The UT54ACS245 and the UT54ACTS245 are non-inverting octal bus transceivers designed for asynchronous two-way communication between data buses. The control function implementation minimizes external timing requirements. The devices allow data transmission from the A bus to the B bus or from the B bus to the A bus depending upon the logic level at the direction control (DIR) input. The enable input (G ) disables the device so that the buses are effectively isolated. The devices are characterized over full military temperature range of -55 C to +125 C.