资料介绍
74LS49.pdf 54LS49 BCD to 7-Segment Decoder
June 1989
54LS49 BCD to 7-Segment Decoder
General Description
The 54LS49 translates four lines of BCD (8421) input data
into the 7-segment numeral code as shown in the Function
Table It has open-collector outputs and is logically the 14-
pin verson of the ’48 without the lamp test and ripple blank-
ing features Also see the ’LS249 data sheet
Connection Diagram Logic Symbol
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