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SN74LVC2T45

TISN74LVC2T45

Texas Instruments
Dual-bit voltage-level translator available in small packages as an alternative for mixed-voltage signal translation.
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Overview

The SN74LVC2T45 is a dual-bit, dual-supply, non-inverting bidirectional voltage level translator. It allows for seamless communication between devices operating at different voltage nodes, supporting supply voltages from 1.65V to 5.5V. This device is an effective solution for bridging logic levels in mixed-voltage systems, capable of data rates up to 420Mbps.

Why Choose This Part

This translator offers flexible dual-rail operation, supporting independent voltage rails from 1.65V to 5.5V, making it highly adaptable to various system voltage requirements. Its bidirectional capability with a high data rate of 420Mbps ensures efficient communication without signal degradation. The inclusion of Ioff and ESD protection enhances system reliability and robustness.

Applications

Mixed-Voltage Microcontroller Systems
Enabling communication between a microcontroller operating at one voltage and peripherals or sensors operating at a different voltage, such as 3.3V to 5V or 1.8V to 3.3V interfaces.
SD Card Interfaces
Translating logic levels for SD card interfaces where the host controller and the SD card may operate at different voltage standards.
I2C and SPI Bus Translation
Facilitating reliable data transfer on I2C or SPI buses where devices on the bus operate at different voltage levels.
General-Purpose Logic Translation
Acting as a universal translator for any two-line bidirectional data communication requiring voltage level shifting.
Portable and Battery-Powered Devices
Its low standby current of 4 uA makes it suitable for power-sensitive applications where battery life is critical.

Key Specifications

Data Rate 420Mbps
Output Type Tri-State, Non-Inverted
Channel Type Bidirectional
Mounting Type Surface Mount
Package / Case 8-LSSOP, 8-MSOP (0.110", 2.80mm Width)
Voltage - VCCA 1.65 V ~ 5.5 V
Voltage - VCCB 1.65 V ~ 5.5 V
Translator Type Voltage Level
Number of Circuits 1
Channels per Circuit 2
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package SM8

Getting Started

To get started with the SN74LVC2T45, integrate it into your PCB design, connecting VCCA and VCCB to the respective supply voltages of the two logic levels you wish to translate. The DIR pin, referenced to VCCA, controls the data flow direction. Ensure proper decoupling capacitors are placed on both VCCA and VCCB lines close to the device.

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