IC, I/O EXPANDER, 16BIT, 3.4MHZ, SOIC-28; IC, I/O EXPANDER, 16BIT, 3.4MHZ, SOIC-28; Chip Configuration:16 bit; Bus Frequency:3.4MHz; IC Interface Type:I2C; No. of I/O's:16; Supply Voltage Range:1.8V to 5.5V; Digital IC Case Style:SOIC; No. of Pins:28; Delay Time:50ns