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EPF8282ALC84-4N - FLEX 8000 FPGA 2.5K Gates 84-LCC | Intel / Altera
EPF8282ALC84-4N

EPF8282ALC84-4N - FLEX 8000 FPGA 2.5K Gates 84-LCC | Intel / Altera

The Intel / Altera EPF8282ALC84-4N is a member of the FLEX 8000 family of CMOS SRAM-based Field-Programmable Gate Arrays (FPGAs), housed in an 84-pin LCC (J-Lead) package. It provides 2,500 usable gates with 208 logic elements, 68 user I/Os, and a maximum toggle frequency of 125 MHz, making it suitable for glue-logic, bus-interface, and PCI-compliant peripheral designs in commercial-temperature applications. A Field-Programmable Gate Array (FPGA) is a type of integrated circuit that can be configured by the customer after manufacturing to implement arbitrary digital logic. In the broader taxonomy, the EPF8282ALC84-4N sits within programmable logic devices (PLDs) -> CPLD/FPGA hybrid (FLEX 8000 is architecturally an FPGA) -> SRAM-based FPGA -> general-purpose programmable logic -> semiconductor. The FLEX 8000 family was one of Altera's early high-density register-rich FPGA lines, fully compliant with the PCI Local Bus Specification for plug-and-play peripheral designs. Key features include 5.0V VCCIO operation with selectable 3.3V or 5.0V output levels, in-circuit reconfigurability (ICR) via serial configuration devices (EPC1, EPC1064, EPC1213, EPC1441), and built-in JTAG boundary-scan test (IEEE 1149.1). The 0.42 µm CMOS SRAM process provides high integration while the 84-pin LCC (J-Lead) package supports surface-mount assembly with excellent thermal and mechanical characteristics. Four dedicated inputs are reserved for high-fanout synchronous control signals. Architecturally, the device uses Look-Up Table (LUT)-based logic elements arranged in Logic Array Blocks (LABs) with FastTrack interconnect. Configuration data is loaded from an industry-standard parallel EPROM, an Altera serial configuration device, or a system controller at power-up. The FastTrack continuous routing architecture provides predictable timing with delays independent of logic placement, simplifying timing closure in legacy designs. Typical applications include PCI bus interface controllers, peripheral glue logic, register-rich state machines, bus bridges (ISA-to-PCI, microcontroller-to-PCI), and legacy industrial control systems. The high pin-count LCC package allows integration of multiple 32-bit buses into a single device, reducing board space and BOM cost compared to discrete TTL designs. When designing with this part, ensure the configuration scheme (serial vs parallel) and EPC device selection match the bitstream size. The PCI-compliant I/O drivers require careful signal-integrity layout to meet the 33 MHz PCI timing budget, including series-damping resistors and matched trace lengths on the bus. This page synthesizes distributor pricing, drop-in alternatives within the FLEX 8000 family, comparison tables, and practical design notes that go beyond the manufacturer datasheet's typical-application content, giving engineers a single reference for sourcing and designing with this mature legacy FPGA.

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EPF8282ALI84-4 - FLEX 8000 FPGA 2.5K Gates | Intel / Altera
EPF8282ALI84-4

EPF8282ALI84-4 - FLEX 8000 FPGA 2.5K Gates | Intel / Altera

The Intel (formerly Altera) EPF8282ALI84-4 is a member of the FLEX 8000 programmable logic family, integrating approximately 2,500 usable gates and 208 logic elements in a 0.42 µm CMOS SRAM-based architecture. It is supplied in an 84-pin PLCC package and operates from a 5 V supply with a -4 speed grade targeting industrial-grade timing closure. Internal logic capacity delivers up to 16,000 usable gates per family specification with register-rich interconnect for synchronous designs. A Field-Programmable Gate Array (FPGA) is a semiconductor device built around an array of configurable logic blocks (CLBs), programmable routing channels, and I/O cells, all controlled by user-loaded SRAM configuration bits. FPGAs sit between discrete logic ICs (74-series glue logic) and ASICs in the design hierarchy: like glue logic they are field-reprogrammable, but unlike ASICs they require no fab cycles, making them ideal for prototyping, low-volume production, and design iteration. The FLEX 8000 family represents one of the early Altera SRAM-based FPGA families, positioned as a register-rich CMOS PLD alternative to mask-programmed gate arrays. Key features of the EPF8282ALI84-4 include 2,500 typical gates (up to 16,000 usable gates per family), 208 logic cells/elements, in-circuit reconfigurability (ICR) via external configuration devices, 5 V core supply, 125 MHz internal performance, and JTAG-based boundary-scan test support. The 84-pin PLCC package provides through-hole compatibility for legacy and ruggedized designs. Architecturally, the FLEX 8000 device employs continuous FastTrack interconnect routing with predictable delay, embedded array blocks (EABs) for memory functions, and a SRAM configuration cell that supports infinite reconfiguration. The -4 speed grade places this part in the slower industrial-spec timing bin suitable for cost-sensitive applications. Typical applications include industrial control logic, glue-logic replacement on legacy 5 V buses, ASIC prototyping, and bridging interfaces between microprocessors and peripherals. The 5 V tolerance makes it a fit for legacy industrial PC/104, VME, and STD bus designs where 3.3 V FPGAs cannot be used. When designing with the EPF8282ALI84-4, ensure the configuration device (EPC2 or compatible) is correctly wired and that the 5 V supply rail stays within ±5 % tolerance during power-up to avoid partial configuration states. JTAG pins (TDI, TDO, TMS, TCK) must be pulled to known logic levels if unused. This page synthesizes distributor stock, lifecycle status, and drop-in alternative information for the EPF8282ALI84-4 that is not aggregated in the manufacturer datasheet alone.

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EPF8282ATC100-2 - FLEX 8000 FPGA, 2.5K Gates, 100-TQFP | Intel
EPF8282ATC100-2

EPF8282ATC100-2 - FLEX 8000 FPGA, 2.5K Gates, 100-TQFP | Intel

The Intel (Altera) EPF8282ATC100-2 is a member of the FLEX 8000 programmable logic family, delivering 2,500 usable gates, 208 logic cells, 26 LABs (Logic Array Blocks), and 78 user I/Os in a 100-pin TQFP package. Fabricated on a 0.42 µm CMOS process, the device operates from a 5 V supply and is rated for the commercial 0 °C to 70 °C temperature range. The "-2" speed grade targets moderate-performance glue-logic and control applications with predictable timing closure. A Field-Programmable Gate Array (FPGA) is a semiconductor integrated circuit that engineers can configure after manufacturing to implement arbitrary digital logic. The FLEX 8000 family sits in the hierarchy: FPGA → programmable logic device (PLD) → logic IC → integrated circuit → semiconductor. FPGAs differ from CPLDs in their distributed SRAM-based configuration memory, which provides higher logic density and register-rich architectures at the cost of requiring external configuration storage on power-up. Key features of the EPF8282ATC100-2 include in-circuit reconfigurability (ICR) via the serial configuration interface, JTAG boundary-scan test support, and a multi-volt I/O interface compatible with 5 V and 3.3 V signalling. The device integrates 282 flip-flops distributed across 26 LABs, supporting registered state machines, counters, and datapath logic. The MAX+PLUS II development system provides VHDL, Verilog HDL, and waveform design entry, synthesis, simulation, and timing analysis for the FLEX 8000 family. The FLEX 8000 architecture is built on a continuous, hierarchical routing fabric with FastTrack interconnect lines spanning the entire device. Each LAB contains 8 logic elements (LEs) with a 4-input look-up table (LUT), programmable register, and carry-chain for arithmetic operations. Dedicated input pins and clock networks support synchronous design patterns common in bus interfacing, peripheral control, and telecommunications glue logic. Typical applications include bus-interface bridging (PCI, ISA, VME), peripheral controllers, telecommunications line-card glue logic, industrial control state machines, and legacy system upgrades where ASIC-equivalent functionality is needed without the NRE cost. The 100-TQFP footprint makes the EPF8282ATC100-2 compatible with through-hole and surface-mount assembly lines that have been validated for the FLEX 8000 family. Designers should verify timing closure with MAX+PLUS II timing analysis and budget sufficient I/O headroom for 5 V tolerance on legacy buses. Because the FLEX 8000 family has been in production for decades, second-source supply remains available from authorized distributors and stocking partners. This page synthesizes distributor pricing, drop-in alternatives from the Site MPN list, and practical design considerations not consolidated on the manufacturer datasheet, helping engineers source pin-compatible replacements for legacy FLEX 8000 designs.

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EPF8282ATC100-2W - 2.5K Logic Elements FLEX 8000 FPGA | Altera
EPF8282ATC100-2W

EPF8282ATC100-2W - 2.5K Logic Elements FLEX 8000 FPGA | Altera

The Altera EPF8282ATC100-2W is a member of the FLEX 8000 family of SRAM-based Field Programmable Gate Arrays (FPGAs) housed in a 100-pin TQFP package. It integrates 2,500 typical gates, 282 logic elements, and 78 user I/O pins, with 208 bits of embedded RAM, providing a versatile platform for glue-logic, bus-interface, and state-machine prototyping on legacy 5V-tolerant systems. An FPGA (Field Programmable Gate Array) is a programmable logic device containing an array of configurable logic blocks (CLBs), programmable interconnect, and configurable I/O cells that the user programs after manufacture. FPGAs sit within the broader hierarchy: programmable logic device (PLD) -> logic IC -> integrated circuit -> semiconductor. Compared to older PLDs such as PALs and GALs, FPGAs offer far higher logic density, register-rich architectures, and SRAM or antifuse configuration memory. The FLEX 8000 family uses SRAM configuration, which means the device must be reloaded at every power-up from an external EPROM or an Altera EPC1/EPC1064/EPC1213/EPC1441 configuration device. Key features of the EPF8282ATC100-2W include 2,500 typical gates (5,000 maximum), 282 logic elements, 78 user I/Os, 208 flip-flops, 0.5 micron CMOS SRAM process, 5V tolerant I/O, JTAG boundary-scan support, and an industrial-grade speed grade of -2 (the "W" suffix denotes the wider industrial operating-temperature range). The device supports in-system programmability via the IEEE Std 1149.1 (JTAG) interface and can be cascaded with other FLEX 8000 devices for higher-density designs. The architecture uses four Logic Array Blocks (LABs) per row, with each LAB containing eight Logic Elements (LEs). Each LE consists of a 4-input look-up table, a programmable flip-flop, and dedicated carry and cascade paths. FastTrack Interconnect provides continuous routing rows and columns for predictable timing closure. Typical applications of the EPF8282ATC100-2W include legacy 5V peripheral glue logic, industrial-control state machines, bus-bridging between microprocessor and peripheral buses, prototyping for ASIC emulation, telecom backplane controllers, and military/aerospace systems that still require FLEX 8000 silicon. When designing with this device, ensure a configuration source (EPC1, EPC1064, or parallel EPROM) is present at every power-up, since SRAM cells lose their pattern when VCC drops below the data-retention threshold.

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EPF8282ATC100-3 - FLEX 8000 FPGA 2.5K Gates 78 I/O TQFP-100 | Intel
EPF8282ATC100-3

EPF8282ATC100-3 - FLEX 8000 FPGA 2.5K Gates 78 I/O TQFP-100 | Intel

The Intel / Altera EPF8282ATC100-3 is a member of the FLEX 8000 family of CMOS SRAM-based Field Programmable Gate Arrays (FPGAs), delivering 2,500 usable gates, 208 logic cells (LEs), and 78 user I/Os in a 100-pin Thin Quad Flat Pack (TQFP) package. It is built on a 0.42-micron CMOS SRAM process with 5V supply tolerance and operates up to 125 MHz system frequency, supporting -3 speed grade timing. The architecture integrates fast track interconnect, embedded array blocks (EABs), and logic array blocks (LABs) that combine register-rich logic with on-chip RAM. An FPGA (Field Programmable Gate Array) is a type of programmable logic device (PLD) that sits within the broader integrated circuit hierarchy of semiconductor devices. It uses look-up tables, flip-flops, and programmable interconnect to implement arbitrary digital logic, allowing engineers to reconfigure hardware functionality in-circuit via SRAM configuration memory. FPGAs bridge the gap between fixed-function ASICs and discrete logic, offering high integration, fast time-to-market, and in-system reconfigurability. Key features of the EPF8282ATC100-3 include 2,500 usable gates, 208 logic elements, 12,000 typical gates equivalent, 78 I/O pins, multiVolt I/O support for 3.3V/5V mixed-voltage interfacing, in-circuit reconfigurability (ICR), and JTAG boundary-scan test support. The device is configured at system power-up via industry-standard parallel EPROM, Altera serial configuration devices (EPC1, EPC1064, EPC1213, EPC1441), or a microprocessor. The FLEX 8000 architecture employs a segmented fast-track interconnect that links LABs horizontally and vertically with predictable delay, simplifying timing closure. Each EAB provides up to 2 Kbits of dual-port RAM or ROM, useful for FIFO buffers, lookup tables, and DSP datapaths. Designers can implement 32-bit buses and integrate glue logic around microprocessors without external bus drivers. Typical applications include telecommunications switching equipment, industrial control systems, test and measurement instrumentation, glue logic around microprocessors and microcontrollers, peripheral bus interfacing, and legacy embedded system retrofits. The wide I/O count and 5V tolerance make it useful for replacing discrete TTL/CMOS logic on 5V backplanes. When designing with this device, ensure configuration data is available at power-up using a compatible EPC series configuration device or microcontroller-driven configuration. Decoupling capacitors should be placed within 0.5 cm of each VCC pin, and unused I/O pins must be configured as outputs driving ground to minimize switching noise. This page synthesizes distributor pricing, drop-in alternatives, application notes, and design considerations for the EPF8282ATC100-3, supplementing the manufacturer datasheet with engineering guidance and cross-brand equivalents sourced from current distributor data.

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EPF8282ATC100-4 - 78 I/O FLEX 8000 FPGA, 100-TQFP | Intel
EPF8282ATC100-4

EPF8282ATC100-4 - 78 I/O FLEX 8000 FPGA, 100-TQFP | Intel

The Intel (Altera) EPF8282ATC100-4 is a Flex 8000-series Field-Programmable Gate Array (FPGA) with 208 logic cells, 78 user I/Os, and 2,500 usable gates, housed in a 100-pin TQFP (also called LFQFP) commercial-grade plastic surface-mount package. Built on a 5 V CMOS SRAM configuration architecture, the device loads its configuration from an industry-standard parallel EPROM, an Altera EPC1/EPC1064/EPC1213/EPC1441 serial configuration device, or a system controller at power-up. A Field-Programmable Gate Array (FPGA) is a type of programmable logic device (PLD) that combines the high gate density and register-rich architecture of gate arrays with the design flexibility of in-system reprogrammability. FPGAs sit above simple PLDs in the programmable logic hierarchy and below fixed-function ASICs, belonging to the broader family of logic ICs in the semiconductor category. Their role is to provide hardware-level parallel logic that can be reconfigured for glue logic, bus interfacing, state machines, and protocol bridging without fabricating a custom ASIC. Key features of the EPF8282ATC100-4 include 26 Logic Array Blocks (LABs), MultiVolt I/O support for 3.3 V or 5.0 V interface operation, in-circuit reconfigurability (ICR) for field updates without removing the part, and a typical propagation delay suitable for glue-logic and bridge applications up to 125 MHz. The architecture is register-rich, supporting up to 1,500 flip-flops for pipelined designs and synchronous state machines. The FLEX 8000 device architecture supports the MultiVolt I/O feature, which allows devices to interface with mixed-voltage systems. The SRAM-based configuration cells mean the design is volatile - it must be reloaded on every power-up - which is why the device pairs with a configuration EPROM. The 100-pin TQFP package provides 78 usable I/O pins, leaving 22 pins for power, ground, configuration, JTAG, and dedicated functions. Typical applications include industrial glue logic, legacy bus-interface bridges (ISA, PCI bridge buffers), protocol converters, telecommunications control logic, and embedded control systems requiring low-density reconfigurable logic. The 100-pin TQFP footprint is compatible with existing Altera FLEX 8000 design layouts, simplifying retrofit designs. When designing with this device, allocate adequate time for configuration loading from the EPROM at power-up. Decouple all VCC pins with 0.1 uF ceramic capacitors placed as close to the package as possible. The MultiVolt I/O pins must be configured for the correct interface voltage (3.3 V or 5.0 V) before connection to mixed-voltage buses. This page synthesizes distributor pricing, same-brand pin-compatible drop-in alternatives, and practical design notes that go beyond the manufacturer datasheet, with parametric comparison against the FLEX 8000 family siblings and form-fit-function (FFF) replacements.

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EPF8282ATC100-4N - FLEX 8000 FPGA 2.5K Gates 100-TQFP | Altera
EPF8282ATC100-4N

EPF8282ATC100-4N - FLEX 8000 FPGA 2.5K Gates 100-TQFP | Altera

The Altera (Intel) EPF8282ATC100-4N is a FLEX 8000 family Field Programmable Gate Array (FPGA) integrating 2,500 gates, 208 logic cells, and 78 user I/Os into a 100-pin TQFP surface-mount package, fabricated on a 0.42 µm CMOS process and rated for a 125 MHz internal performance. Operating from a 5 V supply, this device combines fine-grained logic capacity with high-pin-count packaging, making it a legacy workhorse for glue-logic, bus-interface, and state-machine replacement designs. An FPGA (Field Programmable Gate Array) is a type of programmable logic device (PLD) that integrates thousands of configurable logic blocks (CLBs), programmable interconnect, and I/O cells on a single semiconductor die. FPGAs occupy the middle ground between simple PLDs (PALs, GALs) and high-density CPLDs, offering higher logic density than SPLDs while remaining user-programmable in-circuit via SRAM or antifuse configuration memory. The FLEX 8000 family, in particular, pioneered the use of LUT-based logic elements with dedicated high-speed carry and cascade chains, enabling efficient arithmetic and datapath implementation. Key features of the EPF8282ATC100-4N include 78 I/Os, four dedicated fast-input pins for synchronous control signals (clock, clear, preset), and 26 Logic Array Blocks (LABs). Its 100-pin TQFP package supports high-pin-count bus integration, allowing multiple 32-bit buses to be consolidated into a single device. The bypassable flip-flop architecture enables purely combinatorial functions by routing LUT outputs directly to device pins, reducing latency for glue logic applications. Internally, the FLEX 8000 architecture provides two dedicated high-speed paths—carry chains and cascade chains—that accelerate arithmetic operations and wide fan-in functions. The 0.42 µm CMOS process delivers the speed and density balance required for mid-range programmable logic designs of its era, and the 5 V core and I/O supply simplifies integration into legacy 5 V digital systems. Typical applications include 32-bit bus integration in industrial control systems, peripheral interfacing in telecom and networking equipment, custom state machines in test and measurement instruments, and replacement of multiple discrete SSI/MSI logic ICs with a single programmable device. Designers typically choose the EPF8282ATC100-4N when migrating from discrete TTL or CMOS logic to a single reconfigurable solution. When designing with this device, note that the FLEX 8000 family requires external configuration memory (typically an EPC1 or EPC2 serial configuration device) and the Quartus or MAX+PLUS II development environment for HDL synthesis and programming file generation. The -4 speed grade denotes the slowest of the FLEX 8000 commercial speed grades, prioritizing cost over maximum operating frequency. This page synthesizes distributor pricing from DigiKey and Mouser, drop-in same-family alternatives within the FLEX 8000 portfolio, and practical design notes not consolidated in the legacy Altera datasheet, supporting both procurement decisions and engineering design reuse.

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EPF8282ATI100-3 - 2.5K Gates, 208 Cells, 125MHz FLEX 8000 FPGA | Altera
EPF8282ATI100-3

EPF8282ATI100-3 - 2.5K Gates, 208 Cells, 125MHz FLEX 8000 FPGA | Altera

The Altera EPF8282ATI100-3 is a FLEX 8000 family Field Programmable Gate Array (FPGA) with 2,500 usable gates, 208 logic cells, 26 Logic Array Blocks (LABs), and 78 user I/Os, housed in a 100-pin TQFP package. It is fabricated on a 0.42 µm CMOS process, supports a 5V supply, and operates at up to 125 MHz system clock frequency with the -3 speed grade indicating its mid-tier performance position within the family. A FPGA (Field Programmable Gate Array) is a type of integrated circuit whose logic and interconnections are configured by the end user via SRAM configuration memory, allowing in-circuit reconfigurability without mask changes. Within the broader programmable logic hierarchy, FPGAs sit above CPLDs (Complex Programmable Logic Devices) in logic density, and the FLEX 8000 family occupies Altera's classic high-density SRAM-based FPGA tier from the late 1990s, positioned as a high-volume alternative to gate-array ASICs. Key features include 78 user I/O pins supporting common single-ended standards of its era, 208 logic cells distributed across 26 LABs each containing 8 logic elements, 5V core and I/O supply, in-circuit reconfigurability via SRAM configuration bits, and compatibility with Altera EPC1, EPC1064, EPC1213, and EPC1441 serial configuration devices as well as industry-standard parallel EPROMs. The 100-pin TQFP package enables standard surface-mount PCB assembly on 0.5 mm pitch land patterns. The FLEX 8000 architecture uses CMOS SRAM configuration elements that load at system power-up from an external non-volatile memory. Its hierarchical routing includes FastTrack interconnect for predictable timing across die regions, and each Logic Element contains a 4-input look-up table, a programmable flipflop, and a dedicated carry chain for arithmetic. Typical applications include glue-logic consolidation in legacy industrial systems, protocol bridging interfaces, motor-control co-processors, and replacement of discrete TTL/CMOS logic on 5V backplanes. The 5V tolerant I/Os make it particularly suitable for retrofit designs originally built around 74-series logic. When designing with this device, ensure the configuration memory source (EPC1, EPC1064, parallel EPROM, or micro-controller) matches the chosen configuration scheme. The 100-pin TQFP requires 0.5 mm pitch PCB footprint and adequate ground-plane thermal management at sustained high toggle rates. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, including same-family variants and pin-compatible replacements useful for legacy system refresh.

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EPF8282ATI100-3N - 2.5K FLEX 8000 FPGA, 78 I/O, 100-TQFP | Altera
EPF8282ATI100-3N

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.

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EPF8282ATI100-3NGZ - FLEX 8000 FPGA 78 I/O 100-TQFP | Altera
EPF8282ATI100-3NGZ

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.

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EPF8282ATI100-3S - FLEX 8000 FPGA, 2.5K Gates, 100-TQFP | Intel / Altera
EPF8282ATI100-3S

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.

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EPF8282ATI100-4N - FLEX 8000 FPGA, 208 LE, 100-Pin TQFP | Intel / Altera
EPF8282ATI100-4N

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.

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EPF8282AVTC100-3 - FLEX 8000 FPGA 78 I/O 100-TQFP | Altera
EPF8282AVTC100-3

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.

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EPF8282AVTC100-4 - FLEX 8000 FPGA 2.5K Gates | Altera | 100-TQFP
EPF8282AVTC100-4

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.

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EPF8452AGC160-3 - FLEX 8000 FPGA, 5K Gates, 160-PQFP | Altera
EPF8452AGC160-3

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.

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EPF8452AGC160-3N - FLEX 8000 FPGA 4K Gates 125MHz 5V 160-CPGA | Altera
EPF8452AGC160-3N

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.

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EPF8452ALC84-3 - FLEX 8000 FPGA, 84-PLCC | Intel / Altera
EPF8452ALC84-3

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.

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EPF8452ALC84-4 - FLEX 8000 FPGA, 84-PLCC, 5V | Intel / Altera
EPF8452ALC84-4

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.

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EPF8452ALC84-4N - FLEX 8000 FPGA, 84-LCC J-Lead | Intel
EPF8452ALC84-4N

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]

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EPF8452ALC84-5 - FLEX 8000 336-Cell FPGA | Altera | PLCC-84
EPF8452ALC84-5

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.

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EPF8452ALC84-6 - 84-Pin PLCC 5V FLEX 8000 CPLD | Intel / Altera
EPF8452ALC84-6

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.

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EPF8452ALI84-4 - FLEX 8000 FPGA, 4K Gates, 84-PLCC | Altera
EPF8452ALI84-4

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.

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EPF8452AQC160-2 - 4K Gates FLEX 8000 FPGA, 160-PQFP | Intel
EPF8452AQC160-2

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.

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EPF8452AQC160-3 - 4K-Gate FLEX 8000 FPGA, 160-PQFP | Altera
EPF8452AQC160-3

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.

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