Product Summary

The LM1881N Video sync separator extracts timing information including composite 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 of LM1881N is produced on the rising edge of the first serration in the vertical sync period. A default vertical output of LM1881N 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.

Parametrics

LM1881N absolute maximum ratings: (1)Supply Voltage: 13.2V; (2)Input Voltage: 3 VP-P (VCC = 5V), 6 VP-P (VCC ≥ 8V); (3)Output Sink Currents; Pins, 1, 3, 5: 5 mA; (4)Output Sink Current; Pin 7: 2 mA; (5)Package Dissipation: 1100 mW; (6)Storage Temperature Range: -65℃ to +150℃; (7)ESD Susceptibility: 2 kV; (8)Dual-In-Line Package (10 sec.): 260℃; (9)Small Outline Package Vapor Phase (60 sec.): 215℃; (10)Infrared (15 sec.): 220℃.

Features

LM1881N features: (1)AC coupled composite input signal; (2)>10 kΩ input resistance; (3)<10 mA power supply drain current; (4)Composite sync and vertical outputs; (5)Odd/even field output; (6)Burst gate/back porch output; (7)Horizontal scan rates to 150 kHz; (8)Edge triggered vertical output; (9)Default triggered vertical output for non-standard video signal (video games-home computers); (10)-40℃ to +85℃ operation (LM1881-X).

Diagrams

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
LM1881N
LM1881N
National Semiconductor (TI)
Video ICs
Data Sheet
0-320: $1.26
320-520: $1.10
520-1000: $0.88
1000-2520: $0.83
LM1881N/NOPB
LM1881N/NOPB
National Semiconductor (TI)
Video ICs
Data Sheet
0-1: $1.76
1-25: $1.42
25-100: $1.29
100-250: $1.16