LM1881是TI公司的一款视频定时产品，LM1881是视频同步分离器，本页介绍了LM1881的产品说明、应用、特性等，并给出了与LM1881相关的TI元器件型号供参考。
LM1881 - 视频同步分离器 - 视频定时 - 视频：广播和专业 - TI公司（Texas Instruments，德州仪器）
- AC Coupled Composite Input Signal
- >10-kΩ Input Resistance
- <10-mA Power Supply Drain Current
- Composite Sync and Vertical Outputs
- Odd and Even Field Output
- Burst Gate or Back Porch Output
- Horizontal Scan Rates to 150 kHz
- Edge Triggered Vertical Output
- Default Triggered Vertical Output for Non-Standard Video Signal (Video Games-Home Computers)
- Video Cameras and Recorders
- Broadcasting Systems
- Set-Top Boxes
- Home Entertainment
- Computing and Gaming Applications
The LM1881 Video sync separator extracts timing information including composite and vertical sync, burst or back porch timing, and odd and even field information from standard negative going sync NTSC, PAL PAL in this datasheet refers to European broadcast TV standard “Phase Alternating Line”, and not to Programmable Array Logic. and SECAM video signals with amplitude from 0.5-V to 2-V 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.
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
|---|---|---|
| LM1881 | SOIC (8) | 4.90 mm × 3.91 mm |
| PDIP (8) | 9.81 mm × 6.35 mm |
