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LM1881M-X 데이터시트(PDF) 1 Page - National Semiconductor (TI) |
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LM1881M-X 데이터시트(HTML) 1 Page - National Semiconductor (TI) |
1 / 12 page LM1881, LM1881-X Video Sync Separator General Description The LM1881 Video sync separator extracts timing informa- tion including composite and vertical sync, burst/back porch timing, and odd/even field information from standard nega- tive going sync NTSC, PAL* and SECAM video signals with amplitude from 0.5V to 2V p-p. The integrated circuit is also capable of providing sync separation for non-standard, faster horizontal rate video signals. The vertical output is produced on the rising edge of the first serration in the vertical sync period. A default vertical output is produced after a time delay if the rising edge mentioned above does not occur within the externally set delay period, such as might be the case for a non-standard video signal. Features n AC coupled composite input signal n > 10 k Ω input resistance n < 10 mA power supply drain current n Composite sync and vertical outputs n Odd/even field output n Burst gate/back porch output n Horizontal scan rates to 150 kHz n Edge triggered vertical output n Default triggered vertical output for non-standard video signal (video games-home computers) n -40˚C to +85˚C operation (LM1881-X) Connection Diagram LM1881N 00915001 Order Number LM1881M or LM1881N (0˚C to +70˚C) Order Number LM1881M-X or LM1881N-X (-40˚C to +85˚C) See NS Package Number M08A or N08E *PAL in this datasheet refers to European broadcast TV standard “Phase Alternating Line”, and not to Programmable Array Logic. June 2003 © 2003 National Semiconductor Corporation DS009150 www.national.com |
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