18 V Tolerant SPI 16-Bit/8-Bit GPI with INT


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Block Diagram


PCA9701_PCA9702 Block Diagram


Key Features

  • 16 general purpose input ports (PCA9701) or 8 general purpose input ports (PCA9702)
  • 18 V tolerant input ports with 100 kΩ external series resistor
  • Input LOW threshold 0.4 x 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 µA maximum
  • SPI serial interface with speeds up to 5 MHz
  • ESD protection exceeds 8 kV HBM per JESD22-A114, 350 V MM and 1000 V CDM per JESD22-C101
  • Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA
  • Operating temperature range: -40 °C to +125 °C
  • PCA9701 offered in SO24, TSSOP24 and HWQFN24 packages
  • PCA9702 offered in TSSOP16 package


Quick reference to our documentation types.

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Design Resources

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Design Files

2 design files

  • Models

    PCA9702 IBIS model

  • Models

    PCA9701 IBIS model


2 hardware offerings


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