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SN74AXC1T45DBVR

TISN74AXC1T45DBVR

Texas Instruments
Voltage Level Translator Bidirectional 1 Circuit 1 Channel 500Mbps SOT-23-6
NRND32,670 in stock
Datasheet Digi-Key Mouser Compare Prices

Overview

The SN74AXC1T45DBVR is a single-bit, non-inverting bidirectional voltage level translator designed for high-speed data transmission up to 500Mbps. It features dual independent power rails (VCCA and VCCB) that allow for versatile translation between voltage nodes ranging from 0.65V to 3.6V. This transceiver is specifically designed to handle ultra-low voltage levels used in modern processor cores and low-power peripherals.

Why Choose This Part

The device supports an ultra-low 0.65V minimum operating voltage, enabling compatibility with next-generation sub-1V logic levels. Its high-speed 500Mbps capability makes it suitable for advanced communication protocols, while integrated glitch suppression circuitry prevents unwanted logic transitions during power-up.

Applications

Processor to Peripheral Translation
Interfacing low-voltage 0.8V or 1.2V MCU/FPGA I/O pins with 3.3V legacy sensors or communication modules.
High-Speed SPI/UART Buffering
Translating high-frequency clock or data lines where signal integrity and low propagation delay are critical.
Battery-Powered Systems
Utilizing partial-power-down mode (Ioff) and low standby current (16uA) to preserve battery life when portions of the system are powered off.
Multi-Voltage Domain Isolation
Using the Vcc isolation feature to ensure all I/O pins are in a high-impedance state if either power supply input is at ground.

Key Specifications

Data Rate 500Mbps
Output Type Tri-State, Non-Inverted
Channel Type Bidirectional
Mounting Type Surface Mount
Package / Case SOT-23-6
Voltage - VCCA 0.65 V ~ 3.6 V
Voltage - VCCB 0.65 V ~ 3.6 V
Translator Type Voltage Level
Number of Circuits 1
Channels per Circuit 1
Operating Temperature -40degC ~ 125degC (TA)
Supplier Device Package SOT-23-6

Getting Started

When designing with the SN74AXC1T45DBVR, ensure that the DIR pin is driven to a known logic state to define the data direction (A-to-B or B-to-A). Decouple both VCCA and VCCB with 0.1uF ceramic capacitors placed as close to the SOT-23-6 package pins as possible. For prototyping, TI offers the SN74AXC1T45EVM evaluation module which provides easy access to all pins via header connections.

SN74AXC1T45 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Package Stock
SN74AXC1T45DBVR (this part) 6-23 32,670
SN74AXC1T45DRLR SOT-563, SOT-666 9,046

Also Consider

SN74LVC1T45DBVR TITexas Instruments - A standard version for systems that do not require sub-1.65V operation but need the same SOT-23-6 footprint.
74AVC1T45GW Nexperia - An alternative high-speed translator that supports operation down to 0.8V in a compact 6-pin SC-88 package.
TXS0101DBVR TITexas Instruments - An auto-direction sensing translator ideal for open-drain applications like I2C where a dedicated direction pin is not available.

Categories

Interface ICs > Level Shifters