PRINCIPLES OF OPERATION

Applications

Architecture

V

CCB

B

V

CCA

V

CCB

GateBias

One-

shot

One-

shot

10k

10k

T1

T2

A

Input Driver Requirements

Power Up

Enable and Disable

TXS0102

The TXS0102 can be used in level-translation applications for interfacing devices or systems operating at

different interface voltages with one another. The TXS0102 is ideal for use in applications where an open-drain

driver is connected to the data I/Os. The TXS0102 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.

The TXS0102 architecture (see Figure 1) does not require a direction-control signal to control the direction of

data flow from A to B or from B to A.

Figure 1. Architecture of a TXS01xx Cell

Each A-port I/O has an internal 10-k

turns on the PMOS transistors (T1, T2) for a short duration, which speeds up the low-to-high transition.

external driver is less than 50

Ω.

damage the device, so any power supply can be ramped up first.

The TXS0102 has an OE input that is used to disable the device by setting OE low, which places all I/Os in the

one-shot circuitry to become operational after OE is taken high.

Copyright © 2007–2009, Texas Instruments Incorporated

Submit Documentation Feedback

9

Product Folder Link(s): TXS0102