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參數資料
| 型號： | MC74HC4066N |
| 廠商： | MOTOROLA INC |
| 元件分類： | 運動控制電子 |
| 英文描述： | Quad Analog Switch/Multiplexer/Demultiplexer |
| 中文描述： | QUAD 1-CHANNEL, SGL POLE SGL THROW SWITCH, PDIP14 |
| 封裝： | PLASTIC, DIP-14 |
| 文件頁數： | 8/12頁 |
| 文件大小： | 346K |
| 代理商： | MC74HC4066N |
MC54/74HC4066
MOTOROLA
High–Speed CMOS Logic Data
DL129 — Rev 6
8
0
–10
–20
–30
–40
–50
1.0
2.0
FREQUENCY (kHz)
d
–60
–70
–80
–90
FUNDAMENTAL FREQUENCY
DEVICE
SOURCE
Figure 15. Plot, Harmonic Distortion
3.0
APPLICATION INFORMATION
The ON/OFF Control pins should be at VCC or GND logic
levels, VCC being recognized as logic high and GND 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 VCC or GND
through a low value resistor. This minimizes crosstalk and
feedthrough noise that may be picked–up by the unused I/O
pins.
The maximum analog voltage swings are determined by
the supply voltages VCC and GND. The positive peak analog
voltage should not exceed VCC. Similarly, the negative peak
analog voltage should not go below GND. In the example
below, the difference between VCC and GND is twelve volts.
Therefore, using the configuration in Figure 16, a maximum
analog signal of twelve volts peak–to–peak can be con-
trolled.
When voltage transients above VCC and/or below GND
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
MO sorbs (Motorola high current surge protectors).
MO sorbs are fast turn–on devices ideally suited for precise
DC protection with no inherent wear out mechanism.
ANALOG O/I
ON
14
VCC = 12 V
ANALOG I/O
+ 12 V
0 V
+ 12 V
0 V
OTHER CONTROL
INPUTS
(VCC OR GND)
ON
16
VCC
Dx
Dx
VCC
Dx
Figure 16. 12 V Application
Figure 17. Transient Suppressor Application
7
SELECTED
CONTROL
INPUT
Dx
OTHER CONTROL
INPUTS
(VCC OR GND)
7
SELECTED
CONTROL
INPUT
VCC
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