MC74HCT4051A 데이터 시트보기 (PDF) - ON Semiconductor
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MC74HCT4051A Datasheet PDF : 18 Pages
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MC74HCT4051A, MC74HCT4052A, MC74HCT4053A
VIS
RL
fin
0.1mF
16
ON
OFF
VEE
RL
RL
6
7
8
VOS
CL* RL
CL*
*Includes all probe and jig capacitance
Figure 18. Crosstalk Between Any Two
Switches, Test Set−Up
VCC
ANALOG I/O
VCC
A
16
ON/OFF
OFF/ON
COMMON O/I
NC
6
7
VEE
8
VCC
11
CHANNEL SELECT
Figure 19. Power Dissipation Capacitance,
Test Set−Up
0
VIS
VCC
VOS
- 10
0.1mF
16
TO
- 20
fin
ON
DISTORTION
- 30
RL
CL*
METER
- 40
- 50
- 60
6
7
- 70
8
- 80
VEE
*Includes all probe and jig capacitance
- 90
- 100
Figure 20.
Figure 20a. Total Harmonic Distortion, Test Set−Up
FUNDAMENTAL FREQUENCY
DEVICE
SOURCE
1.0
2.0
FREQUENCY (kHz)
Figure 20b. Plot, Harmonic Distortion
3.125
APPLICATIONS INFORMATION
The maximum analog voltage swings are determined by
the supply voltages VCC and VEE. The positive peak analog
voltage should not exceed VCC. Similarly, the negative peak
analog voltage should not go below VEE. In this example,
the difference between VCC and VEE is ten volts. Therefore,
using the configuration of Figure 21, a maximum analog
signal of ten volts peak−to−peak can be controlled. Unused
analog inputs/outputs may be left floating (i.e., not
connected). However, tying unused analog inputs and
outputs to VCC or GND through a low value resistor helps
minimize crosstalk and feed−through noise that may be
picked up by an unused switch.
Although used here, balanced supplies are not a
requirement. The only constraints on the power supplies are
that:
VCC − GND = 2 to 6 V
VEE − GND = 0 to −6 V
VCC − VEE = 2 to 12 V
and VEE ≤ GND
When voltage transients above VCC and/or below VEE are
anticipated on the analog channels, external Germanium or
Schottky diodes (Dx) are recommended as shown in
Figure 22. These diodes should be able to absorb the
maximum anticipated current surges during clipping.
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