FPGA & CPLD
Produits (6666)
EPF8282ATI100-3N - 2.5K FLEX 8000 FPGA, 78 I/O, 100-TQFP | Altera
The Intel (formerly Altera) EPF8282ATI100-3N is a member of the FLEX 8000 family of CMOS SRAM-based Field-Programmable Gate Arrays (FPGAs) delivering 2,500 usable gates with 208 logic cells, packaged in a 100-pin Thin Quad Flat Pack (TQFP) and specified for the industrial 0C to +70C operating range. The device is built on a 0.42 um CMOS SRAM process and is rated for a 125 MHz internal operation with a 5V core supply. According to the FLEX 8000 datasheet family, the EPF8282ATI100-3N integrates 78 user I/Os across six Logic Array Blocks (LABs) and supports 5.0V-tolerant outputs through its VCCIO pins, which can be tied to either 3.3V or 5.0V rails depending on downstream interface requirements. An FPGA is a programmable logic device that combines the density of a gate array with the design flexibility of in-system reprogrammability. The FLEX 8000 family sits in the broader taxonomy as: FPGA -> Programmable Logic -> Logic IC -> Integrated Circuit -> Semiconductor. SRAM-based FPGAs like the EPF8282 use volatile configuration memory that must be loaded from an external boot source (typically an Altera EPC1, EPC1064, EPC1213, or EPC1441 serial configuration device, or an industry-standard parallel EPROM) at every system power-up, which is why they support in-circuit reconfigurability (ICR) for field updates. Key features include 78 user I/O pins, 208 logic elements organized into 26 LABs, 125 MHz performance, and a 5V core supply with multi-voltage I/O support. The device supports JTAG-based boundary-scan testing per IEEE 1149.1 and provides built-in configuration schemes via the Altera EPC series of serial configuration memories. As a member of the FLEX 8000 family, it shares the same architecture as other EPF8282 speed/package variants, allowing engineers to scale designs across density and temperature grades without changing their HDL source. The FLEX 8000 architecture uses a hierarchical interconnect scheme with fast-row and fast-column channels, a feature-rich Logic Element (LE) containing a 4-input look-up table, a programmable register, and dedicated carry and cascade chains for arithmetic and wide fan-in functions. Configuration bitstream loading is handled by dedicated pins (nSTATUS, CONF_DONE, nCONFIG, DCLK) that interface directly to an EPC serial configuration device, eliminating the need for an external microcontroller. Typical applications include glue logic replacement, bus interfacing (PCI, ISA, VME bridges), state-machine and control logic, custom peripherals for legacy 5V embedded systems, telecommunications control boards, and industrial automation controllers. Because the part is specified for 0C to +70C, it is best suited for commercial and industrial indoor environments rather than automotive or extended-temperature deployments. When designing with the EPF8282ATI100-3N, ensure that the 5V VCCINT and the VCCIO rails are decoupled with 0.1 uF ceramic capacitors placed within 5 mm of each supply pin, and route all configuration pins (nSTATUS, nCONFIG, DCLK, CONF_DONE) away from switching signals to prevent false configuration during power-up. This page synthesizes distributor stock levels, drop-in speed-grade alternatives within the FLEX 8000 family, and practical design notes that go beyond the manufacturer datasheet, including pinout mapping for the 100-TQFP package and industrial-grade vs commercial-grade selection criteria.
EPF8282ATI100-3NGZ - FLEX 8000 FPGA 78 I/O 100-TQFP | Altera
The Altera (Intel Programmable Solutions Group) EPF8282ATI100-3NGZ is a member of the legacy FLEX 8000 family of Field-Programmable Gate Arrays, fabricated on a 0.42 µm CMOS SRAM-lookup-table architecture and offered in a 100-pin Thin Quad Flat Pack (TQFP) package. The device integrates 208 logic cells organized into 26 Logic Array Blocks (LABs), delivers approximately 2,500 usable gates, and exposes 78 user I/O pins. The "-3" speed grade targets a maximum flip-flop toggle frequency of 125 MHz at 5 V core supply. An FPGA (Field-Programmable Gate Array) is a semiconductor device built around an array of configurable logic blocks (CLBs/LABs) interconnected by a programmable routing matrix. The FLEX 8000 family belongs to the first-generation SRAM-based programmable logic hierarchy, sitting between simple PLDs and modern high-density FPGAs. After Altera's 2015 acquisition by Intel, the family has been formally classified as mature/obsolete; the manufacturer recommends migration to MAX 10 or Cyclone IV families for new designs. Key features of the EPF8282ATI100-3NGZ include SRAM-based configuration (allowing in-system re-programmability), 78 general-purpose I/Os, dedicated input registers, fast continuous interconnect (FastTrack), and JTAG-compliant boundary-scan test support per IEEE 1149.1. The device is well suited to glue-logic, bus-interface bridging, and state-machine consolidation tasks that previously required multiple 74-series TTL parts. From an architectural standpoint, the FLEX 8000 LAB combines 8 logic cells with a local interconnect that feeds the row and column FastTrack routing. Each logic cell contains a 4-input LUT, a programmable flip-flop, and dedicated carry/cascade chains. Configuration bitstream is loaded from an external EPROM or via JTAG, with the device entering user mode once all frames are loaded. Typical applications include industrial glue logic, legacy peripheral replacement (bus bridges such as ISA-to-local bus), prototyping of medium-complexity state machines, factory automation controllers, and educational FPGA platforms. The 100-pin TQFP footprint also makes the part attractive for hand-soldered prototypes and through-hole-friendly designs where a BGA would be impractical. When designing with this part, supply decoupling is critical: place 0.1 µF ceramic capacitors on every VCCINT/VCCIO pin and use a bulk 33 µF tantalum near the package. PCB traces carrying high-speed clocks must be length-matched and isolated from switching I/O. Because the FLEX 8000 family is now NRND/obsolete, designers should verify long-term availability before committing to new production. This page synthesizes distributor pricing, FLEX 8000 family positioning, and migration guidance to MAX 10/Cyclone IV alternatives not all collated in a single manufacturer document.
EPF8282ATI100-3S - FLEX 8000 FPGA, 2.5K Gates, 100-TQFP | Intel / Altera
The Intel (formerly Altera) EPF8282ATI100-3S is a member of the FLEX 8000 family of CMOS Field-Programmable Gate Arrays (FPGAs), housed in a 100-pin TQFP package with industrial-grade temperature rating. Per the manufacturer datasheet, this device delivers approximately 2,500 usable gates, 208 logic cells, 26 Logic Array Blocks (LABs), and 78 user I/Os, operating from a 5 V supply with a maximum toggle rate near 125 MHz. What is an FPGA? An FPGA (Field-Programmable Gate Array) is a semiconductor IC containing an array of configurable logic blocks (CLBs/LABs), programmable interconnect, and configurable I/O cells that designers can wire up to implement arbitrary digital logic after manufacture. FPGAs sit in the broader hierarchy of programmable logic devices (PLD) -> CPLD -> FPGA -> semiconductor IC, and are chosen over fixed-function ASICs when time-to-market, in-field reconfigurability, or low-volume economics matter more than per-unit die cost. Key features of the EPF8282ATI100-3S include in-circuit reconfigurability (ICR), a register-rich architecture, JTAG-based IEEE Std 1149.1 boundary-scan test support, and pin-compatible variants across speed grades and packages. The 'A' prefix indicates the 100-pin TQFP (thin quad flat pack) package, the 'I' suffix indicates the industrial temperature range (-40C to +85C), the '100' indicates 100 pins, the '-3' is the speed grade, and the trailing 'S' typically denotes a specific ordering/tray option per the Altera ordering scheme. Technically, the FLEX 8000 family uses a continuous, SRAM-based interconnect fabric with FastTrack routing. Look-up tables implement combinatorial logic, dedicated registers provide sequential logic, and I/O elements support TTL/CMOS interface standards. The 5V core supply simplifies integration into legacy industrial designs where 3.3V-only FPGAs are unsuitable. Typical applications include glue logic replacement, industrial control and instrumentation, communication interface bridging (UART, SPI, parallel bus), legacy 5V system prototyping, and test equipment. The wide operating voltage margin makes the EPF8282ATI100-3S especially attractive for retrofit designs migrating older discrete-logic or PAL/GAL-based boards onto a single reconfigurable device. When designing with this part, verify the device is still supported by your chosen toolchain (Quartus II 13.0 or earlier MAX+PLUS II), budget JTAG programming access in the PCB layout, and provide a robust 5V decoupling network (typically 0.1 uF and 10 uF near each VCC pin group). This page synthesizes distributor stock signals, drop-in pin-compatible alternatives from the same FLEX 8000 family, and practical design notes not consolidated in a single place in the manufacturer datasheet.
EPF8282ATI100-4N - FLEX 8000 FPGA, 208 LE, 100-Pin TQFP | Intel / Altera
The Intel / Altera EPF8282ATI100-4N is a member of the FLEX 8000 family of CMOS SRAM-based programmable logic devices, delivering 208 logic elements (LEs) and 282 flip-flops in a 100-pin TQFP (S-PQFP-G100) industrial-temperature package. The device features a 5 V core supply, in-system programmability via an EPROM/EEPROM controller, and is built on a 0.42 µm CMOS process with four-sided I/O flexibility. This part corresponds to the -4 speed grade, the slowest of the FLEX 8000 family grades, traded off for the lowest unit cost. What is a FLEX 8000 FPGA? The FLEX 8000 (Flexible Logic Element matriX) is a family of SRAM-based programmable logic devices originally introduced by Altera in the mid-1990s. Within the broader hierarchy, FLEX 8000 devices are classified as CPLD/FPGA hybrids (sometimes called "erasable programmable logic devices" or EPLDs) sitting between classic PLDs and modern FPGAs. They provide look-up-table based logic, continuous interconnect, and SRAM configuration memory, differentiating them from non-volatile CPLD families such as MAX 7000. Key features include 208 logic elements, 282 flip-flops, a maximum of 78 user I/O pins, 5 V tolerant I/O with PCI compatibility, and a continuous, fast-track interconnect fabric. The device supports JTAG boundary-scan testing (IEEE 1149.1), configurable I/O standards, and is available in commercial (0°C to 70°C) or industrial (-40°C to 85°C) temperature grades. The -4N suffix indicates an industrial operating range. Architecturally, the EPF8282A uses logic array blocks (LABs), each containing 8 LEs and a local interconnect. The FastTrack Interconnect provides row and column channels for signal routing, while embedded logic cells implement combinatorial and registered functions. The chip supports a system clock from a dedicated input or any user I/O. Typical applications include industrial control glue logic, telecom interface adapters, PCI bus bridges, and legacy system replacements. The FLEX 8000 series is suitable where SRAM-based re-programmability is required but power budget is tight. When designing with this device, note that the FLEX 8000 family is now NRND/obsolete - Intel recommends migration to the MAX 10 series or Cyclone IV series for new designs. Existing users can verify pinout and timing against the original datasheet and use Altera Quartus II version 13.0 or earlier for legacy support. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
EPF8282AVTC100-3 - FLEX 8000 FPGA 78 I/O 100-TQFP | Altera
The Altera EPF8282AVTC100-3 is a member of the FLEX 8000 family of CMOS SRAM-based Field Programmable Gate Arrays (FPGAs), offering 78 user I/O pins, 208 logic elements, 2.5K equivalent gates, and a -3 speed grade in a 100-pin TQFP (14x14 mm) package. It operates from a single 4.75V to 5.25V supply and is fabricated on a 0.42 µm CMOS process delivering typical toggle rates up to 125 MHz. An FPGA is a semiconductor device containing an array of configurable logic blocks (CLBs), programmable interconnect, and I/O cells that can be re-programmed to implement arbitrary digital logic. FPGAs sit between discrete logic ICs and ASICs in the design hierarchy, offering higher integration than glue logic, faster time-to-market than masked ASICs, and lower per-unit cost than full-custom designs. The FLEX 8000 family specifically targets high-density register-rich designs with predictable timing and in-system reconfigurability. Key features include in-circuit reconfigurability via Altera EPC1, EPC1064, EPC1213, and EPC1441 configuration devices, four dedicated input pins, JTAG boundary-scan support, and tri-state output buffers with programmable slew rate. The -3 speed grade specifies a 6 ns typical propagation delay through logic elements, making the device suitable for moderate-speed control, glue-logic, and bus-interface applications. The 100-pin TQFP package supports standard surface-mount assembly flows and provides a robust industrial footprint. The architecture combines fine-grained Look-Up Tables (LUTs) with FastTrack interconnect for deterministic routing delays. Each Logic Element (LE) contains a 4-input LUT, a programmable register, and dedicated carry and cascade chains for arithmetic and wide-function operations. The 208-cell logic capacity yields approximately 2,500 usable gates, positioning the EPF8282 between small CPLDs and larger FPGAs and giving designers headroom to consolidate multiple discrete logic devices into a single programmable part. Typical applications include industrial control logic, glue-logic consolidation, bus-interface bridges (PCI, ISA, VME), DSP co-processing front-ends, and legacy system upgrades where pin-compatible replacement of discrete 74LS/74F logic is needed. The SRAM-based configuration means the design must be loaded at every power-up, typically from a serial configuration PROM. When designing with this part, allow at least 50 ms of configuration time at power-on before the device becomes active, ensure the 5V supply stays within 4.75V-5.25V under transients, and provide 0.1 µF decoupling capacitors adjacent to every VCC pin. JTAG pins (TCK, TMS, TDI, TDO, TRST) should be pulled or terminated per the IEEE 1149.1 standard for reliable boundary-scan operation. This page synthesizes Altera FLEX 8000 datasheet parameters, distributor stock and pricing as of 2026-09-12, drop-in alternative MPNs, and practical design notes not aggregated on a single distributor page, providing engineers an independent reference for sourcing and replacement decisions.
EPF8282AVTC100-4 - FLEX 8000 FPGA 2.5K Gates | Altera | 100-TQFP
The Altera EPF8282AVTC100-4 is a member of the FLEX 8000 family of CMOS SRAM-based Field Programmable Gate Arrays (FPGAs), delivering approximately 2,500 usable gates with 208 logic cells in a 100-pin TQFP package. It operates on a 4.75 V to 5.25 V supply, runs at a maximum internal frequency of 125 MHz in the -4 speed grade, and is built on a 0.42 µm CMOS process technology. The device provides 78 user I/O pins, four dedicated inputs, and is configured at system power-up via an industry-standard parallel EPROM, an Altera EPC1/EPC1064/EPC1213/EPC1441 serial configuration device, or a system controller. What is an FPGA? An FPGA (Field Programmable Gate Array) is a programmable logic device that allows engineers to implement custom digital circuits by configuring an array of logic cells, routing channels, and I/O blocks after manufacture. FPGAs sit at the top of the programmable logic hierarchy: programmable logic devices (PLD) include simple PLDs (SPLD), complex PLDs (CPLD), and FPGAs, with FPGAs offering the highest logic density and richest interconnect. The FLEX 8000 family belongs to Altera's first-generation high-density SRAM-based FPGA line, which historically targeted glue-logic replacement, bus-interface bridging, and DSP preprocessing before being succeeded by the Cyclone and later families. Key features include 282 flip-flops (logic elements with register capability), tri-state buffer capability on every I/O pin, multi-volt I/O support (3.3 V and 5 V interfacing), and an SRAM-based configuration that allows in-system reconfiguration. The -4 speed grade places this part in the second-fastest tier of the family, with internal toggle rates reaching the 125 MHz mark specified in the FindIC comparison data. Architecturally, the FLEX 8000 family implements a fine-grained logic element (LE) array with continuous FastTrack interconnect routing, optimized for predictable timing closure. Each LE contains a 4-input look-up table, a programmable flip-flop, and dedicated carry and cascade chains, enabling efficient implementation of arithmetic and wide gating functions at moderate logic densities. Typical applications include 32-bit bus integration (multiple buses on a single device), peripheral glue logic in 5 V industrial systems, custom interface bridges (PCI, ISA, VME), DSP pre-processing front-ends, and legacy telecom/datacom equipment. The 100-TQFP (14 × 14 mm) form factor is friendly for hand-prototyping and low-volume industrial designs. When designing with this device, note that the EPF8282AVTC100-4 is a legacy/obsolete part - designers should verify long-term availability through franchised distributors (Rochester Electronics is a common authorized aftermarket source) and consider the modern Cyclone IV or Cyclone 10 LP families as new-design alternatives using adapter boards or board re-spins. This page synthesizes distributor pricing, drop-in alternatives within the FLEX 8000 family, and practical legacy-design guidance that the manufacturer datasheet alone does not provide.
EPF8452AGC160-3 - FLEX 8000 FPGA, 5K Gates, 160-PQFP | Altera
The Altera (Intel) EPF8452AGC160-3 is a member of the FLEX 8000 family of CMOS SRAM-based FPGAs, providing approximately 4,000 usable gates, 336 logic elements (LEs), and 120 I/O pins in a 160-pin Plastic Quad Flat Pack (PQFP/BQFP) package. The device operates from a 4.75 V to 5.25 V supply and is specified over the commercial 0 C to +70 C temperature range. The "-3" speed grade designates one of the faster FLEX 8000 timing options, suited for designs where toggle-rate or setup-time margin matters more than absolute minimum propagation delay cost. A Field Programmable Gate Array (FPGA) is a programmable logic device (PLD) containing an array of configurable logic blocks (CLBs), programmable interconnect, and programmable I/O cells. FPGAs sit at the top of the PLD hierarchy above SPLDs and CPLDs in logic density, and below ASICs in per-unit cost at very high volumes. The FLEX 8000 family specifically introduced Altera's look-up-table (LUT)-based architecture with FastTrack continuous routing, which was the architectural foundation for the later FLEX 10K, APEX, and Cyclone families. Within the broader integrated-circuit taxonomy, the EPF8452AGC160-3 belongs to the programmable-logic > FPGA > SRAM-based FPGA chain. Key features of the EPF8452AGC160-3 include in-circuit reconfigurability (ICR) via external configuration devices or the IEEE 1149.1 JTAG interface, four low-skew global clock networks, and 120 user I/O pins capable of supporting LVTTL, LVCMOS, and PCI-compatible signaling. The device integrates 3,168 logic cells across 336 LEs and provides dedicated carry-chain resources for high-speed arithmetic. Embedded array blocks (EABs) are not present in FLEX 8000, distinguishing it from the later FLEX 10K family. Typical applications include industrial glue logic, telecommunications line-card controllers, bus-interface bridges, and legacy system prototyping where the FLEX 8000 architecture was broadly adopted. The wide commercial temperature range and 5 V tolerance make the EPF8452AGC160-3 well suited for insertion into older 5 V backplanes without level translators. The 160-PQFP footprint also allows hand-soldering and rework, which simplifies low-volume or repair scenarios. When designing with this device, treat the configuration interface as part of the system power-up sequencing plan: an EPC configuration PROM or JTAG programmer must drive CONF_DONE high before the FPGA releases its I/O. Unused I/O pins should be left floating or driven per the application note to minimize in-rush current. The 160-PQFP package has moderate thermal resistance, so high-utilization designs above ~70% of LEs may benefit from 200 LFM of airflow.
EPF8452AGC160-3N - FLEX 8000 FPGA 4K Gates 125MHz 5V 160-CPGA | Altera
The Altera EPF8452AGC160-3N is a member of the FLEX 8000 FPGA family, delivering 4K usable gates, 336 logic cells, and a 125MHz system performance in a 160-pin Ceramic Pin Grid Array (CPGA) package. Fabricated on a 0.42 micron CMOS process, this device operates from a single 5V supply (4.75V to 5.25V) and is qualified for commercial 0C to +70C operation. A Field Programmable Gate Array (FPGA) is a semiconductor device built around an array of configurable logic blocks (CLBs), interconnected via a programmable routing fabric, surrounded by programmable I/O cells. FPGAs sit above programmable logic devices (PLDs/CPLDs) and below ASICs in the design complexity hierarchy, offering hardware-level parallelism for glue logic, state machines, and small-to-medium datapath acceleration without the NRE cost of an ASIC. The FLEX 8000 family specifically targets register-rich, low-cost, high-density applications where ICR (in-circuit reconfigurability) via external configuration devices is desired. Key features of the EPF8452AGC160-3N include in-circuit reconfigurability, a register-rich architecture with up to 1,500 flip-flops per device family member, JTAG-compliant boundary-scan (IEEE 1149.1) support, and multi-voltage I/O capability. The 5V core supply with 5V-tolerant I/Os simplifies interfacing to legacy TTL/CMOS logic without level shifters. The CPGA-160 ceramic package is chosen for high-reliability industrial, military, and aerospace programs where plastic QFPs would not survive thermal or mechanical stress. Architecturally, the device uses Altera's classic Look-Up Table (LUT) based logic element with a continuous routing network. The 125MHz performance rating applies to 16-bit counter / register-rich designs and reflects typical fitter output at room temperature. Configuration is loaded from an external EPROM (e.g., EPC1, EPC2) or via JTAG, with the -3N speed grade and 5V VCCIO placing it at the higher end of the FLEX 8000 performance tier. Typical applications include industrial control and instrumentation glue logic, telecommunications interface cards, prototyping for ASIC migration, legacy Avionics and military systems requiring ceramic-package FPGAs, and telecom glue logic bridging between microprocessors and DSPs. The wide-gate-count range (4K to 16K usable gates across the family) lets designers scale up within the same toolchain (MAX+PLUS II or Quartus). When designing with this device, account for 5V supply decoupling at the CPGA socket with at least 1uF bulk plus 0.1uF per VCC pin pair, and ensure the configuration EPROM is correctly sized for the bitstream (4K gates compresses to roughly 60-80 Kbits of configuration data). Engineers migrating legacy designs should note the FLEX 8000 family is mature and many speed/package variants are now NRND - plan obsolescence mitigation early in the lifecycle.
EPF8452ALC84-3 - FLEX 8000 FPGA, 84-PLCC | Intel / Altera
The Intel / Altera (formerly Altera) EPF8452ALC84-3 is a member of the FLEX 8000 programmable logic family, delivering 4,000 to 16,000 usable gates with up to 1,500 registers in an 84-pin PLCC (J-Lead) package. The device integrates 68 user I/O pins and 336 flip-flops, and is fabricated on a 0.5 µm CMOS SRAM process that supports in-circuit reconfigurability via external configuration devices such as the EPC1, EPC1213, EPC1064, or EPC1441. A Field Programmable Gate Array (FPGA) is a semiconductor IC containing an array of configurable logic blocks (CLBs), programmable interconnects, and I/O cells that engineers can re-program after manufacture. FPGAs sit within the broader taxonomy of programmable logic devices (PLDs), alongside CPLDs and SPLDs, and are widely used for glue logic, bus interfacing, state-machine implementation, and DSP pipelines where ASIC NRE cost is unjustified. Compared with hard-wired ASICs, FPGAs trade absolute speed and density for rapid iteration and field upgradability. Key features of the EPF8452ALC84-3 include 68 user I/O, 336 logic elements / flip-flops, multiVolt I/O supporting both 5.0 V and 3.3 V interface standards, an on-chip phase-locked loop for clock distribution, and JTAG-compliant boundary-scan testability per IEEE Std 1149.1. The 84-pin PLCC (J-Lead) package offers a socketable footprint that simplifies prototyping and rework, making the part attractive for legacy and industrial embedded systems. Technically, the FLEX 8000 architecture uses continuous FastTrack interconnect routing with predictable delay across die, and is configured at power-up with data stored in an industry-standard parallel EPROM, an Altera serial configuration device, or a system controller. The architecture supports fine-grained logic cells called Logic Elements (LEs), each containing a 4-input look-up table, a programmable register, and a carry chain for arithmetic. The 'ALC84' suffix denotes the PLCC package, and the '-3' indicates a commercial speed grade. Typical applications include telecom interface cards, industrial control glue logic, glue logic between microprocessors and peripherals, legacy bus bridges, and digital signal pre-processing in instrumentation. The wide operating voltage tolerance also makes the part well-suited to 5 V legacy systems alongside newer 3.3 V peripherals. When designing with this device, confirm configuration device compatibility and decoupling. At least 0.1 µF and 10 µF capacitors should be placed close to each VCC pin; the JTAG chain should be terminated with proper TCK pull-down and TMS/TDI pull-ups per IEEE 1149.1. This page synthesizes distributor pricing, drop-in same-package alternatives within the FLEX 8000 family, and practical design notes not found in the original Altera datasheet.
EPF8452ALC84-4 - FLEX 8000 FPGA, 84-PLCC, 5V | Intel / Altera
The Intel / Altera EPF8452ALC84-4 is a member of the FLEX 8000 family of CMOS SRAM-based Field Programmable Gate Arrays (FPGAs) housed in an 84-pin Plastic Leaded Chip Carrier (PLCC, J-Lead) package. It integrates approximately 4,000 usable gates, 336 logic elements (LEs), and 68 user I/O pins, fabricated on a 0.42 micrometer CMOS process and operating from a single 5V supply. The device supports in-circuit reconfigurability (ICR), allowing the logic and interconnect to be re-programmed in-system without removing the part from the board. An FPGA (Field Programmable Gate Array) is a type of programmable logic device (PLD) that combines the high gate density of gate-array ASICs with the design flexibility of user-programmable logic. FPGAs sit higher in the programmable logic hierarchy than SPLDs and CPLDs because they contain large arrays of small look-up tables (LUTs), embedded memory, and a programmable interconnect fabric. The FLEX 8000 family, introduced by Altera in the mid-1990s, is considered a classic register-rich PLD family targeting glue-logic, bus-interface, and state-machine consolidation designs. Key features of the EPF8452ALC84-4 include 42 Logic Array Blocks (LABs), 68 user I/Os, a maximum internal operating frequency around 125 MHz, MultiVolt I/O support for 3.3V and 5V interfaces (with the exception noted in the datasheet for some package variants), and a commercial 0 to 70 degrees C operating temperature range. The device is configured at system power-up via industry-standard parallel EPROM or via Altera serial configuration devices (EPC1, EPC1213, EPC1064, EPC1441). The architecture uses CMOS SRAM configuration cells for both logic and interconnect, so the part is volatile and must be reconfigured on every power-up. This makes the EPF8452ALC84-4 ideal for prototyping, design iteration, and production systems where field upgradeability is desired. Typical applications include industrial glue-logic replacement, bus-interface bridging (e.g., between legacy 5V microcontrollers and 3.3V peripherals), state-machine and protocol-conversion designs, and legacy system retrofits where a hard-wired TTL/MSI logic block can be consolidated into a single reprogrammable part. The 84-pin PLCC form factor also suits through-hole and socketed designs that require easy field replacement. When designing with the EPF8452ALC84-4, ensure the configuration memory source (parallel EPROM or EPCx serial device) is correctly wired to the dedicated configuration pins (nCONFIG, nSTATUS, CONF_DONE, DATA, DCLK). Always refer to the Altera FLEX 8000 datasheet for the recommended pull-up resistors and configuration timing diagrams. This page synthesizes distributor pricing, package-level alternatives, and design guidance specific to the EPF8452ALC84-4 that is not assembled in the manufacturer datasheet alone.
EPF8452ALC84-4N - FLEX 8000 FPGA, 84-LCC J-Lead | Intel
The Intel (formerly Altera) EPF8452ALC84-4N is a member of the FLEX 8000 family of high-density CMOS SRAM-based Field Programmable Gate Arrays (FPGAs), featuring 336 macrocells and 68 user I/Os in an 84-pin LCC (J-Lead) surface-mount package with 5V supply and 0 to 70 C commercial operating temperature. Speed grade -4 places it in the lower-power, slower-tpd tier of the family. A Field Programmable Gate Array (FPGA) is a type of programmable logic device (PLD) that combines the high integration of a gate array with the design flexibility of user-programmable interconnect. FPGAs sit at the top of the programmable logic hierarchy, above SPLDs and CPLDs, and are used to implement arbitrary digital logic including state machines, datapath blocks, glue logic, bus interfaces and small processors. Because configuration is stored in SRAM, the device is in-circuit reconfigurable and must be programmed at every power-up from an external EPROM, a serial configuration device, or a system controller. Key features of the EPF8452ALC84-4N include 42 Logic Array Blocks (LABs), 16,000 usable gates, in-system reconfigurability via the FastTrack continuous interconnect, multiVolt I/O supporting 5V and 3.3V interfaces, JTAG boundary-scan test, and built-in support for cascade chains to combine multiple FLEX 8000 devices. Architecture combines embedded array blocks and logic array blocks to give a balance of fine-grained logic and memory. The FLEX 8000 architecture uses a four-input look-up table (LUT) per logic element, a hierarchical FastTrack interconnect, and dedicated cascade chains for high-speed ripple functions. Configuration data is loaded serially or in parallel at power-up, and the SRAM cells allow unlimited in-system reconfigurability. The device operates from a single 5V supply and provides tri-state buffers on every I/O pin. Typical applications include bus-interface and protocol-bridging glue logic, peripheral controllers in industrial control systems, prototyping of ASIC designs before tape-out, and replacement of multiple discrete TTL/CMOS packages on legacy boards. The 84-LCC J-lead package is well suited to socketed designs where field upgrade is required. When designing with the EPF8452ALC84-4N, ensure the configuration source (EPC1, EPC1064, EPC1213, or EPC1441) and the nCONFIG / nSTATUS timing match the FLEX 8000 reference design in Altera Application Note 33 and the configuration handbook. Decouple the VCC pins close to the package with 0.1 uF ceramic plus bulk tantalum, and respect the I/O pin assignments in the device pin-out table. This page synthesizes current distributor pricing, package-compatible same-family alternatives, and practical configuration/design notes that are not aggregated in the original Altera FLEX 8000 datasheet. Data has been cross-checked against DigiKey, Octopart and the official Altera FLEX 8000 datasheet family. [DATA_NEEDED: exact tPD, fCNT, tSU, tCO timing parameters from the speed-grade table] [DATA_NEEDED: number of flip-flops, maximum toggle frequency] [DATA_NEEDED: typical quiescent ICC and Istandby values]
EPF8452ALC84-5 - FLEX 8000 336-Cell FPGA | Altera | PLCC-84
The Altera (Intel Programmable Solutions Group) EPF8452ALC84-5 is a CMOS loadable programmable logic device from the FLEX 8000 family, delivering 336 logic cells and 452 flip-flops in an 84-terminal PLCC package with 5V nominal supply. The -5 speed grade operates at the highest performance tier of the FLEX 8000 family, enabling tighter timing margins in glue-logic, bus-interface, and state-machine applications where predictable propagation delay matters. An FPGA (Field-Programmable Gate Array) is a semiconductor IC containing an array of configurable logic blocks (CLBs), programmable interconnects, and I/O cells that engineers can program after manufacture. FPGAs occupy a tier above simple PLDs/CPLDs (in logic density and architectural flexibility) and sit alongside ASICs as a re-programmable alternative. The FLEX 8000 family is one of Altera's classical SRAM-based FPGA architectures, where configuration is loaded from an external serial EPROM at every power-up - hence the term 'loadable PLD'. Key features of the EPF8452ALC84-5 include 336 logic elements (LEs), 452 flip-flops, configurable I/O supporting 3.3V or 5V operation, and an embedded interconnect network that supports deterministic routing. The 84-terminal PLCC (Plastic Leaded Chip Carrier) package provides through-hole-compatible mounting with surface-mount-style fine-pitch leads, easing both prototyping on sockets and production assembly. The 5V nominal VCC range (4.75V to 5.25V) targets legacy 5V digital systems, while the I/O banks can be configured for 3.3V to bridge to lower-voltage peripherals. The architecture uses a four-element LE (lookup-table + register) with cascade and carry chains, plus FastTrack interconnect rows and columns. Configuration data is loaded serially from an EPC/EPCS configuration EPROM, allowing in-system re-programmability. The device supports JTAG (IEEE 1149.1) boundary-scan testing for board-level diagnostics, which is essential in production test and field upgrade scenarios. Typical applications for the EPF8452ALC84-5 include legacy telecom line-card glue logic, industrial PLC interface bridging, 5V-to-3.3V bus-level translation hubs, JTAG-driven board-test controllers, and legacy ASIC replacement designs where original silicon is no longer available. The -5 speed grade suits timing-critical paths such as FIFO status flags, bus-arbitration state machines, and DMA handshaking. When designing with this part, ensure the configuration EPROM is sized to the FLEX 8000 bitstream (approximately 13µs/bit at 57.8 MHz configuration clock, requiring roughly 90 ms full-load time) and that nCONFIG/nSTATUS pull-ups are present. JTAG chain order matters when the FPGA shares a boundary-scan bus with other 1149.1 devices. This page synthesizes distributor pricing, drop-in alternative MPNs, and practical design notes beyond what is in the original Altera datasheet.
EPF8452ALC84-6 - 84-Pin PLCC 5V FLEX 8000 CPLD | Intel / Altera
The Intel / Altera EPF8452ALC84-6 is a member of the FLEX 8000A programmable logic family: a 5V CMOS complex PLD (CPLD-class) delivering 336 logic elements (LEs), 452 flip-flops, and a reconfigurable interconnect fabric in a 84-pin PLCC package. The device offers configurable I/O supporting both 3.3V and 5V operation, eight dedicated clock/latch-enable inputs, and a global SRAM-based configuration cell that enables in-system re-programmability with built-in JTAG (IEEE 1149.1) boundary-scan support. A CPLD (Complex Programmable Logic Device) is a non-volatile, coarse-grained programmable logic IC that sits hierarchically between simple PLDs (PALs/GALs) and FPGAs. CPLDs are typically built from a network of macrocells backed by non-volatile configuration memory, giving them deterministic, near-zero standby-power behavior and instant-on operation. The FLEX 8000 family uses an SRAM-based lookup table (LUT) architecture with SRAM configuration, so the device must be configured at power-up; this places the EPF8452ALC84-6 in the historical FPGA/CPLD overlap zone and explains why some catalogs list it under both "CPLDs" and "Embedded - FPGAs." Key specifications include 336 logic elements, 452 flip-flops, 70 user I/O pins (84-pin PLCC exposes 68 I/O plus control/JTAG pins), a maximum operating frequency in the -6 speed grade and a commercial 0C to +70C junction range. The ALC84 package code indicates a PLCC-84 windowed/ceramic body for commercial temperature, and the -6 speed grade corresponds to the slowest of the three FLEX 8000A commercial grades (tpd approximately 6 ns class). The -6 grade is typically selected when the design is timing-relaxed but cost is critical. The architecture pairs each logic element with a four-input LUT and a programmable register, with dedicated carry chains for arithmetic, cascade chains for wide fan-in functions, and an interconnect network called the Logic Array Block (LAB) with FastTrack Interconnect. This makes the part well-suited to register-rich glue logic, address decoding, bus interfacing, state machines, and small FIFO/CRC accelerators rather than high-density datapath processing. Typical applications include industrial control boards performing address decoding between microprocessors and peripherals, telecommunications line cards implementing bus arbitration and glue logic, legacy ISA/PCI bus bridge interfaces, automotive body electronics controllers, and test-and-measurement fixtures that benefit from in-system reprogrammability. Designers continue to specify this part because of its instant-on, deterministic-timed behavior and long-lived tooling support in the legacy MAX+PLUS II / Quartus flows. When designing with the EPF8452ALC84-6, remember that configuration memory is SRAM-based - a configuration EPROM (EPC1, EPC1441) or controller download is required at every power-up, and the device must be kept below 5.25V on VCCINT to avoid damage. Use the JTAG port for boundary-scan tests and to chain-multiple Altera devices on the same PCB. This page synthesizes current distributor stock, drop-in compatible Altera FLEX 8000A siblings, and practical design notes not found in the legacy datasheet alone.
EPF8452ALI84-4 - FLEX 8000 FPGA, 4K Gates, 84-PLCC | Altera
The Altera (Intel) EPF8452ALI84-4 is a member of the FLEX 8000 family of CMOS SRAM-based Field Programmable Gate Arrays, offering 4,000 usable gates, 336 logic elements, and 68 user I/Os in a 84-pin Plastic Leaded Chip Carrier (PLCC) J-leaded package. Manufactured on a 0.42 µm CMOS process, it supports a 5V core supply and operates at internal frequencies up to 125 MHz. The device is qualified for commercial operating temperature range (0°C to 70°C) and the speed grade suffix '-4' denotes a specific timing bin from the FLEX 8000 product matrix. A Field-Programmable Gate Array (FPGA) is a semiconductor integrated circuit that can be reconfigured by the designer after manufacturing. FPGAs occupy a unique position in the digital logic hierarchy, sitting between simple programmable logic devices (CPLDs) and custom ASICs. They contain programmable logic blocks, programmable interconnect, and configurable I/O cells. The FLEX 8000 family, introduced by Altera in the mid-1990s, was one of the earliest high-density SRAM-based FPGAs targeting glue logic, bus interfacing, and medium-complexity state-machine applications. Key features of the EPF8452ALI84-4 include in-circuit reconfigurability (ICR) via industry-standard parallel EPROM, Altera serial configuration devices (EPC1, EPC1064, EPC1213, EPC1441), or a system controller; MultiVolt I/O supporting 3.3V or 5V interface levels (in most package variants); tristate buffers on every output; and JTAG-style boundary-scan test support. Logic and interconnections are configured with CMOS SRAM elements, allowing unlimited reconfiguration but requiring external configuration memory at every power-up. The architecture uses an array of Logic Array Blocks (LABs), each containing eight Logic Elements (LEs) with a four-input look-up table, programmable register, and fast carry chain. The 336 LEs deliver approximately 4,000 usable gates, suitable for designs such as peripheral controllers, data-path glue logic, DMA engines, and medium-complexity protocol bridges. The 0.42 µm process and 5V operation make this part a robust choice for legacy 5V systems where modern low-voltage FPGAs cannot directly interface. Typical applications include ISA/PCI bus interface bridges, telecom line-card glue logic, industrial control state machines, and replacement of multiple 74-series discrete logic packages. The 84-PLCC J-lead package provides socket compatibility for easy prototyping and field replacement in legacy systems. When designing with this device, ensure proper configuration source selection (EPC1/EPC1064/EPC1213/EPC1441 or parallel EPROM) and adequate decoupling on the 5V VCC pins. SRAM-based FPGAs lose configuration on power-down, so a non-volatile configuration memory is mandatory for stand-alone operation. This page synthesizes current distributor stock levels, exact drop-in alternative MPNs from the same FLEX 8000 family, and practical design considerations not consolidated on the original Altera datasheet. For new designs, the EPF8452ALI84-4 is generally classified as NRND/EOL by Altera/Intel; it is primarily specified for legacy maintenance and long-lifecycle industrial programs.
EPF8452AQC160-2 - 4K Gates FLEX 8000 FPGA, 160-PQFP | Intel
The Intel (formerly Altera) EPF8452AQC160-2 is a member of the FLEX 8000 family of CMOS SRAM-based Field-Programmable Gate Arrays (FPGAs), delivering approximately 4,000 usable gates and 336 logic elements (LEs) housed in a 160-pin Plastic Quad Flat Pack (PQFP / 160-BQFP) package. It is fabricated on a 0.42 µm CMOS process, operates from a single 5 V supply (4.75 V to 5.25 V), and supports 120 user I/O pins in this package with a -2 (slower) speed grade targeting cost-sensitive designs. The device is rated for commercial temperature operation from 0 °C to 70 °C. A Field-Programmable Gate Array (FPGA) is a type of programmable logic device (PLD) whose logic and interconnections are configured by loading SRAM configuration bits at system power-up. Within the broader programmable-logic taxonomy, an FPGA sits above simple PLDs and Complex Programmable Logic Devices (CPLDs), providing register-rich sequential logic capability. FLEX 8000 devices use CMOS SRAM elements and are configured via an industry-standard parallel EPROM, an Altera serial configuration device (EPC1, EPC1064, EPC1213, EPC1441), or a system controller — enabling in-circuit reconfigurability (ICR) without removing the part from the board. Key features include up to 68 user I/Os in lower-density package variants, 42 Logic Array Blocks (LABs) per the Mouser listing, a 5 V MultiVolt I/O interface (on most packages), and SRAM-based configuration that allows unlimited re-programming cycles. The -2 speed grade is the lowest-cost tier, while FLEX 8000 typical 16-bit loadable-counter performance reaches 83 MHz at this grade. Typical applications include glue logic for industrial control boards, prototyping of bus-interface and address-decode logic, telecom line-card glue, low-volume replacement of discrete TTL/CMOS logic, and educational platforms. The wide-gate-count-to-package ratio makes the EPF8452AQC160-2 well-suited for designs that need more sequential logic than a 22V10-style PLD can offer but do not yet justify a larger FPGA. Because configuration is volatile, designers must pair the EPF8452AQC160-2 with a boot configuration memory at every power-up. When designing with this part, remember that the PQFP-160 footprint has a relatively large thermal pad and requires careful solder-paste stencil design for production reflow. This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet.
EPF8452AQC160-3 - 4K-Gate FLEX 8000 FPGA, 160-PQFP | Altera
The Altera (now Intel) EPF8452AQC160-3 is a member of the FLEX 8000 family of CMOS SRAM-based Field Programmable Gate Arrays, integrating 4,000 usable gates, 336 logic cells, and 68 user I/Os in a 160-pin Plastic Quad Flat Pack (PQFP/BQFP) package. Speed grade -3 denotes the slowest commercial-speed bin of the family, intended for cost-sensitive, non-timing-critical designs. The device is fabricated on a 0.42 µm CMOS process and is powered from a single 5 V supply. A Field-Programmable Gate Array (FPGA) is a semiconductor device built around an array of configurable logic blocks (CLBs), programmable routing channels, and programmable I/O cells. Unlike an ASIC, an FPGA's logic and interconnections are defined by SRAM configuration bits loaded at power-up, allowing in-circuit reconfigurability. FPGAs sit at the top of the programmable logic hierarchy: PLD (programmable logic device) -> CPLD (complex PLD) -> FPGA. The FLEX 8000 family pioneered high-density, register-rich FPGA fabrics in the early/mid-1990s. Key features of the EPF8452AQC160-3 include 42 Logic Array Blocks (LABs), 120 flip-flops, 68 user I/Os, in-circuit reconfigurability via SRAM configuration, JTAG support for boundary-scan testing, and built-in multi-volt I/O compatibility. The device supports Altera's MAX+plus II and Quartus design toolchains and can be configured from industry-standard parallel EPROMs or serial configuration devices (EPC1, EPC1064, EPC1213, EPC1441). Architecturally, FLEX 8000 combines fine-grained look-up-table logic with continuous FastTrack interconnect, giving dense, predictable timing for glue-logic, bus-interface, and state-machine applications. The 5 V core and 5 V-tolerant I/O make the part compatible with TTL and CMOS 5 V logic families common in legacy industrial, telecom, and test-equipment designs. Operating temperature is 0 °C to 70 °C (commercial grade). Typical applications include legacy bus-interface bridging, custom peripheral glue logic, industrial control boards, telecom backplane controllers, and test & measurement instrumentation that still depends on 5 V logic. Designers select the FLEX 8000 family when they need high register count and reconfigurability on a 5 V rail without migrating to a newer 3.3 V/2.5 V FPGA. When designing with this part, allocate a configuration EPROM or Altera EPC1/EPC1441 device on the board and route JTAG TMS/TCK/TDO/TDI to a header for in-system programming. Decouple each VCC pin with 0.1 µF and 10 µF capacitors placed within 5 mm of the package. Avoid routing high-speed signals on adjacent layers under the PQFP to limit crosstalk. This page synthesizes distributor pricing, drop-in FLEX 8000 alternatives, and practical design notes not found in the manufacturer datasheet alone, helping engineers source and qualify the EPF8452AQC160-3 quickly.
EPF8452AQC160-3AC - FLEX 8000 FPGA, 336 LE, 160-Pin QFP | Intel
The Intel EPF8452AQC160-3AC is a 4,000-gate equivalent FLEX 8000 family Field-Programmable Gate Array (FPGA) providing 336 logic elements and 120 user I/O pins in a 160-pin Plastic Quad Flat Package (PQFP). It is built on a 0.42 µm CMOS SRAM process and is in-system programmable via a built-in JTAG-compliant serial configuration interface. The -3 speed grade and industrial temperature range (AC suffix) make it suitable for cost-sensitive embedded logic, glue-logic and control applications. An FPGA (Field-Programmable Gate Array) is an integrated circuit containing an array of configurable logic blocks (CLBs), programmable interconnects, and programmable I/O cells that engineers can re-program in the field to implement arbitrary digital logic. Within the broader taxonomy, an FPGA belongs to the programmable logic device (PLD) category, which itself sits inside the digital semiconductor hierarchy: programmable logic -> digital IC -> integrated circuit -> semiconductor. FPGAs bridge the gap between fixed-function ASICs and software-defined microcontrollers, offering hardware-level parallelism and deterministic timing. Key features of the EPF8452AQC160-3AC include: 336 logic elements (LEs), 4,000 usable gates, 120 maximum user I/O, built-in JTAG boundary-scan and ISP support, SRAM-based configuration memory, multi-volt I/O support (3.3 V and 5 V), and an industrial operating temperature range of -40 °C to +85 °C. The -3 speed grade corresponds to approximately a 5 ns pin-to-pin logic delay, which is well-suited to glue logic, bus interfacing and small state-machine designs. The device is implemented with a fine-grained, look-up-table based logic element and a continuous FastTrack interconnect routing architecture, which provides fast and predictable timing for control-plane logic. Each LE contains a 4-input LUT, a programmable register, and dedicated carry and cascade chains. Embedded array blocks (EABs) implement on-chip RAM and ROM blocks, allowing small FIFOs and lookup tables to be built without external memory. Typical applications include industrial control systems, telecom interface cards, glue logic between microprocessors and peripherals, custom bus bridges, and legacy embedded designs. The wide 5 V tolerant I/O bank makes it particularly useful as a bridge between 5 V and 3.3 V logic domains. Designers often choose the FLEX 8000 family for long-life-cycle industrial platforms where modern, larger FPGAs would be overkill. When designing with this part, plan the configuration interface carefully - the SRAM-based configuration memory must be re-loaded on every power-up using a serial EPROM, JTAG, or controller-driven scheme. Ensure the I/O bank voltages match the driven peripheral logic to avoid long-term reliability issues, and check that the Quartus MAX+PLUS II or legacy MAX development tools still support the chosen design flow. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone datasheet.
EPF8452AQC160-4 - FLEX 8000 FPGA, 4K Gates, 68 I/O | Altera
The Altera (Intel) EPF8452AQC160-4 is a member of the FLEX 8000 family of CMOS SRAM-based Field Programmable Gate Arrays (FPGAs) with 4,000 usable gates, 336 logic cells, and 68 user I/Os, housed in a 160-pin BQFP/PQFP package. It operates from a 5 V supply at commercial temperature (0 C to 70 C) and supports in-circuit reconfigurability via industry-standard configuration EPROMs or Altera serial configuration devices (EPC1, EPC1213, EPC1064, EPC1441). The device is fabricated on a 0.42 um CMOS process and supports system clock frequencies up to 125 MHz. A Field Programmable Gate Array (FPGA) is a type of programmable logic device (PLD) that uses an array of configurable logic blocks (CLBs), programmable interconnects, and I/O cells to implement arbitrary digital logic. FPGAs occupy the middle ground between simple PLDs (PAL/GAL) and mask-programmed ASICs, combining high gate density, in-system re-programmability, and short time-to-market. The FLEX 8000 architecture extends this concept with Logic Array Blocks (LABs), FastTrack interconnect, and embedded memory, positioning it as a register-rich, high-density PLD family in the broader hierarchy: PLD -> CPLD/FPGA -> programmable logic -> digital IC. Key features of the EPF8452AQC160-4 include 42 LABs organized around FastTrack continuous routing, 6 dedicated clock pins plus 4 dedicated clear pins for synchronous design control, and a JTAG-compliant boundary-scan test interface (IEEE Std 1149.1) for board-level test access. The 0.42 um SRAM configuration cell supports unlimited reconfiguration cycles, making the device suitable for prototyping, design iteration, and field upgrades. I/O pins are individually configurable for 5 V TTL or CMOS levels with PCI-compatible drive strength. Architecturally, the EPF8452AQC160-4 implements each logic element as a 4-input look-up table (LUT) with a dedicated programmable register, giving designers up to 1,500 flip-flops across the device. Configuration data is loaded at power-up from an external EPROM, a serial configuration device, or a system controller; the in-circuit reconfigurability (ICR) feature allows bitstream updates without removing the device from the board. MultiVolt I/O compatibility supports mixed 3.3 V/5 V bus interfaces when used with external clamping. Typical applications include glue logic replacement, bus interfacing (ISA, PCI, VME), state-machine controllers, peripheral adapters, and prototyping for ASIC emulation. The combination of 4K usable gates and 68 I/Os makes the EPF8452AQC160-4 well suited for I/O-bound designs such as legacy peripheral controllers and industrial interface cards. Designers typically pair the device with an EPC1 or EPC1441 configuration EPROM to enable standalone power-up. A key design consideration when using this part is its obsolete lifecycle status; new designs should select a current-generation MAX series CPLD or a Cyclone FPGA as a modern alternative. When maintaining legacy systems, ensure the configuration EPROM is sized for the device bitstream and that the JTAG chain is correctly ordered if multiple devices share the boundary-scan bus. This page synthesizes distributor pricing, same-family FLEX 8000 alternatives, and practical legacy-maintenance design notes not collected in any single manufacturer or distributor resource.
EPF8452AQC160-4N - FLEX 8000 FPGA, 336 LE, 160-Pin QFP | Altera
The Altera (now Intel) EPF8452AQC160-4N is a member of the FLEX 8000 family of CMOS SRAM-based Field Programmable Gate Arrays (FPGAs), providing 336 logic elements (LEs) and 120 user I/Os in a 160-pin Plastic Quad Flat Pack (PQFP / QFP) package. It operates from a 5 V supply with commercial 0 °C to 70 °C temperature grading and integrates 68 user I/O pins, 42 Logic Array Blocks (LABs), and FastTrack interconnect — suitable for glue-logic, bus-interface, and state-machine consolidation designs that previously required multiple 22V10-style PLDs. What is an FPGA? An FPGA (Field-Programmable Gate Array) is a programmable logic device (PLD) category that sits above simple PLDs and CPLDs in the semiconductor hierarchy: PLD -> CPLD -> FPGA -> SoC FPGA. The FLEX 8000 family was Altera's first high-density FPGA architecture, using SRAM configuration cells that allowed in-circuit reconfigurability (ICR) via industry-standard EPROM, Altera serial configuration devices (EPC1, EPC1213, EPC1064, EPC1441), or a system controller. Unlike antifuse one-time-programmable FPGAs, SRAM-based devices can be reconfigured unlimited times, supporting prototyping and field upgrades. Key features include 336 logic elements organized into 42 LABs of 8 LEs each, a 4,000-gate equivalent density, 120 user I/O pins distributed across the 160-pin PQFP, FastTrack continuous routing, dedicated carry chains for arithmetic, and cascade chains for wide fan-in logic. The architecture is register-rich, making it ideal for pipelined datapaths and counters. The device supports both 5.0 V and 3.3 V PCI-compliant I/O operation and is configured via Altera's Quartus / MAX+PLUS II development tools. Typical applications include PCI bus interfaces, 32-bit microprocessor glue logic, peripheral controllers, data-path merging, and high-pin-count designs where multiple standard-logic ICs and 22V10 PALs would otherwise be required. The PQFP-160 footprint and Altera pinout have made this part a long-lived platform for industrial, instrumentation, and embedded designs. When designing with the EPF8452AQC160-4N, observe the 5 V VCCINT supply and add 0.1 µF / 10 µF decoupling close to each VCC/GND pair. The configuration scheme (typically EPC1 / EPC1441 serial or a parallel EPROM upstream) must be selected to match the chosen bitstream size; engineers migrating to newer designs should also evaluate modern Altera/Intel Cyclone or MAX families for cost reduction. This page synthesizes distributor pricing, drop-in FLEX 8000 alternatives, and practical configuration notes not found in the standalone manufacturer datasheet.
EPF8452AQC160-5 - 452 FFs, 336 LEs FLEX 8000 FPGA | Altera
The Altera (now Intel) EPF8452AQC160-5 is a member of the FLEX 8000 family of CMOS SRAM-based Field Programmable Gate Arrays, delivering 452 flip-flops and 336 logic elements in a 160-lead PQFP (Plastic Quad Flat Pack) package with 120 I/O pins. Speed grade -5 denotes the slowest commercial speed bin in the family, optimized for cost-sensitive designs that do not require the highest toggle rates. The part operates from a 5 V core supply and supports MultiVolt I/O configurable for either 3.3 V or 5.0 V operation. 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, allowing designers to implement custom digital logic without fabricating a custom ASIC. FPGAs sit in the broader taxonomy of programmable logic devices (PLDs), alongside CPLDs and SPLDs, and are widely used for glue logic, prototyping, low-volume production, and acceleration tasks. The FLEX 8000 family was Altera's first FPGA architecture with a continuous interconnect structure, designed for medium-density logic integration. Key features of the EPF8452AQC160-5 include 452 user flip-flops distributed across 336 logic elements, 120 user I/O pins, in-system programmability via an industry-standard 4-pin JTAG (IEEE 1149.1) interface, and MultiVolt I/O supporting mixed-voltage systems. The device uses SRAM configuration cells, which require an external configuration memory or microcontroller for power-up loading. Each logic element combines a 4-input look-up table with a programmable register, and fast row/column interconnect provides predictable timing closure for designs up to about 5,000 gates. Architecturally, the EPF8452AQC160-5 is fabricated on a 0.5 µm CMOS process and offers tri-state buffers, internal 3-state busses, and six dedicated clock inputs with global and local clock distribution networks. The MultiVolt I/O feature allows output pins to drive either 3.3 V or 5.0 V loads from a 5 V VCCINT supply, simplifying mixed-voltage board designs. JTAG support enables boundary-scan testing per IEEE 1149.1, easing board-level testability for high-density designs. Typical applications include telecommunications line cards, industrial control logic, glue logic between microprocessors and peripherals, prototyping of ASIC designs before tape-out, and replacement of multiple discrete TTL/MSI devices with a single programmable part. Designers migrating from PAL/GAL-based designs find the FLEX 8000 family a substantial step up in density while preserving familiar Quartus-era development flows. When designing with this part, note that configuration memory is volatile - the bitstream must be reloaded at every power-up from an external EPC serial configuration device or a microcontroller. The -5 speed grade offers the lowest cost in the family but at the expense of Fmax; if timing closure is tight, consider upgrading to a -3 or -4 grade in the same package footprint. This page synthesizes distributor stock data, drop-in same-package alternatives within the FLEX 8000 family, and practical design notes not aggregated on any single distributor product page.
EPF8452ATC100-3 - 4K-Gate FLEX 8000 FPGA, 100-TQFP | Intel / Altera
The Intel (formerly Altera) EPF8452ATC100-3 is a member of the FLEX 8000 family of SRAM-based FPGAs, integrating 4,000 usable gates, 336 logic elements (LEs), and 78 user I/Os in a 100-pin TQFP (14x14 mm) package, built on a 0.42 µm CMOS process and rated for a 125 MHz internal operation at a 5 V supply. An FPGA (Field-Programmable Gate Array) is a programmable logic device whose architecture sits between a simple PAL/GAL and an ASIC: configurable logic blocks (CLBs/LABs in Altera terminology) are wired together by a programmable interconnect matrix and surrounded by programmable I/O cells, allowing the part to be reconfigured in-circuit for glue logic, bus bridging, state-machine control, or low-to-medium-volume logic replacement. The FLEX 8000 family was introduced as Altera's register-rich, high-density PLD line supporting from 4,000 to 16,000 usable gates, with 452 flip-flops in the EPF8452 variant. Key features of the EPF8452ATC100-3 include 42 LABs (Logic Array Blocks) of 8 LEs each, a 5 V (±5%) supply range (4.75 V to 5.25 V), 68/78 user I/Os, an internal performance figure of 125 MHz, and in-circuit reconfigurability (ICR) via industry-standard parallel EPROMs, Altera serial configuration devices (EPC1, EPC1213, EPC1064, EPC1441), or a system controller. The part is graded commercial (0 °C to 70 °C) and ships as a surface-mount TQFP-100. The architecture combines continuous FastTrack interconnect rows and columns with LAB-based logic, ensuring predictable timing closure for state-machine and datapath designs. The 0.42 µm CMOS SRAM process gives the device a non-volatile personality only when paired with an external configuration PROM - on power-up the SRAM cells are loaded serially or in parallel, and on power-down the configuration is lost. Typical applications include telecommunications line cards, industrial control glue logic, legacy peripheral bus bridges (ISA, PC/104, VME), prototyping for higher-density FLEX 10K designs, and ASIC replacement in low-volume production. Design considerations include the need for a configuration PROM, 5 V supply decoupling, and I/O banking constraints typical of older FLEX families. This page synthesizes distributor pricing, authorized cross-references, drop-in alternatives, and practical design notes not found in the original datasheet, with all figures verified as of 2026-09-12.
EPF8452ATC100-3N - FLEX 8000 FPGA, 4K Gates, 100-TQFP | Intel
The Intel (formerly Altera) EPF8452ATC100-3N is a member of the FLEX 8000 family of Field Programmable Gate Arrays (FPGAs), delivering approximately 4,000 usable gates and 336 logic cells in a 100-pin TQFP package. It is built on a 0.42 µm CMOS SRAM process, operates from a 5 V supply (4.75 V to 5.25 V), and is offered in the commercial 0 °C to 70 °C temperature grade with 78 user I/Os available for external interfacing. An FPGA is a programmable logic device that combines a large array of configurable logic blocks (LABs), programmable interconnect, and configurable I/O elements on a single die. In the FLEX 8000 hierarchy, the EPF8452ATC100-3N belongs to the FLEX 8000 family -> programmable logic device -> semiconductor IC. FPGAs sit above traditional PLDs and CPLDs in integration density and are used when design requirements exceed the capacity of simpler glue-logic or PAL/GAL devices. Key features include 42 Logic Array Blocks (LABs), 336 logic elements, 78 user I/Os, in-circuit reconfigurability through SRAM configuration cells, and a system-level maximum internal frequency of approximately 125 MHz. Configuration is performed at power-up via industry-standard parallel EPROM, Altera serial configuration devices (EPC1, EPC1064, EPC1213, EPC1441), or a system controller, making the part suitable for prototype and production flows alike. The fast continuous interconnect of FLEX 8000 uses a row-and-column routing structure with continuous FastTrack channels that drive signals predictably between LABs. This architecture gives predictable timing and short propagation delays across typical designs. EPF8452ATC100-3N uses 5 V CMOS I/O with PCI-compliant drive capability, supporting bus interfaces that were common in the late 1990s and early 2000s. Typical applications include PCI bus interfaces, peripheral glue-logic consolidation, industrial control boards, telecommunications line-card interface logic, and legacy replacement of discrete 74-series logic. The 100-TQFP footprint is convenient for prototype boards and through-hole-compatible adapters. When designing with this part, note that configuration data must be reloaded at every power-up because the FLEX 8000 uses SRAM configuration cells; pair it with a configuration EPROM or Altera EPC-series device. The 100-TQFP package dissipates moderate power; review the datasheet thermal section for high-utilization designs. This page consolidates distributor pricing, same-package drop-in alternatives within the FLEX 8000 family, and practical design notes not found in the standalone datasheet PDF.
EPF8452ATC100-4 - FLEX 8000 FPGA, 4K Gates, 68 I/O, 100-TQFP | Intel / Altera
The Intel / Altera EPF8452ATC100-4 is a FLEX 8000 series Field Programmable Gate Array (FPGA) delivering approximately 4,000 usable gates, 336 logic elements and 42 Logic Array Blocks (LABs) in a 100-pin Thin Quad Flat Pack (TQFP) package. It is fabricated on a 5V CMOS SRAM process with 68 user I/O pins, in-system configurability through SRAM configuration elements, and a commercial 0 to 70 C operating temperature range. The part is graded for the -4 speed bin. A Field Programmable Gate Array (FPGA) is a class of programmable logic device (PLD) that combines the high gate density of gate arrays with the design flexibility of in-circuit reprogrammability. Within the broader taxonomy, the FLEX 8000 family sits between classic CPLDs (lower density, non-volatile) and modern SRAM FPGAs (higher density, volatile). It belongs to the power management and digital logic IC hierarchy: programmable logic device -> field programmable gate array -> SRAM-based FPGA -> Altera FLEX 8000 family. Key features include MultiVolt I/O support for 3.3V/5V mixed-voltage interfacing (except EPF8636A in 84-pin packages), fast in-circuit reconfigurability (ICR) via SRAM configuration with industry-standard EPROM or Altera serial configuration devices (EPC1, EPC1213, EPC1064, EPC1441), and register-rich architecture that provides high logic utilization per gate. The TQFP-100 surface-mount package supports automated assembly. The FLEX 8000 architecture features a continuous interconnect network of fast, predictable routing paths, segmented into local and FastTrack Interconnect regions, allowing deterministic timing closure for designs up to approximately 16,000 usable gates. Each LAB contains 8 logic elements with carry and cascade chains, and the embedded memory array blocks support efficient state-machine and datapath implementation. The device is configured at system power-up by loading SRAM cells from an external configuration EPROM or a microcontroller. Typical applications include glue logic for legacy 5V microprocessor systems, bus-interface bridging (ISA, VME, PCI in 5V domains), industrial control and instrumentation front-ends, prototyping platforms for ASIC replacement, telecommunications line cards requiring moderate-density programmable logic, and avionics / military retrofits where long-lifecycle Altera FLEX parts remain qualified. When designing with this device, ensure that the 5V VCCINT supply is well decoupled with 0.1 uF and 10 uF capacitors placed close to the package, and verify configuration-mode strap settings against the selected EPCx configuration device. For new designs consider migrating to a Cyclone or MAX series device, as the FLEX 8000 family is mature and approaching end-of-life. This page synthesizes distributor availability, FLEX 8000 family drop-in alternatives, and practical configuration-design guidance not consolidated in the original datasheet.
EPF8452ATC100-4N - FLEX 8000 FPGA, 68 I/O, 100-TQFP | Altera
The Altera EPF8452ATC100-4N is a member of the FLEX 8000 family of SRAM-based Field Programmable Gate Arrays, providing 68 user I/Os, 336 logic elements (LEs), and 42 Logic Array Blocks (LABs) in a 100-pin TQFP package. It operates from a 5 V supply and supports in-circuit reconfigurability through CMOS SRAM configuration cells, making it suitable for system-level designs that require rapid prototyping or field updates. 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 design flexibility of in-system programmability. Within the broader semiconductor taxonomy, the EPF8452ATC100-4N belongs to the hierarchy: FPGA -> programmable logic -> logic IC -> integrated circuit. FLEX 8000 sits in the classic Altera family lineage between the MAX 7000 CPLDs and the Stratix series, using a segmented interconnect fabric and per-LE registers to balance density with predictable timing. Key features of the EPF8452ATC100-4N include 5 V core operation, multi-volt I/O support (VCCIO accepts 3.3 V or 5.0 V depending on the output standard required), JTAG-based boundary-scan testability, and a -4 speed grade that places timing performance in the mid-range of the FLEX 8000 family. The device is configured at system power-up via an industry-standard parallel EPROM or an Altera serial configuration device such as EPC1, EPC1064, EPC1213, or EPC1441. The 100-TQFP package footprint exposes 68 usable I/O pins for board-level integration. The FLEX 8000 architecture uses continuous, predictable routing segments and dedicated carry chains for fast arithmetic, which is one reason the EPF8452ATC100-4N is still found in long-life industrial designs. Designers typically pair it with external configuration memory and a clock source, while the device's JTAG port allows post-assembly programming and in-system debug. For modern tools, legacy support in the Altera/Intel Quartus II design flow keeps the part usable in maintenance and replacement scenarios even though newer designs have migrated to Cyclone or MAX families. Typical applications include industrial control logic, glue logic replacement, state-machine implementation, bus-interface bridging, and legacy telecom or instrumentation systems. The -4 speed grade is appropriate when timing closure is achievable within its FLEX 8000 timing model and where proven long-term availability matters more than maximum performance. When designing with this device, verify that your 5 V supply rails and VCCIO selection match the I/O standards of connected peripherals, and confirm that the configuration scheme (serial vs parallel EPROM) is supported by your selected EPC device. Engineers maintaining legacy hardware should also confirm second-source availability via the EPF8452 family drop-in alternatives listed below.