• Available in the Texas Instruments NanoFree™ Package
• 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, 4-μA 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)
• Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
• ESD Protection Exceeds JESD 22
  • 2000-V Human-Body Model (A114-A)
  • 200-V Machine Model (A115-A)
  • 1000-V Charged-Device Model (C101)

• Personal Electronic
• Industrial
• Enterprise
• Telecom

This single-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 SN74LVC1T45 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 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 ICC and ICCZ.