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TXB0108PWR

TITXB0108PWR

Texas Instruments
Voltage Level Translator Bidirectional 1 Circuit 8 Channel 100Mbps 20-TSSOP
Active43,364 in stock
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Overview

The TXB0108PWR is an 8-bit bidirectional voltage level translator featuring auto-direction sensing and 100Mbps data rate capability. It is designed to bridge mismatched logic levels between a low-voltage controller (1.2V to 3.6V) and higher-voltage peripherals (1.65V to 5.5V) without requiring a direction-control signal.

Why Choose This Part

This translator eliminates the need for a GPIO-based direction pin, simplifying PCB routing and firmware overhead for bidirectional buses. It features Vcc isolation, ensuring that if either Vcc input is at ground, all outputs enter a high-impedance state to prevent backflow current.

Applications

SD Card Interfacing
Translating signals between 1.8V or 3.3V host controllers and high-speed SD memory cards.
Sensor Integration
Connecting low-voltage microcontrollers to 5V digital sensors or actuators across 8 parallel channels.
Legacy Logic Support
Interfacing modern 1.2V or 1.8V processors with legacy 3.3V or 5V peripheral systems.
Mobile and Portable Electronics
Optimized for smartphones and tablets due to low 0.06mA run current and partial-power-down mode support.

Key Specifications

Features Auto-Direction Sensing
Data Rate 100Mbps
Output Type Tri-State, Non-Inverted
Channel Type Bidirectional
Mounting Type Surface Mount
Package / Case 20-TSSOP (0.173", 4.40mm Width)
Voltage - VCCA 1.2 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

When designing with the TXB0108, ensure that the driving CMOS outputs can provide enough current to overcome the internal 4-kohm pull-up resistors. For prototyping, the TXB0108 is widely available on breakout boards from vendors like Adafruit or SparkFun, which can be used with standard breadboards and logic analyzers to verify timing.

Part of TXB0108 level shifters family » TXB0108

TXB0108 Family

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

Part Number Package Stock
TXB0108PWR (this part) TSSOP-20 43,364
TXB0108DQSR UFDFN-20 446
TXB0108PWRG4 TSSOP-20 960
TXB0108RGYR VFQFN-20 —

Also Consider

TXS0108E TITexas Instruments - Better suited for open-drain applications like I2C due to internal pull-up resistors optimized for edge-rate acceleration.

Categories

Interface ICs > Level Shifters