Features: 2V to 6V operation Wide operating temperature range: -55C to 125C Function: gathering all the way ADC 16 analog signals. Use CD74HC4067 16-channel analog signal switch Analog Input: C0-C15 16 channels Analog output: SIG Channel Control: S0-S3 http://www.alldatasheet.com/datasheet-pdf/pdf/15615/PHILIPS/74HC4067.html