74VHCT138AM View Datasheet(PDF) - Fairchild Semiconductor

Part Name

Description

MFG CO.

74VHCT138AM

3-to-8 Decoder/Demultiplexer

Fairchild Semiconductor 

Truth Table

Inputs

Outputs

E1 E2 E3 A0 A1 A2 O0 O1 O2 O3 O4 O5 O6 O7

HXXXXXHHHHHHHH

XHXXXXHHHHHHHH

XX L XXXHHHHHHHH

L LHL L L LHHHHHHH

L LHHL LHLHHHHHH

L LHLHLHHLHHHHH

L LHHHLHHHLHHHH

L LHL LHHHHHLHHH

L LHHLHHHHHHLHH

L LHLHHHHHHHHLH

L LHHHHHHHHHHHL

H = HIGH Voltage Level

L = LOW Voltage Level

X = Immaterial

Logic Diagram

Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.

www.fairchildsemi.com

2

Share Link: