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| 型号： | MAX4399CTK+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 11/33页 |
| 文件大小： | 0K |
| 描述： | IC SW A/V SCART CON 68-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 开关 |
| 应用： | 接收器，机顶盒，电视 |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 68-TQFN 裸露焊盘 |
| 供应商设备封装： | 68-TQFN-EP（10x10） |
| 包装： | 带卷 (TR) |
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Hot-Plug of SCART Connectors—Floating
Chassis Discharge
The MAX4399 features high-ESD protection on all
SCART inputs and outputs, and requires no external
transient voltage suppressor (TVS) devices to protect
against floating chassis discharge. Some set-top boxes
have a floating chassis problem in which the chassis is
not connected to earth ground. As a result, the chassis
can charge up to 500V. When a SCART cable is con-
nected to the SCART connector, the charged chassis
can discharge through a signal pin. The equivalent cir-
cuit is a 2200pF capacitor charged to 311V connected
through less than 0.1
to a signal pin. The MAX4399 is
soldered on the PC board when it experiences such a
discharge. Therefore, the current spike flows through
the ESD protection diodes and is absorbed by the sup-
ply bypass capacitors, which have high capacitance
and low ESR.
MAX4399
Audio/Video Switch for Three SCART
Connectors
______________________________________________________________________________________
19
CLAMP
LOWPASS FILTER
D/A
CVBS
A = +1V/V
IN1
OUT1
0.1
F
ENC_Y/CVBS_IN
CLAMP
LOWPASS FILTER
D/A
Y
A = +1V/V
IN2
OUT2
0.1
F
ENC_Y_IN
BIAS
LOWPASS FILTER
D/A
C
A = +1V/V
IN3
OUT3
0.1
F
ENC_C_IN
CLAMP
LOWPASS FILTER
D/A
R
A = +1V/V
IN4
OUT4
0.1
F
ENC_R/C_IN
CLAMP
LOWPASS FILTER
D/A
G
A = +1V/V
IN5
OUT5
0.1
F
ENC_G_IN
CLAMP
LOWPASS FILTER
D/A
B
A = +1V/V
IN6
OUT6
0.1
F
ENC_B_IN
MPEG DECODER
MAX7440
MAX4399
G_VID
+5V
V_VID
+5V
0.1
F1F
Figure 9. MPEG Decoder Outputs Filtered by the MAX7440 Before Being Passed to the MAX4399
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX4399CTK-TD | 功能描述:视频开关 IC RoHS:否 制造商:Texas Instruments 开关数量:4 开启电阻（最大值）:12 Ohms 传播延迟时间: 开启时间（最大值）: 关闭时间（最大值）: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:WQFN-42 封装:Reel |
| MAX4399EVKIT | 功能描述:视频 IC 开发工具 RoHS:否 制造商:Texas Instruments 产品:Evaluation Boards 类型:YPbPr to RGBHV Converters 工具用于评估:LMH1251 工作电源电压:5 V |
| MAX439CPA | 制造商:Maxim Integrated Products 功能描述: |
| MAX439CSA-W | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX439EPA | 制造商:Maxim Integrated Products 功能描述:CONTACT FACTORY - Rail/Tube |
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