The requested file:
https://pdf.datasheetcatalog.com/datasheets/134/231586_DS.pdf
is the data sheet for the following electronic components:

National Semiconductor

#	Part Name	Description
1	74LS154	4-Line to 16-Line Decoders/Demultiplexers
2	DM54LS154J	4-Line to 16-Line Decoders/Demultiplexers
3	DM74LS154N	4-Line to 16-Line Decoders/Demultiplexers
4	DM74LS154WM	4-Line to 16-Line Decoders/Demultiplexers

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