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BUY PCA9534DBR https://www.utsource.net/itm/p/11723484.html
IC I/O EXPANDER I2C 8B 16SSOP
Description: PCA9534 is a low-power CMOS device that provides 4-bit bidirectional I/O port. Features: - Low power consumption - High noise immunity - 4-bit bidirectional I/O port - Open-drain interrupt output - Inputs can be driven by open-drain or push-pull outputs - I/O port can be configured as input or output - Outputs can be configured as open-drain or push-pull - Outputs can be configured to be either totem pole or open-drain Applications: - Automotive - Industrial - Consumer - Medical - Telecommunications (For reference only)