SN74LVC2T45-Q1

SN74LVC2T45-Q1 www.ti.com SCES818 – SEPTEMBER 2010 DUAL-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS Check for Samples: SN74LVC2T45-Q1 FEATURES 1 Qualified for Automotive Applications Fully Configurable Dual-Rail Design Allows Each Port to Operate Over the Full 1.65-V to 5.5-V Power-Supply Range VCC Isolation Feature – If Either VCC Input Is at GND, Both Ports Are in the High-Impedance State DIR Input Circuit Referenced to VCCA Low Power Consumption, 10-mA Max ICC ±24-mA Output Drive at 3.3 V Ioff Supports Partial-Power-Down Mode Operation Max Data Rates – 420 Mbps (3.3-V to 5-V Translation) – 210 Mbps (Translate to 3.3 V) – 140 Mbps (Translate to 2.5 V) – 75 Mbps (Translate to 1.8 V) DESCRIPTION/ORDERING INFORMATION This dual-bit noninverting bus transceiver 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 SN74LVC2T45-Q1 is designed for asynchronous communication between two data buses. The logic levels of the direction-control (DIR) 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...