DRIVING_LED_ARRAY

Published:2009/7/5 22:52:00 Author:May | From:SeekIC

National MM74C908/MM74C918 dual MOS driver has sections connected as Sdlmitt-trigger oscillator,with R1 and R2 used to generate hysteresis,R3 and C are inverting feedback timing elements, and R4 is pulldown load for first driver. Output current drive capability is greater than 250 mA making circuit suitable for driving array of LEDs or lamps,- CMOS Databook, National Semiconductor,Santa Clara,CA,1977,p 5-38－5-49.



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