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    Parts   Interface ICs  Level Shifters    TXB0108 level shifters Family    TXB0108    TXB0108DQSR
TXB0108DQSR

TITXB0108DQSR

Texas Instruments
Voltage Level Translator Bidirectional 1 Circuit 8 Channel 100Mbps 20-USON (4x2)
Active446 in stock
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Overview

The TXB0108DQSR is an 8-bit bidirectional voltage-level translator featuring auto-direction sensing, eliminating the need for a direction control signal. It bridges mismatched logic levels between a VCCA range of 1.2V to 3.6V and a VCCB range of 1.65V to 5.5V, supporting data rates up to 100Mbps.

Why Choose This Part

The auto-direction sensing feature simplifies PCB routing and reduces GPIO count by removing the need for a DIR control pin. It includes partial-power-down mode support via IOFF circuitry, which prevents damaging backflow current when the device is powered down.

Applications

Microcontroller I/O Level Shifting
Interfacing 1.8V or 3.3V MCUs with 5V sensors and peripherals.
Push-Pull Logic Translation
High-speed data transfer between different voltage domains for CMOS logic signals.
SD Card Interfacing
Level shifting between high-voltage SD card interfaces and low-voltage processor cores.

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-UFDFN
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-USON (4x2)

Getting Started

Ensure that VCCA is always less than or equal to VCCB during operation to maintain stability. The OE pin should be tied to GND through a pull-down resistor to ensure the high-impedance state during power-up or power-down transitions.

Part of TXB0108 level shifters family » TXB0108

TXB0108 Family

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

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

Also Consider

LSF0108 TITexas Instruments - Provides a wider translation range and supports up to 200Mbps, but requires external pull-up resistors.

Categories

Interface ICs > Level Shifters