The requested file:
https://pdf.datasheetcatalog.com/datasheet2/e/0lg9q3glfj76djod6d40x2jt5ocy.pdf
is the data sheet for the following electronic components:

Fairchild Semiconductor

#	Part Name	Description
1	UC3842D	SMPS Controller
2	UC3842N	SMPS Controller
3	UC3843D	SMPS Controller
4	UC3843D1X	SMPS Controller
5	UC3843DX	SMPS Controller
6	UC3843N	SMPS Controller
7	UC3844D	SMPS Controller
8	UC3844DX	SMPS Controller
9	UC3844N	SMPS Controller
10	UC3845D	SMPS Controller
11	UC3845D1X	SMPS Controller
12	UC3845DX	SMPS Controller
13	UC3845N	SMPS Controller

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