MC74HC4316A ON Semiconductor, MC74HC4316A Datasheet - Page 9

• Manufacturer Part Number: MC74HC4316A
• Description: Quad Analog Switch/Multiplexer/Demultiplexer
• Manufacturer: ON Semiconductor

logic levels, V
being recognized as a logic low. Unused analog
inputs/outputs may be left floating (not connected).
However, it is advisable to tie unused analog inputs and
outputs to V
minimizes crosstalk and feedthrough noise that may be
picked up by the unused I/O pins.
the supply voltages V
voltage should not exceed V
analog voltage should not go below V
below, the difference between V
+ 6 V
−6 V
The Enable and Control pins should be at V
The maximum analog voltage swings are determined by
−6 V
CC
CC
ANALOG I/O
or V
being recognized as logic high and GND
+ 6 V
EE
CC
through a low value resistor. This
and V
Figure 16.
SELECTED
CONTROL
INPUT
V
8
CC
EE
ON
. Similarly, the negative peak
EE
. The positive peak analog
16
− 100
−10
−20
−30
−40
−50
−60
−70
−80
−90
CC
ANALOG O/I
0
EE
and V
V
CC
1.0
. In the example
Figure 15. Plot, Harmonic Distortion
ENABLE CONTROL
APPLICATIONS INFORMATION
= 6 V
(V
EE
CC
CC
INPUTS
FUNDAMENTAL FREQUENCY
OR GND)
is 12 V.
or GND
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MC74HC4316A
+ 6 V
−6 V
FREQUENCY (kHz)
9
2.0
Therefore, using the configuration in Figure 16, a maximum
analog signal of twelve volts peak−to−peak can be
controlled.
anticipated on the analog channels, external diodes (Dx) are
recommended as shown in Figure 17. These diodes should
be small signal, fast turn−on types able to absorb the
maximum anticipated current surges during clipping. An
alternate method would be to replace the Dx diodes with
MOSORBs (MOSORBt is an acronym for high current
surge protectors). MOSORBs are fast turn−on devices
ideally suited for precise dc protection with no inherent wear
out mechanism.
When voltage transients above V
DEVICE
SOURCE
Figure 17. Transient Suppressor Application
D
D
x
x
V
EE
V
CC
V
CC
SELECTED
CONTROL
INPUT
V
3.0
EE
ON
16
CC
V
CC
and/or below V
ENABLE CONTROL
(V
V
CC
EE
D
D
INPUTS
x
x
OR GND)
EE
are