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参数资料
| 型号： | TMDS341APFCR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 多路复用及模拟开关 |
| 英文描述： | 3-CHANNEL, AUDIO/VIDEO SWITCH, PQFP80 |
| 封装： | GREEN, PLASTIC, TQFP-80 |
| 文件页数： | 11/27页 |
| 文件大小： | 1599K |
| 代理商： | TMDS341APFCR |
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APPLICATION INFORMATION
Supply Voltage
TMDS Inputs
TMDS Input Fail-Safe
VCC
RINT
TMDS
Receiver
TMDS
Driver
RT
Y
Z
A
B
AVCC
TMDS341A
TMDS Outputs
TMDS341A
VCC
GND
TMDS
Driver
AVCC
ZO = RT
RT
TMDS
Receiver
SLLS702B – MAY 2006 – REVISED MARCH 2007
All VCC pins can be tied to a single 3.3-V power source. A 0.01-F capacitor is connected from each VCC pin
directly to ground to filter supply noise.
Standard TMDS terminations are integrated on all TMDS inputs. External terminations are not required. Each
input channel contains an 8-dB equalization circuit to compensate for cable losses. The voltage at the TMDS
input pins must be limited per the absolute maximum ratings. An unused input should not be connected to
ground as this would result in excessive current flow damaging the device.
TMDS input pins do not incorporate fail-safe circuits. An unused input channel can be externally biased to
prevent output oscillation. One pin can be left open with the other grounded through a 1-k
resistor as shown in
Figure 34. TMDS Input Fail-Safe Recommendation
A 1% precision resister, 4.64-k
, connected from VSADJ to ground is recommended to allow the differential
output swing to comply with TMDS signal levels. The differential output driver provides a typical 10-mA current
sink capability, which provides a typical 500-mV voltage drop across a 50-
termination resistor.
Figure 35. TMDS Driver and Termination Circuit
As shown in Figure 35, if VCC (TMDS341A supply) and AVCC (sink termination supply) are powered, the TMDS
output signals are high impedance when OE is high. Normal operation is with both supplies active.
Also shown in Figure 35, if VCC is on and AVCC is off, the TMDS outputs source a typical 5-mA current through
each termination resistor to ground. The terminations consume a total of 10 mW of power independent of the
OE logical selection. When AVCC is powered on, normal operation (OE controls output impedance) is resumed.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TMDS341APFCRG4 | 功能描述:视频开关 IC 3-TO-1 DVI/HDMI Sw 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 |
| TMDS341PFC | 功能描述:多路器开关 IC 3-TO1 DVI/HDMI SWITCH RoHS:否 制造商:Texas Instruments 通道数量:1 开关数量:4 开启电阻（最大值）:7 Ohms 开启时间（最大值）: 关闭时间（最大值）: 传播延迟时间:0.25 ns 工作电源电压:2.3 V to 3.6 V 工作电源电流: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UQFN-16 |
| TMDS341PFCG4 | 功能描述:视频开关 IC 3-TO1 DVI/HDMI SWITCH 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 |
| TMDS341PFCR | 功能描述:视频开关 IC 3-TO1 DVI/HDMI SWITCH 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 |
| TMDS341PFCRG4 | 功能描述:视频开关 IC 3-TO1 DVI/HDMI SWITCH 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 |
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