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Auto-direction voltage translators

TXB0108

ACTIVE

8-Bit Bidirectional Voltage-Level Shifter with Auto Direction Sensing and +/-15-kV ESD Protect

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Data sheet

TXB0108

ACTIVE
Data sheet Order now

Product details

Technology family TXB Applications GPIO Bits (#) 8 Data rate (max) (Mbps) 100 High input voltage (min) (V) 0.78 High input voltage (max) (V) 5.5 Vout (min) (V) 1.2 Vout (max) (V) 5.5 IOH (max) (mA) -0.02 IOL (max) (mA) 0.02 Supply current (max) (µA) 10 Features Edge rate accelerator, Integrated pullup resistors, Output enable, Partial power down (Ioff), Vcc isolation Input type Standard CMOS Output type 3-State, CMOS, Push-Pull Rating Catalog Operating temperature range (°C) -40 to 85
Technology family TXB Applications GPIO Bits (#) 8 Data rate (max) (Mbps) 100 High input voltage (min) (V) 0.78 High input voltage (max) (V) 5.5 Vout (min) (V) 1.2 Vout (max) (V) 5.5 IOH (max) (mA) -0.02 IOL (max) (mA) 0.02 Supply current (max) (µA) 10 Features Edge rate accelerator, Integrated pullup resistors, Output enable, Partial power down (Ioff), Vcc isolation Input type Standard CMOS Output type 3-State, CMOS, Push-Pull Rating Catalog Operating temperature range (°C) -40 to 85
DSBGA (YZP) 20 6.1875 mm² 2.25 x 2.75 NFBGA (NME) 20 7.5 mm² 2.5 x 3 TSSOP (PW) 20 41.6 mm² 6.5 x 6.4 USON (DQS) 20 8 mm² 4 x 2 VFBGA (ZXY) 20 See data sheet VQFN (RGY) 20 15.75 mm² 4.5 x 3.5
  • 1.2V to 3.6V on A Port and 1.65V to 5.5V on B Port (VCCA ≤ VCCB)
  • VCC Isolation Feature – If Either VCC Input Is at GND, All Outputs Are in the High-Impedance State
  • OE Input Circuit Referenced to VCCA
  • Low Power Consumption, 4µA Max ICC
  • Ioff Supports Partial-Power-Down Mode Operation
  • Latch-Up Performance Exceeds 100mA Per JESD 78, Class II
  • ESD Protection Exceeds JESD 22
    • A Port
      • 2000V Human-Body Model (A114-B)
      • 1000V Charged-Device Model (C101)
    • B Port
      • ±15kV Human-Body Model (A114-B)
      • ±8kV Human-Body Model (A114-B) (YZP Package Only)
      • 1000V Charged-Device Model (C101)
  • 1.2V to 3.6V on A Port and 1.65V to 5.5V on B Port (VCCA ≤ VCCB)
  • VCC Isolation Feature – If Either VCC Input Is at GND, All Outputs Are in the High-Impedance State
  • OE Input Circuit Referenced to VCCA
  • Low Power Consumption, 4µA Max ICC
  • Ioff Supports Partial-Power-Down Mode Operation
  • Latch-Up Performance Exceeds 100mA Per JESD 78, Class II
  • ESD Protection Exceeds JESD 22
    • A Port
      • 2000V Human-Body Model (A114-B)
      • 1000V Charged-Device Model (C101)
    • B Port
      • ±15kV Human-Body Model (A114-B)
      • ±8kV Human-Body Model (A114-B) (YZP Package Only)
      • 1000V Charged-Device Model (C101)

This 8-bit noninverting translator uses two separate configurable power-supply rails. The A port is designed to track VCCA. VCCA accepts any supply voltage from 1.2V to 3.6V. The B port is designed to track VCCB. VCCB accepts any supply voltage from 1.65V to 5.5V. This allows for universal low-voltage bidirectional translation between any of the 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, and 5V voltage nodes. VCCA should not exceed VCCB.

When the output-enable (OE) input is low, all outputs are placed in the high-impedance state.

The TXB0108 is designed so that the OE input circuit is supplied by VCCA.

This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.

To ensure the high-impedance state during power-up or power-down, OE should be tied to GND through a pulldown resistor; the minimum value of the resistor is determined by the current-sourcing capability of the driver.

This 8-bit noninverting translator uses two separate configurable power-supply rails. The A port is designed to track VCCA. VCCA accepts any supply voltage from 1.2V to 3.6V. The B port is designed to track VCCB. VCCB accepts any supply voltage from 1.65V to 5.5V. This allows for universal low-voltage bidirectional translation between any of the 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, and 5V voltage nodes. VCCA should not exceed VCCB.

When the output-enable (OE) input is low, all outputs are placed in the high-impedance state.

The TXB0108 is designed so that the OE input circuit is supplied by VCCA.

This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.

To ensure the high-impedance state during power-up or power-down, OE should be tied to GND through a pulldown resistor; the minimum value of the resistor is determined by the current-sourcing capability of the driver.
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Technical documentation

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Type Title Date
* Data sheet TXB0108 8-Bit Bidirectional Voltage-Level Translator with Auto-Direction Sensing and ±15kV ESD Protection datasheet (Rev. I) PDF | HTML 09 Dec 2024
Application note Schematic Checklist - A Guide to Designing with Auto-Bidirectional Translators PDF | HTML 12 Jul 2024
Application note Understanding Transient Drive Strength vs. DC Drive Strength in Level-Shifters (Rev. A) PDF | HTML 03 Jul 2024
Application note Leveraging Edge Rate Accelerators with Auto-Sensing Level Shifters PDF | HTML 29 Sep 2023
Application brief Future-Proofing Your Level Shifter Design with TI's Dual Footprint Packages PDF | HTML 05 Sep 2023
Application note Do’s and Don’ts for TXB and TXS Voltage Level-Shifters with Edge Rate Accelerato PDF | HTML 28 Jun 2023
Selection guide Voltage Translation Buying Guide (Rev. A) 15 Apr 2021
Application note Effects of pullup and pulldown resistors on TXS and TXB devices (Rev. A) 28 Mar 2018
Application note Factors Affecting VOL for TXS and LSF Auto-bidirectional Translation Devices 19 Nov 2017
Application note Biasing Requirements for TXS, TXB, and LSF Auto-Bidirectional Translators 30 Oct 2017
Application note A Guide to Voltage Translation With TXS-Type Translators 29 Jun 2010
Application note A Guide to Voltage Translation With TXB-Type Translators 03 Mar 2010

Design & development

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

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User guide: PDF | HTML
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Evaluation board

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

HSPICE Model for TXB0108 (Rev. A)

SCEJ242A.ZIP (101 KB) - HSpice Model
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Simulation model

TXB0108 IBIS Model (Rev. G)

SCEM518G.ZIP (205 KB) - IBIS Model
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Package Pins CAD symbols, footprints & 3D models
DSBGA (YZP) 20 Ultra Librarian
NFBGA (NME) 20 Ultra Librarian
TSSOP (PW) 20 Ultra Librarian
USON (DQS) 20 Ultra Librarian
VFBGA (ZXY) 20 Ultra Librarian
VQFN (RGY) 20 Ultra Librarian
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