SN74AVC4T245PWR Dual-Bit Bus Transceiver

This 4-bit noninverting bus transceiver uses twoseparate configurable power-supply rails. The A portis designed to track VccA. VCcA accepts any supplyvoltage from 1.2 V to 3.6 V. The B port is designed totrack Vcce. Vcce accepts any supply voltage from1.2 V to 3.6 V. The SN74AVC4T245 is optimized tooperate with Vcca/Vcce set at 1.4 V to 3.6 V.

It isoperational with VccA/Vcce as low as 1.2 V. Thisallows foruniversal low-voltagebidirectionatranslation between any of the 1.2-V， 1.5-V, 1.8-V2.5-V, and 3.3-V voltage nodes.TheSN74AVC4T245 device is designed forasynchronous communication between two databuses.

The logic levels of the direction-control (DIR)input and the output-enable (OE) input activate eitherthe B-port outputs or the A-port outputs or place bothoutput ports into the high-impedance mode.

Thedevice transmits data from the A bus to the B buswhen the B-port outputs are activated, and from the Bbus to the A bus when the A-port outputs areactivated. The input circuitry on both A and B ports isalways active and must have a logic HIGH or LOWlevel applied to prevent excess lcc and lccz.