74HCT4051PW,118

The 74HCT4051PW,118 is a single-pole octal-throw (SP8T) analog switch designed for 8:1 multiplexing and demultiplexing of analog or digital signals. Built with CMOS technology, it offers low power dissipation and high noise immunity. The switch features three digital select inputs (S0, S1, S2), eight independent inputs/outputs (Yn), a common input/output (Z), and an enable input (E) that turns off all switches when HIGH.

Key electrical characteristics include a maximum on-resistance of 120Ω, with typical values of 80Ω at VCC - VEE = 4.5V, 70Ω at 6.0V, and 60Ω at 9.0V. The analog input voltage range is -5V to +5V, and the supply voltage range is ±1V to ±5V. The device exhibits a -3dB bandwidth of 180MHz and includes built-in break-before-make switching. ESD protection is rated at 2000V HBM (Class 2) and 1000V CDM (Class C3). Latch-up performance exceeds 100mA per JESD78 Class II Level B.

The part is offered in a 16-lead TSSOP package (body width 4.4mm) for surface-mount assembly. It is specified for operation over the temperature range -40°C to +125°C, suitable for industrial and automotive applications. Typical uses include analog signal multiplexing in data acquisition, digital signal routing, and signal gating.