SN74AVC4T245 is a 4-bit noninverting bus transceiver with separate configurable power-supply rails

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The SN74AVC4T245 is 4-bit noninverting bus transceiver that uses two separate configurable power-supply rails. 

The A port is designed to track VCCA. VCCA accepts any supply voltage from 1.2 V to 3.6 V. The B port is designed to track VCCB. VCCB accepts any supply voltage from 1.2 V to 3.6 V. The SN74AVC4T245 is optimized to operate with VCCA/VCCBset at 1.4 V to 3.6 V. It is operational with VCCA/VCCB as low as 1.2 V. This allows for universal low-voltage bidirectional translation between any of the 1.2-V, 1.5-V, 1.8-V, 2.5-V, and 3.3-V voltage nodes. The SN74AVC4T245 device is designed for asynchronous communication between two data buses. The logic levels of the direction-control (DIR) input and the output-enable (OE) input activate either the B-port outputs or the A-port outputs or place both output ports into the high-impedance mode. The SN74AVC4T245 device is designed so that the control pins are supplied by VCCA. This device is fully specified for partial-power-down applications using Ioff.

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