CDCDB803RSLR

Overview

The Texas Instruments CDCDB803RSLR is an eight-output clock buffer designed for PCIe Gen 1 through Gen 5, QuickPath Interconnect (QPI), UPI, SAS, and SATA interfaces. It operates within a 3 V to 3.6 V supply range and supports a maximum frequency of 250 MHz. The device features differential HCSL input and output signals with a maximum propagation delay of 3 ns. Packaged in a 48-pin VQFN (6 mm × 6 mm) case, it includes SMBus interface capabilities and individual output enable pins for configuration control.

Feature Summary

• Eight LP-HCSL outputs with programmable integrated 85 Ω or 100 Ω differential termination
• Supports PCIe Gen 4/5 common clock and individual reference architectures
• SMBus interface with nine selectable addresses for configuration
• Hardware-controlled low-power mode via PD# pin

Applications

• Microservers and tower servers
• Storage area networks and host bus adapter cards
• Network-attached storage systems
• Hardware accelerators
• Rack-mounted server infrastructure

Procurement Notes

Verify the specific suffix 'RSLR' against the manufacturer datasheet to confirm tape and reel packaging specifications. Ensure the component meets RoHS compliance requirements for the target assembly process. Cross-reference the 48-VQFN footprint dimensions during PCB layout validation to prevent mechanical interference.

Selection Notes

Select this component when distributing reference clocks to multiple high-speed serial interfaces requiring low jitter performance. The device is suitable for designs needing independent output control via hardware OE# pins. Verify that the system power budget accommodates the maximum current consumption of 72 mA under full load conditions.

Part Context

This part belongs to the CDCDB803 series, which serves as a DB800ZL compliant derivative buffer. It is engineered to meet or exceed system parameters defined in the DB800ZL specification and aligns with DB2000Q standards for phase jitter performance in high-speed data communication applications.

Replacement Considerations

The CDCDB800RSLT is a related variant within the same family offering similar functionality. Confirm compatibility regarding output drive strength and specific timing parameters before substitution.