PCA9704 - NXP

PCA9704 18V tolerant SPI 8-bit GPI

The PCA9704 is a low power 18 V tolerant SPI General Purpose Input (GPI) shift register designed to monitor the status of switch inputs. It generates an interrupt when one or more of the switch inputs change state but allows selected inputs to not generate interrupts using the interrupt masking feature. The input level is recognized as a HIGH when it is grea.

Features

 8 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
 Interrupt-masking feature allows no interrupt generation from selected inputs
 VDD range: 4.5 V to 5.5 V
 IDD is very low 2.5 A maximum
 SPI serial interface with speeds up to 5 MHz
 SPI supports daisy-chain connection for large switch numbers
 AEC-Q100 compliance available NXP Semiconductors PCA9704 18 V tolerant SPI 8-.