SN28838

Solid-State Reliability Surface-Mount Package description The SN28838 is a monolithic integrated circuit designed to interface with the SN28837 PALtiming generator in order to generate the PAL-color timing signals. It receives inputs from the SN28837 and a 17-MHz oscillator and outputs the PAL-color subcarrier, color subcarrier delayed by 90 degrees, and burst-color-subcarrier signals, which are all 4.43-MHz outputs. The SN28838 is supplied in a 16-pin surfacemount package and is characterized for operation from 0°C to 40°C. logic symbol SN28838 PAL-COLOR SUBCARRIER GENERATOR SOCS029B – AUGUST 1991 NS PACKAGE (TOP VIEW) GND VDD1 PD LSW VCC GND CLK13M VDD2 1 2 3 4 5 6 7 8 16 X1 15 X2 14 VCC 13 LOCK 12 PLLFIL 11 BSC 10 SC(90) 9 SC PD LSW CLK13M X2 X1 3 4 7 15 16 PAL CLR SUBCARR GEN SN28838 LSW SC (90) BSC H SC – 90° SC – 90° L SC + 90° SC + 180° Pwr Dwn Phase Del Clock Xtal Lock Xtal G SC G SC (90) G BSC 13 LOCK 9 SC 10 SC (90) 11 BSC This device contains circuits to protect its inputs and outputs against damage due to high static voltages or electrostatic fields. These circuits have been qualified to protect this device against electrostatic discharges (ESD) of up to 2 kV according to MIL-STD-883C, Method 3015; however, precautions should be taken to avoid application of any voltage higher than maximum-rated voltages to these high-impedance circuits. During storage or handling, the device leads should be shorted together or the device should be placed in co...