Product details

Technology Family LSF Applications I2C, SMBus Bits (#) 4 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
Technology Family LSF Applications I2C, SMBus Bits (#) 4 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
DSBGA (YZP) 12 0 mm² 1.482 x 1.982 TSSOP (PW) 14 32 mm² 5 x 6.4 UQFN (RUT) 12 3 mm² 2 x 1.7 VQFN (RGY) 14 12 mm² 3.5 x 3.5
  • Provides bidirectional voltage translation with no direction terminal
  • Supports up to 100-MHz up translation and greater than 100-MHz down translation at ≤ 30-pF capacitor load and up to 40-MHz up/down translation at 50-pF capacitor load
  • Supports Ioff, partial power-down mode (refer to Feature Description)
  • Allows bidirectional voltage level translation between
    • 0.8 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 terminals for EN = Low
  • Flow-through pinout for easy PCB trace routing
  • Latch-up performance exceeds 100 mA per JESD17
  • –40°C to 125°C operating temperature range
  • ESD performance tested per JESD 22
    • 2000-V human-body model (A114-B, Class II)
    • 200-V machine model (A115-A)
    • 1000-V charged-device model (C101)
  • Provides bidirectional voltage translation with no direction terminal
  • Supports up to 100-MHz up translation and greater than 100-MHz down translation at ≤ 30-pF capacitor load and up to 40-MHz up/down translation at 50-pF capacitor load
  • Supports Ioff, partial power-down mode (refer to Feature Description)
  • Allows bidirectional voltage level translation between
    • 0.8 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 terminals for EN = Low
  • Flow-through pinout for easy PCB trace routing
  • Latch-up performance exceeds 100 mA per JESD17
  • –40°C to 125°C operating temperature range
  • ESD performance tested per JESD 22
    • 2000-V human-body model (A114-B, Class II)
    • 200-V machine model (A115-A)
    • 1000-V charged-device model (C101)

The LSF family consists of bidirectional voltage level translators that operate from 0.8 V to 4.5 V (Vref_A) and 1.8 V to 5.5 V (Vref_B). This range allows for bidirectional voltage translations between 0.8 V and 5.0 V without the need for a direction terminal in open-drain or push-pull applications. The LSF family supports level translation applications with transmission speeds greater than 100 MHz for open-drain systems that utilize a 15-pF capacitance and 165-Ω pull-up resistor.

When the An or Bn port is LOW, the switch is in the ON-state and a low resistance connection exists between the An and Bn ports. The low Ron of the switch allows connections to be made with minimal propagation delay and signal distortion. The voltage on the A or B side will be limited to Vref_A and can be pulled up to any level between Vref_A and 5 V. This functionality allows a seamless translation between higher and lower voltages selected by the user without the need for directional control.

The LSF family consists of bidirectional voltage level translators that operate from 0.8 V to 4.5 V (Vref_A) and 1.8 V to 5.5 V (Vref_B). This range allows for bidirectional voltage translations between 0.8 V and 5.0 V without the need for a direction terminal in open-drain or push-pull applications. The LSF family supports level translation applications with transmission speeds greater than 100 MHz for open-drain systems that utilize a 15-pF capacitance and 165-Ω pull-up resistor.

When the An or Bn port is LOW, the switch is in the ON-state and a low resistance connection exists between the An and Bn ports. The low Ron of the switch allows connections to be made with minimal propagation delay and signal distortion. The voltage on the A or B side will be limited to Vref_A and can be pulled up to any level between Vref_A and 5 V. This functionality allows a seamless translation between higher and lower voltages selected by the user without the need for directional control.

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Technical documentation

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Type Title Date
* Data sheet LSF0204x 4-Bits Bidirectional Multi-Voltage Level Translator for Open-Drain and Push-Pull Application datasheet (Rev. H) PDF | HTML 29 Apr 2021
Selection guide Voltage Translation Buying Guide (Rev. A) 15 Apr 2021
Application note Biasing Requirements for TXS, TXB, and LSF Auto-Bidirectional Translators 30 Oct 2017
EVM User's guide LSF-EVM Hardware User's Guide 05 Jul 2017
EVM User's guide LSF010X Evaluation Module User's Guide (Rev. A) 29 Jun 2015
Application note Voltage Translation Between 3.3-V, 2.5-V, 1.8-V, and 1.5-V Logic Standards (Rev. B) 30 Apr 2015
Application note Voltage-Level Translation With the LSF Family (Rev. B) 12 Mar 2015
Application note Selecting the Right Level Translation Solution (Rev. A) 22 Jun 2004

Design & development

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

Evaluation board

14-24-LOGIC-EVM — Generic Logic EVM Supporting 14 through 24 Pin PW, DB, D, DW, NS, DYY, and DGV Packages

This EVM is designed to support any logic device that has a D, DW, DB, NS, PW, DYY or DGV package in a 14 to 24 pin count.

User guide: PDF | HTML
Not available on TI.com
Evaluation board

14-24-NL-LOGIC-EVM — Generic 14 through 24 pin non-leaded package evaluation module

Flexible EVM designed to support any logic or translation device that has a BQA, BQB, RGY (14-24 pin), RSV, RJW, or RHL package.
User guide: PDF | HTML
Not available on TI.com
Evaluation board

LSF-EVM — 1 to 8-bit LSF Translator Family Evaluation Module

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, (...)

User guide: PDF
Not available on TI.com
Simulation model

LSF0204 HSPICE Model

SLVMAL3.ZIP (7 KB) - HSpice Model
Reference designs

TIDA-01012 — Wireless IoT, Bluetooth® Low Energy, 4½ Digit, 100kHz True RMS Digital Multimeter

Many products are now becoming connected through the Internet of Things (IoT), including test equipment such as digital multimeters (DMM).  Enabled by Texas Instruments’ SimpleLink™ ultra-low power wireless microcontroller (MCU) platform, the TIDA-01012 reference design (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-01014 — Enhanced Accuracy Battery Fuel Gauge Reference Design for Low Power Industrial IoT Field Metering

The Internet of Things (IoT) revolution is efficiently connecting applications and instruments, enabling battery powered, wide scale very low power sensor deployment.  New technologies, such as TI’s advanced sensor and low power connectivity devices, are enabling these instruments to be (...)
Design guide: PDF
Schematic: PDF
Package Pins Download
DSBGA (YZP) 12 View options
TSSOP (PW) 14 View options
UQFN (RUT) 12 View options
VQFN (RGY) 14 View options

Ordering & quality

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