MC74HC4051A,
MC74HC4052A,
MC74HC4053A
Analog Multiplexers/
Demultiplexers
MC74HC4051A, MC74HC4052A, MC74HC4053A
FUNCTION TABLE MC74HC4051A
LOGIC DIAGRAM
Control Inputs
MC74HC4051A
Select
SinglePole, 8Position Plus Common Off
Enable CB A ON Channels
L L L L X0
13
X0
L L L H X1
14
L L H L X2
X1
3 COMMON
15
L L H H X3
X
X2
OUTPUT/
ANALOG L H L L X4
12
MULTIPLEXER/
X3
INPUT
INPUTS/
L H L H X5
1
DEMULTIPLEXER
OUTPUTS
X4
L H H L X6
5
L H H H X7
X5
2
H X X X NONE
X6
4
X = Dont Care
X7
11
A
CHANNEL 10
Pinout: MC74HC4051A (Top View)
B
SELECT
9
INPUTS
V X2 X1 X0 X3 A B C
C CC
6
16 15 14 13 12 11 10 9
ENABLE
PIN 16 = V
CC
PIN 7 = V
EE
PIN 8 = GND
1 2 3456 7 8
X4 X6 X X7 X5 Enable V GND
EE
FUNCTION TABLE MC74HC4052A
LOGIC DIAGRAM
Control Inputs
MC74HC4052A
Select
DoublePole, 4Position Plus Common Off
Enable BA ON Channels
12
X0
L L L Y0 X0
14
X1
13 L L H Y1 X1
X SWITCH
X
15
L H L Y2 X2
X2
11
L H H Y3 X3
X3
ANALOG COMMON
H X X
NONE
INPUTS/OUTPUTS
1 OUTPUTS/INPUTS
Y0
X = Dont Care
5
3
Y1
Y
Y SWITCH
2
Y2
4
Y3
Pinout: MC74HC4052A (Top View)
10
A
V X2 X1 X X0 X3 A B
CHANNELSELECT
CC
9
PIN 16 = V
CC
INPUTS
B
16 15 14 13 12 11 10 9
PIN 7 = V
EE
PIN 8 = GND
6
ENABLE
1 2 3 4 567 8
Y0 Y2 Y Y3 Y1 Enable V GND
EE