LM1881 Datasheet | National Semiconductor

Description The LM1881 Video sync separator extracts timing information including posite and vertical sync burst back porch timing and odd even field information from standard negative 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 Y Y Y Y Y Y Y Y Y AC coupled posite input signal l 10 k X input resistance k 10 m A power supply drain current posite sync and vertical outputs Odd even field output Burst gate back porch output Horizontal scan rates to 150 k Hz Edge triggered vertical output Default triggered vertical output for non-standard video signal (video games-home puters) Connection Diagram LM1881N TL H 9150 - 1 Order Number LM1881M or LM1881N 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 C1995 National Semiconductor Corporation TL H 9150 RRD-B30M115 Printed in U S A Absolute Maximum Ratings If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Supply Voltage Input Voltage Output Sink Currents Pins 1 3 5 Output Sink Current Pin 7 Package Dissipation (Note 1) Operating Temperature Range 13 2V 3 Vpp (VCC e 5V) 6 Vpp (VCC t 8V) 5 m A 2 m A 1100 m W 0 C b 70 C Storage Temperature Range ESD Susceptibility (Note 2) Soldering Information Dual-In-Line Package (10 sec ) Small Outline Package Vapor Phase (60 sec ) Infrared (15 sec ) b 65 C to a 150 C 2 k V 260 C 215 C 220 C See AN-450 ‘‘Surface...