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LSF0108QPWRQ1

TILSF0108QPWRQ1

Texas Instruments
Voltage Level Translator Bidirectional 1 Circuit 8 Channel 20-TSSOP
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Overview

The LSF0108QPWRQ1 is an automotive-qualified, 8-channel bidirectional multi-voltage level translator that operates without a direction pin. It supports wide translation ranges from 0.95 V on the VCCA side up to 5.5 V on the VCCB side, making it ideal for interfacing modern low-voltage processors with legacy peripherals. This AEC-Q100 qualified device features an open-drain architecture with an integrated switch that allows for high-speed translation in both push-pull and open-drain applications.

Why Choose This Part

The device eliminates the need for a direction control pin, simplifying PCB routing and reducing GPIO overhead on the host controller. Its low ON-state resistance minimizes signal distortion and propagation delay, while the AEC-Q100 qualification ensures reliability in harsh automotive temperature environments. Additionally, the flow-through pin-out design facilitates easier layout by keeping input and output traces aligned.

Applications

Automotive Sensor Interfacing
Connecting 1.8V or 3.3V microcontrollers to 5V automotive sensors or actuators across 8 independent channels.
I2C and SMBus Level Shifting
Bidirectional communication for open-drain protocols where multiple voltage domains exist on the same bus.
SDIO/SPI High-Speed Translation
Providing voltage adjustment for high-speed serial interfaces between application processors and peripheral modules.
MDIO and PMBus Management
Translating management data signals in power supply and networking subsystems within vehicle control units.

Key Specifications

Features Auto-Direction Sensing
Output Type Open Drain, Push-Pull
Channel Type Bidirectional
Mounting Type Surface Mount
Package / Case 20-TSSOP (0.173", 4.40mm Width)
Voltage - VCCA 0.95 V ~ 4.5 V
Voltage - VCCB 1.8 V ~ 5.5 V
Translator Type Voltage Level
Number of Circuits 1
Channels per Circuit 8
Operating Temperature -40degC ~ 125degC (TA)
Supplier Device Package 20-TSSOP

Getting Started

When designing with the LSF0108QPWRQ1, ensure that pull-up resistors are sized correctly to meet the frequency requirements of your specific interface, such as I2C or SPI. Reference the TI LSF0108EVM evaluation module for layout best practices and to test signal integrity across different voltage nodes. Always verify that VCCA is less than or equal to VCCB as required by the internal architecture.

LSF0108 Family

Part NumberDifferenceStock
LSF0108RKSR RKSR 249

Also Consider

TXB0108QPWRQ1 TITexas Instruments - Offers automatic direction sensing with push-pull outputs, ideal for high-impedance loads that do not require open-drain support.

Categories

Interface ICs > Level Shifters