General description
The 74HC4051; 74HCT4051 is a single-pole octal-throw analog switch (SP8T) suitable for use in analog or digital 8:1 multiplexer/demultiplexer applications. The switch features three digital select inputs (S0, S1 and S2), eight independent inputs/outputs (Yn), a common input/output (Z) and a digital enable input (E). When E is HIGH, the switches are turned off. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.

FEATUREs and benefits
• Wide analog input voltage range from -5 V to +5 V
• Complies with JEDEC standard no. 7A
• Low ON resistance:
    – 80 Ω (typical) at VCC - VEE = 4.5 V
    – 70 Ω (typical) at VCC - VEE = 6.0 V
    – 60 Ω (typical) at VCC - VEE = 9.0 V
• Logic level translation: to enable 5 V logic to communicate with ±5 V analog signals
• Typical ‘break before make’ built-in
• ESD protection:
    – HBM JESD22-A114F exceeds 2000 V
    – MM JESD22-A115-A exceeds 200 V
    – CDM JESD22-C101E exceeds 1000 V
• Multiple package options
• Specified from -40 °C to +85 °C and -40 °C to +125 °C

APPLICATIONs
• Analog multiplexing and demultiplexing
• Digital multiplexing and demultiplexing
• Signal gating