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參數(shù)資料
| 型號(hào)： | TMDS341A_07 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 3-TO-1 DVI/HDMI SWITCH |
| 中文描述： | 3比1個(gè)DVI / HDMI開關(guān) |
| 文件頁(yè)數(shù)： | 21/27頁(yè) |
| 文件大小： | 1308K |
| 代理商： | TMDS341A_07 |
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DDC Signal Path
Observed I
2
C bus voltage is dependent on bus resistance, capacitance, and time. The transient bus voltage,
when charging from a low state to a high state, can be calculated using equation (1).
TMDS341A
SLLS702B–MAY 2006–REVISED MARCH 2007
APPLICATION INFORMATION (continued)
Figure 38. Eye Diagram at Output 10-m 28-AWG Cable
vs TP2 Eye Mask
Figure 39. Eye Diagram Recovered by TMDS341A vs TP2
Eye Mask
V(t) = V
DD
(1 – e
–t/RC
)
(1)
Where:
t is the time since the charging started
V
DD
is the pull-up termination voltage
R is the total resistance on the I
2
C link
C is the total capacitance on the I
2
C link
In the I
2
C bus specification, version 2.1, the high-level threshold voltage is V
IH
= 0.7 V
DD
, and the low-level
threshold voltage is V
IL
= 0.3 V
DD
.
From equation (1), the times to charge from a bus voltage of 0 V to the V
IH
and V
IL
levels are:
t
IH
= 1.204 × RC
t
IL
= 0.357 × RC
The bus rise time (from 0.3 V
DD
to 0.7 V
DD
) is then given by equation (2):
t
r(30-70)
= t
IH
– t
IL
= 0.847 × RC
(2)
The TMDS341A can be easily applied in stand-alone switch boxes and digital displays. The following sections
show the bus lengths that can be supported in each case.
Maximum Bus Lengths for Switch Applications
Figure 40
shows the TMDS341A being used as a stand-alone switch. Both pull-up resistors are decided by the
source and sink equipment. A 1.5-k
resistor at the source and a 47-k
resistor at the sink are recommended.
21
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TMDS341APFC | 功能描述:視頻開關(guān) IC 3-TO-1 DVI/HDMI Sw RoHS:否 制造商:Texas Instruments 開關(guān)數(shù)量:4 開啟電阻（最大值）:12 Ohms 傳播延遲時(shí)間: 開啟時(shí)間（最大值）: 關(guān)閉時(shí)間（最大值）: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:WQFN-42 封裝:Reel |
| TMDS341APFCG4 | 功能描述:多路器開關(guān) IC 3-TO-1 DVI/HDMI Sw RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 開關(guān)數(shù)量:4 開啟電阻（最大值）:7 Ohms 開啟時(shí)間（最大值）: 關(guān)閉時(shí)間（最大值）: 傳播延遲時(shí)間:0.25 ns 工作電源電壓:2.3 V to 3.6 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UQFN-16 |
| TMDS341APFCR | 功能描述:多路器開關(guān) IC 3-TO-1 DVI/HDMI Sw RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 開關(guān)數(shù)量:4 開啟電阻（最大值）:7 Ohms 開啟時(shí)間（最大值）: 關(guān)閉時(shí)間（最大值）: 傳播延遲時(shí)間:0.25 ns 工作電源電壓:2.3 V to 3.6 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UQFN-16 |
| TMDS341APFCRG4 | 功能描述:視頻開關(guān) IC 3-TO-1 DVI/HDMI Sw RoHS:否 制造商:Texas Instruments 開關(guān)數(shù)量:4 開啟電阻（最大值）:12 Ohms 傳播延遲時(shí)間: 開啟時(shí)間（最大值）: 關(guān)閉時(shí)間（最大值）: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:WQFN-42 封裝:Reel |
| TMDS341PFC | 功能描述:多路器開關(guān) IC 3-TO1 DVI/HDMI SWITCH RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 開關(guān)數(shù)量:4 開啟電阻（最大值）:7 Ohms 開啟時(shí)間（最大值）: 關(guān)閉時(shí)間（最大值）: 傳播延遲時(shí)間:0.25 ns 工作電源電壓:2.3 V to 3.6 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UQFN-16 |
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