M88DDR4DB02 (Gen2 DDR4 DB)

Product Description

M88DDR4DB02 is a dual 4-bit bidirectional Gen2 DDR4 Data Buffer (DB) with differential strobes. The DB is compliant with JEDEC DDR4DB02 specification and supports data rates up to DDR4-2666. Nine DBs can be used in conjunction with one DDR4 RCD as a chipset for LRDIMM applications to enable advanced memory solutions with higher capacity, higher speed, and lower power consumption for demanding server platforms..


Notes: Here shows the application of DB on the DDR4 LRDIMM as an example.


  • Compliant with JEDEC DDR4DB02 standard
  • Speed up to DDR4-2666
  • Bidirectional retiming and 1:1 redriving of DDR4 data (DQ) signals
  • Regeneration of data strobe (DQS) signals from input clock
  • FIFOs on the DQ path for decoupling Host and DRAM interface time domains
  • Up to four package ranks supported
  • Package rank timing alignment supported on the Host interface
  • x4 DRAM devices supported
  • VDD voltage support: 1.2 V
  • Parity error checking and sequence error checking on the BCOM interface
  • Different power saving modes such as CKE low power mode, CK stop mode, etc
  • Green package: Fine-pitch Ball Grid Array (FBGA)



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