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SN74AVC1T45DCKR

TISN74AVC1T45DCKR

Texas Instruments
Voltage Level Translator Bidirectional 1 Circuit 1 Channel 500Mbps SC-70-6
NRND47,200 in stock
Datasheet Digi-Key Mouser Compare Prices

Overview

The SN74AVC1T45DCKR is a single-channel, bidirectional voltage level translator designed for high-speed data communication between components operating at different voltage rails. It supports a wide operating range from 1.2V to 3.6V on both VCCA and VCCB, making it ideal for interfacing low-voltage processors with legacy logic or higher-voltage peripherals.

Why Choose This Part

This translator offers exceptionally high data throughput of 500Mbps and very low static power consumption with a 20uA maximum standby current. The Vcc isolation feature ensures that if either Vcc input is at ground, both ports enter a high-impedance state, protecting sensitive CMOS inputs.

Applications

High-Speed Logic Interfacing
Bridging signals between modern 1.2V or 1.8V SoCs and 3.3V peripherals at data rates up to 500Mbps.
Directional Level Shifting
Managing signal translation for buses where data flow direction is controlled by a dedicated GPIO pin.
Battery Powered Systems
Utilizing the partial-power-down mode (Ioff) to prevent damaging backflow current when one power rail is disabled.

Key Specifications

Data Rate 500Mbps
Output Type Tri-State, Non-Inverted
Channel Type Bidirectional
Mounting Type Surface Mount
Package / Case 6-TSSOP, SC-88, SOT-363
Voltage - VCCA 1.2 V ~ 3.6 V
Voltage - VCCB 1.2 V ~ 3.6 V
Translator Type Voltage Level
Number of Circuits 1
Channels per Circuit 1
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package SC-70-6

Getting Started

To implement this part, ensure VCCA is tied to the logic level of the control (DIR) pin, as the directionality circuit is referenced to VCCA. For prototyping, this SC-70 package requires a breakout board or a dedicated PCB footprint with 0.1uF decoupling capacitors placed as close as possible to the VCCA and VCCB pins.

SN74AVC1T45 Family

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

Part Number Package Stock
SN74AVC1T45DCKR (this part) TSSOP-6 47,200
SN74AVC1T45DRLR SOT-563, SOT-666 33,494

Also Consider

SN74LVC1T45DCKR TITexas Instruments - Offers a wider voltage range up to 5.5V for interfacing with 5V logic systems, though at lower maximum speeds.
74AVC1T45GW Nexperia - A pin-to-pin compatible alternative with similar 500Mbps performance and wide 1.2V to 3.6V range.
TXB0101DCKR TITexas Instruments - Provides auto-direction sensing, eliminating the need for a DIR control pin in push-pull applications.