MC74LVX8051 ON Semiconductor, MC74LVX8051 Datasheet - Page 9

• Manufacturer Part Number: MC74LVX8051
• Description: Analog Multiplexer/Demultiplexer
• Manufacturer: ON Semiconductor

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V CC or GND logic levels. V CC being recognized as a logic
high and GND being recognized as a logic low. In this
example:
supply voltage V CC . The positive peak analog voltage
should not exceed V CC . Similarly, the negative peak analog
voltage should not go below GND. In this example, the
difference between V CC and GND is five volts. Therefore,
using the configuration of Figure 15, a maximum analog
signal of five volts peak–to–peak can be controlled. Unused
analog inputs/outputs may be left floating (i.e., not
f in
f in
The Channel Select and Enable control pins should be at
The maximum analog voltage swing is determined by the
Figure 14a. Total Harmonic Distortion, Test Set–Up
0.1 F
0.1 F
R L
Figure 12. Crosstalk Between Any Two
V IS
V IS
R L
V CC = +5V = logic high
*Includes all probe and jig capacitance
GND = 0V = logic low
6
8
Switches, Test Set–Up
6
8
*Includes all probe and jig capacitance
ON
OFF
ON
V CC
16
16
R L
R L
V OS
C L *
APPLICATIONS INFORMATION
C L *
DISTORTION
METER
R L
TO
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MC74LVX8051
V OS
C L *
9
connected). However, tying unused analog inputs and
outputs to V CC or GND through a low value resistor helps
minimize crosstalk and feedthrough noise that may be
picked up by an unused switch.
requirement. The only constraints on the power supplies are
that:
are anticipated on the analog channels, external Germanium
or Schottky diodes (D x ) are recommended as shown in
Figure 16. These diodes should be able to absorb the
maximum anticipated current surges during clipping.
– 100
– 10
– 20
– 30
– 40
– 50
– 60
– 70
– 80
– 90
Although used here, balanced supplies are not a
When voltage transients above V CC and/or below GND
0
Figure 13. Power Dissipation Capacitance,
1.0
Figure 14b. Plot, Harmonic Distortion
ANALOG I/O
FUNDAMENTAL FREQUENCY
V CC – GND = 2 to 6 volts
V CC
Test Set–Up
FREQUENCY (kHz)
CHANNEL SELECT
6
8
ON/OFF
OFF/ON
2.0
V CC
16
11
DEVICE
SOURCE
A
COMMON O/I
V CC
NC
3.125