Datasheet4U Logo Datasheet4U.com

PCA9704 - 18V tolerant SPI 8-bit GPI

General Description

The PCA9704 is a low power 18 V tolerant SPI General Purpose Input (GPI) shift register designed to monitor the status of switch inputs.

Key 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.
  • SP.

📥 Download Datasheet

Other Datasheets by NXP Semiconductors

Part Number Description
PCA9703 16-bit GPI
PCA9745B LED driver
PCA9410 DC-to-DC boost converter
PCA9410A DC-to-DC boost converter
PCA9420 Power management
PCA9450 Power management
PCA9460 13-channel PMIC
PCA9485 switched capacitor direct charger
PCA9500 8-bit I2C and SMBus I/O port
PCA9501 8-bit I2C and SMBus I/O port

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
PCA9704 18 V tolerant SPI 8-bit GPI with maskable INT Rev. 1 — 10 December 2015 Product data sheet 1. General description 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 greater than 0.8  VDD and as a LOW when it is less than 0.55  VDD (minimum LOW threshold of 2.5 V at 5 V node). The PCA9704 can monitor up to 8 switch inputs. The falling edge of the CS pin samples the input port status and clears the interrupt.