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EPF10K100GC503-3 - FLEX 10K 100K Gates FPGA 503-Pin CPGA | Intel (Altera)
EPF10K100GC503-3

EPF10K100GC503-3 - FLEX 10K 100K Gates FPGA 503-Pin CPGA | Intel (Altera)

The Intel (formerly Altera) EPF10K100GC503-3 is a member of the FLEX 10K programmable logic family, delivering 100,000 typical gate integration in a 503-pin Ceramic Pin Grid Array (CPGA) package. Built on a 0.42 um CMOS process with 3.3V core operation, the device combines an embedded array block for megafunctions with a general-purpose logic array, providing System-on-a-Programmable-Chip (SOPC) integration in a single device. What is a FLEX 10K FPGA? The FLEX 10K family is a PLD (Programmable Logic Device) family that pioneered embedded programmable logic - embedding dedicated array blocks alongside the generic logic fabric to implement efficient memory, arithmetic, and specialized logic functions without consuming logic elements. Positioned in the FPGA taxonomy, FLEX 10K sits between classic CPLDs (deterministic, glue-logic) and modern SRAM-based FPGAs (high-density, register-rich). Its hierarchy: FPGA -> programmable logic device -> digital logic IC -> semiconductor. Key features include 4,992 logic elements (cells), 4992 logic cells, 125 MHz internal operation, 0.42 um process technology, and 5V tolerant I/O. The device supports JTAG-based in-system programmability via the IEEE 1149.1 boundary-scan interface, allowing configuration via the passive serial, passive parallel synchronous, passive parallel asynchronous, and active serial modes. Embedded array blocks (EABs) provide dedicated memory blocks for FIFO, dual-port RAM, ROM, and CAM implementations. The FLEX 10K architecture embeds up to twelve EABs per row of logic array blocks, each EAB providing 2,048 bits of memory that can be configured as 256x8, 512x4, 1024x2, or 2048x1. Logic array blocks (LABs) each contain eight logic elements (LEs), and each LE contains a 4-input look-up table (LUT), a programmable register, and carry-chain logic for arithmetic operations. Typical applications include telecommunications infrastructure, industrial control systems, test and measurement instrumentation, and legacy embedded designs requiring drop-in replacement of obsolete FLEX 10K silicon. The wide I/O count (over 400 user I/Os) and embedded memory make it suitable for data-path bridging, protocol conversion, and bus-interface consolidation. When designing with this device, allocate sufficient decoupling capacitance near each power pin and use multiple ground returns. The CPGA package provides excellent thermal dissipation but requires a socket or careful PCB footprint for through-hole assembly. Configuration data is volatile - external configuration memory (EPC1 or EPC2) is required at every power-up. This page synthesizes distributor stock indicators, drop-in alternatives within the FLEX 10K family, and practical design notes not consolidated in the original Altera datasheet, helping engineers managing legacy FLEX 10K designs make informed replacement decisions.

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EPF10K10AQC208-2 - 10K-Gate FLEX-10KA FPGA, 208-PQFP | Intel
EPF10K10AQC208-2

EPF10K10AQC208-2 - 10K-Gate FLEX-10KA FPGA, 208-PQFP | Intel

The Intel EPF10K10AQC208-2 is a member of the FLEX-10KA family of Field-Programmable Gate Arrays (FPGAs) housed in a 208-pin Plastic Quad Flat Pack (PQFP/BFQFP) measuring 28x28 mm. The device integrates 576 logic elements, 72 logic array blocks (LABs), and 134 user I/O pins, with 6144 bits of embedded RAM. It operates from a 3.0 V to 3.6 V supply, uses 0.3 um CMOS SRAM process technology, and supports a maximum internal frequency of 142.86 MHz. Speed grade -2 corresponds to a maximum internal propagation delay in the medium-speed range. What is an FPGA? A Field-Programmable Gate Array is a semiconductor integrated circuit built around an array of configurable logic blocks (CLBs/LABs), programmable interconnects, and I/O cells, allowing the designer to implement arbitrary digital logic after fabrication. FPGAs occupy the middle ground between fixed-function ASICs and software-programmable microcontrollers, providing hardware-timed parallelism and reprogrammability. The FLEX-10KA family sits within the broader taxonomy of programmable logic devices (PLDs) -> FPGAs -> SRAM-based LUT FPGAs -> legacy/low-density FPGAs, and was historically used for glue logic, bus interfacing, and DSP pre-processing in telecom and industrial systems. Key features of the EPF10K10AQC208-2 include embedded array blocks (EABs) for memory or multiplier functions, JTAG-compliant boundary-scan test support, in-system programmability via the serial configuration EPROM interface, and 5V-tolerant I/O on selected pins. Each LAB combines 8 logic elements with a carry chain, while each EAB provides up to 2048 bits of dual-port RAM. Architecture: the FLEX-10KA device fabric uses a four-input look-up table (LUT) per logic element, fast row-and-column interconnect, and dedicated carry chains for arithmetic. The 0.3 um process delivers predictable timing closure for designs up to several thousand gates, with the FastTrack interconnect minimizing routing congestion. Typical applications include legacy industrial control, telecom glue logic, prototyping interfaces to legacy buses (PCI, ISA, VME), DSP pre-processing, and educational platforms. The 208-pin PQFP footprint is still widely supported in long-lifecycle industrial designs. Design consideration: the EPF10K10AQC208-2 requires an external configuration EPROM (EPC1/EPC2) on every power-up, since the SRAM-based fabric is volatile; designers must budget for the configuration circuit and the POR (power-on reset) timing. This page synthesizes distributor pricing, FLEX-10KA family variants, and practical configuration/design notes that go beyond what is printed in the original Altera FLEX-10KA datasheet.

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EPF10K10AQC208-3 - FLEX 10KA FPGA, 10K Gates, 208-PQFP | Altera
EPF10K10AQC208-3

EPF10K10AQC208-3 - FLEX 10KA FPGA, 10K Gates, 208-PQFP | Altera

The Altera EPF10K10AQC208-3 is a member of the FLEX 10KA embedded programmable logic family, delivering 10,000 typical gates (5,000 logic elements) of programmable logic capacity in a 208-pin Plastic Quad Flat Pack (PQFP / 208-BQFP) package with 134 user I/Os. It is a CMOS SRAM-based Field Programmable Gate Array (FPGA) designed for high-volume glue-logic, bus-interface, and state-machine applications that benefit from embedded array blocks (EABs) for on-chip memory and DSP functions. The "-3" speed grade corresponds to the slowest commercial FLEX 10KA timing bin (typical propagation delay of about 0.6 ns per LUT, internal clock rates typically below 100 MHz) and the "QC" suffix denotes the commercial 0 to 70 °C operating range. An FPGA is a semiconductor device whose digital logic function is defined after manufacture by a customer-supplied configuration bitstream stored in external SRAM or an on-board PROM. FPGAs sit hierarchically under programmable logic devices (PLD) and complement fixed-function ASICs by offering rapid prototyping, in-field re-programmability, and lower NRE cost for low-to-medium volumes. The FLEX 10KA family was the industry's first embedded programmable logic device family to provide System-on-a-Programmable-Chip (SOPC) integration through Embedded Array Blocks (EABs) that can implement on-chip RAM, ROM, FIFO or multiplier functions without consuming general-purpose logic. Key features of the EPF10K10AQC208-3 include 576 logic elements, 72 Logic Array Blocks (LABs), 6144 RAM bits distributed across the EABs, 3.3 V core supply, and 134 user I/O pins routed through Altera's MultiVolt I/O interface, which supports interfacing with 2.5 V, 3.3 V and 5 V devices on the same die. The EAB-based embedded memory subsystem provides true dual-port RAM, ROM and FIFO capability, eliminating the need for an external memory chip in many glue-logic designs. Architecturally, the device is built on a 0.42 µm CMOS SRAM process with four-level routing hierarchy and continuous InterconnectArray™ fast-path lines between adjacent LABs, which minimizes interconnect delay for near-neighbor logic. Each LAB contains eight Logic Elements (LEs), each with a 4-input look-up table, a programmable register, and a carry chain, so 8-bit counters, adders and arithmetic units can be packed densely. Configuration is loaded via the Altera ByteBlaster or BitBlaster cable into the on-chip SRAM configuration latches, which means the device is volatile and must be re-configured at every power-up from a serial PROM or system controller. Typical applications for the EPF10K10AQC208-3 include peripheral bus bridges (PCI, ISA, VME), telecom glue logic, industrial control state machines, prototype ASIC replacement, video and image processing front-ends, and test-and-measurement fixtures. Designers often drop this part in when migrating off older 5 V PLDs or when a quick-turn development cycle is required before committing to a gate-array. When designing with this device, ensure that your JTAG chain order, configuration scheme (PS, AS, or JTAG), and I/O bank voltages are correctly assigned in the Quartus or MAX+PLUS II project. The 208-pin PQFP has a relatively large 30.6 mm body footprint with 0.5 mm lead pitch and gull-wing terminations that require careful solder-pad design to avoid bridges during reflow. This page synthesizes distributor pricing from DigiKey, Mouser, Heisener and Octopart, surfaces drop-in and speed-grade alternatives from the same Altera / Intel FLEX 10KA family, and adds design notes that go beyond the bare datasheet summary.

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EPF10K10AQC208-3N - 10K-Gate FLEX 10KA FPGA, 208-PQFP | Intel
EPF10K10AQC208-3N

EPF10K10AQC208-3N - 10K-Gate FLEX 10KA FPGA, 208-PQFP | Intel

The Intel (formerly Altera) EPF10K10AQC208-3N is a member of the FLEX 10KA family of Field Programmable Gate Arrays (FPGAs) housed in a 208-pin Plastic Quad Flat Pack (PQFP/BFQFP) package. It integrates 576 logic elements (10,000 usable gates) and 134 user I/O pins in a 3.3 V CMOS device fabricated on a 0.3 µm process. According to the verified datasheet summary, the -3N speed grade targets commercial temperature ranges with a maximum internal clock frequency around 125 MHz. A Field Programmable Gate Array (FPGA) is a semiconductor IC containing an array of configurable logic blocks (CLBs), embedded memory, and programmable interconnect fabric. The FLEX 10KA family is Intel/Altera's classic SRAM-based look-up-table architecture with hierarchical routing - belonging to the broader taxonomy of programmable logic devices (PLDs) alongside CPLDs and structured ASICs. The embedded array blocks (EABs) provide on-chip dual-port RAM, allowing true-ASIC block-level integration without external memory on simple glue-logic designs. Key features include 576 logic elements organized into 72 Logic Array Blocks (LABs), 134 user I/Os, dedicated high-speed clock networks, MultiVolt I/O support for interfacing with 5.0 V, 3.3 V, and 2.5 V systems, and JTAG-compliant boundary-scan test support. The 208-pin PQFP footprint offers an inexpensive through-hole-friendly surface-mount option with gull-wing leads, well suited for legacy industrial backplanes where BGA rework tooling is not available. The architecture combines fine-grain LUT-based logic with coarse-grain EAB memory, giving designers 6,144 memory bits of embedded dual-port RAM. Each LAB contains eight logic elements, a local interconnect, and a fast carry chain for arithmetic. This combination lets the EPF10K10AQC208-3N replace dozens of discrete 74-series TTL parts and small PAL/GAL devices on a single chip, dramatically shrinking board area. Typical applications include glue logic replacement on legacy industrial control boards, telecommunications line-card state machines, low-volume prototyping that previously required gate-array NRE, and educational FPGA training platforms. The wide I/O count supports parallel bus interfaces and SDRAM control where modern Cyclone or Lattice parts would be cost-prohibitive. When designing with this device, plan for 3.3 V core supply with separate VCCIO banks for mixed-voltage I/O. Use the Quartus II (or legacy MAX+PLUS II) toolchain for synthesis and fitting. Because the EPF10K10AQC208-3N is in extended lifecycle, verify long-term availability before committing to new designs. This page synthesizes verified distributor pricing, pin-compatible drop-in alternatives from the same FLEX 10KA family, and practical design notes not collected in any single datasheet or distributor listing.

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EPF10K10ATC100-1 - FLEX 10KA FPGA, 10K Gates, 100-TQFP | Intel
EPF10K10ATC100-1

EPF10K10ATC100-1 - FLEX 10KA FPGA, 10K Gates, 100-TQFP | Intel

The Intel (Altera) EPF10K10ATC100-1 is a member of the FLEX 10KA embedded programmable logic device family, delivering 10,000 typical gates in a 100-pin TQFP package. Built on a 0.3 µm CMOS process, this FPGA integrates 576 logic elements across 72 LABs (Logic Array Blocks) and provides 66 user I/Os with embedded array blocks for system-on-a-programmable-chip (SOPC) integration. An FPGA (Field-Programmable Gate Array) is a semiconductor device containing configurable logic blocks (CLBs/LABs), programmable interconnect, and I/O cells that can be electrically reprogrammed to implement custom digital logic. The FLEX 10KA family sits in the legacy programmable-logic taxonomy as FLEX → FLEX 10K → FLEX 10KA → APEX 20K → Cyclone, walking up from embedded PLD to modern high-density FPGA. EPF10K10ATC100-1 occupies the low-density end of that hierarchy, targeting glue-logic, bus-bridging and control-plane applications rather than DSP or high-throughput datapath. Key features include a maximum internal operating frequency of 166.67 MHz, propagation delay of approximately 0.6 ns per logic element, and 6,144 bits of embedded memory. The device is supplied from a 3.3 V core supply with 5 V-tolerant I/O, and operates over the commercial 0 °C to +70 °C range. The -1 speed grade indicates the slowest bin of the family, suitable for cost-sensitive designs. The 10KA architecture combines a sea-of-gates logic fabric with Embedded Array Blocks (EABs) used as RAM/ROM, enabling on-chip memory without consuming general-purpose logic. Each EAB provides up to 2 Kbits of memory and can be cascaded to build wider or deeper memories. This combination of logic + memory in a single device made the FLEX 10KA a popular platform in the late 1990s for telecom, industrial control, and instrumentation front-end logic. Typical applications include legacy telecom line-card glue logic, industrial PLC and motor-control sequencers, ISA/PCI bus bridges and protocol converters, and test & measurement front-end logic. The wide 5 V-tolerant I/O is particularly useful for interfacing to legacy 5 V buses, ASICs, and microcontrollers without external level shifters. When designing with the EPF10K10ATC100-1, note that the device is in a legacy lifecycle state and should be sourced through authorized distributors of long-term stock or franchised brokers. PCB layout requires 4-layer board with solid ground plane for the 166 MHz internal operation; I/O drive strength is configurable in 7 steps but the device does not support LVDS - use an external translator for differential signalling. This page synthesizes distributor pricing, lifecycle risk, pin-compatible FLEX 10KA alternatives, and practical design notes that are not consolidated in the original Altera FLEX 10KA datasheet alone.

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EPF10K10ATC100-2 - FLEX 10KA FPGA, 10K Gates, 100-Pin TQFP | Intel / Altera
EPF10K10ATC100-2

EPF10K10ATC100-2 - FLEX 10KA FPGA, 10K Gates, 100-Pin TQFP | Intel / Altera

The Intel / Altera (formerly Altera) EPF10K10ATC100-2 is a member of the FLEX 10KA family of embedded programmable logic devices, providing 10,000 usable gates and 576 logic elements in a 100-pin TQFP (LFQFP) commercial-grade package. According to the Altera FLEX 10KA datasheet (A-DS-F10K-04.1), the device operates from a 3.3 V supply with a maximum toggle rate of approximately 142.86 MHz, and offers 66 to 274 user I/Os depending on package density. The part integrates an embedded array block (EAB) architecture that enables on-chip RAM and ROM, making it one of the industry's first System-on-a-Programmable-Chip (SOPC) implementations. What is a FLEX 10KA FPGA? The FLEX 10KA family is a second-generation embedded programmable logic device family from Altera that combines a fine-grained logic element array with coarse-grained embedded array blocks (EABs). Each EAB provides up to 2 Kbits of RAM, allowing designers to implement true dual-port or single-port memory, ROM, and complex arithmetic functions such as multipliers on-chip. The device sits in the hierarchy: programmable logic device -> CPLD/FPGA -> SRAM-based FPGA -> embedded array FPGA, and is well-suited to glue logic, bus interfacing, and low-to-mid density state machine implementations. Key features include 72 LABs (Logic Array Blocks), 576 logic elements, embedded EAB-based memory blocks, in-system programmability via JTAG, multi-volt I/O support, and pin-compatible migration across package densities. The "-2" speed grade reflects the propagation delay tier (approximately 0.6 ns internal). The 100-pin LFQFP package uses gull-wing leads with a 0.5 mm pitch and supports commercial temperature range 0 C to +70 C. The architecture is built on a 5 V tolerant, 0.42 um CMOS process that has been widely second-sourced and documented. Typical applications include PCI bus interface glue logic, telecommunications channel aggregation, industrial control and instrumentation, prototype ASIC emulation, and educational / development platforms where low cost and reusable logic density are critical. Designers transitioning away from discrete 74LS / 74F TTL logic find the FLEX 10KA particularly attractive because a single device can replace dozens of SSI/MSI packages while adding reprogrammability for late-stage design changes. When designing with this device, ensure JTAG chain integrity by adding proper TCK pull-up and TMS pull-up resistors per IEEE 1149.1 (BST - Boundary Scan Test). For new designs, the FLEX 10KA is functionally mature but considered legacy; consider Cyclone IV or MAX II for active production, or use EPF10K10ATC100-2 in maintenance of existing installed bases where proven in-system behavior matters more than active product lifecycle.

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EPF10K10ATC100-3N - 10K Gates FLEX-10KA FPGA, 100-TQFP | Intel
EPF10K10ATC100-3N

EPF10K10ATC100-3N - 10K Gates FLEX-10KA FPGA, 100-TQFP | Intel

The Intel EPF10K10ATC100-3N is a FLEX-10KA family Field-Programmable Gate Array (FPGA) delivering 10,000 typical gates, 576 logic elements (LEs), and 72 logic array blocks (LABs) in a 100-pin Thin Quad Flat Pack (TQFP) surface-mount package. Per the verified distributor data, the device exposes 66 user I/Os, provides 12,288 RAM bits of embedded memory, and operates from a 3.3 V supply across the commercial 0 C to 70 C temperature range, with a typical Fmax of 125 MHz at the -3 speed grade. An FPGA is a semiconductor device built around an array of configurable logic blocks (CLBs), programmable interconnect, and I/O cells that can be rewired after manufacture to implement arbitrary digital functions. Within the broader taxonomy, the EPF10K10ATC100-3N belongs to the SRAM-based programmable logic family, sitting between simple Complex Programmable Logic Devices (CPLDs) and modern high-density FPGAs. The FLEX-10KA family pioneered the embedded array block (EAB) concept, allowing on-chip memory and logic-rich functions to be instantiated without external components, which made it a System-on-a-Programmable-Chip (SOPC) for its era. Key features include a 0.3 micron CMOS SRAM process, 0.6 ns propagation delay through the FastTrack interconnect, in-system programmability via an external configuration EPROM, multiVolt I/O support, and joint Test Action Group (JTAG) boundary-scan test. The 100-pin TQFP footprint provides easy hand-soldering and breadboard-friendly prototyping compared with fine-pitch BGA packages in the same generation. Typical applications include glue logic replacement, bus-interface bridging, custom state-machine controllers, prototype ASIC validation, legacy industrial control retrofits, and educational digital-design platforms. With 10K gates of logic and 12 Kbits of block RAM, the part can host small to medium state machines, FIFO buffers, and parallel peripheral interfaces. When designing with this device, plan for an external configuration memory (such as the EPC2 or EPC8 family) and a JTAG header for in-system programming. The commercial temperature grade limits deployment to indoor equipment; for industrial or automotive environments, an I-grade or A-grade variant from the FLEX-10KA family should be selected. This page synthesizes distributor pricing, verified FLEX-10KA family drop-in alternatives, and practical design notes not collected in a single location on the manufacturer datasheet.

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EPF10K10ATC144-3N - FLEX 10KA FPGA 10K Gates 576 Cells | Intel
EPF10K10ATC144-3N

EPF10K10ATC144-3N - FLEX 10KA FPGA 10K Gates 576 Cells | Intel

The Intel (formerly Altera) EPF10K10ATC144-3N is a member of the FLEX 10KA family of embedded programmable logic devices (PLDs), delivering 10,000 typical gates, 576 logic cells, and 102 user I/Os in a 144-pin TQFP (LQFP) package. It is built on a 0.3 µm CMOS process, supports a 3.3 V core supply, and is qualified for commercial operating temperature (0 °C to 70 °C). This device was among the industry's first PLDs to provide System-on-a-Programmable-Chip (SOPC) integration, combining a logic array with embedded array blocks (EABs) for implementing on-chip RAM, ROM, and DSP-like functions. An FPGA (Field-Programmable Gate Array) is a semiconductor integrated circuit that can be configured by the customer after manufacture to implement arbitrary digital logic. FPGAs sit within the broader taxonomy of programmable logic devices (PLDs), alongside CPLDs and SPLDs, and historically bridged the gap between fixed-function ASICs and discrete logic. The FLEX 10KA family occupies a unique position in PLD history as one of the first families to embed memory blocks inside the fabric, eliminating the need for separate SRAM chips for FIFO and small memory structures. Key features of the EPF10K10ATC144-3N include 72 Logic Array Blocks (LABs), 576 logic elements, an embedded array of EABs, and 102 maximum user I/Os. The device supports in-system programmability via an IEEE 1149.1 (JTAG) interface and is supported by the legacy Altera MAX+PLUS II and Quartus design toolchains. With a maximum toggle frequency around 125 MHz in the -3 speed grade, the part targets glue-logic, bus-bridging, and low-density state-machine applications rather than high-performance signal processing. Architecturally, FLEX 10KA devices integrate a four-input LUT-based logic fabric with rows of embedded array blocks (EABs) that can each implement up to 2 Kbits of dual-port RAM or ROM. The routing interconnect uses continuous FastTrack channels, providing predictable timing that historically simplified design closure compared to segmented routing. The -3 speed grade corresponds to a faster propagation delay than the -2 and -1 grades, making the -3N variant the highest-performance member of the FLEX 10K10A family. Typical applications for the EPF10K10ATC144-3N include legacy telecom interface cards, industrial PLC glue logic, prototyping platforms, motor-control state machines, and embedded control bridges. The 144-pin TQFP package supports hand-soldering and rework, which is valuable for low-volume legacy systems and field upgrades. When designing with this part, engineers should verify MAX+PLUS II or Quartus tool support because this family is mature and tool compatibility matters for long-term maintenance. The 3.3 V supply requirement and 0 °C to 70 °C commercial temperature window should be checked against the target environment; the EPF10K10ATI144-3N industrial-grade variant is required for extended temperature operation. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet. All specifications are sourced from the Intel/Altera FLEX 10KA datasheet and current distributor listings as of 2026-09-11.

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EPF10K10ATI144-4 - FLEX 10K FPGA, 10K Gates, TQFP-144 | Altera
EPF10K10ATI144-4

EPF10K10ATI144-4 - FLEX 10K FPGA, 10K Gates, TQFP-144 | Altera

The Altera (now Intel) EPF10K10ATI144-4 is a member of the FLEX 10K family of Embedded Programmable Logic Devices (PLDs), delivering approximately 10,000 usable gates in a 144-pin TQFP package. It integrates a Look-Up Table (LUT) based logic array with embedded array blocks (EABs) for memory, providing 6,144 flip-flops, 576 logic elements, and 102 user I/O pins. The device operates from a 3.0 V to 3.6 V supply and supports the industrial -40 °C to +85 °C temperature range. A Field-Programmable Gate Array (FPGA) is a semiconductor IC containing an array of configurable logic blocks (CLBs), programmable interconnect, and I/O cells that designers configure after manufacturing. FPGAs sit hierarchically under programmable logic, alongside CPLDs, and above fixed-function ASICs in design flexibility. The FLEX 10K was Altera's first family to embed dedicated memory blocks (EABs), enabling on-chip RAM, ROM, and FIFO functions, and was widely used in glue logic, bus interfacing, and prototype ASIC replacement. The EPF10K10ATI144-4 offers 4 dedicated inputs and supports LVTTL and LVCMOS I/O standards via mixed-voltage configuration. With a maximum clock frequency documented at 625 MHz (per the related -1 speed grade datasheet reference), the -4 speed grade variant is positioned for higher-density, lower-speed designs where timing closure is comfortable. It is SRAM-based, requiring a configuration device such as the EPC2 or EPC1 for stand-alone boot, and supports JTAG (IEEE 1149.1) boundary-scan testing. Typical applications include industrial control glue logic, peripheral bus bridging, telecommunication line-card interfaces, legacy ASIC replacement, and test instrumentation front-ends. The TQFP-144 footprint makes the part friendly for hand-solderable prototypes and through-hole-compatible adapter boards where BGAs would be impractical. When designing with this device, plan for an external configuration PROM (EPC1/EPC2) and a JTAG header for in-system programming. PCB layout should keep configuration clock and data traces short and length-matched, and the 3.3 V core rail must be decoupled with 0.1 µF ceramic capacitors at every supply pin cluster. This page synthesizes distributor pricing, drop-in same-family alternatives, lifecycle status, and practical configuration notes not aggregated on a single manufacturer or distributor page. All key parameters are anchored to the verified EPF10K10 datasheet family and Octopart distributor listings.

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EPF10K10LC84-3 - FLEX 10K FPGA, 10K Gates, 84-LCC | Intel/Altera
EPF10K10LC84-3

EPF10K10LC84-3 - FLEX 10K FPGA, 10K Gates, 84-LCC | Intel/Altera

The Intel/Altera EPF10K10LC84-3 is a member of the FLEX 10K family of embedded programmable logic devices, delivering 10,000 typical gates and 576 logic elements in a 84-pin LCC (J-Lead) surface-mount package. Housed in a J-bend 84-LCC (PLCC-style) package code QCCJ, the device provides 59 user I/O pins with MultiVolt I/O capability, allowing VCCIO to be powered at a different voltage than VCCINT for mixed-voltage system interfacing. What is a FLEX 10K FPGA? The FLEX 10K (Flexible Logic Element matriX) family was the industry's first embedded programmable logic device family to provide System-on-a-Programmable-Chip (SOPC) integration. FPGAs in this hierarchy sit at the top of the programmable logic pyramid: PLD (programmable logic device) > CPLD (complex PLD) > FPGA (field-programmable gate array). Each FLEX 10K device embeds an array of logic elements (LEs), embedded array blocks (EABs) for memory/megafunctions, and a continuous routing fabric that allows large sequential and combinational designs to be implemented. Key specifications include 6,144 typical gates / 10,000 maximum gates, 576 logic elements, 3 embedded array blocks providing up to 6,144 RAM bits, and a commercial operating temperature grade (0C to 70C). The -3 speed grade denotes the slowest of the FLEX 10K commercial speed bins, with a worst-case propagation delay around 0.6 ns per logic element in the datasheet's typical tables. Architecturally, the FLEX 10K uses a CMOS SRAM-based configuration cell that must be loaded from a serial configuration EPROM at every power-up. Each embedded array block can be configured as a memory block or as a megafunction (FIFO, multiplier, adder) using Altera's MAX+PLUS II or Quartus toolchains. The MultiVolt I/O pins support PCI-clamping-diode, slew-rate control, and open-drain options on a pin-by-pin basis. Typical applications include PCI bridge glue logic, peripheral bus interfaces, DSP co-processors, custom state machines, and legacy industrial control designs. Because the FLEX 10K family is end-of-life, the EPF10K10LC84-3 today is typically used for maintenance of legacy boards and second-source production. Designers should confirm long-term availability before specifying it in new designs. When designing with this FPGA, verify configuration memory requirements: a single EPC2 or EPC1 configuration EPROM is sufficient for 10K-gate designs. JTAG boundary-scan is supported via the JTAG pins for board-level test. Pin migration between the 84-LCC package and the same die in 144-pin TQFP/QFP packages is possible because the silicon die is shared. This page synthesizes distributor stock levels, drop-in FLEX 10K family alternatives sharing the 84-LCC footprint, and practical design notes that are not collected in any single manufacturer datasheet.

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EPF10K10LC84-4 - FLEX 10K FPGA, 10K Gates, 84-PLCC | Intel / Altera
EPF10K10LC84-4

EPF10K10LC84-4 - FLEX 10K FPGA, 10K Gates, 84-PLCC | Intel / Altera

The Intel (formerly Altera) EPF10K10LC84-4 is a FLEX 10K family Field Programmable Gate Array (FPGA) delivering 10,000 typical gates with 576 logic elements (LEs) in an 84-pin Plastic Leaded Chip Carrier (PLCC) J-Lead package. Operating from a 5V supply at up to 125 MHz internal performance, this -4 speed grade part balances timing margin and power for cost-sensitive embedded designs that need true SRAM-based reprogrammable logic. A Field Programmable Gate Array (FPGA) is a programmable logic device containing an array of configurable logic blocks (CLBs), programmable interconnects, and I/O cells that the designer configures after manufacture. The FLEX 10K family pioneered the embedded array block (EAB) architecture, allowing megafunctions such as RAM, ROM, and DSP multipliers to be mapped into dedicated silicon. This hierarchical structure (FPGA -> programmable logic device -> logic IC -> integrated circuit) makes FLEX 10K devices suitable for System-on-a-Programmable-Chip (SOPC) integration in glue logic, bus interfacing, and small state-machine applications. The EPF10K10LC84-4 offers 72 logic array blocks (LABs), 59 usable user I/Os, and 6,144 RAM bits distributed across EABs. It is fabricated on a 0.42 um CMOS process and supports in-system programmability via the IEEE 1149.1 JTAG boundary-scan interface. The device is offered in a commercial 0C to 70C temperature grade and is footprint-compatible with the rest of the FLEX 10K PLCC-84 family, enabling migration to higher-density variants such as EPF10K30 and EPF10K50 without PCB rework. Designers choose the EPF10K10LC84-4 for low-to-moderate complexity designs where non-volatile SRAM-based configuration, JTAG ISP, and a familiar Quartus/MAX+PLUS II toolchain are required. It is widely deployed in industrial control boards, legacy telecom interfaces, and educational platforms where the 84-PLCC through-hole-friendly footprint simplifies prototyping and rework compared with BGA-only contemporaries. When designing, observe 5V VCCIO tolerance and provide proper decoupling (100 nF + 10 uF) near each supply pin. Configuration data must be loaded from a serial EPROM or JTAG at power-up. Note that the FLEX 10K family is mature; lead time and pricing should be confirmed at the time of order. This page consolidates distributor inventory, drop-in compatible alternatives, and practical design notes not found in the original FLEX 10K datasheet, making sourcing and second-source decisions faster for procurement engineers.

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EPF10K10LC84-4N - FLEX 10K FPGA, 10K Gates, 576 Cells | Altera
EPF10K10LC84-4N

EPF10K10LC84-4N - FLEX 10K FPGA, 10K Gates, 576 Cells | Altera

The Altera (Intel) EPF10K10LC84-4N is a FLEX 10K family Field-Programmable Gate Array (FPGA) with 10,000 typical gates, 576 logic elements (cells), 72 Logic Array Blocks (LABs), and 59 user I/Os, housed in an 84-pin J-Lead Plastic Leaded Chip Carrier (PLCC, LCC-84) package. Built on a 0.42 µm CMOS SRAM process, the device operates from a 5 V supply and is speed grade -4 (around 125 MHz internal performance). The EPF10K10LC84-4N is part of the industry's first embedded programmable logic device family, providing System-on-a-Programmable-Chip (SOPC) integration through an embedded array for implementing megafunctions such as efficient memory and specialized logic. An FPGA (Field-Programmable Gate Array) is a semiconductor IC containing an array of configurable logic blocks (CLBs/LABs), programmable interconnects, and I/O cells that the user can define after manufacture via a hardware description language (HDL) and a configuration bitstream. In the system hierarchy, the FPGA sits above general-purpose logic ICs and below ASICs, occupying the niche where moderate-to-high gate counts, parallel datapath processing, and fast prototyping are required without NRE cost. The FLEX 10K family introduced the embedded array block (EAB) concept, allowing on-chip RAM and DSP-like megafunctions, and was Altera's flagship from the mid-1990s before being superseded by the APEX, Cyclone, and Stratix families. Key features of the EPF10K10LC84-4N include 10K typical gates, 576 logic cells across 72 LABs, 6,144 memory bits, 59 usable I/Os, in-system reprogrammability via SRAM configuration, JTAG (IEEE 1149.1) boundary-scan support, multi-volt I/O, and a commercial 0 °C to 70 °C operating range. Speed grade -4 positions the part at a moderate performance tier within the family, with internal propagation delays on the order of 0.6 ns and counter speeds near 125 MHz. The EPF10K10LC84-4N uses Altera's SRAM-based look-up-table logic element with FastTrack continuous routing interconnect and embedded array blocks for distributed memory, allowing designers to implement glue logic, bus interfaces, state machines, and small signal-processing datapaths on a single device. Configuration is loaded from a serial EPROM (EPC1/EPC2) or via JTAG, and the design is captured in MAX+PLUS II or Quartus using VHDL/Verilog. Typical applications include industrial control and factory-automation glue logic, telecom interface cards, legacy test-and-measurement equipment, prototype ASIC replacement, and educational digital-design platforms. Its 5 V tolerant I/O and through-hole-friendly PLCC package made it especially popular in 1990s-era designs that remain in long-lifecycle production today. When designing with the EPF10K10LC84-4N, ensure proper decoupling (100 nF ceramic + 10 µF bulk per supply pin) and follow Altera's configuration schematic in the FLEX 10K Device Handbook. The PLCC package is socket-compatible with the EPF10K10LC84-4 (commercial, no -N suffix marker) and EPF10K10LC84-3 (faster speed grade), enabling easy upgrades on the same PCB footprint. This page synthesizes distributor pricing, drop-in same-package alternatives from the FLEX 10K family, JTAG configuration guidance, and lifecycle status not consolidated on a single manufacturer datasheet.

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EPF10K10LI84-4 - FLEX 10K FPGA, 10K Gates, 84-PLCC | Altera (Intel)
EPF10K10LI84-4

EPF10K10LI84-4 - FLEX 10K FPGA, 10K Gates, 84-PLCC | Altera (Intel)

The Altera (Intel) EPF10K10LI84-4 is a member of the FLEX 10K family of Field-Programmable Gate Arrays (FPGAs), providing approximately 10,000 usable gates, 576 logic elements (cells), and 59 user I/O pins in a 84-pin Plastic Leaded Chip Carrier (PLCC) package. It is built on a 0.42 µm CMOS SRAM process technology and operates from a 5 V supply, with the suffix "-4" denoting the speed grade. What is an FPGA? An FPGA (Field-Programmable Gate Array) is a type of programmable logic device (PLD) that contains an array of configurable logic blocks (CLBs), programmable interconnects, and I/O cells, all of which can be reconfigured by the designer after manufacturing. FPGAs sit higher in the silicon hierarchy than fixed-function ASICs because they trade raw performance for design flexibility and time-to-market. The FLEX 10K family, introduced by Altera in the mid-1990s, was the industry's first embedded programmable logic family and pioneered the System-on-a-Programmable-Chip (SOPC) concept by integrating megafunctions such as embedded memory blocks (EABs) and specialized logic into a single device. Key features of the EPF10K10LI84-4 include 576 logic elements, 12 embedded array blocks (EABs) providing up to 6,144 bits of RAM, 59 maximum user I/O, in-system programmability via the Altera MAX+PLUS II / Quartus (legacy) toolchain, and four dedicated clock input pins. The device is offered in a commercial speed grade with a 125 MHz internal performance figure. Its PLCC-84 footprint supports both socketed prototyping and surface-mount production lines. Architecturally, the FLEX 10K family combines a fine-grained logic element fabric with coarse-grained EABs, allowing designers to implement wide functions, FIFOs, and RAM/ROM without consuming general-purpose logic. The EPF10K10LI84-4 supports SRAM-based configuration, meaning it must be configured at every power-up from a serial or parallel PROM. Typical applications include glue logic replacement, bus interface bridging (PCI, ISA, VME), embedded control state machines, prototyping of ASIC designs, and industrial controller front-ends. The wide I/O count and embedded memory make it suitable for systems that need modest logic density plus small RAM blocks on a single chip. Designers should plan configuration memory (an EPC2 or compatible serial configuration PROM) and a JTAG chain for in-system programming. The 5 V core supply simplifies legacy system integration but means the EPF10K10LI84-4 is not directly pin-compatible with modern 3.3 V-only FPGAs; level-translation buffers are required when interfacing to newer logic. This page synthesizes distributor stock and price data, drop-in same-family alternatives, and practical design notes not found in the original FLEX 10K datasheet alone.

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EPF10K10LI84-4N - FLEX 10K 10K Gates FPGA 5V 84-PLCC | Altera
EPF10K10LI84-4N

EPF10K10LI84-4N - FLEX 10K 10K Gates FPGA 5V 84-PLCC | Altera

The Altera EPF10K10LI84-4N is a member of the FLEX 10K family of embedded programmable logic devices (PLDs), delivering approximately 10,000 usable gates, 576 logic elements, and 6144 bits of embedded memory in a 84-pin Plastic Leaded Chip Carrier (PLCC) package. Built on a 0.42 µm CMOS process, the device operates from a 5 V supply and is specified for industrial temperature range operation. The FLEX 10K architecture combines a logic array with an embedded array block (EAB), enabling System-on-a-Programmable-Chip (SOPC) integration with on-chip megafunctions such as efficient memory, FIFOs, and DSP primitives. An FPGA (Field Programmable Gate Array) is a type of programmable logic device whose internal logic cells, interconnect, and I/O are configured by the user after manufacture. Within the broader hierarchy, FPGAs sit alongside CPLDs in the PLD family, and they extend the concept by offering high gate counts, block RAM, and embedded multiplier/DSP blocks. FPGAs are commonly used to prototype ASICs, implement glue logic, drive high-speed parallel interfaces, and accelerate data-path computation in telecommunications, industrial automation, test equipment, and legacy embedded designs. Key features of the EPF10K10LI84-4N include 72 logic array blocks (LABs) of 8 logic elements each, 3 embedded array blocks (EABs) providing 6144 RAM bits, and 59 user I/O pins. The device supports in-system programmability via Altera's MAX+PLUS II or Quartus design tools using SRAM configuration, and it can be reconfigured in-circuit for design iterations or field upgrades. Architecturally, the FLEX 10K fabric provides continuous, fast interconnect channels that wire any logic element to any other, with predictable timing well-suited for synchronous state machines, register-rich glue logic, and pipelined datapaths. The 0.42 µm process yields robust 5 V I/O tolerance, which simplifies interfacing to legacy TTL logic commonly found in industrial controllers, instrumentation, and aerospace subsystems. Typical applications of the EPF10K10LI84-4N include industrial control boards, telecommunications glue logic, legacy instrumentation front-ends, custom bus bridges, and prototyping platforms for ASIC verification. Designers commonly pair the FPGA with EPROM/Flash configuration memories and 5 V bus transceivers. When designing with this part, note that it is not pin-compatible with later 3.3 V FLEX 10KA devices - verify any cross-reference carefully against footprint and voltage.

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EPF10K10QC208-3 - 10K Gates FLEX 10K FPGA, 134 I/O, 208-PQFP | Intel
EPF10K10QC208-3

EPF10K10QC208-3 - 10K Gates FLEX 10K FPGA, 134 I/O, 208-PQFP | Intel

The Intel (formerly Altera) EPF10K10QC208-3 is a FLEX 10K family Field-Programmable Gate Array (FPGA) with 10,000 gates, 576 logic elements, and 134 user I/Os, housed in a 208-pin Plastic Quad Flat Pack (PQFP/BFQFP) package. Operating from a 5 V supply, this device is fabricated on a 0.42 µm CMOS process and targets the industry's first embedded programmable logic family, providing System-on-a-Programmable-Chip (SOPC) integration through its embedded array blocks (EABs). The "-3" speed grade delivers a propagation delay of approximately 0.6 ns, suitable for 125 MHz designs. With 72 Logic Array Blocks (LABs) and built-in low-skew clock distribution trees, the part supports fast, predictable timing closure across complex state machines and datapath logic. An FPGA (Field-Programmable Gate Array) is a type of integrated circuit containing an array of programmable logic blocks, configurable interconnects, and I/O cells that can be rewired after manufacturing to implement arbitrary digital functions. The FLEX 10K family pioneered the embedded array block concept, where each EAB provides up to 2,048 bits of RAM that can be used as memory, lookup tables, or glue logic - effectively giving the designer a small ASIC plus reconfigurable fabric on one die. FPGAs sit within the broader taxonomy of programmable logic devices (PLDs), alongside CPLDs and PROMs, and represent the highest-density tier of programmable logic. Key features include 10,000 typical gates (up to ~31,000 maximum), 6,144 flip-flops distributed across 72 LABs, embedded FastTrack interconnect for continuous routing, and 100% functional test coverage. The device supports both 3.3 V and 5.0 V I/O operation depending on bank configuration, includes JTAG boundary-scan, and offers tri-state emulation for ASIC prototyping. The 208-pin PQFP package provides 134 usable I/O pins plus dedicated configuration, clock, and power pins. Typical applications include glue logic and ASIC prototyping, telecommunications interface bridging, industrial control and instrumentation, glue logic between microprocessors and peripherals, and parallel bus interfacing. The EAB blocks also make the EPF10K10QC208-3 well-suited to small FIFOs, register files, and DSP datapath elements in cost-sensitive embedded designs. When designing with this device, ensure proper decoupling (0.1 µF + 10 µF per supply pin) and follow Altera's configuration guidelines for JTAG or EPC configuration memory. Note that the FLEX 10K family has been EOL since the early 2000s; verify lifecycle status and consider Cyclone or MAX series for new designs. This page synthesizes current distributor pricing, drop-in same-brand Intel/Altera FLEX 10K alternatives, and practical design notes not consolidated in the original datasheet.

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EPF10K10QC208-4 - Flex 10K FPGA, 10K Gates, 208-PQFP | Altera
EPF10K10QC208-4

EPF10K10QC208-4 - Flex 10K FPGA, 10K Gates, 208-PQFP | Altera

The Altera (Intel) EPF10K10QC208-4 is a member of the FLEX 10K family of Field Programmable Gate Arrays (FPGAs) delivering 10,000 typical gates, 576 logic elements, and 134 user I/Os in a 208-pin Plastic Quad Flat Pack (PQFP) package. Speed grade -4 denotes a specific propagation delay bin, and the device is fabricated on a 0.42 µm CMOS process operating at 5 V with a maximum internal clock frequency of 125 MHz. An FPGA (Field Programmable Gate Array) is a type of programmable logic device (PLD) that lets engineers implement arbitrary digital logic via a sea of configurable logic blocks (CLBs) wired by programmable interconnect. FPGAs sit hierarchically between simple PLDs (PALs/GALs) and full custom ASICs - offering higher density and faster time-to-market than either. The FLEX 10K family pioneered embedded array blocks (EABs) for on-chip memory plus logic, enabling System-on-a-Programmable-Chip (SOPC) integration that was novel for its era. Key features include 72 Logic Array Blocks (LABs), 6144 typical RAM bits distributed in EABs, multi-volt I/O compatibility (3.3 V and 5.0 V), built-in low-skew clock distribution trees, FastTrack continuous routing structure, tri-state emulation for JTAG boundary-scan testing, and 100% functional testing of all devices. The architecture supports in-system programming via the ByteBlaster or BitBlaster download cables. Technical depth: the FLEX 10K architecture combines a fine-grained logic fabric (each LE contains a 4-input LUT and a flip-flop) with coarse-grained embedded array blocks optimized for memory and arithmetic functions. The 0.42 µm process and 5 V core supply were state of the art when the family was introduced, and the FastTrack routing fabric delivers predictable interconnect delays critical for synchronous design timing closure. Typical applications include legacy telecom interfaces, industrial control logic, glue logic replacement, prototyping platforms for ASIC designs, and educational digital design labs. The 134 I/Os in the 208-PQFP package make it suitable for bus-oriented designs with multiple parallel peripherals. When designing with this part, ensure the Quartus II or MAX+PLUS II toolchain is configured for the FLEX 10K device family. JTAG boundary-scan and the built-in SRAM-based configuration mean the device must be reconfigured at every power-up - non-volatile configuration via an EPC1 or EPC2 configuration EPROM is recommended for production. This page synthesizes distributor pricing, drop-in same-family alternatives (EPF10K10QC208-3, EPF10K10QC208-3N), and practical design notes not found in the manufacturer datasheet - valuable context for engineers maintaining legacy FLEX 10K designs.

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EPF10K10QC208-4N - FLEX 10K FPGA, 10K Gates, 208-PQFP | Intel / Altera
EPF10K10QC208-4N

EPF10K10QC208-4N - FLEX 10K FPGA, 10K Gates, 208-PQFP | Intel / Altera

The Intel / Altera EPF10K10QC208-4N is a member of the FLEX 10K family of FPGAs that delivers 10,000 usable gates with 576 logic elements, 72 LABs/CLBs, and 134 user I/Os in a 208-pin PQFP (Plastic Quad Flat Pack) package. Fabricated on a 0.42 µm CMOS SRAM-based process and operating from a single 5 V supply, the device supports system clock frequencies up to 125 MHz with the -4 speed grade, and includes 6,144 bits of embedded memory. FLEX 10K is the first family to combine the high density of gate arrays with the programmability of FPGAs, integrating a sea-of-gates architecture called FastTrack Interconnect that delivers predictable, fixed interconnect delays regardless of routing density. The device family introduced the concept of embedded array blocks (EABs) used for memory and arithmetic functions, which became the architectural foundation for later Altera Stratix families. The EPF10K10QC208-4N is a second-source-friendly 5 V logic part that maps cleanly into industrial and legacy telecom/industrial designs. Key features include 134 user I/Os with TTL/CMOS compatible drivers, 72 LABs containing 8 logic elements each, on-chip tri-state emulation for bus functions, dedicated high-speed clock distribution trees with low skew, and a built-in Joint Test Action Group (JTAG) boundary-scan interface (IEEE 1149.1). The device also provides flexible configuration modes (active serial, passive serial, passive parallel) and is supported by the legacy Altera MAX+PLUS II tool chain. The architecture separates logic (LABs) from interconnect (FastTrack rows/columns), giving designers predictable timing closure on legacy 5 V designs. Logic elements (LEs) contain a 4-input LUT, a programmable register, and a carry chain for fast arithmetic. EABs provide RAM/ROM and arithmetic functions, eliminating the need for separate memory chips in small designs. Configuration is loaded from a serial EPROM or microcontroller, supporting in-system re-programmability. Typical applications include industrial control glue logic, telecommunications line cards, legacy 5 V microcontroller/ASIC replacement, prototype ASIC emulation, and low-density DSP pre/post-processing. The wide 5 V tolerance also makes the part a popular choice for legacy avionics, factory automation, and instrumentation that has not migrated to 3.3 V. When designing with this FPGA, ensure that all unused I/Os are properly terminated and that the JTAG chain is correctly buffered for board-level test access. The 5 V supply and PQFP package simplify PCB layout but the 208-pin PQFP has finer pitch than modern BGAs, so careful signal integrity analysis is recommended for high-speed signals.

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EPF10K10QI208-4 - FLEX 10K FPGA, 10K Gates, 208-PQFP | Intel / Altera
EPF10K10QI208-4

EPF10K10QI208-4 - FLEX 10K FPGA, 10K Gates, 208-PQFP | Intel / Altera

The Intel (formerly Altera) EPF10K10QI208-4 is a member of the FLEX 10K family of SRAM-Lookup-Table based Field-Programmable Gate Arrays (FPGAs) housed in a 208-pin Plastic Quad Flat Pack (PQFP / BFQFP) package. The device integrates approximately 10,000 typical gates, 576 logic elements, 72 Logic Array Blocks (LABs), and 134 user I/Os. It is a loadable PLD with CMOS process technology and a propagation delay of approximately 0.6 ns. A Field-Programmable Gate Array (FPGA) is a semiconductor integrated circuit that can be electrically programmed after manufacture to implement arbitrary digital logic functions, combining the integration density of an ASIC with the design flexibility of programmable logic. The FLEX 10K family was the industry’s first device family to embed an array block (EAB / Embedded Array Block) alongside the logic array, enabling System-on-a-Programmable-Chip (SOPC) integration of megafunctions such as RAM, ROM, FIFO, and multiplier blocks together with general-purpose logic. The FLEX 10K sits within the broader taxonomy of programmable logic devices (PLD) -> CPLD -> FPGA -> SRAM-based FPGA. Key features of the EPF10K10QI208-4 include 72 LABs and 134 user I/Os supporting distributed interconnect, an industrial operating temperature grade (I-suffix), and a 5 V core supply voltage with 3.3 V capable I/O operation per the FLEX 10K datasheet family. The '-4' speed grade denotes the standard speed bin within the FLEX 10K family. The PQFP-208 surface-mount package provides gull-wing leads suitable for conventional reflow soldering and standard PCB assembly lines. The FLEX 10K architecture combines a fine-grained logic fabric with embedded array blocks (EABs) used for implementing memory and complex arithmetic functions. Each LAB contains multiple Logic Elements (LEs), each comprising a 4-input LUT, a programmable flip-flop, and dedicated carry and cascade chains that accelerate arithmetic and wide fan-in functions. The interconnect hierarchy includes row and column FastTrack Interconnect lines that span the entire device, providing predictable timing and high utilization. MultiVolt I/O supports interfacing with both 5 V and 3.3 V peripherals without external level shifters. Typical applications include glue-logic replacement in industrial control, telecommunications backplane interfacing, DSP co-processing and custom coprocessor design, prototype ASIC validation, and legacy parallel-bus bridging. Designers frequently use FLEX 10K devices in industrial and factory-automation systems because of the long-term availability of the family and the industrial temperature grade of the 'I' part. In telecommunications, the device is well-suited to low-density channelized interface adaptation and protocol conversion tasks. In ASIC prototyping, FLEX 10K parts are still referenced in many legacy designs that have been maintained for years. When designing with this device, ensure that the JTAG chain and configuration EEPROM (typically an EPC2 or EPC1) match the FLEX 10K configuration scheme (PS or JTAG), and respect the 5 V supply ramp timing to avoid in-rush current issues. The PQFP-208 footprint is large by modern standards, so allow adequate board area and consider migration to a TQFP-144 or BGA-packaged FLEX 10K variant where board density is constrained. This page synthesizes distributor inventory, drop-in same-package alternatives from the FLEX 10K family, and practical design notes for engineers maintaining or sourcing legacy Altera FPGA designs.

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EPF10K10QI208-4N - FLEX 10K FPGA, 10K Gates, 208-PQFP | Intel
EPF10K10QI208-4N

EPF10K10QI208-4N - FLEX 10K FPGA, 10K Gates, 208-PQFP | Intel

The Intel (formerly Altera) EPF10K10QI208-4N is a member of the FLEX 10K family of SRAM-based Field Programmable Gate Arrays, delivering approximately 10,000 usable gates, 576 logic elements (LEs), and 134 user I/O pins in a 208-pin Power Quad Flat Pack (PQFP / BFQFP) package with industrial -40C to +85C temperature grading. What is an FPGA? A Field-Programmable Gate Array (FPGA) is a semiconductor IC containing an array of configurable logic blocks (CLBs / LABs), programmable interconnect, and I/O cells that the end user can tailor after manufacture. FPGAs sit in the broader hierarchy: programmable logic device (PLD) -> CPLD -> FPGA -> SRAM-based FPGA. The FLEX 10K family was Altera's first device to embed array blocks (EABs) usable as embedded RAM, a stepping stone toward modern system-on-chip FPGAs. Key features of the EPF10K10QI208-4N include 72 Logic Array Blocks (LABs), 12 Embedded Array Blocks (EABs) providing up to 6,144 bits of RAM, a 5 V CMOS core with 4.5 V to 5.5 V supply tolerance, JTAG-based IEEE 1149.1 boundary-scan support, and in-system programmability via the serial configuration EPROM interface. The 'I' suffix denotes the industrial temperature grade, and the '4' speed grade corresponds to a commercial/industrial timing bin. Architecturally, each LAB contains 8 LEs, each LE built from a 4-input look-up table, a programmable flip-flop, and dedicated carry/ cascade logic. The 12 EABs each provide 2,048 bits of RAM (256x8) that can be cascaded for deeper FIFOs or wider data paths, making the FLEX 10K useful for glue logic, bus interfaces, and modest DSP pipelines. Typical applications include telecommunications line-card glue logic, industrial control state machines, legacy ISA/PCI bridge interfaces, ASIC prototyping, and DSP pre/post-processing. Designers should still consider the device NRND (Not Recommended for New Designs) by Intel - this part is suitable for sustaining legacy designs or repair stock. When designing in this device, verify the Quartus / MAX+plus II toolchain version supports the FLEX 10K family and confirm 5 V tolerance on every I/O against downstream peripherals. The PQFP-208 footprint is also worth noting - leaded packages ease hand-rework but consume substantially more PCB area than modern BGAs. This page consolidates distributor pricing across 21 sources, drop-in same-package alternatives within the FLEX 10K family, and design notes covering power-pin decoupling and configuration mode selection that are not collected in any single manufacturer document.

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EPF10K10TC144-3 - 10K Gates, 102 I/O FLEX 10K FPGA | Intel
EPF10K10TC144-3

EPF10K10TC144-3 - 10K Gates, 102 I/O FLEX 10K FPGA | Intel

The Intel EPF10K10TC144-3 is a member of the FLEX 10K family of SRAM-based FPGAs, providing 10,000 usable gates, 576 logic elements (logic cells), and 102 user I/O pins in a 144-pin TQFP package. It is built on a 0.42 µm CMOS process and operates from a 5 V supply, with a -3 speed grade targeting commercial timing closure. The device integrates 72 logic array blocks (LABs) and embedded array blocks (EABs) for memory and complex logic functions. A Field Programmable Gate Array (FPGA) is a semiconductor device built around an array of configurable logic blocks (CLBs), programmable interconnects, and I/O cells, allowing engineers to implement custom digital logic without fabricating an application-specific IC. Within the broader semiconductor taxonomy, an FPGA sits under programmable logic devices (PLDs) -> logic ICs -> integrated circuits. The FLEX 10K family specifically pioneered embedded array blocks (EABs), which provide on-chip SRAM for fast FIFO/RAM/CAM storage and reduce system chip count versus discrete SRAM plus CPLD designs. Key features of the EPF10K10TC144-3 include 6,144 typical gate count marketing figure, 12,288 bits of embedded memory across EABs, in-system programmability through the IEEE 1149.1 JTAG interface, and 102 user I/O with multi-voltage I/O support (3.3 V and 5 V tolerant). The device supports configuration via configuration EPROMs, JTAG, or controller-driven serial/parallel modes. Operating junction temperature spans 0 °C to +85 °C for the commercial -3 speed grade. The architecture combines a fine-grained logic element (LE) fabric with coarse-grained EABs of 2,048 bits each, delivering an efficient trade-off between random logic density and block-memory throughput. I/O banks support selectable drive strength and slew-rate control to simplify mixed 3.3 V / 5 V board designs. The 144-pin TQFP package exposes 102 user I/O, with the remaining pins reserved for power, ground, configuration, and JTAG signals. Typical applications include telecommunications interface glue logic, industrial control and instrumentation, prototyping ASICs, custom peripheral controllers, and legacy digital signal preprocessing. The -3 speed grade is well suited for bus interfaces, glue logic between microcontrollers and peripherals, and pre-silicon ASIC/ASSP emulation where deterministic timing across moderate clock frequencies (up to 125 MHz internally) is sufficient. When designing with this part, ensure JTAG chain integrity by including proper TCK pull-down and TMS pull-up resistors, and observe VCCINT/VCCIO supply sequencing. Note that the FLEX 10K family is mature but classified NRND by Intel; verify long-term availability before committing to new production designs, or plan a migration path to Cyclone series devices. This page synthesizes distributor pricing, pin-compatible drop-in alternatives, and practical design considerations across the FLEX 10K family not consolidated in any single source.

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EPF10K10TC144-3N - FLEX 10K FPGA, 10K Gates, 144-LQFP | Intel
EPF10K10TC144-3N

EPF10K10TC144-3N - FLEX 10K FPGA, 10K Gates, 144-LQFP | Intel

The Intel EPF10K10TC144-3N is a member of the FLEX 10K family of SRAM-look-up-table-based field-programmable gate arrays (FPGAs), featuring 10,000 typical gates (31,000 maximum gates), 576 logic elements, 72 logic array blocks (LABs), and 102 user I/Os, all housed in a 144-pin LQFP (TQFP) package rated for commercial temperature. It supports MultiVolt I/O interface and offers 5.0-V tolerant input pins, enabling mixed-voltage system designs without external level shifters. A Field-Programmable Gate Array (FPGA) is a semiconductor integrated circuit that can be configured by the customer or designer after manufacturing to implement arbitrary digital logic. The FLEX 10K family is an SRAM-LUT-based FPGA that combines fine-grained logic elements with embedded array blocks (EABs) for memory and complex arithmetic functions, occupying a middle position in the programmable logic hierarchy between simple PLDs/CPLDs and modern high-density FPGAs. The EPF10K10TC144-3N belongs to the lowest-density tier of the FLEX 10K family and was widely deployed in the late 1990s and early 2000s for glue-logic, custom peripheral, and bus-interface applications. Key features include a maximum toggle frequency of 80 MHz (per the FLEX 10K family datasheet), PCI Local Bus Specification Revision 2.2 compliance, low standby current typically under 1 mA, flexible in-system programmability via an industry-standard SRAM configuration interface, and a rich selection of fine-grained logic, EABs, and FastTrack interconnect. The 144-LQFP plastic package measures 22 mm x 22 mm with 0.5 mm pitch, providing easy hand-soldering and rework capability for prototyping and low-volume production. Internally, the device is built on a 0.42 µm CMOS SRAM process and uses a hierarchical interconnect structure combining row and column FastTrack channels, four-input LUT-based logic elements, and embedded array blocks (EABs) that can each implement up to 2,048 bits of RAM or a multiplier/ROM function. Configuration data is loaded from an external serial or parallel PROM via the serial configuration (EPCS-like) interface, and the device supports in-system reconfiguration for field updates. The architecture supports 6,144 memory bits (typical) of distributed RAM. Typical applications for the EPF10K10TC144-3N include industrial automation controllers, telecommunications interface bridges, custom peripheral and bus-interface glue logic, low-density signal processing pre-processing, PCI bus interface logic, and legacy embedded designs where the FLEX 10K tool flow (Quartus, MAX+PLUS II) is already deployed. The combination of low power, 5-V tolerance, and PCI compliance makes it well-suited for retro-compatible add-in cards and industrial backplanes. When designing with this device, ensure the configuration PROM and JTAG chain are correctly wired and that decoupling follows the FLEX 10K datasheet's recommended capacitor network. The non-volatile design must use an Altera (or compatible) configuration device because the SRAM-based logic is volatile and re-loads from configuration memory on every power-up. Quartus or MAX+PLUS II software is required for design entry, synthesis, place-and-route, and bitstream generation.

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EPF10K10TC144-4N - 10K Gates FLEX-10K FPGA, 144-LQFP | Intel / Altera
EPF10K10TC144-4N

EPF10K10TC144-4N - 10K Gates FLEX-10K FPGA, 144-LQFP | Intel / Altera

The Intel / Altera EPF10K10TC144-4N is a member of the FLEX-10K family of Field-Programmable Gate Arrays (FPGAs), packaged in a 144-pin LQFP (Plastic Low-profile Quad Flat Pack) and providing 10,000 usable gates. It belongs to the "-4" speed grade and is designated as lead-free by the "N" suffix. The device integrates a 2,048-bit embedded array block (EAB) memory and 576 logic elements across 72 logic array blocks (LABs), with 102 user I/O pins exposed on the 144-LQFP package. What is an FPGA? An FPGA (Field-Programmable Gate Array) is a type of programmable logic device (PLD) that allows engineers to implement custom digital logic circuits by configuring an array of configurable logic blocks (CLBs/LABs), programmable interconnects, and I/O blocks. FPGAs sit in the hierarchy: PLD -> CPLD -> FPGA -> SoC FPGA. The FLEX-10K family, introduced in the mid-1990s, was the industry's first family to embed dedicated SRAM array blocks (EABs) for on-chip memory, pioneering the modern concept of "System-on-a-Programmable-Chip" (SOPC) integration of logic and memory. Key specifications include 6,144 typical gates / 10,000 maximum usable gates, 72 LABs each containing 8 logic elements (LEs) for 576 LEs total, 102 user I/Os, and a 4.75V-5.25V single-supply operating range. The "-4" speed grade offers faster propagation delay than the -3 / -2 grades for time-critical paths, and the device is rated for commercial temperature operation (0C to 70C). It is fabricated on a 0.42 micron CMOS process and supports in-system programmability via the Altera ByteBlaster or BitBlaster configuration interface. Typical applications include legacy industrial control, communication backplane glue logic, telecom interface boards, PCI bus bridges, and ASIC prototyping where 5V tolerant I/O and mid-density logic capacity are required. The 144-LQFP footprint is widely supported on legacy through-hole and surface-mount PCB designs. Engineers migrating from the FLEX-10K family to modern Cyclone or MAX families should note the 5V VCC requirement differs from current 1.2V-3.3V FPGAs. When designing with EPF10K10TC144-4N, observe the JTAG IEEE 1149.1 boundary-scan requirements, decoupling with 0.1 uF ceramic capacitors per VCC pin, and consider the configuration scheme (PS, PPS, AS, or JTAG) needed for the design. The device is supported by Altera legacy MAX+PLUS II and Quartus design software. This page synthesizes distributor pricing, drop-in same-package alternatives from the FLEX-10K family, and practical design notes not consolidated in the original Altera datasheet. Pricing, stock, and specifications are last verified 2026-09-11 from authorized distributors.

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EPF10K10TI144-4 - 10K Gates FLEX 10K FPGA 144-TQFP | Intel
EPF10K10TI144-4

EPF10K10TI144-4 - 10K Gates FLEX 10K FPGA 144-TQFP | Intel

The Intel (formerly Altera) EPF10K10TI144-4 is a member of the FLEX 10K family of field-programmable gate arrays (FPGAs) integrating 10K typical gates, 576 logic elements (LEs) and 72 logic array blocks (LABs) in a 144-pin TQFP package. Built on a 0.42 µm CMOS SRAM-based Look-Up Table (LUT) architecture, the device operates at 5 V and supports in-system programmability via an industry-standard 4-pin JTAG interface (IEEE Std 1149.1). Per the manufacturer datasheet, the FLEX 10K family pioneered the industry's first embedded array block (EAB) for on-chip RAM and ROM, and the EPF10K10TI144-4 is specified at the -4 speed grade, the slowest of the FLEX 10K family for lowest-cost industrial designs. A Field Programmable Gate Array (FPGA) is a semiconductor integrated circuit that can be electrically reconfigured by the customer after manufacture to implement arbitrary digital logic. FPGAs sit at the top of the programmable logic hierarchy (PLD -> CPLD -> FPGA -> SoC FPGA) and offer the highest logic density, the richest I/O capability, and the deepest on-chip memory of any programmable device family. The FLEX 10K family is historically positioned between the older MAX 7000 CPLD family and the later Cyclone series as a glue-logic, bus-interface and low-density control plane solution. Key features of the EPF10K10TI144-4 include 576 logic elements, 10K equivalent gates, 6,144 bits of on-chip RAM distributed across embedded array blocks, 102 maximum user I/O pins, a -4 speed grade with internal core performance up to 125 MHz, and MultiVolt I/O supporting 5.0 V and 3.3 V interfacing on the same die. The TQFP-144 package supports industrial operating temperature range (-40 °C to +85 °C). The device is fully JTAG-compliant and supported by Altera's legacy MAX+PLUS II and Quartus design toolchains. The architecture is built around LABs (each containing 8 LEs), interconnected by FastTrack continuous routing channels, and a row of EABs that provide configurable 2 Kbit memory blocks. The LUT-based LE combines a 4-input combinational function generator, a programmable flip-flop, fast carry chain logic, and cascade chain support, delivering efficient implementation of arithmetic, state machine and pipelined datapath designs in a single device. Typical applications for the EPF10K10TI144-4 include legacy industrial control and glue-logic designs, telecommunications backplane bus interface bridging, peripheral controller integration in computing platforms, prototyping for ASIC replacement, and long-life cycle embedded systems where 5 V tolerance and SRAM-based reprogrammability are required. When designing with this device, note that the FLEX 10K family predates Cyclone/Stratix and lacks dedicated PLLs, transceivers or hard IP cores; clock management and SERDES functions must be implemented in fabric. The 5 V VCCINT requirement mandates a 5 V supply rail and precludes direct deployment in 1.2 V/1.8 V modern systems without level translation. This page synthesizes distributor pricing, package-equivalent drop-in alternatives, JTAG programming considerations and practical design notes not consolidated in any single manufacturer datasheet - providing a faster engineering decision path for sustaining or new FLEX 10K designs.

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EPF10K10TI144-4N - FLEX 10K FPGA 10K Gates 576 Cells 144-LQFP | Intel / Altera
EPF10K10TI144-4N

EPF10K10TI144-4N - FLEX 10K FPGA 10K Gates 576 Cells 144-LQFP | Intel / Altera

The Intel (formerly Altera) EPF10K10TI144-4N is a member of the FLEX 10K family of Field-Programmable Gate Arrays (FPGAs), delivering 10,000 typical gates and 576 logic elements in a 144-pin LQFP (TQFP) surface-mount package with 102 user I/O pins. The device is built on a 0.42 µm CMOS SRAM process and operates from a 5 V supply, with a -4 speed grade targeting approximately 125 MHz internal performance. A Field-Programmable Gate Array (FPGA) is a type of programmable logic device (PLD) that allows designers to configure digital logic blocks and interconnect via a hardware description language or schematic after manufacturing. Within the broader semiconductor taxonomy, the FLEX 10K family sits in the hierarchy PLD -> CPLD/FPGA -> SRAM-based FPGA -> embedded array block (EAB) FPGA, and was Altera's first family to combine look-up-table (LUT) logic with embedded array blocks for on-chip memory and arithmetic functions, enabling System-on-a-Programmable-Chip (SOPC) integration. Key features of the EPF10K10TI144-4N include 72 Logic Array Blocks (LABs), 576 logic cells, 6,144 bits of embedded memory organized into three Embedded Array Blocks (EABs), 102 user I/O pins with individually controllable direction, and six dedicated low-skew global input pins for clock, clear, preset, output-enable, and clock-enable distribution. The 'N' suffix denotes a lead-free / industrial-grade plastic TQFP package, while the 'I' in 'TI144' indicates the industrial temperature range. The architecture pairs fine-grain logic for combinatorial and registered paths with coarse-grain EABs sized to implement RAM, ROM, FIFO, or multiplier functions. Configuration data is loaded from an external serial or parallel PROM into on-chip SRAM latches at every power-up, making the device in-system reconfigurable but volatile. JTAG (IEEE 1149.1) boundary-scan support is included for board-level test access. Typical applications for the EPF10K10TI144-4N include legacy glue-logic and bus-interface bridges in industrial control, telecommunications line cards, prototyping platforms for ASIC verification, and educational or test-and-measurement equipment. Because the part is now mature, it is most often specified for maintenance of long-life installed systems rather than new greenfield designs. When designing with this device, plan around the 5 V I/O tolerance and use a dedicated configuration PROM such as the EPC2 or EPC8 family. Programming requires legacy Altera Quartus II (version 9.1 or earlier) or the MAX+PLUS II toolchain; modern Quartus versions do not target FLEX 10K. Pay close attention to the SameFrame pin-migration rules in the FLEX 10K datasheet so that any future migration to a higher-density device (e.g., EPF10K100) preserves board layout. This page synthesizes distributor pricing across DigiKey, Mouser, Heisener and Octopart, drop-in same-package alternatives from the FLEX 10K family, and practical design notes that are not collected in any single manufacturer datasheet.

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