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IDT DDR4-RegisterClockDriver-4RCD0124 Block-Diagram


DDR4 Register Clock Driver (RCD)

IDT’s JEDEC-compliant 4RCD0124K is a Gen 1 DDR4 registered clock driver (RDC) for Enterprise Class Server RDIMMs, LRDIMMs and UDIMMs operating with a 1.2V Vdd supply. It features a 32-bit 1:2 register command, address buffer with parity designed for 1.2V VDD operation.


  • JEDEC Compliant RCD  
  • DDR4-1600/1866/2133/2400
  • Optimized for JEDEC DDR4 2400 MT/s RDIMM, LRDIMM and UDIMM
  • Designed to be used with IDT 4DB0226KA (DDR4 DB) and IDT TSE2004GB2 (DDR4 Temperature Sensor)
  • Supports CKE Power Down operation modes
  • Support Quad Chip Select Operation
    • Direct Dual CS Mode
    • Direct QuadCS Mode
  • Encoded QuadCS Mode
  • Pinout optimized DDR4 RDIMM, LRDIMM and UDIMM PCB layout
  • Provides access to internal control words for configuring the device features and adapting in different RDIMM and system applications
  • Available in 253-ball Dual-Pitch (0.50mm/0.65mm), 15 x 20 Grid , Rectangular Ball Grid Array Package

Product Specification

SDRAM TypeFunctionPkg. CodePkg. TypeLength (mm)Width (mm)Temp. Grade
DDR4 up to 2400Register + PLLATG253FCCSP13.58C

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. GradePb (Lead) FreeCarrier TypeSample & Buy
4RCD0124KC0ATGActiveATG253FCCSP253CYesTrayCheck Availability


Technical Documentation

Title Other Languages Type Format File Size Datesort icon
Apps Notes & White Papers
IDT DDR4 LRDIMMs Let You Have It All 简体中文 White Paper PDF 1.08 MB Feb 9, 2016
DDR4 LRDIMMs For Both Memory Capacity and Speed White Paper PDF 5.22 MB May 19, 2014
PCN# : A1409-02 Alternate Bump and Assembly Location FCCSP-253 Product Change Notice PDF 25 KB Jan 6, 2015
PCN# : TB1407-02 Alternate Test and Backend Location Product Change Notice PDF 22 KB Jul 25, 2014
IDT Memory Interface Chipsets 简体中文 Product Brief PDF 462 KB Aug 12, 2015

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