The UT54ACS164646S is a 16-bit, MultiPurpose, registered, level shifting, bus transceiver consisting of D-type flip-flops, control circuitry, and 3-state outputs arranged for multiplexed transmission of data directly from the data bus or from the internal storage registers. The high-speed, low power UT54ACS164646S transceiver is designed to perform multiple functions including: asynchronous two-way communication, signal buffering, voltage translation, cold- and warmsparing. The device can be used as two independant 8-bit transceivers or one 16-bit transceiver. Data on the A or B bus is clocked into the registers on the rising edge of the appropriate clock (xCLKAB or xCLKBA) input. With either VDD supply equal to zero volts, the UT54ACS164646S outputs and