1 Features

? 20 LP-HCSL outputs with integrated 85-Ω output

terminations

? 8 hardware output enable (OE#) controls

? Additive phase jitter after DB2000QL filter:

< 0.08ps rms

? Supports PCIe Gen 4 and Gen 5 Common Clock

(CC) and Individual Reference (IR) architectures

– Spread spectrum-compatible

? Cycle-to-cycle jitter: < 50 ps

? Output-to-output skew: < 50 ps

? Input-to-output delay: < 3 ns

? 3.3-V core and IO supply voltages

? Hardware-controlled low power mode (PD#)

? Side-Band Interface (SBI) for output control in PD#

mode

? 9 selectable SMBus addresses

? Power consumption: < 600 mW

? 6-mm × 6-mm, 80-pin TLGA/GQFN package

2 Applications

? Microserver & tower server

? Storage area network & host bus adapter card

? Network attached storage

? Hardware accelerator

3 Description

The CDCDB2000 is a 20-output LP-HCSL,

DB2000QL compliant, clock buffer capable of

distributing the reference clock for PCIe Gen 1-5,

QuickPath Interconnect (QPI), UPI, SAS, and SATA

interfaces. The SMBus, SBI, and 8 output enable

pins allow the configuration and control of all 20

outputs individually. The CDCDB2000 is a DB2000QL

derivative buffer and meets or exceeds the system

parameters in the DB2000QL specification. The

CDCDB2000 is packaged in a 6-mm × 6-mm TLGA/

GQFN package with 80 leads.