NTE1739 Datasheet | NTE Electronics

Features : D Horizontal Oscillator D Vertical Countdown D posite Blanking Output D Burst- Gate Output D Horizontal Ramp Generator D Internal Shunt Regulator Description : The NTE1739 is a video sync system in a 16- Lead DIP type package designed for use in television, monitor or video display products. The NTE1739 contains a horizontal phase- locked oscillator and vertical countdown. It also features posite blanking and burst- gate outputs which, when externally summed, produce the sandcastle pulse necessary for the operation of most chroma/luma circuits. The NTE1739 is intended for use in 525- line systems and operates with standard or nonstandard input signals. An automatic mode- recognition circuit forces operation into the nonsynchronous mode for nonstandard sync input signals. Absolute Maximum Ratings: DC Supply Current, Pin7 - - - - - - - - - - - . . . 50m A Input Voltage (All Inputs) - - - - - - - - - - - 1V to V+ + 1V Device Dissipation (TA ≤ +85°C) - - - - - - - - - - 900m W Derate Linearly Above 85°C - - - - - - - - - . 14m W/°C Operating Ambient Temperature Range - - - - - - - . . . - 40° to +85°C Storage Temperature Range - - - - - - - - - . . - 65° to +150°C Lead Temperature (During Soldering, 1/16 ±1/32 in. (1.59 ± 0.79mm) from case, 10s max) . . . +265°C Circuit Operation The master oscillator operates at 8 times the horizontal rate, f H, as determined by the external LC connected between Pin5 and Pin6. The master oscillator is divided by 2, 4, and 8 and is then fed to the horizontal output amplifier and also to a 10- stage...