1 Features
• 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 ss at GND,
all outputs are in the high-impedance state
• Output enable (OE) input circuit referenced to
VCCA
• Low power consumption, 5μA maximum ICC
• I OFF supports partial power-down mode operation
• Latch-up Performance Exceeds 100mA Per JESD
78, Class II
• ESD Protection Exceeds JESD 22
– A Port:
• 2500V Human-Body Model (A114-B)
• 1500V Charged-Device Model (C101)
– B Port:
• ±15kV Human-Body Model (A114-B)
• 1500V Charged-Device Model (C101)

2 Applications
• Headsets
• Smartphones
• Tablets
• Desktop PC

3 Description
This TXB0104 4-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 must
not exceed VCCB.
When the 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 must
be tied to GND through a pulldown resistor The
current sourcing capability of the driver determines
the minimum value of the resistor.
The TXB0104 device is designed so the OE input
circuit is supplied by VCCA.
This device is fully specified for partial powerdown
applications using I OFF. The I OFF circuitry
disables the outputs, which prevents damaging
current backflow through the device when the device
is powered down.