The requested file:
https://pdf.datasheetcatalog.com/datasheets2/83/83356_1.pdf
is the data sheet for the following electronic components:

Hynix Semiconductor

#	Part Name	Description
1	HY57V281620A	4 Banks x 2M x 16bits Synchronous DRAM
2	HY57V281620ALT-HI	4 Banks x 2M x 16bits Synchronous DRAM
3	HY57V281620ALT-KI	4 Banks x 2M x 16bits Synchronous DRAM
4	HY57V281620ALT-PI	4 Banks x 2M x 16bits Synchronous DRAM
5	HY57V281620ALT-SI	4 Banks x 2M x 16bits Synchronous DRAM
6	HY57V281620AT-HI	4 Banks x 2M x 16bits Synchronous DRAM
7	HY57V281620AT-KI	4 Banks x 2M x 16bits Synchronous DRAM
8	HY57V281620AT-PI	4 Banks x 2M x 16bits Synchronous DRAM
9	HY57V281620AT-SI	4 Banks x 2M x 16bits Synchronous DRAM

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