mc74hc4851a ON Semiconductor, mc74hc4851a Datasheet - Page 6

• Manufacturer Part Number: mc74hc4851a
• Description: Analog Multiplexer/demultiplexer With Injection Current Effect Control
• Manufacturer: ON Semiconductor

Sensor
Sensor
(8x Identical Circuitry)
(8x Identical Circuitry)
to suppress injection current into a standard HC4051 multiplexer
Requires 32 passive components and one extra 6V regulator
Figure 9. Injection Current Coupling Specification
V
5V
in
Any Disabled Channel
R
Solution by applying the HC4851A multiplexer
2 < V
MC74HC4851A, MC74HC4852A
S
Enabled Channel
V
SS
SS
Figure 11. MC74HC4851A Solution
or V
< V
Figure 10. Actual Technology
in
CC
I
in
1 < V
Channel 1
Channel 2
Channel 3
Channel 4
Channel 5
Channel 6
Channel 7
Channel 8
Channel 1
Channel 2
Channel 3
Channel 4
Channel 5
Channel 6
Channel 7
Channel 8
< V
http://onsemi.com
HC4051A
HC4851A
in
CC
2
Common Out
Common Out
6V
5V
6
V
V
CC
CC
5V
V
CC
= 5V
V
out
V
A/D − Input
V
A/D − Input
CC
CC
Microcontroller
Microcontroller
= V
in
1 ±VD
out