TXB0108 8-Bit Bidirectional Voltage-Level Shifter with Auto Direction Sensing and +/-15-kV ESD Protect | TI.com

TXB0108 (ACTIVE)

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

 

Description

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 1.2 V to 3.6 V. The B port is designed to track VCCB. VCCB accepts any supply voltage from 1.65 V to 5.5 V. This allows for universal low-voltage bidirectional translation between any of the 1.2-V, 1.5-V, 1.8-V, 2.5-V, 3.3-V, and 5-V 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.

Features

  • 1.2 V to 3.6 V on A Port and 1.65 V to 5.5 V 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, 4-µA Max ICC
  • Ioff Supports Partial-Power-Down Mode Operation
  • Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
  • ESD Protection Exceeds JESD 22
    • A Port
      • 2000-V Human-Body Model (A114-B)
      • 1000-V Charged-Device Model (C101)
    • B Port
      • ±15-kV Human-Body Model (A114-B)
      • ±8-kV Human-Body Model (A114-B)
        (YZP Package Only)
      • 1000-V Charged-Device Model (C101)

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Parametrics Compare all products in Auto bidirectional voltage translation

 
Technology Family
Application
Bits (#)
High input voltage (Min) (Vih)
High input voltage (Max) (Vih)
Output voltage (Max) (V)
Output voltage (Min) (V)
IOH (Max) (mA)
IOL (Max) (mA)
Package Group
Rating
TXB0108 SN74AVC8T245 SN74AVC8T245-Q1 SN74LVC8T245 TXS0108E
TXB     AVC     AVC     LVC     TXS    
SPI
I2C
SDIO    
UART
SPI
JTAG
I2S    
UART
SPI
JTAG
I2S    
RGMII
SPI
JTAG    
I2C
SMBUS
UART
GPIO    
8     8     8     8     8    
0.78     0.78     0.78     1.08     1    
5.5     3.6     3.6     5.5     5.5    
5.5     3.6     3.6     5.5     5.5    
1.2     1.2     1.2     1.65     1.2    
-0.02     -12     -12     -32     0    
0.02     12     12     32     0    
BGA MICROSTAR JUNIOR | 20
DSBGA | 20
TSSOP | 20
USON | 20
VQFN | 20    
TSSOP | 24
TVSOP | 24
VQFN | 24    
TSSOP | 24
VQFN | 24    
SOIC | 24
SO | 24
SSOP | 24
SSOP | 24
TSSOP | 24
TVSOP | 24
VQFN | 24    
BGA MICROSTAR JUNIOR | 20
TSSOP | 20
VQFN | 20    
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