FPGA & CPLD
제품 (6666)
RTAX250S-1LG624V - 250K-Gate Rad-Tolerant FPGA 1.5V | Microchip
The Microchip Technology RTAX250S-1LG624V is a radiation-tolerant, 250,000-equivalent-gate Field Programmable Gate Array (FPGA) with 2816 Configurable Logic Blocks (CLBs) and 4224 logic cells, operating from a 1.5V nominal core supply over a -55C to +125C military/space temperature range, housed in a 624-column ceramic column grid array (CGA624/LG624) package with leaded (V) column finish. A radiation-tolerant FPGA is a programmable logic device qualified for space-flight environments, where exposure to heavy ions and protons causes single-event upsets (SEUs) in commercial silicon. The RTAX-S family sits at the top of the programmable logic hierarchy for spacecraft: FPGA -> radiation-tolerant FPGA -> space electronics. Unlike SRAM-based FPGAs, the RTAX-S family uses antifuse programmability, giving a true single-chip form factor, live-at-power-up operation, and inherent resistance to configuration upset. Key features include 250K equivalent gates, 4224 logic cells, low static power consumption, and single-chip operation without external boot PROM. The -1 speed grade covers standard space-flight performance, and the V-suffix leaded ceramic column package supports reliable solder attachment on aerospace PCBs. Architecturally, the RTAX250S builds on Actel's Axcelerator fabric with Sea-of-Modules logic, embedded SRAM blocks, and clock-management resources, providing deterministic timing for flight software-defined logic. Designs are developed with Microchip (Microsemi/Lattice-style) Libero design software and can be prototyped on commercial Axcelerator devices per application note AC170. Typical applications include satellite payload processing, spacecraft bus control, launch-vehicle avionics, and instrumentation for deep-space missions, where SEU tolerance and live-at-power-up behavior are mandatory. Design consideration: because the LG624 ceramic package uses columns rather than balls, follow the manufacturer's reflow profile for column grid arrays and verify board-level outgassing requirements. This page synthesizes distributor availability, drop-in alternatives, and engineering design notes not consolidated in the manufacturer datasheet.
RTAX250S-CG624B - 250K Gate Rad-Tolerant FPGA CCGA-624 | Microchip
The Microchip Technology RTAX250S-CG624B is a radiation-tolerant FPGA from the RTAX-S family offering 250,000 equivalent system gates, 2,816 logic cells (CLBs), and up to 649 MHz system performance in a 624-pin ceramic column grid array (CCGA) package, fabricated on a 0.15 um process with a 1.5 V core supply. A radiation-tolerant FPGA is a field-programmable gate array engineered to survive the heavy-ion and proton environments encountered in Earth-orbiting and deep-space missions. Within the space-grade programmable logic hierarchy, the RTAX-S family sits alongside one-time-programmable antifuse architectures, providing a true single-chip, live-at-power-up solution that does not require external configuration devices such as flash or PROM memories. Key features include SEU-hardened flip-flops that eliminate the need for triple-module redundancy (TMR) in many designs, immunity to single-event upsets to a specified LET threshold with SEU rates below 10^-10 errors per bit-day, embedded SRAM blocks with built-in FIFO control logic, segmentable clock structures, and chip-wide routing highways. The CCGA-624 ceramic package provides the mechanical robustness and thermal performance required for launch vibration and vacuum operation. The architecture is derived from the commercial Axcelerator family, giving designers proven logic fabric with a speed grade option (the -1 grade is approximately 15% faster than standard) and operating temperature of -55C to +125C. CMOS 0.15 um technology delivers low static power, an important consideration for power-budget-limited spacecraft buses. Typical applications include payload data processing, spacecraft bus controllers, telemetry and telecommand interfaces, and sensor front-end glue logic on LEO, GEO, and interplanetary missions where radiation tolerance and live-at-power-up behavior are mission-critical. A key design consideration is that RTAX-S antifuse devices are one-time programmable: programming is final, so designers prototype on commercial Axcelerator parts or Microchip extender boards (per application note AC170) before committing flight hardware. This page adds value beyond the manufacturer datasheet by consolidating drop-in package-compatible alternatives, cross-reference options, and pricing tiers for supply-chain planning.
RTAX250S-CG624E - 250K-Gate Rad-Tolerant FPGA | Microchip
The Microchip Technology RTAX250S-CG624E is a 250,000-system-gate radiation-tolerant antifuse FPGA from the RTAX-S family, providing 2816 logic cells, a maximum toggle rate of 649 MHz, and single-event-upset (SEU)-hardened registers in a 624-ball ceramic column grid array (CCGA-624) package operating from -55C to +125C. A radiation-tolerant FPGA is a field-programmable gate array engineered to survive the ionizing radiation environment of space, where conventional commercial silicon suffers single-event upsets (SEUs), latch-up, and total ionizing dose (TID) degradation. Within the power and processing hierarchy of a spacecraft avionics system, the RTAX-S family sits at the payload and platform logic layer, replacing multiple rad-hard ASICs and discrete glue logic with a single-chip, live-at-power-up programmable device. Key differentiating features include SEU-hardened flip-flops that eliminate the need for triple modular redundancy (TMR) in many designs, immunity to single-event upsets up to a specified linear energy transfer threshold, and SEU rates below 10-10 errors per bit-day. The one-time-programmable antifuse fabric gives the device true single-chip form factor, live-at-power-up operation, and low static power consumption - critical for orbit-limited spacecraft power budgets. Core operation is at 1.5V on 0.15 um CMOS technology. The RTAX250S architecture provides CLB combinatorial delays as low as 0.930 ns at the -1 speed grade, supporting system clocks in the hundreds of megahertz. Design flow prototyping is enabled by Microchip application note AC170, which maps RTAX-S designs onto commercial Axcelerator devices using extender circuit boards; Aldec ACT-H3K-CG624 adaptor boards also emulate the CG624 footprint using ProASIC3E flash technology for reprogrammable validation before committing antifuse programming. Typical applications include satellite payload data processing, spacecraft command and data handling (C&DH) units, telemetry and telecommand interfaces, bus avionics, and instrument control for low-Earth-orbit and deep-space missions. The 624-ball CCGA package supplies the high I/O count required for wide parallel data buses and memory interfaces. Designers should note that antifuse FPGAs are one-time programmable: the design must be fully verified via prototyping hardware or simulation before the flight device is programmed. Also confirm that the CG624 column-grid-array board stack-up and reflow profile follow Microchip ceramic-package assembly guidance. This page synthesizes verified distributor data, same-family drop-in alternatives, datasheet access links, and practical design notes not found together on the manufacturer product page, giving space-systems engineers and procurement teams a single citable reference for the RTAX250S-CG624E.
RTAX250S-CG624V - 250K-Gate Rad-Tolerant FPGA | Microchip
The Microchip Technology (Actel/Microsemi) RTAX250S-CG624V is a radiation-tolerant FPGA from the RTAX-S family with 250,000 equivalent system gates, 2816 configurable logic blocks (4224 logic cells), and up to 649 MHz system performance, housed in a 624-terminal ceramic column grid array (CCGA) package. A radiation-tolerant FPGA is a field-programmable gate array engineered to survive the single-event upsets (SEU) and total ionizing dose (TID) effects of space radiation environments. Within the power-management hierarchy of spaceflight electronics, it sits above commercial FPGAs and below fully radiation-hardened ASICs, offering a single-chip, live-at-power-up fabric based on antifuse technology that does not require configuration devices. Key features of the RTAX250S include SEU-hardened registers that eliminate the need for triple module redundancy (TMR) in many designs, embedded SRAM blocks with built-in FIFO control logic, segmentable clock resources, chip-wide highway routing, and dedicated carry logic for arithmetic. The 0.15 um CMOS process with a nominal 1.5 V core supply keeps static and dynamic power consumption low, an important consideration for solar- and battery-powered spacecraft. Architecturally, the RTAX-S family is derived from the commercial Axcelerator architecture, combining prototyping on footprint-compatible ProASIC/AX adaptors with flight-grade antifuse fabric. The CG624 ceramic column grid array provides mechanical reliability through column rather than ball interconnect, reducing solder-joint fatigue under thermal cycling and launch vibration. Typical applications include satellite command and data handling, telemetry encoders, payload data processing, bus controllers, and radiation-tolerant glue logic replacing multiple ASICs in low- and mid-Earth-orbit spacecraft. Design consideration: verify the flight vs. prototype flow early - the manufacturer recommends prototyping on footprint-compatible adaptor boards and migrating the EDIF netlist with a pinout converter to the RTAX-S device. This page synthesizes verified distributor data, drop-in package-compatible alternatives, and practical design guidance not consolidated in the manufacturer datasheet.
RTAX250S-CQ208PROTO - Rad-Tolerant FPGA 250kG CQ208 | Microchip
The Microchip Technology RTAX250S-CQ208PROTO is a radiation-tolerant antifuse FPGA prototype device from the RTAX-S/SL family, offering 250,000 equivalent system gates, 2,816 CLBs, and 4,224 logic cells in a 208-pin ceramic CQ208 package with a core supply of 1.5V nominal (1.425V to 1.575V). A radiation-tolerant FPGA is a field-programmable gate array engineered to survive the total ionizing dose (TID) and single-event effects found in spaceflight radiation environments. Within the semiconductor hierarchy, the RTAX250S-CQ208PROTO sits in the radiation-tolerant FPGA category, descended from the commercial Axcelerator family and positioned above standard commercial FPGAs in reliability for orbital missions. Key features include the PROTO designation, which means this unit is intended for prototyping hardware flights before committing to flight-grade silicon. The CQ208 ceramic package enables footprint-compatible migration using the Aldec ACT-H600-CQ208 adaptor, which supports RTAX250S-CQ208, RTAX250SL-CQ208, AX250S-CQ208, and AX250SL-CQ208 devices. Built-in FIFO control logic on embedded SRAM, segmentable clocks, and chip-wide highway routing add system-level flexibility. The RTAX-S/SL architecture is based on the proven Axcelerator CMOS fabric, with embedded SRAM blocks, high-performance routing, and antifuse one-time-programmable configuration delivering true single-chip form factor and live-at-power-up operation without external configuration devices. Per Microchip application note AC170, prototyping is performed using Microsemi Libero SoC software, which converts the RTAX-S/SL design to a compatible Axcelerator device and package; the reverse flow is not permitted, so pin assignment, place-and-route, timing verification, and simulation must be done on the RTAX-S/SL device itself. Typical applications include satellite payload logic, spacecraft bus control, orbital instrument interfaces, and launch vehicle avionics, where radiation tolerance, low power, and single-chip reliability are decisive. Designers typically prototype with this PROTO unit and the Axcelerator companion before ordering flight RTAX250S silicon. A key design consideration: verify timing and pinout in Libero SoC against the RTAX250S-CQ208 target, because the Axcelerator prototype conversion is one-directional. This page synthesizes verified distributor listings, the official Microchip RTAX-S/SL datasheet (ds2169), and the Aldec adaptor compatibility matrix, providing drop-in alternative guidance and prototyping-flow design notes not consolidated on the manufacturer product page.
RTAX250S-LG624EV - 250K Gate Rad-Tolerant FPGA | Microchip
The Microchip Technology RTAX250S-LG624EV is a radiation-tolerant FPGA from the RTAX-S family offering 250,000 equivalent gates, 4224 logic cells, and 2816 configurable logic blocks (CLBs) in a 624-pin LGA surface-mount package. It operates from a nominal 1.5V core supply, supports system performance up to 649 MHz, and is fabricated on a 0.15 um CMOS anti-fuse process qualified for space-flight environments. A radiation-tolerant FPGA is a field-programmable gate array engineered to survive the total ionizing dose (TID) and single-event effects (SEE) found in orbital and deep-space radiation environments. Within the power-management and processing hierarchy of a spacecraft avionics system, the FPGA sits between a radiation-hardened microcontroller and application-specific ASICs, providing flexible glue logic, bus interfacing, and payload processing. The RTAX-S family is the successor to the Actel Axcelerator-based architecture, now manufactured and supported by Microchip (formerly Microsemi). Key features include true single-chip operation with live-at-power-up functionality enabled by the anti-fuse interconnect, which requires no configuration PROM and eliminates configuration-time vulnerability to radiation-induced SEUs in configuration memory. The device integrates embedded SRAM blocks, clock management circuitry, and up to 248 user I/Os in the 624-pin package, with industrial temperature capability spanning -55C to +125C in the EV-grade flow. Architecturally, the RTAX250S combines Sea-of-Modules logic tiles with VersaTiles and dedicated embedded memory blocks, delivering high routing efficiency and deterministic timing. The 0.15 um anti-fuse process provides low static power and inherent immunity to configuration upsets, a decisive advantage over SRAM-based FPGAs in space applications. Typical applications include satellite attitude-control and payload data processing, spaceflight bus interfaces such as Mil-Std-1553 and SpaceWire bridges, and telemetry/command (TM/TC) systems where single-chip, live-at-power-up logic is mandatory. Design consideration: because RTAX-S devices are one-time programmable, complete design verification using the Microchip Libero design flow and, where possible, Aldec flash-based prototyping adaptor boards is strongly recommended before committing hardware. This page synthesizes verified distributor data, drop-in packaging variants, and design guidance not consolidated in the manufacturer datasheet. Pricing is quote-based as of 2026-09-02.
RTAX250S-LG624V - 250K-Gate Rad-Tolerant FPGA | Microchip
The Microchip Technology RTAX250S-LG624V (originally Actel/Microsemi) is a radiation-tolerant FPGA from the RTAX-S family with 250,000 equivalent gates, 4,224 logic cells, and 2,816 Configurable Logic Blocks (CLBs), housed in a 624-pin LGA package (LG624) with a 1.5V nominal core supply and performance up to 649 MHz on a 0.15 um CMOS process. A radiation-tolerant FPGA is a field-programmable gate array engineered to survive and operate in the space-flight radiation environment, where high-energy particles cause single-event effects (SEE) and total ionizing dose (TID) degradation. Within the power-management hierarchy of spacecraft electronics, the RTAX-S family sits alongside radiation-hardened ASICs as the FPGA of choice for space designers, offering true single-chip operation and live-at-power-up functionality without the configuration-pumping of SRAM FPGAs. Key features include 250K gate density with 4,224 logic cells and 248 user inputs/outputs, single-chip flip-chip packaging, and a -55C to +125C military-grade operating temperature range. The 'V' grade suffix denotes the qualified space-flow variant. The 649 MHz toggle capability and 0.15 um antifuse-based CMOS technology combine low static power with high logic throughput, making the device suitable for mission-critical signal processing and control paths. Architecturally, the RTAX250S uses a Sea-of-Modules structure with combinable logic modules, embedded SRAM blocks, and clock-management resources, retaining its configuration in non-volatile antifuse interconnect so the device is functional immediately at power-up - a significant advantage for spacecraft that cannot afford a separate configuration device or boot sequence. Typical applications include satellite telemetry/command subsystems, payload data processing, spacecraft bus control, and radiation-environment instrumentation where SEU resilience and single-chip integration are mandatory. Designers should budget I/O standards and supply decoupling for the 1.5V core rail, and use the Microchip Libero SoC flow with the RTAX-S design libraries; prototyping can be done on commercial Axcelerator devices using Microchip extender boards per application note AC170. This page synthesizes distributor data, same-family drop-in package-compatible variants, and design guidance not consolidated in the manufacturer datasheet.
RTAX250SL-1CQ208PROTO - 250k-Gate Rad-Tolerant FPGA | Microchip
The Microchip Technology (Actel/Microsemi) RTAX250SL-1CQ208PROTO is a radiation-tolerant, antifuse-based field-programmable gate array (FPGA) delivering 250,000 equivalent system gates, 4,224 logic cells, and 2,816 configurable logic blocks (CLBs) in a 208-pin ceramic quad flat pack (CQFP, CQ208). The -1 speed grade offers a minimum combinatorial CLB delay of 0.93 ns maximum, and the PROTO suffix denotes the prototyping-grade screening flow used for early space-flight design validation. A radiation-tolerant FPGA is a programmable logic device qualified to survive the ionizing radiation environment of space, where conventional commercial FPGAs would suffer configuration upsets, latch-up, or total dose degradation. The RTAX-S/SL family sits within Microchip's broader spaceflight portfolio, above commercial FPGAs and below fully radiation-hardened devices, and is derived from the commercial Axcelerator family architecture. Key features include live-at-power-up operation thanks to the antifuse programming technology (no external boot configuration device is needed, a true single-chip solution), embedded SRAM blocks with built-in FIFO control logic, segmentable chip-wide clocks, and the SL variant's enhanced total-ionizing-dose (TID) tolerance versus the standard RTAX-S parts. Low static power consumption is a hallmark of the antifuse fabric, which matters for power-limited satellite buses. Technically, the device uses a 0.15 um CMOS antifuse process. The VersaTile-based CLB fabric supports both combinatorial and sequential logic with predictable interconnect delays, simplifying timing closure for mission-critical designs. Embedded SRAM modules can be configured as FIFOs, dual-port memories, or single-port memories with hard FIFO control logic, offloading soft-logic resource consumption. Typical applications include satellite payload processing, spacecraft telemetry and command interfaces, radiation-environment sensor interfaces, and launch-vehicle avionics, where one-time-programmable (OTP) antifuse immunity to configuration upsets is a decisive advantage over SRAM-based FPGAs. A key design consideration: the PROTO-grade device is intended for functional prototyping only; production flight hardware should move to the corresponding flight-screened orderable, since PROTO units do not carry the full space qualification flow. This page synthesizes distributor availability data, drop-in alternatives, and practical design guidance not found in the manufacturer datasheet, making it a one-stop reference for RTAX250SL-1CQ208PROTO selection and procurement decisions.
RTAX250SL-1CQ352V - 250K-Gate Rad-Tolerant FPGA | Microchip
The Microchip Technology RTAX250SL-1CQ352V is a 250,000-equivalent-gate radiation-tolerant FPGA from the RTAX-S/SL family, offering 2816 configurable logic blocks (CLBs) organized into 4224 logic cells, 198 user inputs and 198 user outputs, housed in a 352-terminal ceramic CQFP (CQ352) package. Built on 0.15 um CMOS technology at a 1.5V core supply, it is intended for space-flight systems. A radiation-tolerant FPGA is a field-programmable gate array engineered to survive the heavy-ion and proton environments encountered in Earth-orbiting and deep-space missions. Within the power-management hierarchy of avionics, FPGAs such as the RTAX-S/SL sit at the top of the programmable-logic taxonomy (FPGA > radiation-tolerant FPGA > space-grade programmable logic IC), providing single-chip glueless integration where standard commercial FPGAs would suffer single-event upsets. Key features include the anti-fuse, live-at-power-up architecture that eliminates the need for external boot configuration devices, embedded SRAM blocks with built-in FIFO control logic, segmentable clock resources, and chip-wide highway routing. The SL variant adds enhanced total-ionizing-dose (TID) performance relative to the base RTAX-S devices, supporting long-duration missions. The 649 MHz system performance figure cited for the family reflects the speed of the underlying Axcelerator-derived fabric. Technically, the device is based on the commercial Axcelerator fabric from Microsemi (now Microchip), using a sea-of-modules architecture with clock-conditioning circuitry and I/O banks supporting multiple single-ended and differential standards. Configuration data is loaded once; the anti-fuse interconnect is inherently single-event-upset immune, a decisive advantage over SRAM-based FPGAs in orbit. Typical applications include satellite payload data processing, spacecraft command and telemetry interfaces, launch-vehicle avionics, and radiation-hardened image processing pipelines where deterministic, single-chip logic is required from the instant power is applied. A key design consideration is screening level: the -V suffix designates a specific qualification/screening flow for the ceramic CQFP package, so PCB footprints and procurement flows must match the exact suffix. This page synthesizes distributor listings, drop-in family alternatives, and design guidance not found in the manufacturer datasheet, with pricing and stock refreshed as of 2026-09-02.
RTAX250SL-1LG624B - 250K Rad-Tolerant FPGA, 649MHz | Microchip
The Microchip Technology RTAX250SL-1LG624B is a radiation-tolerant FPGA from the RTAX-SL family offering 250,000 equivalent system gates, 2816 logic cells (4224 logic cells per distributor data), and a maximum clock frequency of 649 MHz, built on a 0.15 um CMOS process with a 1.5V core voltage and housed in a 624-pin ceramic LGA package supplied in a box. A radiation-tolerant FPGA is a field-programmable gate array designed to survive the radiation environment of space and high-altitude flight, where single-event effects (SEE) and total ionizing dose (TID) would upset standard commercial devices. The RTAX-SL family sits within Microchip's (formerly Actel/Microsemi) space flight portfolio, forming the programmable logic tier of a satellite avionics hierarchy that includes antifuse RTAX-S devices, flash-based ProASIC3L parts, and radiation-hardened RTG4-generation FPGAs. Key features of this device include the SL low-power variant of the RTAX architecture, embedded SRAM blocks with built-in FIFO control logic, segmentable clock conditioning circuitry, chip-wide highway routing for low-skew global signaling, and dedicated carry logic for arithmetic functions. These system-level features originate from Microsemi's commercial AXCELERATOR-style fabric, repackaged for space-grade reliability. Architecturally, the RTAX-SL fabric consists of clustered logic modules (C-cells and R-cells) interconnected through a rich hierarchical routing network, with VersaTiles supporting both combinational and sequential implementations. The -1 speed grade denotes the fastest commercial speed bin available for this die, and the B suffix denotes the radiation-tolerant flow with data derived from the same 0.15 um metallization used across the family. Typical applications include satellite payload data processing, spacecraft telemetry and command (TM/TC) interfaces, orbit-control and attitude-control electronics, and space-based sensor interfacing, where single-chip form factor, live-at-power-up operation, and low power consumption matter more than raw gate density. A key design consideration is prototyping: the ceramic LGA-624 footprint cannot be reflowed on standard FR-4 prototypes easily, so Microchip provides footprint-compatible adaptor boards and an EDIF netlist/pinout conversion methodology for prototyping with RTAX-S/SL devices. This page synthesizes distributor data, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.
RTAX250SL-1LG624E - 250K Gate Rad-Tolerant FPGA | Microchip
The Microchip (Actel/Microsemi) RTAX250SL-1LG624E is a radiation-tolerant FPGA from the RTAX-SL family with 250,000 equivalent system gates, 2816 Configurable Logic Blocks (4224 logic cells), and up to 649 MHz system performance, housed in a 624-pin ceramic LGA package (LG624) qualified for operation from -55C to +125C. A radiation-tolerant FPGA is a programmable logic device engineered to survive the ionizing radiation environments of space flight, including total ionizing dose (TID), single-event upset (SEU), and single-event latchup (SEL). Within the power-management hierarchy of spacecraft electronics, the RTAX-S/SL family sits alongside rad-hard ASICs and COTS FPGAs as the programmable logic backbone of satellites, rovers, and deep-space probes. The RTAX-SL architecture is based on the commercial Axcelerator family, combining a sea-of-modules 0.15 um CMOS fabric with embedded SRAM blocks featuring built-in FIFO control logic. Key features include the antifuse-style one-time-programmable configuration that is live at power-up - eliminating external configuration memory and boot-time vulnerability - plus segmentable clock circuitry, chip-wide routable reset, and dedicated boundary scan testability. The SL variant is optimized for low static power at 1.5V core supply, a decisive advantage in solar- and battery-powered spacecraft. Technically, the device integrates 2816 CLBs organized as combinational and sequential modules, embedded SRAM FIFOs, and a hierarchical routing fabric delivering 649 MHz toggle-limited performance on the 0.15 um process. The ceramic LGA (LG624) package provides hermetic protection suitable for flight units, and the -1 speed grade denotes the fastest commercial bin within this density. Typical applications include spacecraft on-board data handling, payload processing, telemetry and telecommand interfaces, bus controllers, and sensor front-end preprocessing on Earth-observation and communications satellites. Design consideration: RTAX-SL devices are one-time programmable; the complete design must be verified in Libero SoC and preferably prototyped on the equivalent PROTO or commercial Axcelerator part before committing flight units. This page synthesizes distributor sourcing data, drop-in alternatives, and practical design notes not consolidated in the manufacturer datasheet.
RTAX250SL-1LG624EV - 250K-Gate Rad-Tolerant FPGA | Microchip
The Microchip Technology (Actel/Microsemi) RTAX250SL-1LG624EV is a radiation-tolerant, antifuse-based FPGA from the RTAX-SL family with 250,000 equivalent system gates, 2816 logic cells (4224-cell CMOS architecture), a toggle rate up to 649 MHz, and a 0.15 um antifuse process, operating at 1.5V core supply in a 624-pin ceramic LGA (LG624) package. A radiation-tolerant FPGA is a field-programmable gate array qualified for spaceflight environments, where high-energy particles would upset configuration memory in SRAM-based FPGAs. The RTAX-SL family sits within the broader hierarchy: FPGA -> radiation-tolerant FPGA -> space-grade programmable logic -> spacecraft digital electronics. Because the RTAX-SL uses non-volatile antifuse interconnect, its configuration cannot be disturbed by single-event upsets, and the device is live at power-up with no external boot PROM required. Key features include 2816 CLB-based logic cells with 250K equivalent gates, embedded SRAM blocks with built-in FIFO control logic, segmentable clock resources and chip-wide highway routing, and single-chip operation that eliminates the configuration device needed by reprogrammable space FPGAs. The -1 speed grade and LG624 package maximize I/O and logic access for high-gate-count payloads. Architecturally, RTAX-SL is derived from the commercial Axcelerator family, adding total-ionizing-dose-hardened processing and design rules. The 0.15 um CMOS antifuse technology provides low static power and strong SEU immunity for on-board data handling, telemetry, and payload processing chains. Typical applications include satellite on-board computers, spacecraft payload controllers, telecommand/telemetry processing, and radiation-tolerant glue logic replacing multiple ASIC or discrete functions. The EV ordering suffix denotes a space-flight qualification flow intended for final flight hardware. Design consideration: RTAX-SL devices are one-time programmable. Use the footprint-compatible RTAX prototyping flow (adaptor boards and EDIF netlist conversion) with the RTAX250SL-1LG624PROTO companion part before committing flight units. This page synthesizes drop-in same-family alternatives, prototyping-flow guidance, and sourcing context not consolidated in the manufacturer datasheet.
RTAX250SL-1LG624V - 250K-Gate Rad-Tolerant FPGA | Microchip
The Microchip Technology RTAX250SL-1LG624V is a radiation-tolerant FPGA from the RTAX-S/SL family, delivering 250,000 equivalent system gates with 2816 CLBs and 4224 logic cells in a 624-terminal ceramic CGA (LG624) package. Built on a CMOS antifuse architecture derived from the commercial Axcelerator family, it offers live-at-power-up operation and a true single-chip form factor for space-flight systems. A radiation-tolerant FPGA is a field-programmable gate array qualified for the space environment, where cosmic rays and trapped protons cause single-event effects and total ionizing dose degradation. Within the power hierarchy, the RTAX-S/SL family sits above commercial FPGAs and below fully rad-hard ASICs, giving satellite and spacecraft designers programmable flexibility with space-grade reliability. Unlike SRAM-based FPGAs, its antifuse configuration is permanent and immune to configuration upsets. Key features include embedded SRAM blocks with built-in FIFO control logic, segmentable clock resources, chip-wide highway routing, and dedicated carry logic for arithmetic. The SL variant offers enhanced total-dose performance relative to the base RTAX250S. The -1 speed grade balances timing performance with power, and the V suffix denotes a specific screening flow. Technically, the device operates at a nominal 1.5V core supply (as specified for the RTAX250S family) with operating temperature from -55C to +125C, supporting harsh thermal environments in orbit. Timing performance reaches several hundred megahertz in system-level paths, enabling onboard data processing, telemetry formatting, and protocol bridging on a single chip. Typical applications include satellite payload data processing, spacecraft command and telemetry interfaces, sensor front-end preprocessing, and bus avionics where low power, single-chip integration, and radiation tolerance are mandatory design drivers. A key design consideration: antifuse FPGAs are one-time programmable, so design verification must rely on simulation and the dedicated prototype devices (PROTO units share timing attributes with flight units) before committing to flight hardware. This page synthesizes verified distributor data, family-level alternatives, and design guidance not found in the manufacturer datasheet alone.
RTAX250SL-CG624B - 250K Rad-Tolerant FPGA 624-CCGA | Microchip
The Microchip Technology (Actel/Microsemi) RTAX250SL-CG624B is a radiation-tolerant FPGA from the RTAX-SL family offering 250,000 equivalent system gates organized as 2816 Configurable Logic Blocks (CLBs), a maximum clock frequency of 649 MHz, and a 0.15 um process with 1.5 V core operation, housed in a 624-ball ceramic column grid array (CCGA) package. A radiation-tolerant FPGA is a field-programmable gate array engineered to survive and operate reliably in the space radiation environment, where energetic particles cause single-event effects (SEEs) and total ionizing dose (TID) degradation. Within the space electronics hierarchy, the RTAX-SL family sits alongside other radiation-hardened/tolerant programmable logic solutions and is based on the commercial Axcelerator architecture from Microsemi (now Microchip Technology). Key features include true single-chip operation (no external configuration PROM required at power-up thanks to antifuse technology), live-at-power-up behavior, embedded SRAM blocks with built-in FIFO control logic, segmentable clock resources, chip-wide highway routing, and dedicated carry logic for arithmetic. The antifuse interconnect is inherently immune to configuration upsets, a decisive advantage over SRAM-based FPGAs in orbit. Architecturally, the RTAX-SL is derived from the Axcelerator family, with 0.15 um antifuse technology providing low static power and configuration immutability. The device achieves a maximum combinatorial CLB delay of 0.930 ns, enabling pipelined DSP and telemetry processing at up to 649 MHz. Typical applications include satellite on-board data handling, spacecraft command and telemetry, payload signal processing, and radiation-exposed avionics where configuration-upset immunity is mandatory. Design consideration: the CCGA624 package requires controlled-impedance, column-grid-array-capable PCB assembly and X-ray inspection; plan board layout early. This page synthesizes distributor inventory data, drop-in family alternatives, and practical design guidance not found in the manufacturer datasheet alone.
RTAX250SL-CG624E - 250K-Gate Rad-Tolerant FPGA | Microchip
The Microchip Technology (Actel/Microsemi) RTAX250SL-CG624E is a radiation-tolerant FPGA from the RTAX-SL family with 250,000 equivalent system gates, 2816 logic cells (CLBs), and a 649 MHz system performance capability, fabricated on a 0.15 um CMOS process and housed in a 624-pin ceramic column grid array (CCGA-624) package with extended temperature operation from -55C to +125C and a 1.5V core supply. A radiation-tolerant FPGA is a field-programmable gate array qualified for the space-flight environment, where single-event upsets (SEUs) caused by cosmic rays and trapped-particle radiation can flip configuration or user registers. Within the power hierarchy, the RTAX250SL sits in the space-grade programmable logic category alongside Microchip's RTAX-S and RTAX-DSP families, offering densities up to four million system gates. Key features include SEU-hardened flip-flops that eliminate the need for Triple Module Redundancy (TMR), SEU immunity up to a specified LET threshold with an SEU error rate below 10-10 errors per bit-day, embedded SRAM blocks with built-in FIFO control logic, segmentable clocks, chip-wide highway routing, and carry logic for arithmetic functions. The device is live-at-power-up thanks to its flash-based programming model used during prototyping flows, providing a true single-chip form factor for space systems. Technically, the RTAX-SL architecture derives from the commercial Axcelerator family, using a sea-of-modules fabric with registered logic modules, combinatorial delay as low as 0.93 ns in the -1 speed grade, and 1.5V (plus/minus 0.15V) core operation for low power consumption, which is critical for orbital platforms with limited solar budget. Typical applications include satellite payload data processing, spacecraft bus control and telemetry, sensor interface and image preprocessing on Earth-observation platforms, and radiation-exposed avionics in deep-space missions. Design consideration: use the Microchip Libero SoC design flow with the manufacturer's SEU mitigation guidelines, and follow the application note Prototyping for RTAX-S and RTAX-SL Devices, which uses a footprint-compatible adaptor board with an EDIF netlist and pinout convertor for easy migration from prototype to flight device. This page synthesizes verified distributor data, same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
RTAX250SL-CG624PROTO - Rad-Tolerant FPGA 250K Gates | Actel
The Actel (now Microchip Technology) RTAX250SL-CG624PROTO is a radiation-tolerant FPGA from the RTAX-SL family offering 250,000 equivalent system gates, 2,816 logic cells (4,224 logic elements per Microchip USA data), and 649 MHz system performance in a 624-pin CCGA (Ceramic Column Grid Array) package. The PROTO suffix identifies the prototyping version of the device, intended for pre-flight design verification and engineering development of space-flight systems. Operating from a 1.5V core supply on 0.15 um CMOS antifuse technology, it is targeted at space-based applications requiring low power, single-chip form factor, and live-at-power-up operation. A radiation-tolerant FPGA is a field-programmable gate array engineered to survive the total ionizing dose (TID), latch-up, and single-event effects found in orbital and deep-space radiation environments. Within the hierarchy of programmable logic (FPGA -> programmable logic device -> digital IC -> semiconductor), radiation-tolerant FPGAs occupy the high-reliability tier used by satellite payloads, launch vehicles, and spacecraft avionics. Key features include 250K system gates, embedded SRAM blocks with built-in FIFO control logic, segmentable clocking resources, and chip-wide highway routing inherited from the commercial Axcelerator family. The antifuse architecture is one-time programmable, providing live-at-power-up security and immunity to configuration upset. Technically, the RTAX-SL family leverages the 0.15 um antifuse CMOS process to achieve 649 MHz toggle-rate-class performance while maintaining low static power. Densities across the family reach up to four million system gates, enabling single-chip integration of complex space-flight logic. Typical applications include satellite payload data processing, spacecraft bus control, telemetry and telecommand interfaces, and prototyping for RTAX-S/SL flight designs. Design consideration: use the Microsemi/Aldec flash-based ProASIC3E prototyping adaptor flow (e.g., ACT-H3K-CG624) to validate designs before committing to one-time-programmable flight parts. This page synthesizes distributor data, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
RTAX250SL-LG624V - 250K-Gate Rad-Tolerant FPGA | Microchip
The Microchip Technology (Actel/Microsemi) RTAX250SL-LG624V is a 250,000-gate radiation-tolerant FPGA with 2816 CLBs, 4224 logic cells, and 248 user I/O, housed in a 624-pin LGA ceramic column package (LG624) with the V (space-flight qualification level) grade suffix. A radiation-tolerant FPGA is a field-programmable gate array engineered to survive the radiation environment of space, where total ionizing dose (TID), single-event latchup (SEL), and single-event upset (SEU) would disable a commercial device. Within the power hierarchy of semiconductors, the RTAX250SL sits in the programmable logic category - FPGA -> programmable logic IC -> digital IC - and is the flight-proven choice for space-flight payloads. Key features include anti-fuse one-time-programmable configuration that is live at power-up with no configuration memory to upset, 250,000 equivalent system gates built on a 0.15 um CMOS process, embedded SRAM blocks with built-in FIFO control logic, segmentable clock resources, chip-wide highway routing, and carry logic for arithmetic functions. The RTAX-SL variant adds radiation-hardened SEU mitigation for the fabric. Architecturally, the RTAX-S/SL family is based on the commercial Axcelerator architecture, giving system designers a high-performance logic fabric with proven space heritage. Unlike SRAM-based FPGAs from Xilinx or Intel/Altera, the anti-fuse technology provides inherent immunity to configuration upsets, making a single chip sufficient for many missions without external configuration devices. Typical applications include satellite payload data processing, spacecraft bus control, telemetry and telecommand interfaces, and sensor data formatting in low-Earth-orbit and deep-space missions. Design consideration: as a one-time-programmable anti-fuse device, all functional verification must be completed in prototype units before flight-part programming; the same package and timing apply to PROTO and flight grades. This page synthesizes verified distributor data, drop-in family alternatives, pricing tiers, and practical design notes not found in the manufacturer datasheet.
RTAX4000D-1CQ352E - 4M-Gate Rad-Tolerant FPGA | Microchip
The Microchip Technology RTAX4000D-1CQ352E is a radiation-tolerant FPGA from the RTAX-DSP family delivering 4,000,000 equivalent system gates organized as 36,960 configurable logic blocks (CLBs), fabricated in 0.15 um CMOS and housed in a 352-pin ceramic CQFP (CQ352) package rated for the extended (E) temperature range. A radiation-tolerant FPGA is a field-programmable gate array engineered to survive the ionizing radiation environments of Earth-orbiting and deep-space missions, where standard commercial FPGAs would suffer single-event upsets (SEUs) and total ionizing dose (TID) degradation. Within the space-product hierarchy, the RTAX-DSP family sits among antifuse-based, live-at-power-up radiation-tolerant devices under the broader Microchip (formerly Actel/Microsemi) space FPGA portfolio. Key features include a 4M-gate density suitable for complex on-board data processing, embedded SRAM blocks with built-in FIFO control logic, segmentable chip-wide clock routing highways, and single-chip operation with no external configuration device required. The antifuse architecture is inherently immune to configuration upsets, a decisive advantage over SRAM-based FPGAs in orbit. Technically, the device is derived from the commercial Axcelerator architecture and adds radiation tolerance through process and design hardening. Core operation at 1.5 V keeps dynamic power low, an important consideration for solar- and battery-powered spacecraft payloads. DSP-oriented resources support on-orbit image processing, software-defined radio, and telemetry encoding. Typical applications include satellite payload processing, launch-vehicle avionics, and deep-space probe instrument control, where low power, live-at-power-up behavior, and SEU robustness are mission-critical. Design consideration: verify radiation report data (TID and SEE performance) against the specific mission orbit and validate the timing model for the -1 speed grade before design freeze. This page synthesizes distributor availability data, drop-in alternatives, and space-flight design guidance not consolidated on the manufacturer datasheet.
RTAX4000D-CQ352B - 4M-Gate Rad-Tolerant FPGA CQFP-352 | Microchip
The Microchip Technology RTAX4000D-CQ352B is a radiation-tolerant FPGA from the RTAX-DSP family with 4,000,000 equivalent gates, 36,960 configurable logic blocks (CLBs), and 55,440 logic cells, manufactured on a 0.15 um process and operating from a nominal 1.5V core supply in a 352-pin ceramic CQFP (CQFP-352) package. A radiation-tolerant FPGA is a field-programmable gate array designed to survive the ionizing radiation environment of space flight. Unlike commercial FPGAs, radiation-tolerant parts combine radiation-hardened-by-design libraries with antifuse-based one-time-programmable interconnect, so they are immune to configuration upsets (SEU in configuration memory) and are live at power-up with no external configuration flash. Within the power-management-free space electronics hierarchy, they sit alongside rad-hard ASICs and processors as the primary digital glue logic, signal processing, and bus interface fabric for satellites and probes. Key features of the RTAX4000D include single-chip form factor (configuration is held in antifuse fabric, not external memory), low-power CMOS operation at 1.5V, live-at-power-up behavior critical for launcher and satellite power sequencing, and DSP-oriented multiply-accumulate blocks from the RTAX-DSP family. The D variant adds these DSP functions to the RTAX-S/SL fabric, enabling on-board image processing, FFT, and digital filtering in flight hardware. Architecturally, the device is built on Actel/Microsemi 0.15 um antifuse technology with a Sea-of-Modules logic fabric; the standard speed grade offers combinatorial CLB delays in the sub-nanosecond range (0.99 ns maximum is specified for the -1 speed grade variant). The hermetic ceramic CQFP package supports the outgassing, moisture, and thermal-cycling requirements of spaceflight assembly flows. Typical applications include satellite payload data processing, spacecraft bus control, telemetry/telecommand interfaces, and radiation-environment instrument controllers. Designers choose the CQFP-352 variant when a hermetic, inspectable, solderable package is required for board-level spaceflight build standards. A key design consideration: RTAX-DSP devices are one-time programmable - there is no reconfiguration, so designers must fully verify designs in Microchip Libero/M Designer software and on PROTO prototype units before committing flight units. This page synthesizes distributor availability data, same-package drop-in alternatives across speed grades, and practical spaceflight design notes not found in the manufacturer datasheet.
RTAX4000D-CQ352V - 4M-Gate Rad-Tolerant FPGA | Microchip Technology
The Microchip Technology RTAX4000D-CQ352V is a radiation-tolerant RTAX-DSP FPGA offering 4,000,000 equivalent system gates, 55,440 logic cells, and 36,960 configurable logic blocks (CLBs), housed in a 352-pin ceramic column grid array (CQ352) package with 166 user I/Os. A radiation-tolerant FPGA is a field-programmable gate array engineered to survive the total ionizing dose (TID) and single-event effects (SEE) encountered in space flight orbits, where commercial silicon would fail. Within the power-management hierarchy of spacecraft avionics, such devices sit at the top of the programmable logic taxonomy: FPGA -> programmable logic IC -> digital CMOS semiconductor. The RTAX-DSP family derives from the commercial Microsemi/Actel Axcelerator architecture and is re-characterized for space environments. Key features include live-at-power-up operation thanks to flash-based antifuse programming (no configuration PROM required on every power cycle), embedded SRAM blocks with built-in FIFO control logic, segmentable clock circuitry, and chip-wide highway routing for high-fanout signals. The RTAX4000D adds DSP-oriented multiply-accumulate resources for on-board signal processing payloads. The antifuse one-time-programmable fabric yields low static power and inherent immunity to configuration upset, a decisive advantage over SRAM-based FPGAs in radiation environments where configuration scrubbing adds system complexity. Typical applications include satellite payload data processing, spacecraft command and data handling, telemetry encoder/decoder chains, and sensor signal processing for Earth-observation instruments. Designers should note the -55C to +125C operating range and plan I/O standards and signal integrity early, as the ceramic CQ352 footprint is fixed for flight builds. This page synthesizes verified distributor data, drop-in family alternatives, pricing guidance, and practical design notes not found in the manufacturer datasheet.
RTAX4000DL-CQ352B - 4M-Gate Rad-Tolerant FPGA | Microchip
The Microchip Technology (Actel/Microsemi) RTAX4000DL-CQ352B is a 4,000,000-equivalent-gate radiation-tolerant FPGA from the RTAX-DSP family, organized as 36,960 CLBs with 166 user inputs and 166 user outputs, housed in a 352-terminal ceramic CQFP (CQ352) package for space-flight systems. A radiation-tolerant FPGA is a field-programmable gate array engineered to survive the ionizing radiation and heavy-ion environment of orbital and deep-space missions. Within the semiconductor hierarchy, it sits under programmable logic devices -> FPGAs -> rad-tolerant space FPGAs. Unlike reprogrammable SRAM FPGAs, RTAX-DSP devices use antifuse-based one-time programmable fabric that is live-at-power-up, immune to configuration upsets, and requires no external configuration PROM - a single-chip form factor valued in launch-weight-sensitive designs. Key features include 4 million system gates of CMOS fabric manufactured on a 0.15 um process, a 1.5 V core supply, and a wide military/space temperature range of -55C to +125C. The DL variant integrates dedicated multiply-accumulate (DSP) blocks alongside embedded SRAM with built-in FIFO control logic, segmentable clocks, chip-wide highway routing, and fast carry logic, enabling high-throughput signal processing payloads. The architecture is based on the commercial Axcelerator family, adapted for radiation environments with TMR-friendly fabric and package-level screening. The CQ352 ceramic metal-sealed cofired flatpack with guard ring provides hermetic encapsulation suited to vacuum operation and severe qualification flows. Typical applications include satellite payload data processing, spacecraft on-board computing, remote-sensing image processing, and telemetry/telecommand systems where SEU performance and single-chip reliability are critical. A key design consideration: antifuse FPGAs cannot be reprogrammed after programming, so verify the design fully on PROTO units in non-hermetic ceramic packages before committing flight hardware. This page synthesizes distributor inventory data, drop-in alternatives, and design guidance not found in the manufacturer datasheet.
RTAX4000DL-CQ352E - 4M-Gate Rad-Tolerant FPGA | Microchip
The Microchip Technology (Actel/Microsemi) RTAX4000DL-CQ352E is a radiation-tolerant RTAX-DSP field programmable gate array with 4,000,000 equivalent system gates, 36,960 configurable logic blocks (CLBs), and 55,440 logic cells, housed in a 352-pin ceramic column grid array (CQ352) package for space-flight applications. A radiation-tolerant FPGA is a programmable logic device qualified to survive the total ionizing dose (TID) and single-event effects (SEE) encountered in orbital and deep-space environments. Within the programmable logic hierarchy, the RTAX family sits under radiation-tolerant FPGAs, under FPGAs, under programmable logic ICs. Unlike flash- or SRAM-based commercial FPGAs, RTAX devices use antifuse programmability, giving a true single-chip form factor and live-at-power-up operation with no external configuration device to fail. Key features include up to four million system gates of performance-oriented fabric based on the commercial Axcelerator architecture, embedded SRAM blocks with built-in FIFO control logic, segmentable clock circuitry, chip-wide highway routing, and dedicated carry logic for arithmetic-intensive DSP datapaths. The DL variant adds dedicated multiply-accumulate (DSP) resources, suiting on-board signal processing. Architecturally, the RTAX4000DL inherits the Axceleron cluster-based logic structure, providing high routing efficiency and predictable timing. CMOS process technology delivers low static power consumption, which is critical where solar-array budget is limited. CMOS antifuse configuration is immune to configuration upsets, and the fabrication flow is qualified for spaceflight. Typical applications include satellite payload data processing, spaceflight instrument control, on-board image and radar signal processing, and telemetry/telecommand subsystems, where live-at-power-up reliability and SEU hardness are mandatory. Design consideration: use the Microchip Libero SoC flow with RTAX timing models, and budget the CQ352 ceramic package mass and board footprint early, since spaceflight layouts rarely allow late package changes. This page adds value beyond the datasheet by consolidating distributor stock intelligence, same-package drop-in speed-grade and temperature-grade variants, and practical design notes for spaceflight FPGA selection.
RTAX4000DL-CQ352V - 4M-Gate Radiation-Tolerant FPGA | Microchip
The Microchip Technology (Actel/Microsemi) RTAX4000DL-CQ352V is a radiation-tolerant, 4,000,000-equivalent-gate CMOS Field Programmable Gate Array from the RTAX-DSP family, providing 55,440 logic cells organized as 36,960 CLBs, housed in a 352-terminal ceramic metal-sealed cofired flatpack (S-CQFP, CQ352) package with guard ring measuring 48 mm x 48 mm. A radiation-tolerant FPGA is a programmable logic device engineered to survive the heavy-ion and proton environments encountered in orbital and deep-space flight. In the system hierarchy, the RTAX4000DL sits within the RTAX-S/SL and RTAX-DSP FPGA family, which descends from the commercial Axcelerator architecture and serves spacecraft avionics, payload data processing, and telemetry subsystems that conventional COTS FPGAs cannot reliably serve. Key features include single-chip, live-at-power-up operation enabled by antifuse programming, which eliminates the configuration PROM required by SRAM FPGAs and removes a common single point of failure. Embedded SRAM blocks with built-in FIFO control logic, segmentable clock resources, chip-wide highway routing, and dedicated carry logic support high-throughput DSP pipelines and complex glueless integration. The DL suffix denotes the DSP-enhanced member, multiplying logic density with embedded multiply-accumulate capability suited to FFT, FIR filtering, and image-processing payloads. The device operates from a 1.5V nominal core supply across a military temperature range of -55C to +125C, and the hermetic ceramic CQ352 package provides the mechanical robustness and outgassing performance required for space launch and vacuum operation. Typical applications include satellite onboard data handling, payload DSP processing, spacecraft bus avionics, and radiation-hardened signal chains in LEO, MEO, and GEO missions. A key design consideration is that RTAX devices are one-time programmable: verify your design thoroughly using the Libero SoC design flow and prototype adaptors before committing flight hardware, and budget for single-event effects through triple modular redundancy in the RTL. This page adds distributor sourcing intelligence, drop-in family alternatives, and design guidance not found in the manufacturer datasheet alone.
RTAX4000S-1LG1272PROTO - 4M-Gate Rad-Tolerant FPGA | Microchip
The Microchip Technology (Actel/Microsemi) RTAX4000S-1LG1272PROTO is a radiation-tolerant, anti-fuse FPGA offering 4,000,000 equivalent system gates, 40,320 Configurable Logic Blocks (CLBs), and 60,480 logic cells in a 1272-ball Ceramic Column Grid Array (CCGA / LG1272) package measuring 37.5mm x 37.5mm with a 1.00mm terminal pitch. The PROTO suffix identifies Microchip's prototyping variant, which uses the same silicon and packaging as flight units but omits certain flight-model screening tests. A radiation-tolerant FPGA is a field-programmable gate array engineered to survive the ionizing radiation environment of space: cosmic rays, solar particle events, and trapped proton belts. Within the hierarchy of programmable logic (FPGA -> programmable logic device -> digital IC -> semiconductor), radiation-tolerant FPGAs occupy the aerospace-grade tier, sitting between commercial parts and fully radiation-hardened (rad-hard) devices. Key features include the industry-leading RTAX-S architecture based on the commercial Axcelerator family, true single-chip form factor with live-at-power-up operation thanks to its non-volatile antifuse interconnect, and low-power CMOS construction operating from a nominal 1.5V core supply (1.425V to 1.575V range). System-level features include embedded SRAM blocks with built-in FIFO control logic, segmentable clocks, and a chip-wide highway routing resource. Technically, the RTAX-S/SL and RTAX-DSP families achieve densities of up to four million equivalent system gates, supporting high-throughput onboard data processing for spaceflight payloads. The antifuse architecture is inherently single-event-upset tolerant in routing, and live-at-power-up operation removes the need for external configuration flash, an important reliability advantage for single-string spacecraft avionics. Typical applications include satellite onboard data handling, payload processing, spacecraft avionics and telemetry interfaces, and radiation-tolerant prototyping ahead of a flight-unit RTAX4000S/SL design. The PROTO variant lets designers validate board, firmware, and system integration on flight-identical silicon and packaging at a lower cost. When designing with this device, note that PROTO units are not fully flight-qualified; substitute RTAX4000S/SL flight-grade orderable codes before launch programs. Ensure the 1.5V core rail meets the 1.425V to 1.575V window, and verify signal integrity at the 1.00mm-pitch CGA land pattern. This page synthesizes verified distributor data, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, offering engineering guidance beyond the raw spec table.