1. 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.

2. Features and benefits

? Wide analog input voltage range from -5 V to +5 V

? CMOS low power dissipation

? High noise immunity

? Complies with JEDEC standards

? JESD8C (2.7 V to 3.6 V)

? JESD7A (2.0 V to 6.0 V)

? Latch-up performance exceeds 100 mA per JESD 78 Class II Level B

? 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: ANSI/ESDA/Jedec JS-001 Class 2 exceeds 2000 V

? CDM: ANSI/ESDA/Jedec JS-002 Class C3 exceeds 1000 V

? Multiple package options

? Specified from -40 °C to +85 °C and -40 °C to +125 °C

3. Applications

? Analog multiplexing and demultiplexing

? Digital multiplexing and demultiplexing

? Signal gating