Vendor: Certus Semiconductor Category: High-Speed

Rad-Hard GPIO, ODIO & LVDS in SkyWater 90nm

A radiation-hardened SkyWater 90nm GPIO, ODIO and LVDS Interface.

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SkyWater 90nm S90 View all specifications

Overview

A radiation-hardened SkyWater 90nm GPIO, ODIO and LVDS Interface.

This Library, developed on SkyWater 90nm CMOS, delivers a radiation-hardened suite of robust interfaces covering general-purpose, open-drain, and high-speed differential signaling needs. The GPIO provides reliable 3.3V digital I/O up to 150 MHz with JESD8C.01 compliance, built-in pull-ups/downs, and 2 kV HBM protection. The ODIO extends flexibility with an open-drain interface optimized for I2C (Standard, Fast, and Fast-Mode Plus), capable of handling large capacitive loads while maintaining tight input thresholds and hysteresis. For high-performance links, the GPLVDS offers a programmable LVDS transceiver supporting up to 1.25 Gbps TX and 300 Mbps RX, fully SpaceWire compliant, while also configurable as dual GPIOs. Together, these cells provide a complete, radiation-hardened I/O portfolio that balances robustness, versatility, and speed for mission-critical applications.

Library Summary

Parameter Value
Process 1.2V
Core VDD 3.3V
VDDIO 3.3V
Temp (GPIO/ODIO) -50C to 200C
Temp (LVDS) -40C to 125C
Max Load GPIO 15-50pF
Max Load ODIO up to 550pF
Max Load LVDS 15pF(TX),0.1pF (RX)
ESD 2kV HBM, 500V CDM
Radiation Rad-Hard by design
BEOL 7M1L1F

Key features

GPIO Features

  • 150MHz 3.3V general-purpose I/O, rad-hard
  • JESD8C.01 LVCMOS33 compliant
  • 2kVHBMESDprotection with built-in 50 kpull-up/down
  • Fast switching: rise/fall 0.3-0.5 ns (15pF load)

 ODIO Features

  • 3.3V open-drain I/O, optimized for I2C
  • Drives heavy capactive loads up to 550pF
  • Strong sink current up to 15mA with 0.5V hysteresis
  • Radiation hardened with robust timing margins

LVDS Features

  • Dual-mode I/O: high-speed LVDS (1.25 Gbps TX / 300 Mbps RX)
  • Fully SpaceWire compliant in LVDS mode
  • Radiation hardened with 2kV HBM ESD
  • Fast edge rates: TX rise/fall 130-280 ps, RX rise/fall  60-460 ps

Block Diagram

VR90 block diagram

Files

Product Sheet Download

Note: some files may require an NDA depending on provider policy.

Silicon Options

Foundry Node Process Maturity
SkyWater 90nm S90 —

Specifications

Identity

Part Number
VR90
Vendor
Certus Semiconductor

Provider

Certus Semiconductor
HQ: United States
Certus Semiconductor has assembled several of the world’s foremost experts in IO and ESD design to offer our clients the ability to affordably tailor their IO libraries into the optimal fit for their products. Certus is offering the semiconductor industry a unique approach to custom IO libraries, including tailored IO designs, and ESD solutions based on simulations leveraging specialized silicon ESD models. In addition to offering fast turnaround custom IO designs, Certus offers independent ESD design, review and debug services. Through partnerships, Certus is also able to provide ESD testing & TLP support.
Contact Certus Semiconductor

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Frequently asked questions about High-Speed I/O Pad IP

What is Rad-Hard GPIO, ODIO & LVDS in SkyWater 90nm?

Rad-Hard GPIO, ODIO & LVDS in SkyWater 90nm is a High-Speed IP core from Certus Semiconductor listed on Semi IP Hub. It is listed with support for skywater.

How should engineers evaluate this High-Speed?

Engineers should review the overview, key features, supported foundries and nodes, maturity, deliverables, and provider information before shortlisting this High-Speed IP.

Can this semiconductor IP be compared with similar products?

Yes. Buyers can compare this product with similar semiconductor IP cores or IP families based on category, provider, process options, and structured technical specifications.

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