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  (typical) at VCC  VEE = 4.5 V
 70  (typical) at VCC  VEE = 6.0 V
 60  (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