This 2-bit noninverting bus transceiver uses two separate configurable power-supply rails. The A ports are designed to track VCCA and accepts any supply voltage from 1.2 V to 3.6 V. The B ports are designed to track VCCB and accepts any supply voltage from 1.2 V to 3.6 V. This allows for universal low-voltage bidirectional translation and level-shifting between any of the 1.2-V, 1.5-V, 1.8-V, 2.5-V, and 3.3-V voltage nodes.
The SN74AVC2T45 is designed for asynchronous communication between two data buses. The logic levels of the direction-control (DIR pin) input activate either the B-port outputs or the A-port outputs. The device transmits data from the A bus to the B bus when the B-port outputs are activated and from the B bus to the A bus when the A-port outputs are activated. The input circuitry on both A and B ports always is active and must have a logic HIGH or LOW level applied to prevent excess leakage current on the internal CMOS structure.
Available in the Texas Instruments NanoFree™ Package
I/Os Are 4.6 V Tolerant
Partial-Power-Down Mode Operation
Max Data Rates
500 Mbps (1.8 V to 3.3 V)
320 Mbps (<1.8 V to 3.3 V )
320 Mbps (Level-Shifting to 2.5 V or 1.8 V)
280 Mbps (Level-Shifting to 1.5 V)
240 Mbps (Level-Shifting to 1.2 V)
Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II