The requested file:
https://pdf.datasheetcatalog.com/datasheets/228/232390_DS.pdf
is the data sheet for the following electronic components:

National Semiconductor

#	Part Name	Description
1	74LS163	Synchronous 4-Bit Binary Counters
2	74LS163A	Synchronous 4-Bit Binary Counters
3	DM54LS161AE	Synchronous 4-Bit Binary Counters
4	DM54LS161AJ	Synchronous 4-Bit Binary Counters
5	DM54LS161AM	Synchronous 4-Bit Binary Counters
6	DM54LS161AN	Synchronous 4-Bit Binary Counters
7	DM54LS161AW	Synchronous 4-Bit Binary Counters
8	DM54LS163AE	Synchronous 4-Bit Binary Counters
9	DM54LS163AJ	Synchronous 4-Bit Binary Counters
10	DM54LS163AM	Synchronous 4-Bit Binary Counters
11	DM54LS163AN	Synchronous 4-Bit Binary Counters
12	DM54LS163AW	Synchronous 4-Bit Binary Counters
13	DM74LS161AE	Synchronous 4-Bit Binary Counters
14	DM74LS161AJ	Synchronous 4-Bit Binary Counters
15	DM74LS161AM	Synchronous 4-Bit Binary Counters
16	DM74LS161AN	Synchronous 4-Bit Binary Counters
17	DM74LS161AW	Synchronous 4-Bit Binary Counters
18	DM74LS163AE	Synchronous 4-Bit Binary Counters
19	DM74LS163AJ	Synchronous 4-Bit Binary Counters
20	DM74LS163AM	Synchronous 4-Bit Binary Counters
21	DM74LS163AN	Synchronous 4-Bit Binary Counters
22	DM74LS163AW	Synchronous 4-Bit Binary Counters

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