CDCLVP1208ARHDR

Overview

The CDCLVP1208ARHDR is a high-performance clock buffer manufactured by Texas Instruments. It functions as a 2:8 differential fanout buffer, generating eight LVPECL outputs from one of two selectable inputs (LVPECL, LVDS, or LVCMOS/LVTTL). The device supports maximum clock frequencies up to 2 GHz with a maximum propagation delay of 450 ps and output skew as low as 20 ps. It operates on a supply voltage range of 2.375 V to 3.6 V, consuming a maximum core current of 73 mA. Packaged in a 28-VQFN (5x5 mm) format, it is characterized for industrial temperatures from -40°C to +85°C.

Feature Summary

• Low additive jitter performance (<100 fs RMS in 10 kHz to 20 MHz offset range)
• Universal input compatibility supporting LVPECL, LVDS, and LVCMOS/LVTTL signals
• On-chip multiplexer allowing selection between two clock inputs via IN_SEL pin
• Industrial temperature range operation (-40°C to +85°C)

Applications

• Wireless communications systems
• Telecommunications and networking devices
• Medical imaging equipment
• Test and measurement instrumentation

Procurement Notes

Verify the specific ordering suffix 'ARHDR' against the manufacturer's official documentation to confirm package type (RHD QFN-28), tape-and-reel quantity, and RoHS compliance status. Ensure that the procurement channel provides valid traceability for this prototype designation if required by system specifications.

Selection Notes

Select the CDCLVP1208 when driving multiple LVPECL loads with minimal skew is critical. Ensure the design accommodates the 2.375 V to 3.6 V supply range and utilizes proper 50 Ω termination networks for LVPECL outputs. Verify that the input signal levels match the supported LVPECL, LVDS, or LVCMOS/LVTTL standards.

Part Context

This component belongs to the CDCLVP family of high-speed clock buffers. It shares functional similarities with other TI devices like the CDCLVP111 and CDCLVP2108 but is distinct in its 2:8 ratio and universal input capabilities. It serves as a distribution element in complex timing architectures requiring low jitter performance.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.