Datasheet

December 1990 4
Philips Semiconductors Product specification
8-channel analog multiplexer/demultiplexer
with latch
74HC/HCT4351
FUNCTION TABLE
Notes
1. Last selected channel “ON”.
2. Selected channels latched.
3. H = HIGH voltage level
L = LOW voltage level
X = don’t care
↓ = HIGH-to-LOW LE transition
APPLICATIONS
• Analog multiplexing and demultiplexing
• Digital multiplexing and demultiplexing
• Signal gating
INPUTS
CHANNEL
ON
E
1
E
2
LE S
2
S
1
S
0
H
X
X
L
X
X
X
X
X
X
X
X
none
none
L
L
L
L
H
H
H
H
H
H
H
H
L
L
L
L
L
L
H
H
L
H
L
H
Y
0
Y
1
Y
2
Y
3
L
L
L
L
H
H
H
H
H
H
H
H
H
H
H
H
L
L
H
H
L
H
L
H
Y
4
Y
5
Y
6
Y
7
L
X
H
X
L
↓
X
X
X
X
X
X
(1)
(2)
Fig.4 Functional diagram.
Fig.5 Schematic diagram (one switch).