The 5DB0148HA0 is a dual 4-bit bidirectional data buffer with differential strobes is designed for 1.1V, VDD operation. The device has a dual 4-bit host bus interface that is connected to a memory controller and a dual 4-bit DRAM interface that is connected to two x4 DRAMs. It also has an input-only control bus interface that is connected to a DDR5 Register.


  • Pinout optimized for DDR5 LRDIMM PCB layout
  • DDR5 Server speeds up to 4800MT/s
  • Supports power-down modes to conserve server power
  • Supports 1-rank / 2-rank DIMM configurations
  • Supports SDP and 3DS DRAM types
  • Provides access to internal control words for configuring device
  • Features and adapting to different LRDIMM and system applications
  • Loopback and pass-through modes
  • Training support features for DQ and MDQ interfaces
  • ZQ calibration

Product Options

Orderable Part ID Part Status Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
Preview FCCSP 55 C Yes Tray
Preview FCCSP 55 C Yes Reel

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
5DB0148HA0 Short-Form Datasheet Short Form Datasheet PDF 131 KB