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| TCA6408A-Q1 Datasheet, PDF (25/40 Pages) Texas Instruments – Low-Voltage 8-Bit I2C and SMBus I/O Expander With Interrupt Output | |||
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9 Application and Implementation
TCA6408A-Q1
SCPS234 â SEPTEMBER 2016
NOTE
Information in the following applications sections is not part of the TI component
specification, and TI does not warrant its accuracy or completeness. TIâs customers are
responsible for determining suitability of components for their purposes. Customers should
validate and test their design implementation to confirm system functionality.
9.1 Application Information
Applications of the TCA6408A-Q1 has this device connected as a slave to an I2C master (processor), and the I2C
bus may contain any number of other slave devices. The TCA6408A-Q1 is in a remote location from the master,
placed close to the GPIOs to which the master needs to monitor or control.
A typical application of the TCA6408A-Q1 operates with a lower voltage on the master side (VCCI), and a higher
voltage on the P-port side (VCCP). The P-ports can be configured as outputs connected to inputs of devices such
as enable, reset, power select, the gate of a switch, and LEDs. The P-ports can also be configured as inputs to
receive data from interrupts, alarms, status outputs, or push buttons.
Copyright © 2016, Texas Instruments Incorporated
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