The EL1881 video sync separator is manufactured using Elantec's high performance analog CMOS process. This device extracts sync timing information from both standard and non-standard video input. It provides composite sync, vertical sync, burst/back porch timing, and odd/even field detection. Fixed 70mV sync tip slicing provides sync edge detection when the video input level is between 0. 5VP-P and -2VP-P (sync tip amplitude 143mV to 572mV). A single external resistor sets all internal timing to adjust for various video standards. The composite sync output follows video in sync pulses and a vertical sync pulse is output on the rising edge of the first vertical serration following the vertical pre-equalizing string. For non-standard vertical inputs, a default vertical pulse is output when the vertical signal stays low for longer than the vertical sync default delay time. The odd/even output indicates field polarity detected during the vertical blanking interval. The EL1881 is plug-in compatible with the industry-standard LM1881 and can be substituted for that part in 5V applications with lower required supply current. The EL1881 is available in the 8 Ld PDIP and SOIC packages and is specified for operation over the full -40°C to +85°C temperature range.


  • NTSC, PAL, SECAM, non-standard video sync separation
  • Fixed 70mV slicing of video input levels from 0.5VP-P to 2VP-P
  • Low supply current - 1.5mA typ.
  • Single +5V supply
  • Composite, vertical sync output
  • Odd/even field output
  • Burst/back porch output
  • Available in 8 Ld PDIP and SOIC packages
  • Pb-free available (RoHS Compliant)


  • Video amplifiers
  • PCMCIA applications
  • A/D drivers
  • Line drivers
  • Portable computers
  • High-speed communications
  • RGB applications
  • Broadcast equipment
  • Active filtering

tuneProduct Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Last Time Buy SOICN Tube 97
Last Time Buy SOICN Reel 2500
Last Time Buy SOICN Reel 1000
Last Time Buy SOICN Reel 250


Title language Type Format File Size Date
Datasheets & Errata
star EL1881 Datasheet Datasheet PDF 685 KB
User Guides & Manuals
EL1881, EL1883 Evaluation Boards User Guide Guide PDF 241 KB
Application Notes & White Papers
AN1566: Video Fader With DCP-Digital Control Application Note PDF 491 KB
AN1695: Basics of Video: from Simple Analog to HDTV Application Note PDF 644 KB
AN1099: A Simple Circuit Removes Sync Application Note PDF 311 KB
AN9738: Video Module Interface (VMI) for ICs Application Note PDF 320 KB
AN9759: Signal Processing Blocks - A Tutorial Application Note PDF 1002 KB
AN9764: PALplus Overview Application Note PDF 250 KB
AN9644: Composite Video Separation Techniques Application Note PDF 2.79 MB
AN9741: Basic DACs for Electronic Engineers Application Note PDF 410 KB
PLC21035 - End of Life Notice Product Life Cycle Notice PDF 1.17 MB
PA14042 - Minimum Line Quantity Change Product Advisory PDF 363 KB
PCN12085B - Alternate Manufacturing Site for Assembly of the Listed Intersil SOIC Packaged Products - update to remove select products Product Change Notice PDF 372 KB
PCN12085 - 8l, 14l, 16l SOIC w/ Gold Bond Wire @ ATP as Alternate Assembly Site Product Change Notice PDF 152 KB
PIN19028 - Q3 Cy 19 Price Increase Notice Price Increase Notice PDF 208 KB