U74HC138

DESCRIPTION 

 The U74HC138 decodes a three-bit Address to 1-of-8 active-low

outputs. 

This device features three Chip Select inputs, two active-low

and one active-high, to facilitate the demultiplexing, cascading, 

and chip-selecting functions. 

The demultiplexing function is accomplished by using the 

address inputs to select the desired device output. One of the Chip 

Selects is used as a data input while the other Chip Selects are 

held in their active states. 

FEATURES 

* Operate from 2.0V ~ 6.0V 

* Low Input Current: 100nA Max 

* Low Quiescent Current: 8μA Max 

* Typ tPD=15ns 

* Output Drive:4mA @ 5V 

规格书U74HC138