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參數(shù)資料
| 型號： | LMH1251MTX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 運動控制電子 |
| 英文描述： | YPBPR to RGB Decoder and 2:1 Video Switch |
| 中文描述： | 2-CHANNEL, AUDIO/VIDEO SWITCH, PDSO24 |
| 封裝： | TSSOP-24 |
| 文件頁數(shù)： | 2/10頁 |
| 文件大小： | 614K |
| 代理商： | LMH1251MTX |
Truth Table
TABLE 1. Input Select
Pin 24
0
1
OUT
RGBhv input Ch
YP
B
P
R
input Ch
TABLE 2.
Pin 23
0
0
1
1
Pin 22
0
1
*Outputs 0
*Outputs 1
SYNC
Bi-Level
Tri-Level
Bi-Level
Tri-Level
Format Detection
Manual
Manual
Auto
Auto
Decoding Scheme
480p
720p/180i
480p
720p/1080i
Note:
* When Pin 23 is set high, the LMH1251 is inAuto Mode, in which it can
detect the incoming video format (SD or HD) and apply the appropriate
color decoding and sync processing. WithAuto Mode, Pin 22 becomes
an output pin, and will either output a logic high or low to notify the user
of the format that is being detected by the LMH1251. If Pin 23 is set
low, the LMH1251 is in Manual Mode, in which the user must specify
TABLE 3. Power Save
the format with Pin 22. With Manual Mode, Pin 22 is an input pin. Since
Pin 22 is a bi-directional pin, care must be taken to not apply any
voltages to it when it is in the Auto Mode, in which it functions as an
output pin. The use of theAuto Mode with Pin 22 left floating is typically
recommended.
Pin 21
0
1
Low Power Mode
Disable
Enabled
Ordering Information
Package
Part Number
LMH1251MT
LMH1251MTX
Package Marking
Transport Media
61 Units/Rail
2.5k Units Tape and Reel
NSC Drawing
24-Pin TSSOP
LMH1251MT
MTC24
L
www.national.com
2
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LMH1251MTX/NOPB | 功能描述:視頻開關 IC RoHS:否 制造商:Texas Instruments 開關數(shù)量:4 開啟電阻（最大值）:12 Ohms 傳播延遲時間: 開啟時間（最大值）: 關閉時間（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 |
| LMH1297EVM | 功能描述:LMH1297 12G BIDIRECTIONAL I/O EV 制造商:texas instruments 系列:* 零件狀態(tài):在售 標準包裝:1 |
| LMH1980 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Auto-Detecting SD/HD/PC Video Sync Separator |
| LMH1980MM | 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述: |
| LMH1980MM/NOPB | 功能描述:視頻 IC AUTO-DETECT SD/HD/PC VIDEO SYNC SEPARATOR RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel |
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