8-Bit Bidirectional Voltage-Level Translator with Auto Direction Sensing and +/-15-kV ESD Protect - TXB0108

TXB0108 (ACTIVE)

8-Bit Bidirectional Voltage-Level Translator 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 TXB0101 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 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 Dual Supply Translator

 
Technology Family
Bits (#)
VCCA (Min) (V)
VCCA (Max) (V)
VCCB (Min) (V)
VCCB (Max) (V)
tpd @ Nom Voltage (Max) (ns)
Max Drive (mA)
Schmitt Trigger
Rating
Operating Temperature Range (C)
Approx. Price (US$)
Pin/Package
TXB0108 SN74AVC8T245 SN74LVC8T245 TXS0108E
  AVC     LVC      
8     8     8     8    
1.2     1.2     1.65     1.2    
3.6     3.6     5.5     3.6    
1.65     1.2     1.65     1.65    
5.5     3.6     5.5     5.5    
  2.5     4.2      
50     12     32     50    
No     No     No     No    
Catalog     Catalog     Catalog     Catalog    
-40 to 85     -40 to 85     -40 to 85     -40 to 85    
0.80 | 1ku     0.55 | 1ku     0.46 | 1ku     0.80 | 1ku    
20BGA MICROSTAR JUNIOR
20DSBGA
20TSSOP
20USON
20VQFN    
24TSSOP
24TVSOP
24VQFN    
24SO
24SOIC
24SSOP
24TSSOP
24TVSOP
24VQFN    
20BGA MICROSTAR JUNIOR
20TSSOP
20VQFN    
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