PCA9539AHF,128 IC-9539 INTERFACE 100KHZ 25mA 6.5V PCA9539AHF,128 is a versatile and high-performance I/O expander that supports a supply voltage range of - with - output type. Designed for efficient operation within a frequency of - and temperature range of -. Compact package type: N/A, mounting style: -.Manufactured with compliance to - standards for reliable performance. Packaged as - for convenience.