DATASHEET EL4581 FN7172 Rev 2.00 Sync Separator, 50% Slice, S-H, Filter November 12, 2010 The EL4581 extracts timing information from standard Features negative going video sync found in NTSC, PAL and SECAM NTSC, PAL and SECAM sync separation broadcast systems. It can also be used in non standard formats and with computer graphics systems at higher scan Single supply, +5V rates, by adjusting a single external resistor. When the input Precision 50% slicing, internal caps does not have correct serration pulses in the vertical interval, Built-in color burst filter a default vertical output is produced. Decodes non-standard verticals Outputs are composite sync, vertical sync, burst/back porch output, and odd/even output. The later operates only in Pin compatible with LM1881 interlaced scan formats. Low power The EL4581 provides a reliable method of determining Typically 1.5mA supply current correct sync slide level by setting it to the mid-point between sync tip and blanking level at the back porch. This 50% level Resistor programmable scan rate is determined by two internal self timing sample and hold Few external components circuits that track sync tip and back porch levels. This also Available in 8 Ld PDIP and SOIC packages provides a degree of hum and noise rejection to the input signal, and compensates for varying input levels of 0.5V P-P Pb-free available (RoHS compliant) to 2.0V . P-P Applications A built in linear phase, third order, low pass filter attenuates the chroma signal in color systems to prevent incorrectly set Video special effects color burst from disturbing the 50% sync slide. Video test equipment This device may be used to replace the industry standard Video distribution LM1881, offering improved performance and reduced power Displays consumption. Imaging The EL4581 video sync separator is manufactured using Elantecs high performance analog CMOS process. Video data capture Video triggers Pinout EL4581 Ordering Information (8 LD SOIC, PDIP) TOP VIEW PART PART PKG. NUMBER MARKING TEMP. RANGE PACKAGE DWG. COMPOSITE 1 8 VDD 5V SYNC OUT EL4581CN EL4581CN -40C to +85C 8 Ld PDIP MDP0031 COMPOSITE 2 7 ODD/EVEN OUTPUT VIDEO IN EL4581CS* 4581CS -40C to +85C 8 Ld SOIC MDP0027 VERTICAL RSET 3 6 SYNC OUT EL4581CSZ* 4581CSZ -40C to +85C 8 Ld SOIC MDP0027 BURST/BACK GND (Note) (Pb-free) 4 5 PORCH OUTPUT *Add -T7 or -T13 suffix for tape and reel. Please refer to TB347 for details on reel specifications. NOTE: These Intersil Pb-free plastic packaged products employ special Pb-free material sets molding compounds/die attach materials and 100% matte tin plate PLUS ANNEAL - e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. Demo Board A dedicated demo board is not available. However, this device can be placed on the EL4584/5 Demo Board. FN7172 Rev 2.00 Page 1 of 10 November 12, 2010EL4581 Absolute Maximum Ratings (T = +25C) Thermal Information A V Supply 7V Maximum Power Dissipation . See Curves CC Storage Temperature -65C to +150C Maximum Junction Temperature . +150C Pin Voltages -0.5V to V +0.5V Pb-free reflow profile see link below CC