EmbeddedRelated.com
SN74AXC1T45DRLR

TISN74AXC1T45DRLR

Texas Instruments
Voltage Level Translator Bidirectional 1 Circuit 1 Channel 500Mbps SOT-5X3
NRND9,046 in stock

Overview

The SN74AXC1T45DRLR is a single-bit, bidirectional voltage level translator designed for high-speed data communication between components operating at different voltage rails. It supports a wide supply range from 0.65V to 3.6V on both VCCA and VCCB ports, making it ideal for interfacing ultra-low-voltage processors with standard logic levels. The device features integrated glitch suppression and a partial-power-down mode (Ioff) that disables the outputs when either supply is removed to prevent backflow current.

Why Choose This Part

This translator offers extreme flexibility with a symmetric voltage range (0.65V to 3.6V) and high-speed performance up to 500Mbps. It provides robust protection with 8000-V HBM ESD ratings and prevents signal integrity issues during power-up through integrated glitch suppression. The tiny SOT-563 package and low power consumption make it a primary choice for space-constrained, energy-efficient designs.

Applications

High-Speed Interface Bridging
Translating logic levels for high-speed data buses up to 500Mbps between low-voltage FPGAs and higher-voltage peripherals.
Mobile and Battery-Powered Systems
Providing signal translation in power-sensitive designs due to its low 16uA standby current and ultra-low operating voltage capability.
MCU GPIO Level Shifting
Interfacing a 0.8V or 1.2V MCU core logic with 3.3V sensors or communication modules.
Isolated Power Domain Communication
Maintaining signal integrity while crossing power domains that may be powered down independently using the Vcc isolation feature.

Key Specifications

Data Rate 500Mbps
Output Type Tri-State, Non-Inverted
Channel Type Bidirectional
Mounting Type Surface Mount
Package / Case SOT-563, SOT-666
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-5X3

Getting Started

To implement this device, connect the direction control (DIR) pin to logic high or low to set the data flow direction between A and B ports. Ensure that VCCA and VCCB are decoupled with 0.1uF capacitors placed close to the device pins. Evaluation can be performed using generic SOT-563 to DIP adapter boards or by integrating the chip into custom prototypes using standard SMD soldering techniques.

SN74AXC1T45 Family

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

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

Also Consider

TXB0101DRLR TITexas Instruments - An alternative for applications requiring auto-direction sensing instead of a dedicated DIR control pin.