TXB0304 - 4-bit Bidirectional Auto-direction Sensing Translator with Fully Symmetric 0.9V to 3.6V Range

This 4-bit non-inverting translator uses two separate configurable power-supply rails. The A port is designed to track V_CCA. V_CCA accepts any supply voltage from 0.9 V to 3.6 V. The B port is designed to track V_CCB. V_CCB accepts any supply voltage from 0.9 V to 3.6 V. This allows for low Voltage bidirectional translation between 1 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V and 3.3 V voltage nodes. For the TXB0304, when the output-enable (OE) input is low, all outputs are placed in the high-impedance state. To ensure the high-impedance state during power up or power down, OE should be tied to GND through a pull-down resistor; the minimum value of the resistor is determined by the current-sourcing capability of the driver. The OE device control pin input circuit is supplied by V_CCA. This device is fully specified for partial-power-down applications using I_off. The I_off circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down. The only difference between TXB0304 and TXBN0304 is the OE signal being active high and active low respectively.

• Fully Symmetric Supply Voltages, 0.9 V to 3.6 V on
  A Port and 0.9 V to 3.6 V
• V_CC Isolation Feature – If Either V_CC Input is at
  GND, all Outputs are in High-Impedance State
• OE Input Circuit Referenced to V_CCA
• Low Power Consumption, 5 µA Max (I_CCA or I_CCB)
• I_off Supports Partial-Power-Down Mode Operation
• Latch-Up Performance Exceeds 100 mA Per
  JESD 78, Class II
• ESD Protection Exceeds JESD 22
  • 8000-V Human-Body Model (A114-B)
  • 1000-V Charged-Device Model (C101)