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EPF10K50GC403-4 - FLEX 10KA FPGA, 50K Gates, 403-Pin CPGA | Altera
EPF10K50GC403-4

EPF10K50GC403-4 - FLEX 10KA FPGA, 50K Gates, 403-Pin CPGA | Altera

The Altera EPF10K50GC403-4 is a member of the FLEX 10KA embedded programmable logic device family, delivering 50,000 typical gates, 2,880 logic elements, and a maximum internal clock frequency of 125 MHz in a 403-pin Ceramic Pin Grid Array (CPGA) package. It operates from a 5 V supply (4.75 V to 5.25 V) using 0.42 µm CMOS SRAM technology and supports configurable I/O standards of 3.3 V or 5 V. The device is specified for a -4 speed grade, providing predictable timing closure for industrial, telecom, and embedded computing applications. An FPGA (Field-Programmable Gate Array) is a semiconductor device built around an array of configurable logic blocks (CLBs), programmable interconnects, and I/O cells that can be re-programmed to implement arbitrary digital logic. Within the broader semiconductor taxonomy, an FPGA is a type of programmable logic device (PLD), itself a sub-category of digital logic ICs and ultimately a member of integrated circuits used for digital computation and signal processing. The FLEX 10KA family was the industry's first family to deliver System-on-a-Programmable-Chip (SOPC) integration, combining embedded array blocks (EABs) for memory and specialized megafunctions with general-purpose logic. Key features include 20 embedded array blocks (EABs) for implementing efficient memory and specialized logic functions, multiVolt I/O supporting 3.3 V and 5 V interfaces, JTAG boundary-scan testing per IEEE 1149.1, and in-system programmability via the built-in SRAM configuration memory. The device's SRAM-based configuration allows unlimited re-programming in the field, making it suitable for prototyping, hardware emulation, and design revisions late in the product lifecycle. It is fully supported by the Altera MAX+PLUS II and Quartus design flows, with comprehensive synthesis, simulation, and timing-analysis tool support. The architecture combines a logic array, embedded array, and fast interconnect network. The embedded array is implemented by EABs that can be configured as ROM, RAM, dual-port RAM, or first-in-first-out (FIFO) buffers, providing megafunctions such as multipliers, microcontrollers, and DSP primitives. The logic array implements general combinatorial and sequential logic. FastTrack interconnect provides predictable, low-skew routing for high-fanout nets and clock distribution. Typical applications include glue logic replacement, custom interface bridging (PCI, ISA, UART, I2C, SPI), telecom line-card controllers, industrial control and automation logic, prototyping for ASIC designs, and embedded DSP co-processing. The 403-pin CPGA package is chosen for applications requiring high pin count and reliable through-hole soldering, including legacy industrial systems, military, and aerospace platforms where ceramic packaging offers superior hermeticity and thermal performance. When designing with this device, ensure that the configuration scheme (EPC, microcontroller, or JTAG) is provisioned in the board design and that the JTAG chain order is documented for boundary-scan testing. For new designs, engineers should evaluate the migration path to the Altera Cyclone series, which offers higher logic density, lower power, and modern package options at significantly lower cost. This page synthesizes distributor availability, drop-in alternatives from the FLEX 10K family, and practical design notes not collected in the original FLEX 10KA datasheet.

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EPF10K50RC240-3 - 50K Flex 10K FPGA, 189 I/O, 240-RQFP | Altera
EPF10K50RC240-3

EPF10K50RC240-3 - 50K Flex 10K FPGA, 189 I/O, 240-RQFP | Altera

The Altera (Intel) EPF10K50RC240-3 is a member of the FLEX 10K family of Field Programmable Gate Arrays (FPGAs) delivering 50,000 usable gates and 2,880 logic cells in a 240-pin RQFP (Plastic Quad Flat Pack with Exposed Pad) package. It features 189 user I/O pins, a maximum internal frequency of 125 MHz, and operates from a 5 V supply. The -3 speed grade positions this part in the mid-tier of the FLEX 10K speed spectrum, balancing cost and performance for industrial and telecom designs. An FPGA (Field Programmable Gate Array) is a semiconductor integrated circuit composed of configurable logic blocks (CLBs), programmable interconnect, and I/O cells that engineers can re-program in the field to implement arbitrary digital logic. FPGAs sit hierarchically between simple PLDs/CPLDs (gates in the tens-to-thousands) and ASICs (application-specific, non-programmable), and the FLEX 10K family was among the first commercially successful families to combine look-up-table (LUT) logic with embedded array blocks (EABs) acting as on-chip SRAM, enabling System-on-a-Programmable-Chip (SOPC) integration. Key features of the EPF10K50RC240-3 include 360 Logic Array Blocks (LABs), 20,480 typical gates, embedded array blocks for memory functions, FastTrack Interconnect continuous routing structure for predictable timing delays, built-in low-skew clock distribution trees, and tri-state emulation support. The 240-pin RQFP package provides ample pin count for parallel buses and multi-protocol glue logic. Technically, the device is fabricated on a 5 V CMOS process and supports JTAG-based boundary-scan testing and in-system programmability via Altera's MAX+PLUS II or Quartus design tools (legacy support). The combination of LUT-based logic with embedded SRAM blocks was a defining architectural innovation that later evolved into the modern Cyclone and MAX series. Typical applications include industrial control glue logic, telecommunications line-card interfaces, legacy test and measurement equipment, and as a programmable I/O expander for microprocessor systems. Engineers still maintain FLEX 10K designs in long-lifecycle industrial products, often using the EPF10K50RC240-3 as a cost-stable logic platform. When designing with this device, note that the FLEX 10K family uses 5 V tolerant I/O but requires a 5 V core supply; confirm the host PCB's voltage rails before replacement. Configuration via JTAG or EPC configuration devices must use legacy Altera programming software — Quartus Prime in compatibility mode or MAX+PLUS II — because newer device families use different bitstream formats. This page synthesizes distributor stock, pricing across 23+ sources, drop-in same-package alternatives, and practical sourcing notes not found in the original datasheet.

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EPF10K50RC240-4 - 50K-Gate FLEX 10K FPGA, 240-RQFP | Intel / Altera
EPF10K50RC240-4

EPF10K50RC240-4 - 50K-Gate FLEX 10K FPGA, 240-RQFP | Intel / Altera

The Intel / Altera EPF10K50RC240-4 is a member of the FLEX 10K family of Field Programmable Gate Arrays (FPGAs) that pioneered the industry's first System-on-a-Programmable-Chip (SOPC) integration through an embedded array block (EAB) architecture. Housed in a 240-pin RQFP (BFQFP with exposed pad) package, this commercial-grade device integrates approximately 50,000 usable gates, 2,880 logic cells, 360 logic array blocks (LABs), and 189 user I/Os fabricated on a 0.42 µm CMOS process and powered from a 5 V supply. A Field Programmable Gate Array (FPGA) is a semiconductor integrated circuit that can be electrically reconfigured by the designer after manufacturing to implement arbitrary digital logic. The FLEX 10K family is positioned hierarchically as: FPGA -> programmable logic device (PLD) -> logic IC -> integrated circuit. FPGAs occupy the high-density end of the programmable logic spectrum, above CPLDs and below fixed-function ASICs, and are the dominant platform for prototyping, low-volume production, and reconfigurable computing. Key features of the EPF10K50RC240-4 include a maximum propagation delay of 0.6 ns (corresponding to roughly 125 MHz internal frequency per the FLEX 10K datasheet family), embedded array blocks (EABs) for efficient RAM/ROM implementation, MultiVolt I/O interface for interfacing across multiple logic standards, PCI pull-up clamping diodes, slew-rate control, and pin-by-pin configurable open-drain output options. Each logic element (LE) consists of a 4-input look-up table, a programmable flipflop, and dedicated carry/cascade paths, while groups of eight LEs form LABs that can implement counters, decoders, or state machines. Typical applications include glue logic and bus interfacing in telecom and industrial control, prototyping glue logic for ASIC/ASSP replacement, PCI bus bridges, mid-density state machines, and embedded control logic. The 5 V core supply combined with MultiVolt I/O compatibility makes it well suited to legacy 5 V system designs and mixed-voltage bridges to 3.3 V peripherals. Operating temperature spans 0 °C to 70 °C (commercial grade). When designing with the EPF10K50RC240-4, engineers should note that FLEX 10K devices are configured using legacy Altera programming tools (MAX+PLUS II or early Quartus), and that this device is now in mature lifecycle with no active new design-in support from Intel. Plan obsolescence mitigation early in the design cycle. This page synthesizes distributor pricing, FLEX 10K family pin-compatible drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet, giving engineers a single reference for legacy FLEX 10K sourcing and replacement decisions.

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EPF10K50RI240-4N - 50K-Gate FLEX 10K FPGA, 189 I/O, 240-RQFP | Intel
EPF10K50RI240-4N

EPF10K50RI240-4N - 50K-Gate FLEX 10K FPGA, 189 I/O, 240-RQFP | Intel

The Intel (formerly Altera) EPF10K50RI240-4N is a member of the FLEX 10K family of Field Programmable Gate Arrays (FPGAs), integrating 50,000 typical gates, 2,880 logic cells, 360 Logic Array Blocks (LABs), and 189 user I/Os in a 240-pin RQFP (RQFP-240) package with exposed pad. It is fabricated on a 0.42 µm CMOS process, supports 5 V core operation, and is speed-grade -4 (slower industrial-grade timing closure for non-timing-critical applications). What is an FPGA? A Field Programmable Gate Array is a reconfigurable semiconductor device whose logic function is defined by user-loaded configuration bitstreams rather than hard-wired mask layers. FPGAs sit at the top of the programmable-logic taxonomy: PLD (programmable logic device) -> CPLD (complex PLD) -> FPGA. The FLEX 10K family pioneered the embedded-array block (EAB) architecture, blending distributed logic with on-chip SRAM blocks for System-on-a-Programmable-Chip (SOPC) integration, allowing each device to host both glue logic and dedicated memory-intensive functions (FIFOs, multipliers, microcontrollers). Key differentiating features of this part include 20,480 typical logic elements, a sustained internal frequency of approximately 125 MHz, 0.6 ns propagation delay, 3.3 V or 5 V MultiVolt I/O support via separate VCCIO rails, PCI pull-up clamping diode, slew-rate control, and pin-by-pin open-drain output options configurable through the Altera MAX+PLUS II / Quartus toolchain. The exposed thermal pad on the 240-RQFP package provides a low-θJA path for dissipating the higher thermal envelope of larger FPGAs. Typical applications for the EPF10K50RI240-4N include telecom interface glue logic, industrial control bridging, legacy ISA/PCI bus peripherals, prototyping bridges between microcontrollers and DSPs, and OEM upgrades of FLEX 10K designs where modern Cyclone or MAX devices cannot be retrofitted without a board respin. Its MultiVolt I/O interface also makes it valuable as a level translator between 5 V microcontrollers and 3.3 V peripherals. When designing with this part, observe the 5 V VCCINT requirement, derate I/O banks independently via VCCIO, and reserve the exposed pad for a continuous ground plane to manage the ~1.5 W typical quiescent power. The device is now classified as legacy/obsolete by Intel, so engineers should plan EOL mitigations early. This page synthesizes distributor pricing as of 2026-09-11, a structured drop-in alternative list, and practical design notes that go beyond the bare datasheet.

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EPF10K50SFC484-3 - 50K FLEX-10KS FPGA 220 I/O 484-BGA | Altera
EPF10K50SFC484-3

EPF10K50SFC484-3 - 50K FLEX-10KS FPGA 220 I/O 484-BGA | Altera

The Altera (Intel Programmable Solutions Group) EPF10K50SFC484-3 is a member of the FLEX-10KS family of SRAM-based Field Programmable Gate Arrays (FPGAs) housed in a 484-ball FineLine BGA (FBGA) package. It integrates approximately 50,000 system gates, 2,880 logic elements (LEs), and 40,960 bits of embedded SRAM distributed across 10 EAB (Embedded Array Block) memory blocks. The device exposes 220 user I/O pins and is fabricated on a 0.42 µm CMOS process operating from a 2.5 V core supply. An FPGA (Field Programmable Gate Array) is a semiconductor device built around an array of configurable logic blocks (CLBs) interconnected by a programmable routing matrix, allowing designers to implement arbitrary digital logic that is re-programmable in-system. FPGAs sit hierarchically under programmable logic devices (PLDs), which in turn belong to the broader category of digital logic ICs and semiconductors. The FLEX-10KS family was one of the first families to embed dedicated SRAM blocks (EABs) alongside general-purpose logic, pioneering the System-on-a-Programmable-Chip (SOPC) concept that allowed soft-core processors and custom peripherals to share a single silicon device. Key features of the EPF10K50SFC484-3 include 360 Logic Array Blocks (LABs), 50,000 typical gates, 0.42 µm process geometry, 2.5 V VCCINT supply, in-system programmable SRAM configuration cells, and JTAG-compliant IEEE 1149.1 boundary-scan test support. The '-3' speed grade denotes the slowest of three commercially available speed grades for this family and is generally used for cost-sensitive non-timing-critical applications. Architecturally, the device combines a Lookup Table (LUT)-based fine-grain logic fabric with 10 EABs that each provide up to 4 Kbits of dual-port SRAM, ideal for FIFO buffers, wide register files, and small cache memories. The programmable interconnect uses continuous FastTrack routing, providing predictable timing suitable for synchronous design at clock rates up to the family maximum (about 66 MHz internal frequency for the -3 speed grade in this family). Typical applications for the EPF10K50SFC484-3 include telecommunications glue logic, industrial control interfaces, prototyping ASICs, custom peripheral expansion in embedded systems, and legacy system upgrades where 5 V-tolerant I/O and 50 K-gate capacity are sufficient. The 484-ball FBGA package provides dense I/O access for board designs that need to break out a large number of signals. A key design consideration is the device's obsolete status - it was discontinued by Altera (now Intel PSG) and is only available through the secondary market. Designers should plan for last-time-buy or migration to newer Cyclone or MAX families. I/O banks support 2.5 V LVTTL/LVCMOS with PCI compatibility, and configuration must be loaded from a serial PROM or via JTAG at every power-up because the SRAM cells are volatile. This page synthesizes distributor inventory, same-brand speed-grade and EAB-count alternatives, and practical design notes not found in the original FLEX-10KS datasheet - enabling engineers to source or substitute the EPF10K50SFC484-3 with confidence.

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EPF10K50SQC208-2 - FLEX 10KS FPGA 50K Gates 208-PQFP | Altera
EPF10K50SQC208-2

EPF10K50SQC208-2 - FLEX 10KS FPGA 50K Gates 208-PQFP | Altera

The Intel (Altera) EPF10K50SQC208-2 is a member of the FLEX 10KS family of Field-Programmable Gate Arrays, delivering 50,000 typical gates, 2,880 logic cells (4,096 flipflops/registers) and 360 logic array blocks (LABs) in a 208-pin Plastic Quad Flat Pack (208-BFQFP/PQFP, 28x28 mm) gull-wing surface-mount package. It supports 147 user I/Os, runs from a 2.375 V to 2.625 V core supply on a 0.22 µm CMOS SRAM process, and is offered in a commercial 0 °C to 70 °C temperature grade with -2 speed grade. The device is built on a reconfigurable SRAM architecture with embedded array blocks (EABs) that allow on-chip implementation of RAM, ROM, FIFO, and multiplier functions, making it suitable for System-on-a-Programmable-Chip (SOPC) designs. A Field-Programmable Gate Array (FPGA) is a type of programmable logic device (PLD) that combines configurable logic blocks, programmable interconnect, and programmable I/O cells on a single semiconductor die. FPGAs sit higher than simple CPLDs in the programmable logic hierarchy because they can host multi-million-gate designs, soft processor cores, and high-throughput parallel datapaths. Within Intel/Altera's portfolio, FLEX 10K was the first family to embed dedicated array blocks (analogous to today's M9K/M20K blocks in modern Cyclone/Arria devices), enabling efficient memory-mapped logic and DSP functions. The FLEX 10KS variant adds enhanced I/O support and improved speed grades versus the original FLEX 10K family. Key features of the EPF10K50SQC208-2 include 50K typical gates / up to 100K maximum system gates, 40,960 bits of embedded memory, 147 user I/Os at LVTTL/LVCMOS-compatible levels, in-system programmability via the IEEE 1149.1 JTAG interface, and boundary-scan testability. The device supports multi-voltage I/O standards including 5.0 V, 3.3 V, and 2.5 V interfacing through banked VCCIO rails. Per-block fast-path interconnect delivers typical internal frequencies in the 100-200 MHz range, with internal carry chains optimized for arithmetic operations. Typical applications include digital signal processing glue logic, telecom backplane interface controllers, industrial machine control and instrumentation, image and video pipeline preprocessing, and embedded system prototyping for ASIC emulation. The FLEX 10KS family was widely adopted in late-1990s and early-2000s designs, and EPF10K50SQC208-2 remains in service today primarily as a long-life replacement and spare-parts component in legacy industrial and aerospace equipment. When designing in the EPF10K50SQC208-2, engineers must consider the 5.0 V tolerant I/O mixed-voltage constraints, the JTAG configuration interface, and the use of the legacy MAX+PLUS II or Quartus design software (the FLEX 10K device files are still supported in Quartus for backward compatibility). Note that this part is no longer recommended for new designs; modern replacements from Intel (Cyclone IV/V or MAX 10) offer lower power and higher density at a lower cost. Alternative FLEX 10K and FLEX 10KS family variants in the same 208-PQFP footprint exist for design migration, and the pin-compatible EPF10K50EQC208-3 in the same 208-BFQFP package enables drop-in upgrade to higher performance with the same board layout. This page synthesizes distributor pricing, family-level drop-in alternatives, and legacy design notes not found in the original datasheet.

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EPF10K50SQC208-3 - FLEX 10K 50K Gates FPGA | Intel | Altera
EPF10K50SQC208-3

EPF10K50SQC208-3 - FLEX 10K 50K Gates FPGA | Intel | Altera

The Intel (Altera) EPF10K50SQC208-3 is a member of the FLEX 10K family of Field-Programmable Gate Arrays (FPGAs) offering 50,000 typical gates, 2,880 logic cells, and 40,960 bits of embedded SRAM in a 208-pin PowerQuad Flat Pack (PQFP/BFQFP) package. The "-3" speed grade delivers an internal frequency up to 166.67 MHz using 0.22 µm CMOS process technology. The device features 147 user I/Os, 360 Logic Array Blocks (LABs), and supports a 2.5 V core supply voltage. This combination of density, speed, and packaging makes it well-suited for high-volume digital design integration. A Field-Programmable Gate Array (FPGA) is a programmable logic device (PLD) that combines the density of gate arrays with the design flexibility of in-system programmability. FPGAs belong to the broader hierarchy of programmable logic devices (PLDs), sitting above simple PLDs (SPLDs) and complex PLDs (CPLDs) in capacity and below structured ASICs in non-recurring engineering cost. The FLEX 10K series is historically significant as one of the first devices to embed array blocks (EABs) alongside general-purpose logic, enabling System-on-a-Programmable-Chip (SOPC) integration of megafunctions, FIFOs, and specialized memory in a single silicon die. Key features of the EPF10K50SQC208-3 include a propagation delay of 0.6 ns per gate, 274 user I/Os (per third-party BGA-package variant specifications), a commercial operating temperature range of 0 °C to 70 °C, and gull-wing surface-mount terminals. The device implements configurable logic via SRAM-based configuration cells, allowing infinite reprogrammability during development and in-field updates. Its 208-pin PQFP footprint provides mechanical compatibility with established PCB assembly lines and supports moderate-density designs that do not require the larger FineLine BGA packages of the same family. Architecturally, the FLEX 10K device integrates an Embedded Array Block (EAB) system that delivers up to 2,048 bits per EAB, enabling efficient implementation of RAM, ROM, and specialized logic functions such as multipliers and DSP blocks. The combination of LABs for general logic and EABs for memory-heavy functions allows designers to balance logic density against embedded memory, a differentiator compared with pure-logic FPGAs of the same era. The device is configured via the Altera MAX+PLUS II or Quartus design flow, both of which support schematic, VHDL, and Verilog entry. Typical applications include industrial automation control logic, telecom interface bridging, custom peripheral glue logic, prototyping for ASIC designs, and legacy digital systems in manufacturing and test equipment. The wide commercial temperature range and PQFP packaging make it accessible for standard SMT assembly without requiring advanced BGA rework processes. The EPF10K50SQC208-3 is also widely used for education, training, and reference designs in universities, since it remains a popular teaching target for older Quartus versions. Designers should note that the FLEX 10K family is part of an older-generation architecture; for new designs, the Altera Cyclone or MAX 10 families are recommended for active product lifecycle support. When using EPF10K50SQC208-3, ensure adequate decoupling, follow Altera's configuration guidelines (typically 6-pin passive serial or ByteBlaster download cable), and validate timing closure with the appropriate Quartus timing model. Finally, note that the device uses 2.5 V core but typically interfaces with 3.3 V peripherals via bank voltage reference. This page consolidates real-time distributor pricing, FLEX 10K family drop-in alternatives sharing the same 208-pin PQFP footprint, and practical design guidance not always found in the original Altera datasheet—useful for engineers sustaining legacy systems or sourcing through the secondary market.

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EPF10K50SQC240-1 - 50K Gates, 189 I/O FLEX-10KS FPGA | Intel
EPF10K50SQC240-1

EPF10K50SQC240-1 - 50K Gates, 189 I/O FLEX-10KS FPGA | Intel

The Intel (Altera) EPF10K50SQC240-1 is a 50K-gate member of the FLEX 10KS family of SRAM-look-up-table (LUT) based Field Programmable Gate Arrays (FPGAs), delivering 2880 logic cells, 360 Logic Array Blocks, 189 user I/O pins, and 40,960 bits of embedded SRAM in a 240-pin Power QFP (PQFP/BFQFP) package at a 250 MHz internal operating frequency. A Field Programmable Gate Array (FPGA) is a semiconductor device built around a matrix of configurable logic blocks (CLBs/LABs), programmable interconnect, and I/O cells that an engineer can re-program in the field to implement arbitrary digital logic. FPGAs occupy the hardware-reconfigurable tier of the broader programmable logic family hierarchy: PLD → CPLD → FPGA → System-on-Chip FPGA. The FLEX 10KS family specifically introduced embedded array blocks (EABs) for on-chip memory and DSP functions, marking Intel/Altera's transition from pure glue logic into System-on-a-Programmable-Chip (SOPC) integration. Key differentiating features of the EPF10K50SQC240-1 include the 240-pin PQFP footprint with exposed gull-wing leads for socketed or surface-mount assembly, a 2.5 V core supply tolerance of ±5% (2.375 V to 2.625 V), in-system programmability through the IEEE 1149.1 JTAG interface, and 5V-tolerant I/O on selected banks enabling glueless interfacing to legacy 5V logic. The 'SQC' suffix denotes the standard commercial temperature grade (0 °C to +70 °C) and the '240-1' suffix encodes the speed grade and 240-pin PQFP package. Architecturally the EPF10K50SQC240-1 uses a 0.22 μm CMOS SRAM process with four-input look-up tables feeding 360 LABs, twelve EABs providing a total of 40,960 bits of dual-port RAM, and a FastTrack continuous-routing interconnect. This combination gives designers predictable timing for state machines, datapath glue, bus interfaces, and small embedded FIFOs without requiring an external configuration PROM when using a microprocessor or JTAG loader. Typical applications include telecommunications line-card glue logic, industrial control backplanes, PCI bridge interfaces, mid-density ASIC prototyping, and legacy long-life-cycle systems where the FLEX 10KS family has been qualified. When designing with this device, allow generous ground and VCCIO plane coverage on the PCB to keep the simultaneous-switching-noise (SSN) within the I/O bank's 5 V tolerance, and ensure JTAG chain integrity by buffering TMS/TCK near the connector.

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EPF10K50SQC240-1N - FLEX 10KS FPGA 50K Gates 240-PQFP | Intel
EPF10K50SQC240-1N

EPF10K50SQC240-1N - FLEX 10KS FPGA 50K Gates 240-PQFP | Intel

The Intel (formerly Altera) EPF10K50SQC240-1N is a FLEX 10KS family Field Programmable Gate Array (FPGA) delivering 50,000 typical gates (40,960 system gates) with 2,880 logic elements packaged in a 240-pin Plastic Quad Flat Pack (PQFP/BFQFP) measuring 32x32 mm. The device operates from a 2.375V to 2.625V core supply, runs up to 250 MHz internal frequency, and exposes 189 user I/Os for external interfacing. An FPGA (Field Programmable Gate Array) is a semiconductor integrated circuit built from an array of configurable logic blocks (CLBs), embedded memory, and programmable interconnect that designers program after manufacture. FPGAs sit in the broader hierarchy of programmable logic devices (PLDs), above simple CPLDs, and below custom ASICs in terms of integration density and NRE cost. The FLEX 10KS family from Altera pioneered embedded System-on-a-Programmable-Chip (SOPC) integration by combining a logic array fabric with dedicated Embedded Array Blocks (EABs) used as RAM, ROM, or multiplier functions. Key features include 360 Logic Array Blocks (LABs), built-in Joint Test Action Group (JTAG) boundary-scan test circuitry compliant with IEEE Std. 1149.1-1990, and PCI Local Bus Specification Revision 2.2 compliance for both 3.3V and 5.0V operation at 33 MHz or 66 MHz on -1 speed grade devices. The 0.22 micrometer CMOS process delivers propagation delays as low as 0.6 ns in faster speed grades, while integrated clock management and PLL blocks simplify timing closure. Architecturally, each LAB contains 10 Logic Elements (LEs), and each LE contains a 4-input look-up table, a programmable register, and a carry chain for arithmetic. EABs provide 2 Kbits of dual-port RAM each, and the same fabric can be configured as synchronous SRAM or read-only memory. The device supports in-system programmability via the serial configuration EPROM interface and ByteBlaster download cables. Typical applications include telecommunications line cards, industrial motor control, PCI interface glue logic, glue logic between legacy microprocessors and peripherals, and digital signal processing front-ends. The wide 189-I/O count suits bus-intensive designs like 32-bit processor bridges and peripheral controllers. Designers often select this part for legacy system maintenance where the FLEX 10K silicon is already qualified. A key design consideration is configuration storage: FPGAs require an external configuration EPROM (such as an EPC2 or EPC8) or a microcontroller to load the bitstream at power-up. The -1N suffix indicates commercial temperature grade (0C to 70C) and the slower -1 speed grade; engineers needing higher performance should evaluate -2 or -3 speed grades in the same footprint. This page synthesizes distributor pricing, drop-in alternatives from the same FLEX 10K family, and practical design notes that complement the manufacturer datasheet.

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EPF10K50SQC240-2N - 50K Gate FLEX 10KE FPGA, 240-PQFP | Intel
EPF10K50SQC240-2N

EPF10K50SQC240-2N - 50K Gate FLEX 10KE FPGA, 240-PQFP | Intel

The Intel / Altera EPF10K50SQC240-2N is a FLEX 10KE family Field Programmable Gate Array (FPGA) delivering 50,000 system gates and 2,880 logic cells in a 240-pin Plastic Quad Flat Pack (PQFP) package. Built on a 0.22 µm CMOS process with a 2.5 V core supply, it operates up to 200 MHz internal frequency and is rated for commercial 0 °C to 70 °C ambient temperature. The device features 189 user I/Os and 360 Logic Array Blocks (LABs) with embedded array blocks (EABs) for on-chip SRAM implementation. What is a FPGA? A Field-Programmable Gate Array is a semiconductor device built around a matrix of configurable logic blocks (CLBs / LABs) connected by programmable interconnect. FPGAs occupy a tier above simple PLDs and CPLDs in the programmable logic hierarchy because they integrate RAM blocks, multipliers (in newer families) and dedicated I/O, allowing entire digital subsystems to be implemented in a single chip. The FLEX 10KE family from Altera (now Intel PSG) is positioned as a cost-optimized mid-density family for glue logic, bus bridging, and DSP co-processing. Key features include 40,960 typical gate count, 2,880 logic elements, dedicated dual-port RAM via EABs, multi-voltage I/O supporting 2.5 V / 3.3 V / 5.0 V mixed-signal interfacing, in-system programmability via the IEEE 1149.1 JTAG interface, and SameFrame pin-out migration allowing density migration within the same footprint. The 240-pin PQFP package measures 32.0 mm × 32.0 mm × 3.4 mm with 0.5 mm pitch and gull-wing leads. The FLEX 10KE architecture combines a fine-grained Logic Element (LE) fabric with coarse-grained EABs, each EAB providing up to 2,048 bits of RAM that Altera software can automatically combine to match designer memory requirements. MultiVolt I/O pins allow interfacing with 5.0 V, 3.3 V, and 2.5 V devices without external level shifters. Typical applications include PCI bus interface bridges, custom DSP co-processors, industrial control glue logic, telecommunications line-card controllers, and legacy system prototyping. The wide operating temperature range and SameFrame footprint migration also make the family suitable for long-lifecycle industrial designs. When designing with this part, ensure the Quartus II or MAX+PLUS II toolchain (depending on design age) supports the FLEX 10KE device family - legacy parts may require older Altera software versions. Decoupling: place 0.1 µF ceramic capacitors within 5 mm of every VCCINT / VCCIO pin pair. JTAG chain: configure via ByteBlaster or USB-Blaster and observe TCK pull-down requirements. This page synthesizes distributor pricing, drop-in FLEX 10KE same-package alternatives, and practical JTAG/Quartus design notes not found in the original Altera FLEX 10KE Embedded Programmable Logic Devices Data Sheet.

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EPF10K50SQC240-3N - FLEX 10KE 50K Gates FPGA, 240-PQFP | Altera / Intel
EPF10K50SQC240-3N

EPF10K50SQC240-3N - FLEX 10KE 50K Gates FPGA, 240-PQFP | Altera / Intel

The Intel (formerly Altera) EPF10K50SQC240-3N is a member of the FLEX 10KE family of SRAM-based Field Programmable Gate Arrays (FPGAs), delivering 50,000 typical gates (40,960 system gates), 2,880 logic elements, 360 Logic Array Blocks (LABs), and 189 user I/Os in a 240-pin Power Quad Flat Pack (PQFP) package. The "-3N" speed grade corresponds to a faster Fmax of 166.67 MHz, while the trailing "N" denotes a lead-free / Pb-free industrial finish. The die is built on a 0.22 µm CMOS process with a 2.5 V core supply, supporting 5.0 V tolerant I/O through the FLEX 10KE multi-voltage interface. Background: An FPGA (Field-Programmable Gate Array) is a programmable logic device that combines the integration density of a gate array with the design flexibility of user-defined interconnect. FPGAs sit in the broader taxonomy of programmable logic devices (PLDs), which include SPLDs, CPLDs, and FPGAs. The FLEX 10KE family pioneered embedded array blocks (EABs) for System-on-a-Programmable-Chip (SOPC) integration, blending dedicated SRAM blocks with general-purpose logic for memory-intensive glue logic, datapath, and bus-interface applications. The EPF10K50SQC240-3N occupies the mid-density position of that family. Key features include 40,960 system gates, 2,880 logic cells, 12 embedded array blocks (EABs) providing up to 24 Kbits of on-chip SRAM, 360 LABs of structured logic, 189 user I/Os, and a 0.6000 ns pin-to-pin propagation delay. IEEE Std. 1149.1 JTAG boundary-scan is supported, with built-in test circuitry adding up to 31,250 gates of dedicated test logic. MultiVolt I/O compatibility lets the device interface with 2.5 V, 3.3 V, and 5.0 V logic rails from a single 2.5 V VCCINT supply. The FLEX 10KE architecture uses a four-input look-up table (LUT) with a fast carry chain, providing predictable 0.6 ns combinational delay and dedicated high-speed interconnect for arithmetic and bus functions. The 12 EABs each implement 2 Kbits of dual-port RAM, ROM, or product-term logic, enabling efficient FIFO, CAM, and datapath designs without external memory. Typical applications include glue-logic integration between microprocessors and peripherals, PCI bus interface controllers, high-speed datapath and FIFO buffers, telecom backplane glue logic, industrial control state machines, and legacy 5 V-tolerant bridges between modern 3.3 V controllers and 5 V peripherals. Designers migrating from discrete TTL/CMOS glue can consolidate dozens of packages into one FLEX 10KE device. When designing with the EPF10K50SQC240-3N, ensure proper decoupling on VCCINT and VCCIO pins, observe JTAG chain integrity for in-system programming, and verify timing closure with the Quartus II design tool that targets the FLEX 10KE family. The -3 speed grade is preferred when the design is timing-critical; the -1 or -2 grades can be used when Fmax is not the limiting factor. This page synthesizes distributor pricing, SameFrame pin-compatible migration paths, and FLEX 10KE design notes not consolidated in the original Altera datasheet, enabling faster part selection, sourcing, and PCB layout decisions for legacy FPGA retrofits.

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EPF10K50STC144-2 - 50K Gates FLEX-10KS FPGA, 102 I/O, 144-TQFP | Intel
EPF10K50STC144-2

EPF10K50STC144-2 - 50K Gates FLEX-10KS FPGA, 102 I/O, 144-TQFP | Intel

The Intel (formerly Altera) EPF10K50STC144-2 is a member of the FLEX-10KS family of Field Programmable Gate Arrays, delivering 50,000 typical gate density with 2,880 logic elements and 40,960 bits of embedded SRAM in a 144-pin TQFP package. Per the manufacturer datasheet, the device provides 102 user I/O pins, 360 Logic Array Blocks (LABs), and a maximum internal frequency of 66.67 MHz with 0.6 ns propagation delay. A Field Programmable Gate Array (FPGA) is a type of Programmable Logic Device (PLD) that combines configurable logic blocks, programmable interconnect, and I/O cells on a single semiconductor die. The FLEX-10KS architecture sits within the broader hierarchy: PLD -> FPGA -> Complex Programmable Logic Device (CPLD) hybrid family. The FLEX-10KS is notable as one of the first System-on-a-Programmable-Chip (SOPC) capable families, integrating an embedded array block for RAM and ROM functions alongside the logic array. Key features include in-system programmability via SRAM configuration cells (allowing reconfiguration without removing the device), support for multiple I/O standards (LVTTL, LVCMOS, PCI), and an internal frequency specification of 66.67 MHz. The device operates on a 5.0 V core supply and supports JTAG-based boundary-scan testing per IEEE 1149.1. The package is a 144-pin Low-profile Fine-pitch Quad Flat Pack (LQFP/TQFP), surface mount, gull-wing lead form. The FLEX-10KS architecture uses a CMOS logic fabric with continuous interconnect routing channels between LABs. Each LAB contains ten Logic Elements (LEs), each comprising a 4-input look-up table, a programmable register, and a dedicated carry chain. The embedded array blocks (EABs) provide 2 Kbit of dual-port RAM per block and can be cascaded to form larger memory structures, which was a distinctive feature at the time of introduction. Typical applications include glue logic replacement, custom interface bridging (e.g., PCI to legacy bus), industrial control systems, telecommunications line cards, and prototype ASIC emulation. The 102 I/O count is well suited to designs requiring moderate external connectivity, such as multi-port memory controllers or parallel data acquisition systems. When designing with the EPF10K50STC144-2, engineers should pay attention to configuration mode selection (Passive Serial, Passive Parallel Synchronous, Passive Parallel Asynchronous, or JTAG) and ensure the nCONFIG and nSTATUS pins have proper pull-up resistors during power-up sequencing. The SRAM-based configuration means the device must be reconfigured on every power-up unless an external configuration memory is used. This page synthesizes distributor pricing, drop-in compatible FLEX-10KS variants, and practical design notes not found in the manufacturer datasheet alone.

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EPF10K50STC144-3 - FLEX 10KS 50K-Gate FPGA 2880 Cells | Altera
EPF10K50STC144-3

EPF10K50STC144-3 - FLEX 10KS 50K-Gate FPGA 2880 Cells | Altera

The Altera EPF10K50STC144-3 is a member of the FLEX 10KS series of high-density SRAM-based Field-Programmable Gate Arrays (FPGAs), providing 50,000 typical gates, 2,880 logic elements, and 40,960 RAM bits in a 144-pin TQFP commercial-grade package. According to the manufacturer product description, the device integrates 102 user I/Os, operates from a 2.5V core supply with 5.0V-tolerant I/O, and supports an internal operating frequency up to 166.67 MHz. The trailing -3 speed grade denotes a faster propagation delay bin than the -2 or -1 grades of the same family. 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 10KS architecture is a hierarchical SRAM-based PLD that combines fine-grain logic elements (LEs) grouped into Logic Array Blocks (LABs) with embedded array blocks (EABs) for memory functions. Within the broader taxonomy, the FLEX 10KS sits below modern Cyclone and Stratix families but above simple CPLDs, targeting glue-logic, bus-bridging, and medium-density state-machine designs. Key features include 360 LABs, 102 maximum user I/Os, JTAG IEEE Std. 1149.1 boundary-scan support built-in, and on-chip configuration memory. The 144-LQFP (also referenced as LFQFP / TQFP) package is a plastic gull-wing surface-mount form factor rated for commercial operating temperature. The SRAM-based configuration is volatile, requiring an external configuration device (EPC) at power-up. A built-in Joint Test Action Group (JTAG) boundary-scan test circuit is compliant with IEEE Std. 1149.1-1990 and consumes no additional device logic. The EPF10K50STC144-3 -3 speed grade offers tighter propagation delay than the -2 grade of the same family, making it preferred for designs that approach the upper frequency ceiling of 166.67 MHz. The architecture is implemented in a 0.22 um CMOS process, and the device is intended for commercial (0C to 70C) operating environments. Typical applications include telecommunications interface cards, industrial control and bridging logic, mid-density bus controllers, and legacy system upgrades. Design considerations for this device include mandatory configuration ROM selection (EPC1/EPC2 family), careful power-supply sequencing of 2.5V core and 5.0V I/O rails, and I/O bank planning against the available 102 user pins. Note: the FLEX 10K family is mature and was succeeded by ACEX 1K, Cyclone, and MAX families in the Altera (now Intel PSG) roadmap. This page synthesizes distributor pricing, drop-in alternatives, pinout references, and practical design notes for the EPF10K50STC144-3 that are not found in a single manufacturer datasheet.

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EPF10K50VBC356-1N - FLEX 10K 50K Gates 356-BGA FPGA | Altera
EPF10K50VBC356-1N

EPF10K50VBC356-1N - FLEX 10K 50K Gates 356-BGA FPGA | Altera

The Altera (Intel) EPF10K50VBC356-1N is a member of the FLEX 10K family of FPGAs featuring 50,000 gates, 2,880 logic cells, 360 LABs, and 274 user I/Os, fabricated on a 0.42 µm CMOS process and housed in a 356-pin LBGA (35x35 mm) package. It is rated for commercial operating temperature (0°C to 70°C) with a 3.3 V core supply (3.0 V to 3.6 V) and supports an internal frequency of up to 66.67 MHz with a propagation delay of approximately 0.6 ns. A Field-Programmable Gate Array (FPGA) is a semiconductor device built around an array of configurable logic blocks (CLBs), programmable interconnects, and embedded memory blocks that can be reconfigured by the designer after manufacturing. Within the power-management and digital-logic hierarchy, FPGAs sit alongside microcontrollers and DSPs as general-purpose programmable compute elements, but offer far higher parallelism and I/O counts. The FLEX 10K series was the industry's first family to integrate embedded array blocks (EABs) for on-chip megafunctions such as efficient memory, multipliers, and specialized logic functions, providing System-on-a-Programmable-Chip (SOPC) integration. Key features of the EPF10K50VBC356-1N include 360 Logic Array Blocks (LABs), 274 user I/Os, embedded array blocks for memory and DSP megafunctions, JTAG-based in-system programmability via the IEEE 1149.1 boundary-scan interface, and multi-voltage I/O support. The device is offered as the -1 speed grade, which represents the slowest (most conservative timing) of the FLEX 10K speed bins. The architecture combines a fine-grained logic fabric for glue logic and state machines with coarse-grained embedded array blocks (EABs) used to implement RAM, ROM, and arithmetic megafunctions. The 0.42 µm process and 3.3 V core supply were state-of-the-art when the family launched in the mid-1990s, and the 356-pin LBGA package provides the I/O density required for glue-logic, bus-interface, and co-processor applications of that era. Typical applications include industrial control logic, telecom line-card glue logic, legacy PCI/ISA bus bridges, prototyping platforms, and educational/embedded systems. The large 274-I/O count makes it well-suited to bus-intensive designs and to designs that must aggregate many peripheral interfaces. When designing with the EPF10K50VBC356-1N, engineers should note that this device is in mature lifecycle status with limited new-stock availability through authorized distributors; long-term production designs should plan for last-time-buy arrangements or consider migration to a Cyclone-series equivalent via Altera's legacy-device migration guide. PCB layout must follow JEDEC BGA guidelines, with microvia or via-in-pad recommended for the 1.27 mm pitch ball array. This page synthesizes distributor pricing, drop-in FLEX 10K family alternatives, lifecycle observations, and practical design notes not consolidated in the manufacturer datasheet alone.

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EPF10K50VBC356-2 - FLEX 10K FPGA 50K Gates 356-BGA | Intel
EPF10K50VBC356-2

EPF10K50VBC356-2 - FLEX 10K FPGA 50K Gates 356-BGA | Intel

The Intel (formerly Altera) EPF10K50VBC356-2 is a member of the FLEX 10K family of Field Programmable Gate Arrays (FPGAs), delivering 50,000 typical gates, 2,880 logic cells and 360 Logic Array Blocks (LABs) in a 356-pin LBGA package. Operating from a 3.3 V core supply with up to 274 user I/Os, the device is fabricated on a 0.42 µm CMOS process and supports internal frequencies up to 125 MHz. An FPGA (Field Programmable Gate Array) is a programmable logic device that combines the high integration density of a gate array with the design flexibility of in-system programmability. FPGAs sit within the broader programmable logic hierarchy (PLA -> PAL -> CPLD -> FPGA -> SoC FPGA) and are widely used to implement glue logic, high-speed datapaths, bus bridges and ASIC prototyping. The FLEX 10K family was the industry's first family to embed an array of RAM blocks alongside the logic fabric, enabling System-on-a-Programmable-Chip (SOPC) integration. Key features of the EPF10K50VBC356-2 include 20,480 typical flip-flops, 0.6 ns propagation delay through the Look-Up Table (LUT) and I/O blocks, CMOS logic family compatibility, 66.67 MHz internal frequency, and an operating temperature range of 0 °C to +70 °C for the commercial grade (-2 speed grade). The 356-pin LBGA (Low-profile Ball Grid Array) package provides high signal density and is suitable for SMT assembly on multi-layer boards. Architecturally, the device pairs a Logic Array of LABs with an Embedded Array Block (EAB) that provides dedicated dual-port RAM of up to 2048 bits per EAB. The I/O structure supports 5 V tolerant inputs and PCI-compliant operation, while in-system programmability via the Serial Passive (PS) configuration scheme allows rapid design iteration. The -2 speed grade places this EPF10K50V among the slower FLEX 10K speed bins, optimized for power-sensitive designs. Typical applications for the EPF10K50VBC356-2 include telecommunications line-card glue logic, industrial control bus bridging, ASIC prototyping, video and image processing front-ends, and legacy system replacements in equipment originally designed in the late 1990s. With its 274 user I/Os, the part is particularly attractive in designs that must aggregate multiple narrow buses into wider datapaths. When designing with this part, verify that your design tools (Quartus II or MAX+PLUS II) still target the FLEX 10K family and that the chosen power-sequencing scheme respects the device's 3.3 V core and I/O supply rails. The EPF10K50V family is now in NRND/EOL status on the Altera/Intel Product Discontinuance notice; for new designs, consider Cyclone IV or Cyclone V equivalents, and plan for last-time-buy if replacing existing stock.

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EPF10K50VBC356-2N - FLEX 10K 50K-Gate FPGA | Intel | 356-BGA
EPF10K50VBC356-2N

EPF10K50VBC356-2N - FLEX 10K 50K-Gate FPGA | Intel | 356-BGA

The Intel (Altera) EPF10K50VBC356-2N is a member of the FLEX 10K family of embedded programmable logic devices, delivering 50,000 typical gates, 2,880 logic cells, and 274 user I/Os in a 356-ball LBGA package with 0.42 µm CMOS process technology and 3.3 V core supply. The -2N speed grade corresponds to a -2 performance tier and is rated for commercial operating temperature (0 °C to 70 °C per the datasheet header; Jotrin lists 0–85 °C for the broader FLEX 10K commercial variant). According to the verified web data, internal frequency is rated at 66.67 MHz with 0.6 ns propagation delay, fabricated on 0.42 µm CMOS at 3.3 V. A FLEX 10K device is a class of programmable logic device (PLD) — a digital integrated circuit whose logic function and interconnect are defined after manufacturing by the end user. FPGAs sit in the broader hierarchy of programmable logic: PLD → CPLD → FPGA → System-on-Programmable-Chip (SOPC). The FLEX 10K family was notable for embedding an array block alongside logic elements, an early step toward modern heterogeneous FPGA fabrics that combine dedicated multipliers, block RAM, and processor cores. This positions the EPF10K50VBC356-2N as an SOPC-class device for gate-array density at relatively low power. Key features include 50,000 typical gates, 2,880 logic cells, 20,480 typical bits of memory, 274 user I/Os, and 356-ball LBGA packaging. The device supports in-system programmability via SRAM configuration, allowing reconfigurable logic and rapid prototyping. It is built on a CMOS process with 3.3 V supply, making it suitable for mixed 5 V/3.3 V systems when paired with proper I/O buffering. Typical applications include industrial control logic, glue logic replacement, custom bus interfaces, prototyping platforms, and embedded control where a moderate gate count is sufficient. The 356-BGA package and 0.42 µm process place this part in legacy designs that are still maintained in long-life-cycle systems such as factory automation controllers and telecom infrastructure. When designing with this part, ensure your PCB layout accommodates the 1.27 mm BGA pitch and that decoupling capacitors are placed close to all supply balls. Note that FLEX 10K devices are largely NRND/EOL — verify current lifecycle status before new designs and plan obsolescence mitigation. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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EPF10K50VBC356-3 - FLEX 10K FPGA, 50K Gates, 356-BGA | Altera
EPF10K50VBC356-3

EPF10K50VBC356-3 - FLEX 10K FPGA, 50K Gates, 356-BGA | Altera

The Altera (Intel) EPF10K50VBC356-3 is a member of the FLEX 10K family of Field Programmable Gate Arrays (FPGAs) delivering approximately 50,000 typical gates, 20,480 logic elements (in the broader device family), 360 Logic Array Blocks (LABs), and 274 user I/Os, all housed in a 356-ball LBGA (BGA-356) package. It is a commercial-grade, SRAM-based programmable logic device offering embedded array blocks for true System-on-a-Programmable-Chip (SOPC) integration with up to 2,880 Kbits of embedded RAM. An FPGA (Field Programmable Gate Array) is a class of programmable logic device that combines the high integration of a gate array with the design flexibility of in-system programmability. Within the programmable logic hierarchy, FPGAs sit above CPLDs and below fixed-function ASICs: a CPLD is suited to glue-logic and small state machines, while an FPGA targets high-density datapath, DSP, and bus-interface functions. The FLEX 10K family specifically pioneered the embedded array block architecture that merged look-up-table logic with dedicated memory, allowing the designer to implement RAM, ROM, and FIFO functions without consuming general-purpose logic. Key differentiating features include 274 user I/Os (a high pin count for a 356-ball BGA device), 360 LABs each containing 8 Logic Elements, embedded array blocks (EABs) for memory-intensive functions, an internal performance up to 66.67 MHz in the -3 speed grade, and in-system programmability through the IEEE 1149.1 JTAG interface. The device supports multi-volt I/O operation including 5.0V, 3.3V, and 2.5V signaling, enabling bridging between legacy and modern logic families without external level shifters. The architecture is built on a 0.42 µm CMOS SRAM process with 5 layers of metal interconnect. Each LAB contains 8 LEs, and each LE includes a 4-input look-up table, a programmable register, and dedicated carry and cascade chains for high-speed arithmetic. The EAB provides 2 Kbits of dual-port RAM that can be configured as RAM, ROM, or FIFO, delivering the embedded memory density that distinguishes FLEX 10K from pure-logic FPGAs of its era. Typical applications include high-volume glue-logic replacement, custom peripheral controllers for embedded systems, industrial bus-interface bridges (PCI, VME), telecommunications backplane glue, and legacy system repair where the original part is now obsolete. The high I/O count and embedded RAM make it well-suited for datacom and telecom infrastructure that was designed in the late 1990s and is still in production service. When designing with this device, note that the -3 speed grade is the mid-tier offering; a -4 grade variant exists for higher performance applications. Ensure your JTAG chain and configuration PROM are properly designed, since FLEX 10K is configured from external serial EPROM at power-up. The 356-ball BGA requires careful PCB layout with controlled-impedance traces and a minimum of 4-layer stack-up to maintain signal integrity on the high-pin-count package. This page synthesizes distributor pricing, drop-in alternatives from the Site MPN list, and practical design notes not found in the original datasheet, providing engineers with a single reference for sourcing and designing with the EPF10K50VBC356-3.

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EPF10K50VBC356-3N - 50K Gates FLEX 10K FPGA, 356-BGA | Altera
EPF10K50VBC356-3N

EPF10K50VBC356-3N - 50K Gates FLEX 10K FPGA, 356-BGA | Altera

The Altera (Intel) EPF10K50VBC356-3N is a member of the FLEX 10K family of SRAM-based Field Programmable Gate Arrays (FPGAs), delivering 50,000 typical gates, 2,880 logic cells, and 274 user I/Os in a 356-pin BGA package. Manufactured on a 0.42 µm CMOS process, it supports a core supply of 3.3 V and operates over the commercial 0 °C to 70 °C temperature range with an internal performance frequency of up to 125 MHz at speed grade -3. An FPGA (Field Programmable Gate Array) is a programmable logic device that integrates configurable logic blocks (CLBs), embedded memory, and programmable interconnect into a single semiconductor die. Within the broader semiconductor taxonomy, FPGAs sit alongside CPLDs (Complex Programmable Logic Devices) and ASICs (Application-Specific Integrated Circuits) as a family of programmable logic devices (PLDs). The FLEX 10K family pioneered System-on-a-Programmable-Chip (SOPC) integration by embedding array blocks (EABs) for on-chip RAM and ROM alongside general-purpose logic, enabling designs that previously required separate glue logic, memory, and interconnect. Key features of the EPF10K50VBC356-3N include 360 Logic Array Blocks (LABs), 274 user I/O pins, propagation delay of approximately 0.6 ns, and 5 V-tolerant I/O on the 3.3 V core supply thanks to the FLEX 10K multi-voltage interface. The 356-BGA package provides high pin density for complex glue-logic, bus-bridging, and parallel I/O applications. A JTAG-compliant boundary-scan test interface (IEEE Std 1149.1) is provided for in-system configuration and board-level testing. Typical applications for the EPF10K50VBC356-3N span industrial automation controllers, telecommunications line cards, legacy system glue logic, and prototyping platforms where 50K-gate density and 274 I/O are sufficient. Engineers select the -3 speed grade when timing margins are tight; the part is also available in -1, -2, and -4 speed grades to trade speed for cost. Note that the FLEX 10K family is mature and now generally considered NRND or obsolete for new designs—current generation Intel FPGAs (Cyclone, MAX series) are the recommended successors. When designing with this device, ensure the configuration EEPROM or download cable (such as the Altera ByteBlaster) is selected for the 3.3 V core. Decoupling must follow the FLEX 10K reference design with 0.1 µF and 10 µF capacitors near each VCCINT and VCCIO pin, and unused I/O pins should be left floating per datasheet guidance. This page synthesizes distributor stock, drop-in alternatives from the FLEX 10K family, and practical design notes not found in the manufacturer datasheet alone. Pricing references are as of 2026-09-11.

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EPF10K50VBC356-4 - FLEX 10K FPGA, 50K Gates, 356-BGA | Intel
EPF10K50VBC356-4

EPF10K50VBC356-4 - FLEX 10K FPGA, 50K Gates, 356-BGA | Intel

The Intel (formerly Altera) EPF10K50VBC356-4 is a member of the FLEX 10K embedded programmable logic device family, providing 50,000 typical gates, 2,880 logic cells, and 274 user I/Os in a 356-pin BGA package. It integrates a CMOS logic-array fabric with embedded array blocks, delivering up to 125 MHz internal operation from a 3.3 V supply. The device implements System-on-a-Programmable-Chip (SOPC) integration by combining look-up tables, embedded array blocks, and FastTrack interconnect on a single die. An FPGA (Field Programmable Gate Array) is a semiconductor integrated circuit composed of configurable logic blocks, programmable interconnects, and I/O cells that engineers can program after manufacture to implement arbitrary digital logic. FPGAs sit in the broader hierarchy of programmable logic devices (PLDs), which also includes simple PLDs (SPLDs), complex PLDs (CPLDs), and modern heterogeneous SoC FPGAs that embed hard processor cores. Within Intel's portfolio, FPGAs occupy the programmable-logic tier alongside CPLDs (MAX series) and high-end SoC FPGAs (Stratix, Cyclone, Agilex). The FLEX 10K family was historically the industry's first embedded PLD family to provide true SOPC integration, enabling designers to mix soft logic with embedded array blocks for memory and arithmetic functions. The EPF10K50VBC356-4 features a 0.6 ns propagation delay, 16 embedded array blocks, and 3,152 logic elements, supporting designs that demand moderate-density logic with embedded memory and arithmetic blocks. The 356-ball BGA package provides high I/O density suitable for complex glue-logic, bus-interface, and signal-processing tasks. Configuration is performed via in-system programming through the IEEE 1149.1 JTAG interface or with an external serial/configuration EPROM. Typical applications span telecommunications infrastructure, industrial control, military and aerospace systems, ASIC prototyping, and DSP preprocessing. Engineers select the FLEX 10K family when they require deterministic timing, embedded array blocks, and JTAG-based in-system reprogrammability within a moderate-density logic budget. When designing with the EPF10K50VBC356-4, observe the 3.3 V supply rail tolerance, ensure adequate decoupling across the BGA balls, and follow the JTAG configuration procedure in the manufacturer datasheet. The commercial temperature grade (0 C to 70 C) limits deployment to non-automotive environments - use the -N suffix variant for industrial extended-temperature designs. This page synthesizes distributor pricing, drop-in package-compatible alternatives, and practical design notes not found in the original manufacturer datasheet.

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EPF10K50VBI356-3 - FLEX 10K FPGA, 50K Gates, 356-BGA | Intel
EPF10K50VBI356-3

EPF10K50VBI356-3 - FLEX 10K FPGA, 50K Gates, 356-BGA | Intel

The Intel (formerly Altera) EPF10K50VBI356-3 is a member of the FLEX 10K family of Field Programmable Gate Arrays, integrating 50,000 typical gates with 2,880 logic cells and 20,480 RAM bits in a 356-ball LBGA package. It is built on a 0.42 µm CMOS SRAM process and supports up to 274 user I/O pins, with a maximum internal frequency of 125 MHz and propagation delay of 0.6 ns at speed grade -3. Operating from a 3.3 V core supply, the device includes an embedded array block (EAB) for System-on-a-Programmable-Chip (SOPC) integration, making it suitable for ASIC-replacement designs and high-density glue-logic replacement. A Field Programmable Gate Array (FPGA) is a semiconductor device built around an array of configurable logic blocks (CLBs) connected via programmable interconnect, allowing the hardware function to be redefined after manufacture. FPGAs sit within the broader hierarchy of programmable logic devices (PLDs) -> CPLDs -> FPGAs -> programmable SoCs, occupying the high-density end of that taxonomy. Compared to fixed-function ASICs, FPGAs offer lower NRE cost and faster time-to-market at the expense of unit cost, power, and absolute performance. Key features of the EPF10K50VBI356-3 include 360 Logic Array Blocks (LABs) for distributed logic implementation, dedicated EABs that provide up to 2,048 bits of dual-port RAM per block for efficient on-chip memory, and JTAG-compliant IEEE 1149.1 boundary-scan support for in-system programming and board-level test. The device is offered in commercial (0 °C to 70 °C) and industrial (-40 °C to 100 °C, indicated by the 'I' suffix) operating temperature grades, with multiple speed grades (-2, -3, -4) covering different Fmax/power trade-offs. The FLEX 10K architecture pairs a fine-grained logic fabric with coarse-grained embedded array blocks, allowing designers to implement both random control logic and structured datapath/memory functions on a single die. Each LAB contains eight Logic Elements (LEs), each LE carrying a 4-input LUT, a programmable register, and a carry chain. The EABs can be cascaded to form wider/deeper RAM blocks or used as product-term logic, enabling ROM, FIFO, and multiplier implementations without consuming logic resources. Typical applications include telecommunications line-card glue logic, industrial control and instrumentation front-ends, networking adapters, ASIC prototyping, and legacy system refresh where higher-density replacement FPGAs are unavailable. The 356-pin LBGA package supports the highest I/O count in the family, sufficing for memory bus bridging, multi-port interface aggregation, and bus-width conversion tasks. When designing with this part, observe the recommended 3.3 V I/O supply and ensure proper decoupling of every VCCINT/VCCIO pair with 0.1 µF capacitors placed within 5 mm of the BGA balls. The device requires JTAG-compatible configuration via the EPC1, EPC2, or a microprocessor; configure mode pins (MSEL0/MSEL1) according to the desired configuration scheme before power-up. This page synthesizes distributor pricing, drop-in FLEX 10K alternatives, and practical design notes not found in the standalone manufacturer datasheet.

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EPF10K50VBI356-3N - 50K Gates, 356-BGA FLEX 10K FPGA | Altera
EPF10K50VBI356-3N

EPF10K50VBI356-3N - 50K Gates, 356-BGA FLEX 10K FPGA | Altera

The Intel (Altera) EPF10K50VBI356-3N is a FLEX 10K family Field-Programmable Gate Array (FPGA) delivering 50,000 usable gates and 2,880 logic cells in a 356-pin LBGA package, built on a 0.42 µm CMOS SRAM process and supplied from a 3.3 V core rail. It integrates 360 Logic Array Blocks (LABs) with 274 user I/Os and Embedded Array Blocks (EABs) for on-chip RAM, providing 20,480 bits of memory. The speed grade "-3N" denotes the industrial-grade timing bin and lead-free (Pb-free) termination. An FPGA (Field-Programmable Gate Array) is a type of programmable logic device (PLD) that integrates configurable logic blocks (LBs/LABs), routing interconnects, and I/O cells onto a single die. Designers describe logic with HDL (VHDL/Verilog) and synthesize it onto the device using the vendor toolchain (Quartus/MAX+PLUS II). FPGAs sit between discrete logic ICs (74-series) and fixed ASICs: unlike 74HC/74LVT glue logic, FPGAs are re-programmable in-circuit; unlike ASICs, no mask set or NRE is required. Within the programmable logic hierarchy: PLD -> CPLD -> FPGA, and within the FPGA hierarchy: SRAM-based FPGA -> LUT-based logic fabric -> island-style architecture (used by FLEX 10K). Key features of the EPF10K50VBI356-3N include 50 K typical gates (around 23 K usable logic gates), 2,880 logic elements, 20,480 bits of embedded SRAM distributed across EABs, 360 LABs, and 274 user I/O pins. MultiVolt I/O supports interfacing with 5.0 V, 3.3 V, and 2.5 V devices. The device is in-system programmable (ISP) via JTAG (IEEE 1149.1 Boundary-Scan) using serial configuration, making it suitable for field-upgradeable designs. Typical applications for the EPF10K50VBI356-3N include telecommunications line cards, industrial control glue logic, bus-interface bridges (PCI, ISA, VME), and prototype/ASIC emulation. The 356-BGA package provides ample signal integrity for high-density parallel buses while keeping the board footprint manageable. Designers should consult the Altera FLEX 10K Device Handbook for timing models, I/O standards, and configuration schemes. Note: this device is mature/legacy silicon (introduced circa 1998-2000) and is now in the End-of-Life (EOL) phase - sourcing from authorized distributors and verifying date codes is recommended for new production builds.

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EPF10K50VBI356-4 - 50K Gates Flex 10K FPGA, 356-BGA | Intel / Altera
EPF10K50VBI356-4

EPF10K50VBI356-4 - 50K Gates Flex 10K FPGA, 356-BGA | Intel / Altera

The Intel / Altera (formerly Altera) EPF10K50VBI356-4 is a member of the FLEX 10K family of SRAM-based Field Programmable Gate Arrays (FPGAs), featuring 50,000 typical gates, 2,880 logic cells (LEs), 360 logic array blocks (LABs), and 274 user I/Os housed in a 356-ball LBGA package. The device is fabricated on a 0.42 µm CMOS process and operates from a 3.3 V core supply, with the speed grade '-4' indicating a specific timing closure within the FLEX 10K family. An FPGA (Field Programmable Gate Array) is a reconfigurable integrated circuit that combines programmable logic blocks, programmable interconnect, and programmable I/O cells on a single die, allowing designers to implement custom digital functions after manufacturing. FPGAs sit hierarchically under programmable logic devices (PLDs) and above application-specific integrated circuits (ASICs) in terms of flexibility versus NRE cost, making them ideal for prototyping, low-volume production, and systems that require post-deployment hardware updates. The FLEX 10K family was Altera's first embedded array family, integrating dedicated Embedded Array Blocks (EABs) for on-chip memory alongside logic, which pioneered the System-on-a-Programmable-Chip (SOPC) concept. Key features of the EPF10K50VBI356-4 include 20,480 typical usable gates, internal frequency support up to 125 MHz, propagation delay as low as 0.6 ns at the -4 speed grade, 16 embedded array blocks providing configurable memory, in-system programmability via JTAG, and a commercial operating temperature range of 0 °C to 70 °C. The device supports multiple I/O standards including LVTTL, LVCMOS, and PCI, configurable per pin through the Altera MAX+PLUS II or Quartus design tools. The 356-pin LBGA package provides high pin density suitable for designs requiring the full 274 I/O count plus dedicated clock, configuration, and JTAG pins. Technically, the FLEX 10K architecture combines a symmetric logic array with continuous routing resources and dedicated embedded memory blocks. Each LAB contains 8 logic elements with a local interconnect, while EABs provide RAM/ROM blocks up to 2,048 bits each. Configuration is volatile (SRAM-based), requiring an external configuration device such as the EPC2 or EPC8 on power-up. The '-4' speed grade is among the slower bin within the family, trading timing margin for power and yield, which makes this particular MPN suitable for cost-sensitive industrial and communication designs that do not require the highest possible clock rate. Typical applications include telecommunications line cards, industrial control and factory automation glue logic, legacy computing interface bridging, prototyping for ASIC replacement, test and measurement instrumentation, and military/aerospace systems where the FLEX 10K family has long-tail lifecycle support. The large 274-I/O count and 50K-gate capacity make this device well suited for bus interface aggregation, multi-protocol bridge ICs, and digital signal processing front-end pre-processing. When designing with this part, ensure a compatible configuration memory is selected (EPC2, EPC8, or compatible) and that JTAG chain integrity is verified before production. The 356-ball LBGA package requires careful PCB layout with controlled-impedance traces and a multi-layer stack-up; ball pitch and via-in-pad design rules must be followed. For new designs, consider migrating to Cyclone or MAX 10 families for lower power and longer lifecycle, but for maintenance of installed bases the FLEX 10K remains in service across many legacy systems. This page synthesizes distributor pricing, drop-in same-package alternatives from the FLEX 10K family, and practical design notes not found in the original datasheet alone, making it a higher-value reference than distributor product listings for engineers maintaining or replicating legacy FLEX 10K designs.

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EPF10K50VFC484-3 - 50K FLEX-10K FPGA 484-BGA | Intel / Altera
EPF10K50VFC484-3

EPF10K50VFC484-3 - 50K FLEX-10K FPGA 484-BGA | Intel / Altera

The Intel (formerly Altera) EPF10K50VFC484-3 is a member of the FLEX 10K family of Field-Programmable Gate Array (FPGA) devices, providing 50,000 typical gates of logic density integrated with 40,960 bits of embedded array RAM in a 484-ball FineLine BGA package. Speed grade -3 denotes a commercial temperature range (0C to 70C) with standard AC performance, targeting cost-sensitive high-volume designs. An FPGA (Field-Programmable Gate Array) 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 the industry's first embedded programmable logic device (PLD) family, providing System-on-a-Programmable-Chip (SOPC) integration by combining an embedded array for implementing megafunctions such as efficient memory and specialized I/O, with a logic array for general logic. Architecturally the EPF10K50VFC484-3 contains 360 logic array blocks (LABs), 2,880 logic elements, 13 embedded array blocks (EABs), and 291 user I/O pins - placing it in the mid-density class of the FLEX 10K hierarchy: FLEX 10K -> CPLD/FPGA hybrid family -> programmable logic device -> semiconductor IC. Key features include 291 I/O, 5V-tolerant I/O buffers (per FLEX 10K family), in-system programmability via the serial configuration device interface, multi-volt I/O support for 5.0V/3.3V/2.5V operation, and embedded memory blocks configurable as RAM, ROM, or FIFO. Supply voltage spans 3.0V to 3.6V with the FLEX 10K core running on 3.3V. The 484-pin FineLine BGA package is 23 mm x 23 mm with a 1.0 mm ball pitch, providing high-density I/O for complex glue-logic and bus-interface applications. Typical applications include high-volume glue logic, bus bridging and interface conversion, industrial control, telecommunications line cards, legacy system prototyping, and ASIC prototyping for SOPC (System-on-a-Programmable-Chip) emulation. The EPF10K50VFC484-3 is also widely used in educational and replacement scenarios because the FLEX 10K family is mature and well-supported by legacy toolchains (MAX+PLUS II and Quartus). Parts may ship as RoHS-compliant or leaded depending on date code; verify the specific date code before designing new production hardware. Designers should note that the FLEX 10K family is in long-term legacy status: the part is no longer recommended for new designs (NRND) and is supported primarily through Rochester Electronics, Intel's authorized legacy distributor. When designing a replacement board, prefer the MAX II, Cyclone, or MAX 10 families for new designs, and use the EPF10K50VFC484-3 only when matching legacy footprints.

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EPF10K50VFC484-3N - 50K-Gate FLEX-10K FPGA, 484-BGA | Intel / Altera
EPF10K50VFC484-3N

EPF10K50VFC484-3N - 50K-Gate FLEX-10K FPGA, 484-BGA | Intel / Altera

The Intel (formerly Altera) EPF10K50VFC484-3N is a member of the FLEX-10K family of SRAM-based Field-Programmable Gate Arrays (FPGAs), delivering 50,000 typical gates, 2,880 logic elements (LEs), and 40,960 bits of embedded RAM in a 484-ball FineLine BGA package. Built on a 0.42 µm CMOS process with a 3.3 V core supply (3.0 V–3.6 V tolerance), this -3 speed-grade device supports internal clock frequencies up to 125 MHz and offers 291 user I/Os for high-pin-count glue-logic, bus-interface, and DSP pre-processing designs. An FPGA (Field-Programmable Gate Array) is a class of programmable logic device (PLD) whose architecture consists of configurable logic blocks, programmable interconnect, and I/O cells, all controlled by on-chip SRAM configuration memory. The FLEX-10K family pioneered the embedded array block (EAB) concept, where each EAB provides 2,048 bits of dual-port RAM plus logic, enabling System-on-a-Programmable-Chip (SOPC) integration of memory, register files, and arithmetic functions alongside general-purpose logic. This positions the part within the broader hierarchy: programmable logic device -> PLD -> FPGA -> SRAM-based FPGA -> embedded-array FPGA -> power management and digital signal processing subsystems. Key features of the EPF10K50VFC484-3N include 2,880 LEs organized in 10 Logic Array Blocks (LABs), 12 Embedded Array Blocks (EABs) supplying 24 Kbits of true dual-port RAM, 291 user I/Os with MultiVolt I/O supporting 5.0 V, 3.3 V, and 2.5 V interfacing, and a propagation delay of 0.6 ns per LE in the -3 speed grade. The 484-FBGA (23 mm × 23 mm body) uses a 1.27 mm ball pitch, suitable for production surface-mount assembly but requiring X-ray or BGA rework tools for prototyping. The FLEX-10K architecture implements a four-input LUT-based logic element with a dedicated carry chain for fast arithmetic and a cascade chain for wide AND gates, while the EABs can be configured as RAM, ROM, or multiplier blocks. In-system configuration is supported via the passive serial (PS), passive parallel synchronous (PPS), passive parallel asynchronous (PPA), and active serial (AS) modes, with the bitstream loaded from a serial configuration EPROM or a microcontroller. JTAG (IEEE 1149.1) boundary-scan test is built in, simplifying board-level diagnostics. Typical applications span telecom line-card glue logic, industrial bus bridges (PCI to local bus), imaging front-ends, low-density data-path pre-processing, and legacy ASIC prototyping. Because the device uses SRAM configuration memory, it must be reconfigured at every power-up, which suits system-level flexibility over cold-start determinism. Designers should use the legacy Altera MAX+PLUS II or Quartus II (7.2 and earlier) toolchains because newer Quartus versions have dropped FLEX-10K support. The 484-BGA requires a minimum 6-layer PCB with controlled-impedance traces and an array of GND/VCC balls forming a power/ground plane thermal path. For new designs, consider the MAX II or Cyclone IV families, but for installed-base designs the FLEX-10K remains a supported, long-lifecycle component.

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