mc74lvx4066 ON Semiconductor, mc74lvx4066 Datasheet - Page 9

• Manufacturer Part Number: mc74lvx4066
• Description: Quad Analog Switch/multiplexer/demultiplexer
• Manufacturer: ON Semiconductor

levels, V
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
GND through a low value resistor. This 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 GND. In the example
below, the difference between V
+ 6.0 V
The ON/OFF Control pins should be at V
The maximum analog voltage swings are determined by
0 V
CC
being recognized as logic high and GND being
Figure 16. 6.0 V Application
ANALOG I/O
CC
and GND. The positive peak analog
CC
SELECTED
CONTROL
INPUT
7
. Similarly, the negative peak
ON
CC
14
−10
−20
−30
−40
−50
−60
−70
−80
−90
and GND is six volts.
0
ANALOG O/I
1.0
V
CC
Figure 15. Plot, Harmonic Distortion
CC
APPLICATION INFORMATION
OTHER CONTROL
= 6.0 V
or GND logic
(V
CC
FUNDAMENTAL FREQUENCY
INPUTS
OR GND)
http://onsemi.com
MC74LVX4066
CC
or
+ 6.0 V
0 V
FREQUENCY (kHz)
9
2.0
Therefore, using the configuration in Figure 16, a maximum
analog signal of six volts peak−to−peak can be controlled.
are 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 (Mosorb
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
V
CC
D
D
x
x
is an acronym for high current surge
V
CC
3.0
SELECTED
CONTROL
INPUT
7
ON
16
CC
and/or below GND
V
CC
OTHER CONTROL
(V
CC
INPUTS
D
D
x
x
OR GND)