Radiation validation of critical design blocks of the GR718B radiation-tolerant 18× SpaceWire router

The GR718B is a radiation tolerant 18-port, standalone, SpaceWire router developed by Cobham Gaisler AB for space applications. The validation of the most critical design blocks of the SpaceWire router with respect to Single Event Effects, when operated at high frequencies, is reported herein. In addition, the insensitivity of the design library used for the development of this device to Single Event Latch-Up and Total Ionizing Dose is presented. The results obtained validate the design blocks at their maximum operating frequency and support the choice of the design library for space applications.