Datasheet

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    
   
SCLS573 − MARCH 2004
8
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
APPLICATION INFORMATION
HC4052A
V
CC
Microcontroller
Channel 1Y0
Channel 1Y1
Channel 1Y2
Channel 1Y3
Channel 2Y0
Channel 2Y1
Channel 2Y2
Channel 2Y3
2-COM
5 V
A/D − Input 2
V
CC
(8x Identical
Circuitry)
Sensor
1-COM
A/D − Input 1
Figure 3. Solution by Applying the HC4852 Multiplexer
+
+
+
N − Substrate (on V
CC
potential)
Disabled Analog Mux Input
V
In
> V
CC
+ 0.7 V
Gate = V
CC
(Disabled)
Common Analog Output
V
out
> V
CC
P+ P+
Figure 4. Diagram of Bipolar Coupling Mechanism
(Appears if V
In
Exceeds V
CC
, Driving Injection Current Into the Substrate)