LM1881

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SNLS384F – FEBRUARY 1995 – REVISED MARCH 2013

LM1881 Video Sync Separator

Check for Samples: LM1881

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FEATURES

DESCRIPTION

The LM1881 Video sync separator extracts timing

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•

AC Coupled Composite Input Signal

information including composite and vertical sync,

•

>10 k

Ω Input Resistance

burst/back

porch

timing,

and

odd/even

field

•

<10 mA Power Supply Drain Current

information from standard negative going sync NTSC,

•

Composite Sync and Vertical Outputs

0.5V to 2V p-p. The integrated circuit is also capable

•

Odd/Even Field Output

of providing sync separation for non-standard, faster

•

Burst Gate/Back Porch Output

horizontal rate video signals. The vertical output is

produced on the rising edge of the first serration in

•

Horizontal Scan Rates to 150 kHz

the vertical sync period. A default vertical output is

•

Edge Triggered Vertical Output

produced after a time delay if the rising edge

•

Default Triggered Vertical Output for Non-

mentioned above does not occur within the externally

standard Video Signal (Video Games-Home

set delay period, such as might be the case for a

Computers)

non-standard video signal.

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PAL in this datasheet refers to European broadcast TV

standard “Phase Alternating Line”, and not to Programmable

Array Logic.

Connection Diagram

Figure 1. LM1881N

See Package Number D0008A or P0008E

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam

during storage or handling to prevent electrostatic damage to the MOS gates.

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PRODUCTION DATA information is current as of publication date.

Copyright © 1995–2013, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.