MC74VHCT4066

The MC74VHCT4066 utilizes silicongate CMOS technology to achieve fast propagation delays, low ON resistances, and low OFF channel leakage current. This bilateral switch/multiplexer/demultiplexer controls analog and digital voltages that may vary across the full powersupply range (from VCC to GND).

The VHCT4066 is identical in pinout to the metalgate CMOS MC14066 and the highspeed CMOS HC4066A. Each device has four independent switches. MC74VHCT4066 has been designed so that the ON resistances (RON) are much more linear over input voltage than RON of metalgate CMOS analog switches.

The ON/OFF control inputs are compatible with standard LSTTL outputs. The input protection circuitry on MC74VHCT4066 allows overvoltage tolerance on the ON/OFF control inputs, allowing MC74VHCT4066 to be used as a logiclevel translator from 3.0V CMOS logic to 5.0V CMOS Logic or from 1.8V CMOS logic to 3.0V CMOS Logic while operating at the highervoltage power supply.

The MC74VHCT4066 input structure provides protection when voltages up to 7V are applied, regardless of the supply voltage. MC74VHCT4066 allows the MC74VHCT4066 to be used to interface 5V circuits to 3V circuits.