参数资料
型号: LA7954
元件分类: 多路复用及模拟开关
英文描述: 4-CHANNEL, AUDIO/VIDEO SWITCH, SIP9
封装: SIP-9
文件页数: 3/4页
文件大小: 64K
代理商: LA7954
LA7954
No.3352-3/4
Input/Output Equivalent Circuit
1
VCC
GND
4.8V
4.1V
GND
VCC
6.3V
2, 3
4, 6, 8, 9
1k
Ω
20k
Ω
1.5k
Ω
5k
Ω
7.5k
Ω
GND
2mA
Block Diagram
1
2
3
4
5
6
7
8
9
VIDEO OUT
control
AB
VIN1 GND VIN2VIN3VIN4
VCC
video switch
(4 input 1 output)
Test Circuit
LA7954
9
8
7
6
5
4
3
2
1
+
33
μ
F
10
μ
F
+
75
Ω
1000pF
S8
V4
V3
V2
V1
10
μ
F
+
75
Ω
S7
10
μ
F
+
75
Ω
S6
10
μ
F
+
75
Ω
S5
S3
LH
S2
H
dc output
Spectrum analyzing
valve voltmeter,
oscilloscope
VCC
+12V
L
E1
E2
*
* : Connect the bypass capacitor for VCC as close to pin 7 as possible.
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