General The 74HC4051D, 74HC4052D are high speed CMOS ANALOG MULTIPLEXER/DEMULTIPLEXER fabricated with silicon gate C2MOS technology.
They achieve the high speed operation similar to equivalent LSTTL while maintaining the CMOS low power dissipation.
The 74HC4051D has an 8 channel configuration and the 74HC4052D has a 4 channel × 2 configuration.