1 Features
• Qualified for automotive applications
• AEC-Q100 qualified with the following results:
– Device temperature grade 1: –40°C to +125°C
ambient operating temperature range
– Device HBM ESD Classification Level H2
– Device CDM ESD Classification Level C3B
• Fully configurable dual-rail design allows each port
to operate over the full 1.65V to 5.5V 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
• ±24mA output drive at 3.3V
• Ioff supports partial-power-down mode operation
• Maximum data rates:
– 420Mbps (3.3V to 5V translation)
– 210Mbps (translate to 3.3V)
– 140Mbps (translate to 2.5V)
– 75Mbps (translate to 1.8V)

2 Applications
• Head units
• ADAS – cameras
• Telematics

3 Description
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 1.65V to 5.5V. The B-port is designed
to track VCCB. VCCB accepts any supply voltage from
1.65V to 5.5V. This allows for universal low-voltage
bidirectional translation between any of the 1.8V, 2.5V,
3.3V, and 5V voltage nodes.
The SN74LVC1T45-Q1 device is a single-bit, noninverting
level translator. The fully configurable dualrail
design allows each port to overate over the full
1.65V to 5.5V power supply range. This device is
an excellent choice for applications that need a wide
bidirectional translation range.
The SN74LVC1T45-Q1 is designed so that the DIR
input is powered by VCCA.
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 is designed so that if either
VCC input is at GND, then both ports are in the highimpedance
state.