NXP | PCA9701PW,118

The PCA9701/PCA9702 are 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. The input level is recognized as a HIGH when it is greater than 0.7 ´ VDD and as a LOW when it is less than 0.4 ´ VDD (minimum threshold of 2 V at 5 V node). The PCA9701 can monitor up to 16 switch inputs and the PCA9702 can monitor up to 8 switch inputs.

Features:

• 16 general purpose input ports (PCA9701) or 8 general purpose input ports (PCA9702)
• 18 V tolerant input ports with 100 kW external series resistor
• Input LOW threshold 0.4 ´ VDD with minimum of 2 V at VDD = 4.5 V
• Open-drain interrupt output
• Interrupt enable pin (INT_EN) disables interrupt output
• VDD range: 2.5 V to 5.5 V
• IDD is very low 2.5 mA maximum
• SPI serial interface with speeds up to 5 MHz
• AEC-Q100 compliance available

Applications:

• Body control modules
• Switch monitoring
• Industrial equipment
• Cellular telephones
• Emergency lighting
• SBC wake pin extension