IN74HC4051 is a high-performance silicon-gate CMOS switch array, introduced by Infineon. This product features fast propagation delays, low on-resistances, and low off-leakage currents. These switches control analog voltages that may vary across the complete power supply range (from VCC to VEE). The channel-select inputs determine which one of the analog inputs/outputs is to be connected, by means of an analog switch, to the common output/input. When the enable pin is high, all analog switches are turned off. The channel-select and enable inputs are compatible with standard CMOS outputs; with pull-up resistors, they are compatible with LS/ALSTTL outputs.