The requested file:
https://pdf.datasheetcatalog.com/datasheets2/28/288074_1.pdf
is the data sheet for the following electronic components:

Samsung Electronic

#	Part Name	Description
1	K4D263238M-QC45	1M x 32Bit x 4 Banks Double Data Rate Synchronous RAM with Bi-directional Data Strobe and DLL
2	K4D263238M-QC50	1M x 32Bit x 4 Banks Double Data Rate Synchronous RAM with Bi-directional Data Strobe and DLL
3	K4D263238M-QC55	1M x 32Bit x 4 Banks Double Data Rate Synchronous RAM with Bi-directional Data Strobe and DLL
4	K4D263238M-QC60	1M x 32Bit x 4 Banks Double Data Rate Synchronous RAM with Bi-directional Data Strobe and DLL

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