MC74HCT4051A_11 Datasheet, PDF (11/16 Pages) ON Semiconductor – Analog Multiplexers / Demultiplexers

MC74HCT4051A, MC74HCT4052A, MC74HCT4053A
+5V
+5V
ANALOG
16
ANALOG
+5V
ON
-5V
SIGNAL
SIGNAL
-5V
6
11
TO EXTERNAL CMOS
7
10
CIRCUITRY 0 to 5V
8
9
DIGITAL SIGNALS
-5V
Figure 21. Application Example
V_CC
V_CC
V_CC
D_x
16
D_x
ON/OFF
D_x
D_x
V_EE
V_EE
7
8
V_EE
Figure 22. External Germanium or
Schottky Clipping Diodes
+5V
+5V
ANALOG
16
ANALOG
+5V
ON/OFF
V_EE
SIGNAL
SIGNAL
+5V
V_EE
HC405x _*
RRR
+5V
+5V
ANALOG
16
ANALOG
+5V
ON/OFF
V_EE
SIGNAL
SIGNAL
V_EE
HCT405x
+5V
6
11
7
10
8
9
LSTTL/NMOS
CIRCUITRY
V_EE
* 2K ≤ R ≤ 10K
6
11
7
10
8
9
V_EE
LSTTL/NMOS
CIRCUITRY
a. Using Pull−Up Resistors with a HC Device
b. Using HCT Interface
Figure 23. Interfacing LSTTL/NMOS to CMOS Inputs
11
A
LEVEL
SHIFTER
13
X0
14
X1
10
B
LEVEL
SHIFTER
15
X2
12
X3
9
C
LEVEL
SHIFTER
1
X4
5
X5
6
ENABLE
LEVEL
SHIFTER
2
X6
4
X7
3
X
Figure 24. Function Diagram, HCT4051A
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11