8 Application and Implementation

Note

Information in the following applications sections is not part of the TI component specification,

and TI does not warrant its accuracy or completeness. TI’s customers are responsible for

determining suitability of components for their purposes, as well as validating and testing their design

implementation to confirm system functionality.

8.1 Application Information

The TXS0101 can be used in level-translation applications for interfacing devices or systems operating at

different interface voltages with one another. The TXS0101 is an excellent choice for use in applications where

an open-drain driver is connected to the data I/Os. The TXS0101 can also be used in applications where a

push-pull driver is connected to the data I/Os, but the TXB0102 might be a better option for such push-pull

applications.

8.2 Typical Application

Data

GND

GND

GND

Data

V

CCA

V

CCB

OE

3.3 V

1.8 V

1.8-V

System

Controller

A

B

3.3-V

System

Figure 8-1. Typical Application Schematic

8.2.1 Design Requirements

For this design example, use the parameters listed in Table 8-1.

Table 8-1. Design Parameters

DESIGN PARAMETER

EXAMPLE VALUE

Input voltage range

1.65 to 3.6V

Output voltage range

2.3 to 5.5V

8.2.2 Detailed Design Procedure

To begin the design process, determine the following:

• Input voltage range:

– Use the supply voltage of the device that is driving the TXS0101 device to determine the input voltage

range. For a valid logic high the value must exceed the VIH of the input port. For a valid logic low the value

must be less than the VIL of the input port.

• Output voltage range:

– Use the supply voltage of the device that the TXS0101 device is driving to determine the output voltage

range.

– The TXS0101 device has 10kΩ internal pullup resistors. External pullup resistors can be added to reduce

the total RC of a signal trace if necessary.

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TXS0101

SCES638E – OCTOBER 2007 – REVISED DECEMBER 2024

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