The SN74LVC1T45-Q1 device is a single-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 1.65 V to
5.5 V. The B-port is designed to track VCCB. VCCB
accepts any supply voltage from 1.65 V to 5.5 V. This allows for universal low-voltage
bidirectional translation between any of the 1.8-V, 2.5-V, 3.3-V, and 5-V voltage nodes.
The SN74LVC1T45-Q1 device is a single-bit, non-inverting level translator. The fully
configurable dual-rail design allows each port to overate over the full 1.65-V to 5.5-V power
supply range. It is ideal for applications that need a wide bidirectional translation range.
The SN74LVC1T45-Q1 is designed so that the DIR input is powered by
This device is fully specified for partial-power-down applications using
Ioff. The Ioff circuitry disables the outputs,
preventing damaging current backflow through the device when it is powered down.
The VCC isolation feature ensures that if either
VCC input is at GND, then both ports are in the high-impedance state.