (ICR) via external configuration devices or intelligent controllers, 4 dedicated inputs, 208 I/O lines, and a -4 speed grade designation that places the part in the lower-delay tier of the FLEX 8000 family. The 280-pin CPGA ceramic package provides high reliability and is suitable for demanding thermal and mechanical environments. The device's 1,500 registers and high gate count enable implementation of wide datapath glue logic, bus interfaces, and state machines. Technically, the EPF81500AGC280-4 uses a CMOS SRAM-based architecture that requires an external configuration EPROM or controller at every power-up. This contrasts with flash-based or antifuse CPLDs that retain configuration without external memory. The SRAM cells drive lookup tables and registers organized in logic array blocks (LABs) interconnected via FastTrack continuous routing rows and columns. I/O pins support TTL and CMOS standards with programmable drive strengths. Typical applications include telecom line cards, industrial control, ASIC prototyping, bus-bridging glue logic between microprocessors and peripherals, and legacy system upgrades where Altera FLEX 8000 designs are already deployed. The 357 MHz maximum internal frequency supports high-speed pipeline designs. When designing with this part, ensure the JTAG chain and configuration memory (typically an EPC1 or EPC2 configuration device) are correctly wired. The CPGA package requires through-hole PCB sockets or careful hand-soldering, so plan board layout and assembly process accordingly. This page synthesizes distributor pricing, drop-in same-family alternatives from the FLEX 8000 family, and CPGA-package design considerations not always summarized on a single manufacturer page.