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TXS0108EPWR

TITXS0108EPWR

Texas Instruments
8-bit auto-direction translator useful when you need bi-directional level translation without a direction pin for mixed-signal buses.
NRND95,134 in stock
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Overview

The TXS0108EPWR is an 8-bit, non-inverting bi-directional voltage level translator designed for interfacing modern low-voltage microcontrollers with higher-voltage peripherals. It utilizes an auto-direction sensing architecture that eliminates the need for a dedicated direction-control pin, simplifying PCB routing and software overhead. This device is particularly effective for open-drain applications like I2C or push-pull interfaces across mixed-voltage domains from 1.4V to 3.6V on Port A and 1.65V to 5.5V on Port B.

Why Choose This Part

The auto-direction sensing capability allows for seamless integration into bi-directional buses without software intervention. It features built-in edge-rate accelerators to improve data rates on high-capacitance loads and requires no specific power-supply sequencing, reducing system design complexity. Additionally, the TSSOP-20 package offers a high pin density with a standard 0.65mm pitch for easy automated assembly.

Applications

I2C and SMBus Translation
Ideal for bridging 1.8V processors to 3.3V or 5V sensors and EEPROMs on shared open-drain buses.
SD Card Interfacing
Translates high-speed signals between low-voltage SoC I/O banks and 3.3V SD memory cards.
GPIO Level Shifting
Provides 8 channels of simultaneous bi-directional translation for general purpose logic between disparate power rails.
UART Communication
Enables cross-voltage serial communication without managing hardware flow control for direction switching.

Key Specifications

Features Auto-Direction Sensing
Data Rate 60Mbps
Output Type Open Drain, Push-Pull
Channel Type Bidirectional
Mounting Type Surface Mount
Package / Case 20-TSSOP (0.173", 4.40mm Width)
Voltage - VCCA 1.4 V ~ 3.6 V
Voltage - VCCB 1.65 V ~ 5.5 V
Translator Type Voltage Level
Number of Circuits 1
Channels per Circuit 8
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 20-TSSOP

Getting Started

To implement the TXS0108EPWR, ensure VCCA is always less than or equal to VCCB, with decoupling capacitors placed close to both supply pins. Connect the Output Enable (OE) pin to VCCA through a pull-down resistor to ensure high-impedance state during power-up. For prototyping, this IC is frequently available on 20-pin TSSOP breakout boards compatible with standard breadboards.

TXS0108 Family

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

Part Number Data Rate Output Type Package Temp Range Stock
TXS0108EPWR (this part) 60M Open Drain, Push-P.. TSSOP-20 -40degC ~ 85degC (.. 95,134
TXS0108E 60M Open Drain, Push-P.. VFQFN-20 -40degC ~ 85degC (.. 26,553
TXS0108ERKSR 110M Open Drain, Push-P.. VFQFN-20 -40degC ~ 125degC .. 3,096
TXS0108EQWRKSRQ1 110M Open Drain, Push-P.. VFQFN-20 -40degC ~ 125degC .. 4,995
Also available as: TXS0108ENMER, TXS0108EQPWRQ1, TXS0108ERGYR

Also Consider

TXB0108PWR TITexas Instruments - Select this for push-pull applications requiring high drive strength where open-drain compatibility is not needed.
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