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TXB0101DCKR

TITXB0101DCKR

Texas Instruments
Voltage Level Translator Bidirectional 1 Circuit 1 Channel 100Mbps SC-70-6
NRND8,530 in stock
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Overview

The TXB0101DCKR is a 1-bit, bidirectional voltage-level translator featuring auto-direction sensing for high-speed digital logic applications. It allows for seamless communication between components operating on different voltage rails, supporting VCCA from 1.2V to 3.6V and VCCB from 1.65V to 5.5V. This device is particularly useful in mixed-voltage systems where a single data line requires level shifting without the need for a dedicated direction control pin.

Why Choose This Part

The auto-direction sensing eliminates the need for a DIR control signal, simplifying PCB routing and reducing MCU pin count. It supports high-speed data rates up to 100Mbps and features low power consumption with a typical sleep current of 8uA. Additionally, the SC-70-6 package provides a footprint of only 2mm by 1.25mm, making it ideal for space-constrained designs.

Applications

Mixed-Voltage Logic Interfacing
Connecting 1.8V microcontrollers to 3.3V or 5V peripherals in mobile and consumer electronics.
Handheld Devices
Used in smartphones and tablets to bridge low-power processor I/O with higher voltage display or sensor modules.
Partial Power-Down Systems
Ideal for designs using Ioff circuitry to prevent backflow current when segments of the system are powered down.
General Purpose I/O Expansion
Translating single-channel control signals like chip selects or status lines across different power domains.

Key Specifications

Features Auto-Direction Sensing
Data Rate 100Mbps
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 1.65 V ~ 5.5 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 the TXB0101DCKR, ensure VCCA is always less than or equal to VCCB and both rails are properly bypassed with 0.1uF capacitors. Since it uses an internal buffer architecture for auto-direction, avoid using this part with open-drain interfaces like I2C; for those applications, use the TXS series instead. For prototyping, look for SC-70 to DIP adapter boards to interface with standard breadboards.

Also Consider

TXS0101 TITexas Instruments - Designed for open-drain applications like I2C and lower-speed push-pull interfaces.
74LVC1T45 Nexperia - A direction-controlled alternative that provides higher drive strength for long PCB traces.
SN74AVC1T45 TITexas Instruments - Provides much higher data rates and lower voltage operation down to 0.9V for specialized low-power architectures.

Categories

Interface ICs > Level Shifters