The Intersil HS-3374RH is a radiation hardened 8-bit bidirectional level converter designed to interface CMOS logic levels with TTL logic levels in radiation hardened bus oriented systems. The HS-3374RH is fabricated using a radiation hardened EPI-CMOS process and features eight parallel bidirectional buffer/level converters. Two control inputs, ENABLE and DISABLE, are used to determine the direction of data flow, and to set both the in puts and outputs in the high impedance state. The control inputs may be driven by either TTL or CMOS logic drivers capable of sinking one standard TTL load.