FPGA y CPLD
Productos (6666)
EP1K50QC208-3 - ACEX 1K FPGA 50K Gates 208-PQFP | Altera
The Altera EP1K50QC208-3 is a member of the ACEX 1K programmable logic family, integrating 50,000 typical gates, 2,880 logic cells, and 40,960 RAM bits into a single 208-pin PQFP package. It is a 2.5 V SRAM-based field-programmable gate array (FPGA) built on a 0.22 µm CMOS process, offering a maximum internal operating frequency of 166.67 MHz with a -3 speed grade. According to the Altera ACEX 1K datasheet family data sheet, the device provides 360 Logic Array Blocks (LABs), 147 user I/O pins, and 12 Embedded Array Blocks (EABs) for dual-port memory and megafunction implementation. A Field Programmable Gate Array (FPGA) is a programmable logic device (PLD) that combines configurable logic blocks, programmable interconnects, and dedicated memory resources on a single die. Within the integrated-circuit taxonomy, an FPGA sits under programmable logic devices, then semiconductor ICs, and finally integrated circuits. FPGAs are used to implement arbitrary digital logic, signal-processing pipelines, and glue logic that would otherwise require multiple discrete components, while remaining re-programmable in-system to fix bugs or upgrade functionality. The EP1K50QC208-3's defining features include die-efficient LUT-based logic combined with EAB memory blocks for efficient implementation of RAM, ROM, and specialized megafunctions such as multipliers and FIFO controllers. The device supports in-system configuration via passive serial, active serial, and JTAG modes, and is supported by the Quartus II and MAX+PLUS II design toolchains. The PQFP-208 package supports surface-mount assembly with 147 usable I/Os, sufficient for multi-bus glue-logic and mid-density digital control applications. The architecture is built around LABs containing 8 Logic Elements (LEs) each, with each LE containing a 4-input LUT, a programmable register, and a carry chain. The EABs provide 4 Kbit memory blocks, configurable as single- or dual-port RAM, ROM, or as look-up-table based logic. The device operates from a 2.5 V core supply with separate VCCIO banks for output voltage flexibility, and exposes multi-voltage I/O standards including LVTTL, LVCMOS, and PCI. Typical applications include telecommunications line-card glue logic, industrial control systems, test and measurement instrumentation front-ends, and legacy PCI bus interface bridging. The ACEX 1K family was positioned as a low-cost, low-power programmable alternative to ASICs for mid-volume products, and remains in service in long-lifecycle industrial and aerospace programs that have completed extensive design qualification. When designing with this part, note that the ACEX 1K family has been discontinued by Intel (formerly Altera) and is designated Not Recommended for New Designs. Engineers should validate long-term supply, use authorized-franchise distributors for current production runs, and consider Cyclone II/III/IV or MAX II CPLDs for new designs of similar density. This page synthesizes distributor stock status, same-family drop-in alternatives, and a candid lifecycle assessment not found on the manufacturer product page, helping engineers make informed design and procurement decisions.
EP1K50QC208-3AA - ACEX-1K FPGA 50K 2.5V | Altera
The Altera EP1K50QC208-3AA is an ACEX-1K family field-programmable gate array (FPGA) integrating 2,880 logic elements, 360 logic array blocks, 40,960 RAM bits and 147 user I/O pins in a 208-pin BFQFP (PQFP) package. It is a -3 speed-grade, 2.5 V device fabricated in a 0.22 um process, with a typical gate count of 50,000 gates and a listed maximum internal frequency of 166.67 MHz for the -3 speed grade. An FPGA is an integrated circuit that contains programmable logic blocks and programmable interconnects, allowing the same silicon to implement many digital functions after manufacturing. In a system hierarchy, FPGA-style programmable logic sits above fixed-function ASSPs and below full custom ASICs; it is configured by a bitstream and can be re-configured for updates or family variants. The ACEX-1K family was Altera's low-cost programmable logic family, combining logic fabric with embedded memory blocks for system-on-a-programmable-chip integration. Key differentiating specifications include the 2,880 logic elements arranged into 360 LABs, 6 dedicated inputs, 147 user I/O pins, and 40,960 RAM bits for small FIFOs or register files. The -3 speed grade supports a maximum internal frequency of 166.67 MHz, while the 2.5 V core supply range is 2.375 V to 2.625 V. The commercial temperature range is 0°C to 70°C, and the 208-pin PQFP package provides a square fine-pitch surface-mount footprint. Built on a second-generation 0.22 um process, the EP1K50QC208-3AA offers a transistor-count and cost structure suitable for moderate logic integration without the expense of a high-density flagship FPGA. The ACEX-1K architecture balances four-input look-up-table logic with embedded memory, making it appropriate for bus interfaces, state machines, and low-to-medium-speed datapath control. The 147 I/O pins permit parallel busses and control signals to be routed directly from the FPGA to peripherals. Typical applications include legacy industrial controllers, communication line-card glue logic, video timing generation, and FPGA architecture training boards. In these roles, the device provides reprogrammable gates for prototype iteration and can implement modest memory functions without external SRAM. The 40,960 RAM bits can be used for packet counters, small line buffers, or processor mailbox registers. When designing with the EP1K50QC208-3AA, remember that the ACEX-1K is an older family; exact configuration mode, I/O standard support, and power consumption should be confirmed in the manufacturer ACEX-1K datasheet before finalizing a production design. Because this is a mature part, planning for a pin-compatible faster or alternate grade can protect against allocation problems. This page synthesizes distributor stock data, package-compatible alternatives, datasheet availability, and practical design notes not found on a simple distributor listing, helping engineers make a faster BOM decision for legacy and mid-density FPGA applications.
EP1K50QC208-3N - 50K Gates ACEX-1K FPGA, 208-PQFP | Altera
The Intel (formerly Altera) EP1K50QC208-3N is a member of the ACEX-1K family of Field Programmable Gate Arrays (FPGAs) with 50,000 typical gates, 2,880 logic elements (LEs), 360 Logic Array Blocks (LABs), and 40,960 bits of embedded RAM, housed in a 208-pin Plastic Quad Flat Pack (PQFP / BFQFP) package with 147 user I/Os. It is fabricated on a 0.22 µm CMOS process, operates from a 2.5 V core supply, and is specified for the commercial 0 °C to 70 °C temperature range. An FPGA (Field-Programmable Gate Array) is a configurable logic device — a hierarchical category that sits between a CPLD (Complex Programmable Logic Device) and an ASIC (Application-Specific Integrated Circuit) — and the ACEX-1K family combines a look-up-table (LUT)-based logic fabric with Embedded Array Blocks (EABs) for efficient memory and DSP megafunction implementation. Within that taxonomy, the EP1K50 is positioned as a low-cost, die-efficient system-on-a-programmable-chip (SOPC) integration device, targeting glue-logic, bus-interface, and low-to-mid density state-machine designs. Key features of the EP1K50QC208-3N include a maximum internal frequency of 166.67 MHz, 1.4 ns pin-to-pin logic delay via dedicated FastTrack interconnect, in-system programmability through the IEEE 1149.1 JTAG interface, and dual-port RAM support inside the EAB blocks. The 'QC208' suffix identifies the 208-pin PQFP plastic surface-mount package, while the '3N' speed/packaging suffix indicates the -3 speed grade and lead-free / Pb-free terminal finish per the Altera ordering code conventions. Architecturally, each LAB contains 16 LEs and local interconnect; EABs provide 4 Kbit RAM blocks (4,096 bits per EAB × 10 EABs = 40,960 bits total) usable as RAM, ROM, or multiplier logic. FastTrack continuous routing lines run horizontally and vertically across the device, while each I/O element supports 3.3 V PCI compatibility on selected banks, plus JTAG boundary-scan testing. Typical applications for this part include industrial control and instrumentation, legacy telecom and networking glue logic, prototyping for larger Altera APEX/Stratix migrations, and replacement of discrete TTL/CMOS logic. The 2.5 V core and 208-pin PQFP make it a drop-in for designs that previously used 5 V PLDs but need the density of an FPGA. A critical design consideration is that ACEX-1K is a legacy family — the EP1K50QC208-3N is no longer recommended for new designs and should be sourced from authorized distributors with full traceability. Quartus II software (final version supporting ACEX-1K is 13.0 SP1) is required for synthesis, place-and-route, and programming file generation. This page synthesizes the official ACEX-1K datasheet parameters with distributor pricing, same-family drop-in alternatives (PQFP-208, -1/-2/-3 speed grades, NiPd/Au lead-free finish), and practical design notes not aggregated on the manufacturer's product page.
EP1K50QC208-3Q - 50K Gate ACEX 1K FPGA, 208-PQFP | Altera
The Altera EP1K50QC208-3Q is a 50,000-gate ACEX 1K family Field Programmable Gate Array (FPGA) with 2,880 logic elements (cells), 40,960 bits of embedded RAM, and 147 user I/Os, packaged in a 208-pin Plastic Quad Flat Pack (PQFP/BQFP). Built on a 0.22 µm CMOS process and powered by a 2.5 V core supply, it offers up to 166.67 MHz internal operation and is targeted at high-volume, low-cost SOPC (System-on-a-Programmable-Chip) applications. The -3 speed grade denotes the standard commercial speed bin, while the trailing "Q" suffix identifies the part as a military/aerospace temperature grade variant. An FPGA (Field Programmable Gate Array) is a programmable logic device that contains an array of configurable logic blocks (CLBs), programmable interconnects, and I/O cells. ACEX 1K belongs to the embedded-array PLD category, which combines look-up-table (LUT)-based logic fabric with embedded memory blocks (EABs) for efficient implementation of megafunctions such as dual-port RAM, ROM, FIFO and DSP functions. Positioned in the broader taxonomy, ACEX 1K sits between classic CPLDs (lower density) and the higher-end APEX / Cyclone families (higher density) within Altera's programmable logic portfolio. Key features include 360 Logic Array Blocks (LABs), 12 Embedded Array Blocks (EABs) totalling 40,960 bits of RAM, multi-volt I/O support (2.5 V / 3.3 V / 5.0 V tolerant), in-system programmability via IEEE 1149.1 JTAG, and built-in PCI compliance. The Look-Up Table (LUT) architecture delivers fast combinational logic, while the EABs provide up to 16 bits per block of dual-port RAM — a rare feature in this density class. The 208-pin PQFP package supports both commercial (0 °C to 70 °C) and industrial (-40 °C to 85 °C) operating ranges depending on suffix, with the -3Q suffix here indicating a ruggedized/military-grade temperature range. The ACEX 1K architecture uses a continuous interconnect structure (DirectDrive) with predictable timing, four-input LUTs, and dedicated carry chains for arithmetic. Each EAB can be configured as 256×16, 512×8, 1024×4, 2048×2 or 4096×1 memory, or as a multiplier block. I/O banks are independently configurable to 2.5 V, 3.3 V or 5.0 V LVTTL/LVCMOS interfaces, allowing mixed-voltage system designs without external level shifters. Typical applications include industrial glue logic and bus interface bridges, telecommunications line cards, military and avionics control systems, low-cost DSP preprocessing, glue logic for legacy 5 V/3.3 V systems, and PCI target devices. The 208-PQFP footprint also makes it suitable for through-hole-friendly assembly where BGA rework capability is limited. Compared to ASICs at this density, the ACEX 1K offers NRE-free prototyping and rapid design iteration through Quartus II design software. When designing with the EP1K50QC208-3Q, observe multi-volt I/O bank constraints — each bank shares a VCCIO rail, so mixed-voltage peripherals must be grouped. Use the Quartus II Place-and-Route fitter reports to verify timing closure at 166.67 MHz, and ensure JTAG chain integrity before relying on in-system programming for production. This page synthesizes distributor pricing, military/aerospace grade availability, drop-in alternatives within the ACEX 1K family, and practical Quartus II design notes not found in the original datasheet alone.
EP1K50QI208-2 - ACEX 1K 50K Gates FPGA, 208-PQFP | Altera
The Altera (Intel) EP1K50QI208-2 is a member of the ACEX 1K family of Field-Programmable Gate Arrays (FPGAs) that integrates 50,000 typical gates, 2,880 logic elements (LEs), and 40,960 bits of embedded SRAM in a 208-pin Power Quad Flat Pack (PQFP) package. The -2 speed grade indicates a moderate-performance tier targeting volume-cost applications, and the device operates from a 2.5 V core supply with multi-voltage I/O support. An FPGA (Field-Programmable Gate Array) is a programmable logic device that allows engineers to implement custom digital circuits using a matrix of configurable logic blocks (CLBs), programmable interconnect, and embedded memory. FPGAs sit in the broader semiconductor hierarchy alongside ASICs, microcontrollers, and CPLDs, and are preferred over ASICs when time-to-market, low NRE cost, or post-production design flexibility matters. Within the Altera/Intel portfolio, the ACEX 1K series is positioned as a low-cost, low-power FPGA family using a 2.5 V core process. Key features of the EP1K50QI208-2 include 147 user I/O pins, 360 Logic Array Blocks (LABs), built-in Phase-Locked Loops (PLLs), in-system programmability via SRAM configuration cells, and MultiVolt I/O supporting 2.5 V / 3.3 V / 5.0 V mixed-voltage interfacing. The 208-pin PQFP surface-mount package offers easy prototyping and rework on conventional PCB assembly lines, while the embedded dual-port SRAM enables on-chip FIFOs and small buffers without external memory. The architecture is built on a CMOS SRAM-based lookup-table fabric combined with dedicated routing, four input LUTs per LE, and fast carry chains for arithmetic operations. The -2 speed grade corresponds to roughly 166.67 MHz internal performance, which is sufficient for glue logic, custom bus interfaces, and many industrial control loops. The device supports JTAG-based boundary-scan testing and the Altera ByteBlaster or USB-Blaster programming cables. Typical applications for the EP1K50QI208-2 include DSL modem channel aggregation, low-cost Ethernet switches and routers, PCI bus bridges, custom peripheral controllers, industrial automation glue logic, glue logic between microcontrollers and DSPs, and legacy communication infrastructure. The wide voltage range and 147 I/Os make it suitable for legacy 5 V system interfacing where modern FPGAs may no longer offer 5 V-tolerant I/O. When designing with this part, note that the ACEX 1K family uses SRAM configuration cells, meaning the FPGA loses its configuration on power-down and must be reconfigured at every boot from a serial configuration PROM such as an EPC2 or EPCS device. Designers must therefore budget for a configuration device on the board and ensure the JTAG chain is correctly ordered for in-system reprogramming during board bring-up. This page synthesizes distributor pricing, SameFrame pin-compatible alternatives, and practical design guidance not found in the original ACEX 1K datasheet - giving engineers a single reference for sourcing and migration decisions.
EP1K50QI208-2N - ACEX-1K FPGA 2880 LE 208PQFP | Intel
The Intel EP1K50QI208-2N is a 2.5 V ACEX-1K field-programmable gate array (FPGA) that provides 2,880 logic elements, 50,000 typical logic gates and 147 user I/O signals in a 208-pin plastic quad flat pack (BFQFP/PQFP-208). The -2 speed grade and N lead-free suffix define this ordering code. An FPGA is a configurable integrated circuit whose logic blocks and interconnects can be reprogrammed after manufacturing to implement arbitrary digital logic. The ACEX-1K family belongs to Altera's cost-optimized programmable-logic product line, now supported by Intel, and is positioned between the smaller ACEX-1K / FLEX families and larger APEX devices. Within the hierarchy, an FPGA is a type of programmable logic device (PLD), which is itself an integrated circuit used mainly for digital systems such as control, protocol handling, and signal preprocessing. Headline features include 2,880 logic elements organized in 360 LABs, 40,960 bits of embedded memory, a 2.5 V core, 0.22 um process technology, and a maximum internal clock frequency near 200 MHz. The 147 user I/O pins permit parallel buses and multi-protocol interfaces. The N suffix indicates a lead-free, RoHS-compliant finish, while the I in the ordering code denotes industrial temperature screening for wider environmental tolerance. Architecturally, ACEX-1K devices combine LUT-based logic elements with FastTrack continuous row and column interconnect, a dedicated carry chain, and embedded memory blocks. The configuration bitstream is volatile and must be loaded at every power-up from a configuration device or host, making the FPGA flexible but requiring an external PROM or microcontroller. The 2.5 V supply lowers power compared with earlier 3.3 V/5 V PLDs, and the 208-pin QFP is solderable in conventional reflow processes. Because it offers moderate density and high I/O count, the EP1K50QI208-2N is well suited to legacy industrial control boards, communication bridging, measurement instruments, and ASIC-to-FPGA replacements. The 40 Kbit memory handles small FIFOs; 2,880 LEs implement 8- and 16-bit state machines and datapaths. The industrial grade supports deployments in unventilated cabinets or mild outdoor enclosures when combined with proper thermal design. Designers should give attention to power distribution: decouple every VCC and VCCIO pin with a 0.1 uF ceramic capacitor and place a bulk capacitor on the printed-circuit board near the FPGA. Since ACEX-1K is SRAM-based, include an EPC1/EPC2 configuration source or download path, and verify JTAG instructions. Follow all I/O voltage rules because the core is 2.5 V while I/O banks may be powered from different supplies. This page adds the information-gain summary you will not find in one datasheet: distributor availability outlook, estimated volume pricing as of 2026-09-07, a set of pin-compatible ACEX-1K Q208 drop-in alternatives, and practical design checks for legacy FPGA bring-up. You should still consult the official ACEX-1K datasheet for pinouts, timing, and absolute maximum ratings.
EP1K50TC144-1 - ACEX-1K 50K-Gate FPGA, 144-LQFP | Altera
The Altera (now Intel) EP1K50TC144-1 is an ACEX-1K family Field Programmable Gate Array (FPGA) built on a 2.5 V CMOS process, providing approximately 50,000 system gates with 2,880 logic elements (cells) and 40,960 bits of embedded RAM in a 144-pin LQFP (also referred to as TQFP) surface-mount package. It is specified for commercial-grade operating conditions with a maximum internal clock frequency around 250 MHz, and supports 102 user I/O pins routed through 360 logic array blocks (LABs). The device combines a look-up table (LUT) based logic fabric with dual-port embedded array blocks (EABs) that can implement RAM, ROM, or specialized megafunctions such as multipliers and FIFOs. What is an FPGA? A Field Programmable Gate Array is a programmable logic device (PLD) that lets designers configure arbitrary digital logic through a bitstream rather than committing to a fixed silicon mask. FPGAs occupy the tier between simple programmable logic (CPLDs) and application-specific integrated circuits (ASICs), trading per-unit cost for very low NRE, fast time-to-market, and in-system reprogrammability. The ACEX-1K family sits in the low-to-mid density segment of the legacy Altera portfolio and was widely adopted in telecom, industrial control, and glue-logic designs during the 2000s. Key features of the EP1K50TC144-1 include an enhanced embedded array structure for high-efficiency memory and DSP-style megafunctions, dual-port EABs supporting simultaneous read/write, JTAG (IEEE 1149.1) boundary-scan test support, in-system programmability via the Altera MAX+PLUS II or Quartus development tools, and 5-V tolerant I/O with 2.5 V core operation. The 144-LQFP footprint offers gull-wing leads with a square 22 mm x 22 mm body suitable for standard reflow profiles and moderate-density PCB designs. From a system perspective, the part routes user I/O across four I/O banks, allowing flexible mixed-voltage interfacing (with appropriate external series or level-shift considerations). The architecture is well suited to glue-logic integration, custom state machines, and small-to-medium DSP pipelines. Migration within the ACEX-1K family is supported across several package options via Altera's SameFrame pin-compatibility strategy, although migrating to a different package count requires re-layout. Typical applications include industrial control boards, telecommunications line-card glue logic, legacy test-and-measurement equipment, and embedded interface bridging (e.g., custom bus controllers). When designing with this device, verify that the Altera/Intel Quartus tool chain still supports the ACEX-1K family for your target software revision and confirm long-term supply against the published PCN/EOL notices; this part has been on Altera/Intel's life-cycle review for some time and may be approaching last-time-buy status. Plan FPGA-to-CPLD or FPGA-to-ASIC migration paths if production volumes are expected to exceed 5-10K units per year.
EP1K50TC144-1N - ACEX 1K FPGA, 50K Gates, 144-TQFP | Intel / Altera
The Intel (formerly Altera) EP1K50TC144-1N is a member of the ACEX 1K family of 2.5V field-programmable gate arrays (FPGAs) providing low-cost system-on-a-programmable-chip (SOPC) integration. Housed in a 144-pin TQFP surface-mount package, it integrates 2,880 logic elements distributed across 360 logic array blocks (LABs), delivers up to 199,000 equivalent gates, and includes 40,960 bits of embedded dual-port RAM. The device operates from a 2.375V to 2.625V supply (typical 2.5V) and supports 102 user I/O pins. An FPGA (Field-Programmable Gate Array) is a programmable logic device that combines the architectural density of a gate array with user-configurable interconnect and logic. FPGAs sit within the broader taxonomy of programmable logic devices (PLDs) -> logic arrays -> programmable semiconductors. The ACEX 1K family was engineered specifically for high-volume, cost-sensitive applications and combines embedded array blocks (EABs) for memory and specialized megafunctions with a logic array fabric optimized for general-purpose logic. This dual structure distinguishes ACEX 1K from pure CPLDs and from later Cyclone families. Key features include a maximum operating frequency of 180 MHz, built-in IEEE 1149.1-compliant JTAG boundary-scan test (BST) circuitry, PCI Local Bus Specification Revision 2.2 compliance for 5.0V operation in the -1 speed grade, an enhanced embedded array for implementing megafunctions, and dual-port RAM support. The CMOS process and 2.5V core reduce power consumption relative to 5V and 3.3V predecessors while preserving adequate speed for glue logic, bus interface, and moderate-complexity DSP tasks. Typical applications span low-cost system-on-a-programmable-chip designs, PCI bus bridges, communications infrastructure glue logic, industrial control and instrumentation, video/image processing front-ends, and DSP coprocessor interfacing. Designers leverage the embedded array blocks to instantiate memory, multipliers, and other megafunctions without consuming general logic resources, which preserves logic element count for state machines and datapath control. When designing with this device, allocate I/O banks carefully because the 2.5V core requires careful level-shifting to interface with 3.3V and 5V peripherals. The TQFP-144 footprint supports hand-soldering and prototype rework but is not the highest-density option in the ACEX 1K line; designers targeting smaller board area should evaluate QFP-208 or BGA packages. Programming is supported by the legacy MAX+PLUS II toolchain as well as selected Quartus versions.
EP1K50TC144-2 - 50K Gate ACEX-1K FPGA, 144-TQFP | Intel / Altera
The Intel (formerly Altera) EP1K50TC144-2 is a member of the ACEX-1K family of 2.5 V field-programmable gate arrays with 50,000 typical gates, 2,880 logic elements, and 40,960 system gates, housed in a 144-pin TQFP (TC144) package. The suffix "-2" denotes a commercial speed grade suitable for cost-sensitive, non-timing-critical designs; the "TC" envelope code indicates a thin quad flat pack (TQFP) surface-mount body. Per the verified distributor data, the device exposes 102 user I/O pins organized as 360 logic array blocks (LABs) with embedded array blocks (EABs) for on-chip memory and dedicated logic functions. An FPGA (Field-Programmable Gate Array) is a class of programmable logic device (PLD) that allows engineers to implement arbitrary digital logic, glue logic, state machines, bus interfaces, and soft processor cores after PCB fabrication. Within the broader semiconductor hierarchy, FPGAs sit above ASICs and microcontrollers in design flexibility but below them in per-unit cost and static power. The ACEX-1K family belongs to Altera's low-cost SRAM-based FPGA lineage, predating the Cyclone series and offering embedded dual-port RAM blocks, a 2.5 V core supply, and a 0.22 µm CMOS process that targets glue logic, communication bridges, and low-volume ASIC prototyping. Key features of the EP1K50TC144-2 include 49,152 bits of embedded RAM distributed across EABs, multi-voltage I/O support via selectable bank standards, in-system programmability through the IEEE 1149.1 JTAG interface and Altera EPC configuration devices, and a maximum internal toggle frequency around 200 MHz. The 144-pin TQFP body provides manageable board-level assembly using conventional SMT lines without requiring fine-pitch BGA reballing, easing low-to-medium volume production and bench prototyping. The architecture combines a continuous interconnect network with LAB-based logic, EAB-based memory, and dedicated I/O element (IOE) cells with slew-rate and drive-strength control. Each LAB contains ten logic elements (LEs), and each LE embeds a 4-input LUT plus a programmable register, enabling efficient mapping of wide combinational paths and pipelined datapaths. The 2.5 V core and I/O bank supplies allow interfacing with 3.3 V peripherals through level-shifting I/O standards. Typical applications include industrial control and glue logic replacement, communication protocol bridges (UART, SPI, I2C), low-volume ASIC prototyping, educational and lab development boards, parallel-to-serial converters, and simple peripheral controllers. Designers also target the EP1K50TC144-2 for legacy system upgrades where existing ACEX-1K designs are being re-spun or migrated to a long-lifecycle pin-compatible footprint. When designing with this part, note that the ACEX-1K family is mature, and Intel has transitioned new designs to the Cyclone and MAX families. Designers should verify long-term availability through franchised distributors and confirm that legacy Quartus II (or MAX+PLUS II) toolchains support the chosen speed grade. JTAG programming with EPC configuration devices is the standard in-system configuration path. This page synthesizes franchised distributor pricing (DigiKey, Mouser, Octopart), drop-in same-package alternatives from the EP1K50 family, and practical design notes not consolidated in the original ACEX-1K datasheet family document.
EP1K50TC144-2N - 50K Gate ACEX-1K FPGA, 144-LQFP | Altera
The Altera (now Intel) EP1K50TC144-2N is a member of the ACEX-1K family of Field Programmable Gate Arrays (FPGAs), delivering 50,000 typical gates and 2,880 logic elements in a 144-pin LQFP (TQFP-144) commercial-grade package. It integrates 102 user I/Os, 40,960 bits of embedded RAM (EAB blocks), 360 Logic Array Blocks (LABs), and operates at up to 200 MHz internal frequency with 0.22 µm CMOS process technology on a 2.5 V core supply. An FPGA (Field Programmable Gate Array) is a semiconductor integrated circuit containing an array of configurable logic blocks (CLBs), programmable interconnect, and I/O cells that engineers can configure after manufacture to implement custom digital logic functions. The ACEX-1K family sits in the broader taxonomy: FPGA → programmable logic device (PLD) → logic IC → integrated circuit (IC). ACEX-1K was Altera's low-cost, 2.5 V alternative positioned between CPLDs and higher-density SRAM-based FPGAs such as APEX 20K and Stratix. Key features of the EP1K50TC144-2N include 2,880 logic elements, 50,000 typical gates (up to 100,000 maximum), 12 embedded array blocks (EABs) of 4,096 bits each for dual-port RAM, ROM, or FIFO implementation, fast propagation delay in the nanosecond class, JTAG-compliant boundary-scan test support, and a 0.4 ns internal speed grade (the "-2" suffix). The device supports in-system programming via the serial configuration scheme and supports multiple I/O standards including LVTTL, LVCMOS, and PCI. The device implements an enhanced embedded array structure where each EAB block provides up to 4,096 bits of dual-port RAM, enabling efficient memory and specialized logic functions such as multipliers, finite impulse response (FIR) filters, and microcontrollers in a single chip. This architecture allows SOPC (System-on-a-Programmable-Chip) integration with megafunctions, reducing overall system cost and board area for designs that previously required separate logic and memory chips. Typical applications for the EP1K50TC144-2N include glue logic replacement, telecommunications interface bridging, industrial control and factory automation subsystems, prototype ASIC emulation, and digital signal processing (DSP) front-end pre-processing. It is also used in legacy telecom line cards, military/aerospace control electronics, and educational FPGA platforms where its 144-LQFP through-hole-friendly footprint simplifies laboratory rework and programming. When designing with this device, designers must ensure proper decoupling on all VCCINT (2.5 V core) and VCCIO (3.3 V/2.5 V/1.8 V I/O) rails, use a configuration device or JTAG programmer for bitstream loading, and respect the maximum supported clock frequency at the chosen speed grade. The part is now in the Altera/Intel legacy product line, so lifecycle planning should consider migration to Cyclone or Cyclone II equivalents for new designs. This page synthesizes distributor pricing, drop-in alternative MPNs, and practical design notes that are not consolidated in the manufacturer datasheet PDF, providing engineers with a single source for procurement and second-source decisions.
EP1K50TC144-3 - ACEX-1K 50K FPGA 144-TQFP | Intel / Altera
The Intel (formerly Altera) EP1K50TC144-3 is a 50,000-gate ACEX-1K family Field-Programmable Gate Array (FPGA) housed in a 144-pin TQFP (TQFP-144) surface-mount package. It integrates 2,880 logic cells, 40,960 system gates, 49,152 bits of embedded RAM, 360 LABs/CLBs, and 102 user I/Os, with a maximum operating frequency of 166.67 MHz at 2.5 V core supply. The device is fabricated on a 0.18 μm CMOS process with a 2.5 V core, making it a low-cost, system-on-a-programmable-chip (SOPC) platform for high-volume designs. A Field-Programmable Gate Array (FPGA) is a type of programmable logic device (PLD) that combines configurable logic blocks (LABs/CLBs), programmable interconnect, and I/O cells on a single die. FPGAs sit within the broader taxonomy of programmable logic devices (PLD) -> logic integrated circuits (logic IC) -> integrated circuits (IC) -> semiconductors. They enable parallel hardware execution, hardware-accelerated DSP, and rapid design iteration compared with fixed ASICs or microcontrollers. The ACEX-1K family specifically targets cost-sensitive, high-volume applications that previously required gate-array ASICs. Key features of the EP1K50TC144-3 include a -3 speed grade, 360 LABs, 2,880 logic elements, 49,152 bits of embedded dual-port RAM, 102 maximum user I/Os, JTAG-based in-system programmability via IEEE 1149.1 boundary-scan, MultiVolt I/O supporting 2.5 V/3.3 V/5.0 V mixed-voltage interfacing, and a low-power 2.5 V core. The TQFP-144 package has a low-profile gull-wing lead format compatible with conventional SMT assembly lines. Architecturally, the EP1K50TC144-3 uses a Look-Up Table (LUT)-based logic fabric backed by an Embedded Array Block (EAB) structure. Each EAB provides up to 4,096 bits of dual-port RAM, ROM, or specialized megafunctions such as multipliers, FIFOs, and CAM blocks. This combination delivers deterministic timing, low skew, and efficient memory utilization without external SRAM. Typical applications include glue logic and bus interfacing in industrial controllers, low-cost DSP front-ends, communications protocol bridges (UART, SPI, I2C, parallel interfaces), legacy ASIC replacement designs, education platforms, prototyping for ASIC emulation, and small-volume production runs where mask charges are not amortizable. The wide MultiVolt I/O range makes the EP1K50TC144-3 particularly attractive when bridging 5 V MCUs to 3.3 V peripherals. When designing with this device, note that the -3 speed grade requires careful timing closure at the upper operating frequency limit of 166.67 MHz. Use Altera's legacy MAX+PLUS II or Quartus II design software for synthesis, fitting, place-and-route, and programming file generation. The 144-TQFP package has limited thermal dissipation; consult the device handbook for thermal design guidelines if operating at industrial temperature extremes. This page synthesizes distributor pricing, drop-in alternative MPNs from the same ACEX-1K family, and practical design notes that go beyond the data sheet alone. Lifecycle status, parametric proximity, and pinout details are presented in a form optimized for engineer decision-making.
EP1K50TC144-3N - ACEX-1K 50K Gates FPGA, 144-LQFP | Intel / Altera
The Intel / Altera EP1K50TC144-3N is a 50,000-gate ACEX-1K family Field Programmable Gate Array (FPGA) with 2,880 logic elements and 40,960 system gates, housed in a 144-pin LQFP (TQFP-144) surface-mount package. It integrates 102 user I/Os, 360 Logic Array Blocks (LABs), and 12 Embedded Array Blocks (EABs) providing 40 kbit of dual-port SRAM, fabricated on a 0.22 µm CMOS process and powered by a 2.5 V core supply. The device supports in-system programmability via 4-wire JTAG (IEEE 1149.1) and Altera serial configuration schemes. An FPGA is a semiconductor device built around an array of configurable logic blocks (CLBs/LABs) interconnected by a programmable routing matrix. FPGAs are positioned in the programmable logic hierarchy above CPLDs and below ASICs in terms of integration density, offering hardware-level parallelism for digital signal processing, glue logic, bus bridging, and protocol implementation. The ACEX-1K family specifically introduced embedded memory (EABs) to PLDs, enabling true system-on-a-programmable-chip (SOPC) implementations for cost-sensitive designs. Key features include 166.67 MHz maximum internal operating frequency, 5.0 ns pin-to-pin logic delay, JTAG boundary-scan test support, multiVolt I/O supporting 2.5 V/3.3 V/5.0 V interfacing, and 102 user I/O pins arranged in four I/O banks. The architecture combines a fine-grained logic fabric with coarse-grained EAB memory blocks, allowing efficient implementation of megafunctions such as FIFOs, dual-port RAM, and DSP multipliers without external memory. The 0.22 µm process technology delivers a balance of low static power and high performance. The four I/O banks support independent voltage reference (VREF) inputs, allowing mixed-voltage interfacing on a single die. Programmable interconnect delays and register-rich LABs optimize timing closure for state-machine and pipeline designs. Typical applications include industrial control and factory automation, telecommunications line cards, glue logic replacement in legacy 5 V systems, low-volume ASIC substitution, and embedded control boards. The 144-LQFP plastic package simplifies prototyping and rework compared to BGA alternatives. Designers should note that EP1K50TC144-3N is now classified Obsolete, so production runs require last-time-buy planning, firmware bitstream compatibility must be verified against Quartus II version 13.0 or earlier, and migration to Cyclone II / Cyclone III families is recommended for new designs. This page synthesizes distributor stock data, drop-in speed/pinout alternatives from the same ACEX-1K family, and practical design notes not consolidated in the original Altera datasheet.
EP1K50TI144-1X - 50K Gate ACEX 1K FPGA, 144-LQFP | Intel / Altera
The Intel / Altera EP1K50TI144-1X is a member of the ACEX 1K family of Field Programmable Gate Arrays, integrating 50,000 equivalent gates and 2,880 logic elements across 360 Configurable Logic Blocks (CLBs) in a 144-pin TQFP/LQFP package with 0.5 mm pitch. The device uses a 2.5 V CMOS core (2.375 V to 2.625 V supply range) and supports a maximum clock frequency of approximately 90 MHz, with 102 general-purpose user I/O pins and 6 dedicated input pins for clock and global control signals. An FPGA (Field Programmable Gate Array) is a type of programmable logic device (PLD) that contains an array of configurable logic blocks (CLBs), embedded memory blocks (EABs / ESBs in ACEX 1K), and programmable routing. FPGAs belong to the semiconductor hierarchy: programmable logic IC -> PLD -> digital IC -> integrated circuit. Unlike fixed-function ASICs, FPGAs are configured by the user after manufacture using an HDL bitstream and a vendor toolchain (Quartus for ACEX 1K), making them ideal for prototyping, low-volume production, and glue-logic consolidation. Key features of the EP1K50TI144-1X include on-chip SRAM-based configuration (volatile, requires external configuration device on power-up), embedded array blocks (EABs) for efficient memory and multiplier implementation, multi-volt I/O support for interfacing to 2.5 V, 3.3 V, and 5 V systems, and an industrial operating temperature range (-40 C to +85 C) suitable for factory and outdoor equipment. The ACEX 1K architecture combines look-up-table based logic fabric with EAB memory, giving it a hybrid advantage over pure LUT-based contemporaries. In the broader ACEX 1K portfolio the EP1K50 sits between the EP1K10 (10K gates) and EP1K100 (100K gates), making it a sweet spot for medium-complexity glue logic, bridge designs, and pre-ASIC prototyping. The "-1" speed grade is the slowest of three available grades and offers the lowest cost; the "-2" and "-3" grades provide higher Fmax but consume more power. The "X" suffix indicates industrial temperature grade and tape-and-reel packaging per the Altera ordering code convention. Typical applications include industrial control glue logic, communication protocol bridges (UART/SPI/I2C consolidation), legacy peripheral replacement, test and measurement front-ends, and low-volume embedded control where a microcontroller's fixed peripherals are insufficient. Designers transitioning away from discrete 74-series TTL logic or older CPLDs use this part to consolidate 5 to 20 chips onto a single programmable device. When designing with the EP1K50TI144-1X, plan for an external EPC configuration ROM (e.g., EPC2 or EPC4) on the board because the ACEX 1K configuration is volatile. Use the Quartus II design tool (legacy version 9.0 or later) for HDL entry, synthesis, and place-and-route; the bitstream must be reformatted if migrating to a different package. This page synthesizes distributor pricing snapshots, drop-in package-compatible ACEX 1K family variants, and practical design notes not found in the manufacturer datasheet alone.
EP1K50TI144-2 - 50K-Gate ACEX-1K FPGA, 102 I/O, 144-LQFP | Intel
The Intel (formerly Altera) EP1K50TI144-2 is a member of the ACEX-1K family of Field Programmable Gate Arrays (FPGAs), delivering 50,000 typical gates and 2,880 logic elements (LEs) in a 144-pin LQFP package. Operating from a 2.5 V core supply (2.375 V to 2.625 V range), this device provides 102 user I/O pins and is rated for industrial temperature operation (-40 °C to +85 °C). The "-2" speed grade positions this variant in the mid-performance tier of the ACEX-1K lineup, balancing timing margin against unit cost. An FPGA (Field Programmable Gate Array) is a semiconductor integrated circuit composed of configurable logic blocks (CLBs), programmable interconnects, and I/O cells that can be re-programmed to implement arbitrary digital logic. ACEX-1K sits within the broader taxonomy of programmable logic devices (PLDs) -> complex programmable logic devices (CPLDs) / FPGAs -> SRAM-based LUT FPGAs -> low-cost FPGAs -> embedded array FPGAs. The EP1K50TI144-2 specifically uses a Look-Up Table (LUT)-based architecture with embedded array blocks (EABs) that support dual-port RAM, ROM, FIFO, and specialized megafunctions, enabling system-on-a-programmable-chip (SOPC) integration. Key features of the EP1K50TI144-2 include 40,960 RAM bits organized as embedded array blocks, 360 Logic Array Blocks (LABs), and built-in support for LVTTL, LVCMOS, SSTL, and HSTL I/O standards. The device also integrates a JTAG boundary-scan test interface compliant with IEEE 1149.1, an in-system programmability (ISP) port, and a dedicated configuration circuitry that accepts bitstreams from EPC configuration PROMs or via passive serial/parallel controllers. Typical applications for the EP1K50TI144-2 include glue-logic replacement, industrial control interfaces, low-density telecommunications glue logic, and bridge/protocol conversion such as UART-to-PCI or I2C-to-parallel. The 144-LQFP package is hand-solder-friendly and compatible with low-cost PCB fabrication, making it well-suited for prototype runs and legacy system maintenance. Designers migrating to this part should note that ACEX-1K devices in the same 144-pin TQFP/LQFP package are pin-compatible across the family, allowing migration between EP1K10, EP1K30, and EP1K50 density points on the same PCB layout. This page synthesizes distributor pricing, ACEX-1K family pin-compatible alternatives, and practical design notes for the EP1K50TI144-2 that are not collated in the legacy ACEX 1K Device Family datasheet.
EP1K50TI144-2F - 50K-Gate ACEX-1K FPGA, 144-TQFP, Industrial | Intel
The Intel (formerly Altera) EP1K50TI144-2F is a member of the ACEX-1K family of Field Programmable Gate Arrays, delivering 50,000 equivalent gates, 2,880 logic elements, and 40,960 bits of embedded array RAM in a 144-pin Thin Quad Flat Pack (TQFP) package. It is built on a 0.22 µm CMOS process, supports a maximum clock frequency of 200 MHz (per family datasheet) and operates from a 2.5 V core supply (2.375 V to 2.625 V). The "-2" speed grade and industrial temperature suffix (no "N") indicate a fast speed bin and an industrial operating range, making this part well suited to industrial and commercial embedded systems. A Field Programmable Gate Array (FPGA) is a semiconductor integrated circuit composed of configurable logic blocks (CLBs), programmable interconnect, and I/O cells that the designer can program after manufacture to implement arbitrary digital functions. FPGAs sit between fixed-function Application-Specific Integrated Circuits (ASICs) and software-driven microcontrollers, offering parallel hardware acceleration, deterministic timing, and re-programmability. The ACEX-1K family belongs to the broader hierarchy of programmable logic devices (PLDs) and uses a look-up-table (LUT)-based architecture with embedded array blocks (EABs) that can be configured as RAM, ROM, or multiplier blocks. The EP1K50TI144-2F features 102 maximum user I/O pins, supports in-system programmability via the IEEE 1149.1 JTAG interface, and integrates dedicated clock management and routing resources. Its 2,880 logic elements deliver sufficient density for moderate-complexity glue logic, bus interfaces, state-machine control, and signal-processing pipelines, while the 40,960 bits of embedded RAM support small FIFOs, lookup tables, and data buffers without consuming general logic. Typical applications include industrial control and factory automation, telecommunications line cards and bridging, low-volume prototyping of ASIC replacements, automotive telematics and body controllers, and embedded test and measurement equipment. The 144-pin TQFP footprint is a mature, easy-to-assemble surface-mount package that supports both hand-soldering and standard reflow processes. When designing with this device, ensure that the Quartus II or MAX+PLUS II development toolchain is configured for the ACEX-1K family. Use the JTAG pins (TCK, TMS, TDI, TDO) exclusively for programming and boundary-scan testing, and add proper decoupling (0.1 µF per VCCINT pin, bulk 10 µF) close to the supply pins to suppress switching noise during configuration and high-utilization operation. Note that the ACEX-1K family is mature and approaching end-of-life, so plan obsolescence mitigation by evaluating current-generation Cyclone or MAX II equivalents for new designs. This page synthesizes distributor pricing, drop-in compatible ACEX-1K variants, and practical design notes not found in the manufacturer datasheet alone.
EP1K50TI144-2N - ACEX-1K 50K Gates FPGA, 102 I/O, 144-TQFP | Intel / Altera
The Intel / Altera EP1K50TI144-2N is a member of the ACEX-1K family of Field Programmable Gate Arrays (FPGAs), delivering 50,000 typical gates (40,960 logic elements) and 2,880 cells of embedded array in a 144-pin Thin Quad Flat Pack (TQFP) package. It provides 102 user I/O pins, 360 Logic Array Blocks (LABs), and is fabricated on a 0.22 µm process technology targeting a maximum internal operating frequency around 166.67 MHz. The "-2N" suffix denotes the device speed grade (faster) and the "N" indicates an industrial operating temperature range. An FPGA (Field Programmable Gate Array) is a class of programmable logic device (PLD) that combines the architectural flexibility of gate arrays with the design-turnaround benefits of user-programmability. In the system hierarchy, FPGAs sit between discrete logic (small-scale glue logic) and fixed-function Application-Specific Integrated Circuits (ASICs), offering a balance of density, performance, and reconfigurability. ACEX-1K was Altera's second-generation SRAM-based FPGA family and is a hypernym of CPLDs within the broader programmable logic taxonomy. Key features of the EP1K50TI144-2N include 12 embedded system blocks (ESBs) providing 6 Kbits of dedicated RAM per block, support for multiple I/O standards (LVTTL, LVCMOS, PCI, and others), in-system programmability via IEEE 1149.1 JTAG, and built-in clock management. The device is configured via a serial configuration EPROM (EPC) or the IEEE 1149.1 boundary-scan interface, supporting both SRAM-based and JTAG programming flows. Typical applications include glue logic replacement, interface bridging, custom state-machine implementation, low-to-medium density data-path processing, and prototyping platforms that can later be ported to higher-density Cyclone or newer Altera/Intel FPGA families. The 144-TQFP package supports traditional surface-mount assembly with a generous 0.5 mm pitch suitable for rework. When designing with this part, note that ACEX-1K is an older, mature family; verify that current Altera/Intel Quartus software supports the device and confirm long-term availability before committing to new designs. The 144-TQFP package is also convenient for hand-soldered prototypes.
EP1K50TI144-2Q - 50K-Gate ACEX-1K FPGA 144-TQFP | Intel / Altera
The Intel (formerly Altera) EP1K50TI144-2Q is a member of the ACEX-1K family of Field-Programmable Gate Array (FPGA) devices that delivers up to 50,000 typical gates of logic in a 144-pin TQFP package. Per the Verified Web Data (DigiKey listing 703782), this device integrates 2,880 logic elements and 40,960 bits of embedded array memory (EAB), with 102 user I/O pins available for board-level interfacing. The "-2" speed grade and industrial operating-temperature suffix "I" (combined as -2Q per Altera ordering nomenclature) place this part in the extended-performance, industrial temperature window, supporting system clocks beyond 100 MHz on internal logic. An FPGA is a semiconductor integrated circuit that can be electrically reconfigured after manufacturing to implement arbitrary digital logic, ranging from simple glue logic to complete processor subsystems. The ACEX-1K family specifically uses a 2.5 V core (per the digchip datasheet synopsis), an Enhanced Embedded Array Block (EAB) architecture for on-chip SRAM, and dual-port RAM capability, bridging low-cost SRAM-based PLDs and high-density SRAM FPGAs. Within the broader taxonomy, an FPGA belongs to programmable logic devices -> logic ICs -> integrated circuits, alongside CPLDs and mask-programmed gate arrays. Key features for this part include 102 user I/O pins (per DigiKey), 2,880 logic cells, 40,960 bits of embedded memory, in-system programmability via SRAM configuration cells, and built-in support for JTAG (IEEE 1149.1) boundary-scan testing. The 144-pin TQFP package offers a thin (1.0 mm) profile compatible with standard surface-mount assembly and provides a per-pin ESD protection structure typical of Altera ACEX-1K devices. Industrial temperature operation (-40 °C to +100 °C for the "I" grade) makes this part suitable for factory, outdoor, and automotive cabin environments. From an architectural perspective, the ACEX-1K family combines Look-up Table (LUT)-based logic elements for combinatorial and registered logic with dedicated EAB blocks for efficient memory implementation. Each EAB can be configured as 4,096 bits of RAM (single- or dual-port) or as a wide logic function, allowing megafunctions such as FIFOs, dual-port RAMs, and CAMs to be mapped efficiently. Configuration bitstream is loaded from a serial or parallel PROM at power-up; the device retains its SRAM configuration as long as VCCINT remains within specification. Typical applications for the EP1K50TI144-2Q include industrial control and factory-automation controllers, telecom line-card glue logic and protocol bridges, low-volume prototyping for ASIC designs, embedded DSP front-ends, and PCI/memory interface bridging. The 50K-gate density is sufficient for multi-channel UART/SPI controllers, motor-control state machines, and small RISC soft-cores such as the Altera Nios or open-source RISC-V implementations. A key design consideration for ACEX-1K devices is power-supply sequencing: the 2.5 V VCCINT and VCCIO banks must ramp monotonically with VCCINT preceding VCCIO, otherwise in-rush currents through I/O structures can latch-up. The FPGA also requires a configuration source (EPCS or compatible serial flash) unless pre-loaded at the factory. Designers migrating from the ACEX-1K family should be aware that this is a mature device: it has been NRND or EOL at Intel for many years, so lifecycle planning and last-time-buy evaluation are recommended. This page synthesizes current distributor pricing, drop-in ACEX-1K variants from the same family, practical design notes for 2.5 V core supplies, and pinout guidance not found in the manufacturer datasheet alone.
EP1K50TI144-2X - 50K-Gate ACEX 1K FPGA | Intel | 144-TQFP
The Intel EP1K50TI144-2X is a 50,000-gate Field Programmable Gate Array from the ACEX 1K family, housed in a 144-pin TQFP (Industrial temperature grade) package. The device integrates 2,880 logic elements organized as 360 Configurable Logic Blocks (LABs/CLBs), 40,960 bits of embedded SRAM, and 102 maximum user I/O pins. The '2X' speed grade designation places it in Altera's mid-range performance tier for this family. ACEX 1K is Altera's low-cost, SRAM-based FPGA family that bridges the gap between CPLDs and high-density FPGAs. As a field programmable gate array, an ACEX 1K device stores its configuration in volatile SRAM cells that must be loaded from an external PROM or controller at every power-up. The architecture combines look-up table (LUT)-based logic with embedded memory blocks, providing designers with a balance of logic density and on-chip storage for glue logic, bus interfacing, and small state-machine implementations. Key features of the EP1K50TI144-2X include a maximum operating frequency up to 833 MHz on internal paths, true LVTTL/LVCMOS/PCI-compliant I/O with user-configurable slew rate and drive strength, on-chip impedance matching, and built-in JTAG (IEEE 1149.1) boundary-scan support for board-level testing. The embedded array blocks (EABs) provide dedicated RAM/ROM functionality with widths up to 16 bits. The EP1K50TI144-2X uses a 0.18 µm CMOS process and operates from a 2.5 V core supply (VCCINT) with separate VCCIO banks that support mixed-voltage I/O standards (3.3 V, 2.5 V, 1.8 V). Industrial temperature grade parts (suffix 'I') are guaranteed across -40 °C to +100 °C operation, making the part suitable for non-automotive industrial, telecom, and instrumentation applications. Designers configure the device using Altera's MAX+PLUS II or Quartus development software, both of which support schematic, VHDL, and Verilog entry with synthesis, fitting, and timing analysis. Typical applications include industrial control interfaces, glue logic for legacy system upgrades, custom peripheral controllers in telecom equipment, low-density data-path acceleration, and prototyping vehicles for newer Cyclone/MAX 10 designs. The 144-pin TQFP with 0.5 mm pitch remains a familiar through-hole-friendly footprint for engineers migrating away from larger BGA-only devices. When designing with this part, ensure the configuration source (EPC2, EPC4, or microcontroller) matches the FPGA's 2.5 V VCCINT requirement and that JTAG chain integrity is preserved. Designers planning long-term production should note that ACEX 1K is a mature legacy family; current production designs should target Cyclone IV, MAX 10, or MAX V devices instead. This page synthesizes distributor pricing, cross-reference alternatives, and practical design notes not collected in a single place by the manufacturer datasheet, and it maps each verified value to its source URL for transparency.
EP1K50TI144-3 - 50K-Gate ACEX 1K FPGA, 102 I/O, PQFP-144 | Intel
The Intel (formerly Altera) EP1K50TI144-3 is a 50,000-gate Field Programmable Gate Array (FPGA) from the ACEX 1K family, housed in a 144-pin Plastic Quad Flat Pack (PQFP-144) package. The "TI" suffix indicates TQFP gull-wing industrial-temperature grade, and "-3" denotes the speed grade. The device integrates 2,880 logic elements (LEs), 40,960 RAM bits, and 102 user I/O pins, and operates from a 2.375 V to 2.625 V supply with a 2.5 V nominal core voltage. An FPGA (Field Programmable Gate Array) is a semiconductor integrated circuit that contains an array of programmable logic blocks connected via programmable interconnect, allowing designers to implement custom digital logic functions that can be reconfigured after manufacture. FPGAs occupy a unique position between fixed-function ASICs and software-programmable processors, offering hardware-timed performance, deterministic latency, and parallel execution for DSP, glue logic, and interface bridging tasks. The ACEX 1K family, introduced in 1999, was one of the first low-cost SRAM-based FPGAs and belongs to the broader taxonomy: FPGA -> Programmable Logic Device (PLD) -> Logic IC -> Integrated Circuit. Key features include 360 Configurable Logic Blocks (CLBs) with 2,880 LEs, 72 embedded array blocks (EABs) providing 40,960 bits of dual-port RAM, and 6 dedicated input pins. The -3 speed grade offers approximately 12.5 ns propagation delay through the LUT + interconnect path. Built on a 0.22 µm CMOS SRAM process, the ACEX 1K supports in-system programming via the IEEE 1149.1 JTAG interface and can be configured from a serial PROM, parallel byte-wide flash, or processor port. Industrial-grade parts (TI suffix) operate from -40 °C to +85 °C. Typical applications include glue logic and bus bridging in industrial controllers, motor control pre-processing, legacy telecommunication interface cards, and educational/development platforms where the established MAX+PLUS II or Quartus design flows remain in use. The PQFP-144 package supports through-hole-friendly fine-pitch surface-mount assembly. When designing with this device, note that the 2.5 V core requires careful decoupling, and configuration data must be reloaded at every power-up since the SRAM cells are volatile. For new designs, consider the Cyclone series for active lifecycle support; the ACEX 1K family has been EOL for many years.
EP1K50TI144-3N - 50K-Gate ACEX 1K FPGA, 102 I/O, 144-TQFP | Altera
The Altera (now Intel Programmable Solutions Group) EP1K50TI144-3N is a 50,000-gate member of the ACEX 1K family of CMOS field-programmable gate arrays, housed in a 144-pin TQFP (Industrial-grade, -3 speed grade, lead-free) package. The device integrates 2,880 logic elements, 40,960 bits of embedded array (EAB) SRAM, and provides 102 user I/O pins on a 2.5 V core supply (VCCINT 2.375 V to 2.625 V), with separate VCCIO banks supporting mixed-voltage I/O standards. ACEX 1K is a fine-grain, SRAM-based FPGA family introduced by Altera in the late 1990s and built on a 0.22 µm CMOS process. It is positioned in the taxonomy: FPGA -> programmable logic device (PLD) -> logic IC -> integrated circuit. The "EP1K" prefix denotes the family, "50" the gate-count tier (50K system gates), "TI" indicates the TQFP-144 industrial-temperature package, and the "-3N" suffix marks the -3 speed grade (fastest of the three ACEX 1K grades) with lead-free (Pb-free) NiPdAu terminal finish. Key features include up to 49,760 typical gates, 2,880 logic elements (LEs), 40 embedded array blocks (EABs, each 4 Kbit, total 40,960 RAM bits), 102 maximum user I/O, in-system programmability via a 4-pin JTAG (IEEE 1149.1) interface plus a passive-serial configuration scheme, multiVolt I/O supporting 2.5 V / 3.3 V / 5.0 V interfacing, and industrial operating temperature range of -40 °C to +85 °C. The -3 speed grade delivers internal clock frequencies above 166 MHz and is suited to glue-logic, bus-interface, and DSP-front-end designs. Typical applications include industrial control and factory-automation glue logic, communications infrastructure line-card glue logic, legacy PCI/ISA bus bridges, telecom backplane controllers, and cost-sensitive DSP pre-/post-processing pipelines where 50K gates are sufficient. The TQFP-144 industrial package is widely used in long-lifecycle designs where surface-mount rework and standard PCB-assembly processes are required. When designing, observe that ACEX 1K is volatile and must be configured from a serial PROM or a microprocessor on every power-up. The device uses a 2.5 V core supply and requires a configuration clock and DONE/Open-drain configuration-status signals to the host. A 100 µF bulk plus 0.1 µF decoupling network per VCC/VCCIO pin is recommended, plus a JTAG chain that supports ISP and board-level testing. Note that the ACEX 1K family has been in NRND/EOL transition since the mid-2010s - verify long-term supply before new design-in. This page synthesizes distributor inventory, drop-in ACEX 1K speed-grade alternatives, and practical configuration-layout guidance not consolidated in the original Altera datasheet.
EP1K50TI144-4 - ACEX 1K FPGA 50K Gates 144-TQFP | Altera
The Altera (now Intel) EP1K50TI144-4 is a member of the ACEX 1K family of Field Programmable Gate Arrays (FPGAs) housed in a 144-pin TQFP package. Built on a 2.5 V CMOS process, the EP1K50 family integrates up to 50,000 typical gates, 2,880 logic elements (LEs), and 40,960 bits of embedded array (EAB) SRAM organized into 5 Embedded Array Blocks. The device provides 102 user I/O pins plus 6 dedicated input pins, supporting a maximum clock frequency of 90 MHz at the -4 speed grade. An FPGA (Field Programmable Gate Array) is a type of programmable logic device that allows hardware designers to configure digital logic blocks, interconnects, and I/O after manufacture. FPGAs sit within the broader category of programmable logic devices (PLDs), alongside CPLDs and SPLDs, and are widely used for glue logic, prototyping, custom interfaces, signal processing pipelines, and ASIC emulation. The ACEX 1K family specifically targets low-cost, high-volume applications where traditional gate-array ASICs are uneconomical. Key features of the EP1K50TI144-4 include 2,880 logic elements, 40,960 bits of embedded SRAM, MultiVolt I/O supporting 2.5 V and 3.3 V interfacing on the same die, and 6 dedicated clock/abort input pins. The -4 speed grade places it in the slower tier of the family, but this is acceptable for industrial glue logic, peripheral bridging, and parallel interface expansion. The TQFP-144 package (0.5 mm pitch) is a plastic surface-mount land-grid-compatible outline allowing hand-rework and visual inspection. Typical applications include industrial control interfaces, parallel bus bridges, custom peripheral controllers, telecommunications line cards (legacy designs), and ASIC prototyping. The wide operating voltage tolerance (2.375 V to 2.625 V core) combined with 3.3 V-tolerant I/O makes it a flexible bridge between older 5 V-tolerant peripherals and modern 2.5 V cores when used with external level shifters. Designers should note that the ACEX 1K family is now legacy. Quartus II software is required for design entry, and the EP1K50TI144-4 is supported in legacy toolchains. New designs should evaluate Cyclone series or MAX II CPLDs for equivalent functionality with modern tool support. This page synthesizes pricing data from active distributors, drop-in compatible ACEX 1K speed-grade and package alternatives, and practical design notes not found in the original datasheet, helping engineers source and migrate from this legacy FPGA.
EP1K50TI144-4N - ACEX 1K FPGA 50K Gates 102 I/O TQFP-144 | Altera
The Altera EP1K50TI144-4N is a member of the ACEX 1K programmable logic device family, a 2.5V SRAM-based FPGA offering 50,000 typical gates, 2,880 logic elements, and 102 user I/O pins housed in a 144-pin Thin Quad Flat Pack (TQFP-144) package. It is built on a 0.18 µm CMOS process and targets glue-logic, bus-interface, and moderate-density state-machine applications where discrete CPLDs or multiple 74-series devices would otherwise be required. An FPGA (Field-Programmable Gate Array) is a programmable logic device that combines configurable logic blocks (LEs), programmable routing, and I/O cells into a single silicon die. Within the broader semiconductor hierarchy, an FPGA sits under the umbrella of programmable logic (PLD > CPLD > FPGA). The ACEX 1K family belongs to the low-cost, moderate-density segment of the Altera (now Intel) portfolio, designed to replace multiple discrete logic ICs with one re-programmable device that can be re-flashed in-system via JTAG. Key features include 40,960 typical usable gates, a 12.6 Kbit embedded array block (EAB) for memory or multiplier functions, six dedicated input pins, hot-socketing support, and MultiVolt I/O allowing 2.5V/3.3V/5.0V interfacing. The -4 speed grade is one of the faster bin selections in the family, supporting system clock frequencies up to approximately 90 MHz depending on the design's logic depth. The device is configured at power-up from a serial configuration EPROM or via the JTAG port. Architecturally, each logic element contains a 4-input look-up table (LUT), a programmable register, carry-chain logic, and cascade-chain logic for wide functions. The embedded array blocks (EABs) provide dual-port RAM, ROM, or synchronous arithmetic functions, making the EP1K50TI144-4N suitable for FIFO buffers, small DSP blocks, and protocol translators. Configuration bitstream is loaded from an EPC2 or EPC8 serial configuration device. Typical applications include bus-interface bridging (e.g., PCI to local bus), industrial control glue logic, telecommunications backplane multiplexing, low-density data-path processing, and prototyping of larger Altera designs before silicon migration to Cyclone or MAX families. Designers moving production volumes today usually port to the equivalent logic on a Cyclone III/IV device, but the EP1K50TI144-4N remains a valuable drop-in for legacy boards and long-life industrial equipment. When designing with this device, observe the 2.375V-2.625V core supply tolerance, place 0.1 µF decoupling capacitors within 5 mm of every supply pin, and tie unused I/O banks to a defined logic level through the Quartus software's default pin assignment. The configuration pins (nCONFIG, nSTATUS, CONF_DONE) must be pulled correctly during power-up sequencing to prevent partial configuration. This page synthesizes distributor availability, drop-in speed-grade alternatives (EP1K50TI144-3N, EP1K50TI144-2N), and practical design notes not found in the Altera datasheet alone, enabling direct sourcing and substitution decisions.
EP1K50TL144-2 - ACEX 1K FPGA 50K Gates 144-TQFP | Altera
The Altera (now Intel) EP1K50TL144-2 is a member of the ACEX 1K family of Field Programmable Gate Arrays (FPGAs), delivering up to 50,000 typical gates in a 144-pin TQFP package with industrial-grade temperature rating. Built on a 2.5V core with 0.18 um process technology, the EP1K50TL144-2 provides 360 Logic Array Blocks (LABs), 2,880 logic elements, and 40,960 RAM bits of embedded memory. An FPGA (Field Programmable Gate Array) is a reprogrammable integrated circuit that allows hardware designers to implement custom digital logic through configuration rather than mask-level fabrication. FPGAs belong to the broader category of programmable logic devices (PLDs), sitting alongside CPLDs (Complex PLDs) and SPLDs (Simple PLDs), and serve as the silicon foundation for digital signal processing, glue logic, prototyping, and high-volume parallel hardware. ACEX 1K was Altera's low-cost FPGA line, occupying the space between simple CPLDs and high-density FPGAs like APEX. Key features of the EP1K50TL144-2 include 102 user I/O pins, embedded array blocks (EABs) for dual-port memory implementation, and 2.5V core operation with MultiVolt I/O supporting 2.5V/3.3V/5.0V interfacing. The device also offers in-system programmability via JTAG, allowing rapid prototyping and field upgrades. Architecture-wise, the ACEX 1K family combines a continuous interconnect network (routing across rows and columns) with embedded array blocks for memory and specialized logic. The look-up table (LUT) based logic elements deliver efficient synthesis for state machines, datapaths, and bus interfaces, while EABs efficiently implement RAM, ROM, and DSP functions. Typical applications include DSL modem glue logic, low-cost switches and routers, PCI bridge designs, telecommunications interfaces, and industrial control systems. The 144-pin TQFP package and industrial temperature range also make the EP1K50TL144-2 well suited to legacy telecommunications infrastructure and embedded prototyping. When designing with this device, note that the ACEX 1K family requires configuration via MAX+PLUS II or Quartus software (legacy support required), and the 144-pin TQFP package has limited I/O headroom for high-pin-count designs. Engineers migrating from ACEX 1K should plan for Cyclone or MAX II successors for new designs. This page synthesizes distributor pricing, drop-in alternatives from the same ACEX 1K family, and practical design notes not found in the manufacturer datasheet - useful for engineers maintaining legacy systems.
EP1K50TQ144-1 - ACEX 1K FPGA 50K Gates 144-TQFP | Intel (Altera)
The Intel (formerly Altera) EP1K50TQ144-1 is a member of the ACEX 1K programmable logic device family, providing 50,000 typical gates and 2,880 logic elements in a 144-pin TQFP (Thin Quad Flat Pack) package. Built on a 0.22 µm SRAM-process technology with a 2.5 V core supply, this device delivers up to 250 MHz internal operation and integrates dual-port RAM and a Look-Up Table (LUT)-based logic fabric. The '-1' speed grade denotes the standard-performance timing bin within the ACEX 1K lineup, while 'TQ144' specifies the TQFP-144 package outline. An FPGA (Field Programmable Gate Array) is a semiconductor integrated circuit whose logic function is defined by a user-supplied configuration bitstream rather than at the foundry. FPGAs sit at the top of the programmable logic hierarchy (PLD -> CPLD -> FPGA -> SoC FPGA) and are used to implement custom digital logic, glue logic, state machines, DSP pipelines, and full processor subsystems after PCB fabrication. The ACEX 1K family was Altera's low-cost, 2.5 V entry in the early-2000s FPGA market, targeting glue-logic, communications, and industrial-control applications where ASIC NRE was not justified. Key features of the EP1K50TQ144-1 include 102 maximum user I/O pins, 40,960 typical gates, 2,880 logic elements (LEs), 360 Logic Array Blocks (LABs), embedded dual-port RAM blocks (EABs) totaling 40 Kbits, in-system programmability via IEEE 1149.1 (JTAG) and the Altera EPC4/EPC8/EPC16 enhanced configuration devices, multiVolt I/O supporting 2.5 V / 3.3 V interfaces, and LVTTL/LVCMOS/LVDS/LVDS-compatible signaling. The device operates from a 0 °C to +70 °C commercial temperature range (commercial grade for the -1 speed bin at TQFP-144). Architecturally, the ACEX 1K combines a continuous interconnect network with embedded array blocks (EABs) that implement memory and complex logic functions. Each LE contains a 4-input LUT, a programmable register, and dedicated carry and cascade chains, while each EAB provides up to 4 Kbits of dual-port RAM or ROM. The 0.22 µm process and 2.5 V core reduce power relative to 5 V PLDs of the same era, and the JTAG-based ISP enables board-level reconfiguration without removing the part. Typical applications include low-cost glue logic, communications protocol bridges, industrial control, display controllers, and legacy system refresh where a pin-compatible second-source is required. The TQFP-144 footprint supports hand-soldering and rework, useful for prototypes and low-volume production. When designing with this device, mind the 2.5 V VCCINT supply — a separate VCCIO bank is needed for 3.3 V interfaces, and configuration must use an Altera EPC-series device or a microprocessor-driven passive-serial scheme. The part is mature/legacy; consult Intel's product lifecycle notices for current status before committing new designs. This page synthesizes drop-in TQFP-144 alternates from the ACEX 1K family, current distributor pricing, and practical design notes not found in the original datasheet.