The requested file:
https://pdf.datasheetcatalog.com/datasheets/120/236595_DS.pdf
is the data sheet for the following electronic components:

National Semiconductor

#	Part Name	Description
1	54154DMQB	4-Line to 16-Line Decoders/Demultiplexers
2	54154FMQB	4-Line to 16-Line Decoders/Demultiplexers
3	74154	4-Line to 16-Line Decoders/Demultiplexers
4	DM54154J	4-Line to 16-Line Decoders/Demultiplexers
5	DM74154N	4-Line to 16-Line Decoders/Demultiplexers

Select the part name and then you can download the datasheet in PDF format.