Product details


Technology Family LSF Applications MDIO Bits (#) 1 High input voltage (Min) (Vih) 0.95 High input voltage (Max) (Vih) 5 Vout (Min) (V) 0.95 Vout (Max) (V) 5 IOH (Max) (mA) 0 IOL (Max) (mA) 0 Rating Catalog open-in-new Find other Auto-direction voltage translators

Package | Pins | Size

USON (DRY) 6 1 mm² 1.5 x 1 X2SON (DTQ) 6 1 mm² 1 x 0.8 open-in-new Find other Auto-direction voltage translators


  • Provides bidirectional voltage translation with no direction pin
  • Supports up to 100-MHz up translation and greater than 100-MHz down translation at ≤ 30pF cap load and up To 40-MHz up/down translation at 50pF cap load
  • Allows bidirectional voltage-level translation between
    • 0.95 V ↔ 1.8/2.5/3.3/5 V
    • 1.2 V ↔ 1.8/2.5/3.3/5 V
    • 1.8 V ↔ 2.5/3.3/5 V
    • 2.5 V ↔ 3.3/5 V
    • 3.3 V ↔ 5 V
  • Low standby current
  • 5-V tolerance I/O port to support TTL
  • Low RON provides less signal distortion
  • High-impedance I/O pins for EN = Low
  • Flow-through pinout for easy PCB trace routing
  • Latch-up performance >100 mA per JESD 17
  • –40°C to 125°C Operating temperature range
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The LSF family of devices supports bidirectional voltage translation without the need for DIR pin which minimizes system effort (for PMBus, I2C, SMBus, etc.). The LSF family of devices supports up to 100-MHz up translation and greater than 100-MHz down translation at ≤ 30pF cap load and up to 40-MHz up/down translation at 50pF cap load which allows the LSF family to support more consumer or telecom interfaces (MDIO or SDIO).

LSF family supports 5-V tolerance on I/O port which makes it compatible with TTL levels in industrial and telecom applications. The LSF family is able to set up different voltage translation levels on each channel which makes it very flexible.

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Technical documentation

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Type Title Date
* Data sheet LSF010x 1/2/8 Channel Auto-Bidirectional Multi-Voltage Level Translator for Open-Drain and Push-Pull Applications datasheet (Rev. K) May 03, 2021
Selection guide Voltage Translation Buying Guide (Rev. A) Apr. 15, 2021
Application note Factors Affecting VOL for TXS and LSF Auto-bidirectional Translation Devices Nov. 19, 2017
Application note Biasing Requirements for TXS, TXB, and LSF Auto-Bidirectional Translators Oct. 30, 2017
User guide LSF-EVM Hardware User's Guide Jul. 05, 2017
Selection guide Logic Guide (Rev. AB) Jun. 12, 2017
User guide LSF010X Evaluation Module User's Guide (Rev. A) Jun. 29, 2015
Application note Voltage Translation Between 3.3-V, 2.5-V, 1.8-V, and 1.5-V Logic Standards (Rev. B) Apr. 30, 2015
Application note Voltage-Level Translation With the LSF Family (Rev. B) Mar. 12, 2015
Technical article Complex translation made simple Jul. 23, 2014
Application note Selecting the Right Level Translation Solution (Rev. A) Jun. 22, 2004

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

document-generic User guide

The LSF family of devices are level translators that support a voltage range of 0.95V and 5V and provide multi-voltage bidirectional translation without a direction pin.

The LSF-EVM comes populated with the LSF0108PWR device and has landing patterns that are compatible with the LSF0101DRYR (...)

  • Supports all devices in the LSF family of level translators (LSF0101, LSF0102, LSF0204, LSF0108)
  • Layout optimized for high speed operation (up to 100 MHz up translation and greater than 100 MHz down translation)
  • Includes various connection interfaces including edge-mount SMB and differential probe (...)

Design tools & simulation

SDLM021.ZIP (55 KB) - IBIS Model
SDLM024.ZIP (114 KB) - PSpice Model

Reference designs

Four-output synchronous buck reference design for automotive telematics control units
PMP21939 — This reference design uses an LM63635-Q1 synchronous buck converter to output either a 3.3-V or 5-V rail. The bus converter switches at 2.1 MHz, and the load converters (TPS62810-Q1) switch at 2.2 MHz. The system is designed for telematics control unit power. Easily configurable jumpers allow users (...)
document-generic Schematic

CAD/CAE symbols

Package Pins Download
SON (DRY) 6 View options
X2SON (DTQ) 6 View options

Ordering & quality

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Support & training

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