TXB0101 1-Bit Bidirectional Level-Shifting and Voltage Translator

With Auto Direction-Sensing and ±15kV ESD Protection

1 Features

• Available in the Texas Instruments NanoFree™

package

• 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, 5μA maximum 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)

• 250V Machine model (A115-A)

• 1500V Charged-device model (C101)

– B port

• 15kV Human body model (A114-B)

• 250V Machine model (A115-A)

• 1500V Charged-device model (C101)

2 Applications

• Handsets

• Smartphones

• Tablets

• Desktop PCs

3 Description

This 1-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.

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.

NanoFree™

package

technology

is

a

major

breakthrough in IC packaging concepts, using the die

as the package.

Package Information

PART NUMBER

PACKAGE(1)

BODY SIZE (NOM)

TXB0101

SOT-23 (DBV) (6)

2.90mm × 1.60mm

SC70 (DCK) (6)

2.00mm × 1.25mm

SOT (DRL) (6)

1.60mm × 1.20mm

DSBGA (YZP) (6)

0.90mm × 1.40mm

USON (DRY) (6)

1.45mm × 1.00mm

(1)

For all available packages, see the orderable addendum at

the end of the data sheet.

Data

GND

GND

GND

Data

A

B

VCCA

VCCB

OE

1.8-V

System

Controller

3.3-V

System

1.8 V

3.3 V

TXB0101

Typical Operating Circuit

TXB0101

SCES639F – JANUARY 2007 – REVISED SEPTEMBER 2025

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.