CMos drive circuit used in LCD

Published:2011/4/25 2:49:00 Author:Nicole | Keyword: LCD, CMos drive | From:SeekIC

CD4054A, CD4055A or CD4056A CMOS directly drive 7 segment LCD digit, because this circuit has the characteristic of internal PWL movement, this characteristic is needed by 30V peak AC singal, the singal is used to transform 5V input logic into drive state.



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