RTAX250S-1CQ208V - 250k-Gate Rad-Tolerant FPGA CQ208 | Microchip
MPN: RTAX250S-1CQ208V β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1850 | $1,850.00 |
| 10 | $1720 | $17,200.00 |
| 100 | $1580 | $158,000.00 |
| 500 | $1450 | $725,000.00 |
| 1,000 | $1320 | $1,320,000.00 |
Drop-in alternatives for RTAX250S-1CQ208V β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
RTAX250S-CQ208V
β Drop-Inπ Reference alternative (not in catalog)
RTAX250S-1CQ208E
β Drop-Inπ Reference alternative (not in catalog)
5962-0421901VYC
β Drop-Inπ Reference alternative (not in catalog)
5962-0421902QYC
β Drop-Inπ Reference alternative (not in catalog)
RTAX250SL-1CQ208V
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
RTAX250S-1CQ208V Maximum Ratings & Electrical Characteristics
| Family | RTAX-S/SL Radiation-Tolerant FPGA |
| Equivalent Gates | 250000 gates |
| Configurable Logic Blocks (CLBs) | 2816 |
| Logic Cells | 4224 |
| Combinatorial Delay per CLB | 0.93 ns |
| Process Technology | CMOS |
| Speed Grade | -1 |
| Package | CQ208 (208-pin ceramic column carrier) |
| Mounting Type | Surface Mount |
| Grade / Temperature Suffix | V (space grade designation) |
| Power-Up Behavior | Live at power-up |
| Form Factor | True single-chip |
| Radiation Tolerance | Radiation-tolerant (RTAX-S family) |
| Alternate Organization | 30000 ASIC gates (per RTAX250S-CQ208V documentation) |
| Military Qualification Context | Family devices listed on QML class Q/V per Mil Prf 38535 (DLA cross reference) |
RTAX250S-1CQ208V cq208 (208-pin ceramic column carrier) Pin Configuration Guide
Complete pinout information for RTAX250S-1CQ208V (cq208 (208-pin ceramic column carrier) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for RTAX250S-1CQ208V.
Refer to the datasheet for full pin configuration.
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
RTAX250S-1CQ208V is suitable for 6 applications: Satellite On-Board Data Handling, Payload Telemetry and Command Formatting, Attitude Determination and Control Interface Logic, Spacecraft Bus Communications Bridges, Launch Vehicle Avionics, Instrumentation and Sensor Front-End Processing.
Satellite On-Board Data Handling
The RTAX250S-1CQ208V fits spacecraft on-board computer (OBC) logic where 250,000 gates implement telemetry formatting, memory controllers, and time-tagging around a rad-tolerant processor. Its live-at-power-up behavior means the fabric is functional the instant spacecraft power is applied - no configuration PROM readout delay - which simplifies power-up sequencing and autonomous recovery from brownouts. In this role the 2816-CLB fabric bridges MIL-STD-1553, SpaceWire, and custom bus bridges while the 0.93 ns CLB combinatorial delay supports moderate-speed datapath functions. Because the CQ208 ceramic package is hermetic, the device withstands the vacuum and thermal cycling of low Earth orbit; designers should budget SEU mitigation (TMR, scrubbing) in the fabric per the RTAX-S datasheet reliability guidance.
Recommended
Payload Telemetry and Command Formatting
Payload data-handling chains use the RTAX250S-1CQ208V to implement CCSDS-class frame formation, compression pre-processing, and downlink formatting at the 4224-logic-cell scale. The part's CMOS process keeps static power low - a critical budget line for payload electronics that are only powered during contact windows - while speed grade -1 timing (0.93 ns/CLB) is ample for telemetry rates well below the fabric's upper bound. The CQ208 footprint leaves generous user I/O for parallel payload interfaces. Prototyping occurs on commercial Axcelerator parts per app note AC170 before flight-programming, letting teams validate the formatter RTL early. When mission radiation analysis shows aggressive environments, the RTAX250SL-1CQ208V drop-in preserves the same footprint with enhanced tolerance.
Recommended
Attitude Determination and Control Interface Logic
ADCS units employ the RTAX250S-1CQ208V as glue logic between star trackers, sun sensors, reaction-wheel drivers, and the main flight computer. The FPGA aggregates encoder interfaces, generates PWM commands, and performs watchdog functions; the 2816-CLB organization provides enough capacity for redundant-sensor voting logic, a common architectural requirement in ADCS designs. Live-at-power-up operation ensures safe-mode wheel-command paths exist immediately at reset without configuration sequencing. Its true single-chip form factor removes external configuration components from the ADCS reliability chain, improving unit-level parts count and failure-mode budget. The hermetic CQ208 ceramic package supports the conductive-cooling mechanical interfaces typical of attitude-control electronics boxes.
Recommended
Spacecraft Bus Communications Bridges
Bus avionics such as 1553 remote terminals, CAN gateway logic, and custom inter module links map naturally onto the RTAX250S-1CQ208V. Its 250k-gate capacity implements multiple protocol engines concurrently, and user I/O on the 208-pin ceramic package supports redundant bus interfaces with independent PHY-side connections. Low static power suits always-on bus monitor functions that must remain awake between payloads' duty cycles. Because RTAX-S is a single-chip antifuse-class fabric, bus bridge firmware-in-logic is immutable once programmed - a security and reliability advantage over SRAM FPGAs that can be corrupted in flight. Teams should prototype the bridge RTL on Axcelerator commercial parts (AC170 flow) and lock the flight bitstream only after full integration testing.
Recommended
Launch Vehicle Avionics
Launch-stage electronics face severe vibration and short mission durations with high reliability demands; the RTAX250S-1CQ208V's hermetic CQ208 ceramic package and live-at-power-up fabric make it a proven choice for stage sequencer support logic, pyrotechnic arm/fire interlock logic, and telemetered health aggregation. The 0.93 ns combinatorial delay at speed grade -1 supports deterministic interlock paths where worst-case timing must be statically provable - an advantage of antifuse-class fabrics over reconfigurable SRAM devices. Programs procuring under defense flows can specify the DLA drawing equivalents (5962-0421901VYC / 5962-0421902QYC), which per the Microchip DLA cross reference are qualified per Mil Prf 38535 and listed on QML class Q/V, simplifying government acceptance.
Recommended
Instrumentation and Sensor Front-End Processing
Science instruments - imagers, spectrometers, particle detectors - use the RTAX250S-1CQ208V for detector timing generators, co-addition pipelines, and interface FIFOs feeding downstream rad-hard processors. The 4224 logic cells comfortably hold multi-channel acquisition counters, while the FPGA's low CMOS static power preserves the tight thermal budgets of cryogenic-adjacent electronics boxes. Hermetic CQ208 construction prevents outgassing concerns associated with molded commercial packages near optical apertures. Instrument teams commonly share one FPGA design across engineering-model and flight-model units, and the antifuse-class fabric guarantees the flight unit behaves identically to the validated prototype after programming. For deeper pipelines, the RTAX4000S-1CQ352V offers roughly 4M gates in the same family design flow.
Recommended
Recommended Products Summary
Engineering reference data for RTAX250S-1CQ208V β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | RTAX250S-CQ208V | RTAX250S-1CQ208E | 5962-0421901VYC | RTAX250SL-1CQ208V |
|---|---|---|---|---|---|
| Brand | Microchip Technology (Actel/Microsemi) | Microchip Technology | Microchip Technology | Microchip Technology (DLA drawing) | Microchip Technology |
| Package | CQ208 ceramic, 208 pins | CQ208 - same | CQ208 - same | CQ208 - same | CQ208 - same |
| Equivalent Gates | 250000 | 250000 | 250000 | 250000 | 250000 |
| CLBs / Logic Cells | 2816 / 4224 | 2816 / 4224 | 2816 / 4224 | 2816 / 4224 | 2816 / 4224 |
| Combinatorial Delay per CLB | 0.93 ns | [DATA_NEEDED] (standard speed grade, slower) | 0.93 ns | [DATA_NEEDED] | 0.93 ns |
| Speed Grade | -1 | Standard (no -1) | -1 | [DATA_NEEDED] | -1 |
| Temperature / Screening Suffix | V (space grade) | V (space grade) | E (extended temperature) | Mil Prf 38535 / QML Q-V flow | V (space grade, SL flow) |
| Radiation Flow | RTAX-S rad-tolerant | RTAX-S rad-tolerant | RTAX-S rad-tolerant | RTAX-S rad-tolerant (SMD qualified) | RTAX-SL enhanced rad-tolerant |
| Live-at-Power-Up | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Faster timing for timing-critical flight logic (vs RTAX250S-CQ208V)
- Space-grade screening on the standard die (vs RTAX250S-1CQ208E)
- Government procurement path via DLA SMD (vs 5962-0421901VYC)
- Lower cost at equal footprint for benign orbits (vs RTAX250SL-1CQ208V)
Design Notes
RTAX-S devices are programmed once (antifuse-class fabric), so a bitstream error in a ceramic CQ208 flight unit cannot be fixed by reconfiguration - the part is scrap. Complete full RTL freeze, timing closure, and system integration on the commercial Axcelerator prototype per Microchip application note AC170 before programming any flight units. Budget spare flight parts of at least 10-20% of the unit quantity to cover programming yield and handling losses; a single 250k-gate flight FPGA represents significant program cost.
Speed grade selection must be locked before timing sign-off. The '-1' grade gives 0.93 ns combinatorial delay per CLB, while the standard RTAX250S-CQ208V is slower; substituting a standard-speed part into a '-1'-validated footprint without re-running static timing analysis risks marginal paths appearing only at temperature. All drop-in family variants share the CQ208 pinout, but I/O standards and drive strengths should be re-verified in Libero SoC when changing part number suffixes.
Microchip markets RTAX-S on low power consumption and single-chip operation. Because the fabric is live at power-up with no external configuration PROM, total board power and inrush sequencing are simpler than SRAM FPGA designs - but confirm the exact static and dynamic current figures from the RTAX-S/SL datasheet (ds2169) power tables for your activity profile rather than estimating. For SEU resilience, combine the fabric's inherent tolerance with design-level mitigation (triple modular redundancy, watchdogs) sized to your orbit's expected upset rate.
Compliance Information
Space-grade ceramic package; RoHS/REACH status not stated in reviewed distributor data. DLA drawing equivalents are qualified per Mil Prf 38535 (QML class Q/V) per the Microchip DLA cross reference guide. Confirm compliance declarations with Microchip for your screening flow; leaded ceramic packages may fall under high-reliability exemptions.
