JEDEC JESD82-521 PDF

This standard defines standard specifications for features and functionality, DC & AC interface parameters and test loading for definition of the DDR5 data buffer for driving DQ and DQS nets on DDR5 LRDIMM applications.

The purpose is to provide a standard for the DDR5DB01 (see Note) logic device, for uniformity, multiplicity of sources, elimination of confusion, ease of device specification, and ease of use.

NOTE: The designation DDR5DB01 refers to the part designation of a series of commercial logic parts common in the industry. This designation is normally preceded by a series of manufacturer specific characters to make up a complete part designation.

This document uses DDR5DB01, Data Buffer, DB or Buffer interchangeably throughout for the DDR5DB01 device naming.