1 Features

• Qualified for automotive applications

• Low ON resistance:

– 25Ω typical (V CC = 4.5V)

• Fast switching and propagation speeds

• Low OFF leakage current

• Wide operating temperature range: −40°C to

125°C

• Direct LSTTL input logic compatibility: VIL = 0.8V

maximum, VIH = 2V minimum

• CMOS input compatibility: I ≤ 1μA at VOL, VOH

2 Applications

• Analog signal switching and multiplexing:

signal gating, modulators, squelch controls,

demodulators, choppers, commutating switches

• Digital signal switching and multiplexing

• Analog-to-digital and digital-to-analog conversions

• Digital control of frequency, impedance, phase,

and analog-signal gain

• Building automation

3 Description

The CD74HCT4066-Q1 contains four independent

digitally controlled analog switches that use silicongate

CMOS technology to achieve operation speeds

similar to LSTTL, with the low power consumption of

standard CMOS integrated circuits.

These switches feature the characteristic linear ON

resistance of the metal-gate CD4066B. Each switch is

turned on by a high-level voltage on its control input.