Datasheet

CD4051B-Q1, CD4052B-Q1, CD4053B-Q1
CMOS ANALOG MULTIPLEXERS/DEMULTIPLEXERS
WITH LOGIC−LEVEL CONVERSION
SCHS354A − AUGUST 2004 − REVISED JANUARY 2008
15
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
APPLICATION INFORMATION
In applications where separate power sources drive V
DD
and the signal inputs, the V
DD
current capability should
exceed V
DD
/R
L
(R
L
= effective external load). This provision avoids permanent current flow or clamp action on the
V
DD
supply when power is applied or removed from the CD4051B, CD4052B, or CD4053B.
A
B
E
1/2
CD4556
A
B
C
CD4051B
INH
A
B
C
CD4051B
INH
A
B
C
CD4051B
INH
A
B
C
D
E
Q
0
Q
1
Q
2
Common
Output
Figure 24. 24-to-1 Multiplexer Addressing