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PCA9703 16-bit GPI

PCA9703 Description

PCA9703 18 V tolerant SPI 16-bit GPI with maskable INT Rev.4 * 5 September 2014 Product data sheet 1.General .
The PCA9703 is a low power 18 V tolerant SPI General Purpose Input (GPI) shift register designed to monitor the status of switch inputs.

PCA9703 Features

* 16 general purpose input ports
* 18 V tolerant input ports with 100 k external series resistor
* Input LOW threshold 0.55  VDD with minimum of 2.5 V at VDD = 4.5 V
* Open-drain interrupt output
* Interrupt enable pin (INT_EN) disables GPI pins and interrupt output
* Inter

PCA9703 Applications

* Higher voltages can be tolerated on the inputs depending on the series resistor used to limit the input current. The INT_EN pin is used to both enable the GPI pins and to enable the INT output pin to minimize battery drain in cyclically supplied pull-up or pull-down applications. The SDIN pull-down

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