CDCLVP1208ARHDT

Overview

The CDCLVP1208 is a high-performance, low additive jitter clock buffer featuring an eight-output LVPECL fanout configuration. It accepts two selectable differential or single-ended inputs (LVPECL, LVDS, or LVCMOS/LVTTL) and distributes the selected signal to eight pairs of differential outputs. The device supports maximum clock frequencies up to 2 GHz with a supply voltage range of 2.375 V to 3.6 V. Key electrical specifications include a maximum propagation delay of 450 ps, output skew of 20 ps, and additive jitter performance below 100 fs RMS across a 10 kHz to 20 MHz bandwidth.

Feature Summary

• 2:8 Differential Buffer with selectable inputs via IN_SEL pin
• Low Additive Jitter: <100 fs RMS (10 kHz to 20 MHz)
• Universal Inputs: Accepts LVPECL, LVDS, and LVCMOS/LVTTL
• Maximum Output Frequency: 2 GHz
• Industrial Temperature Range: –40°C to 85°C

Applications

• Wireless Communications
• Telecommunications/Networking Devices
• Medical Imaging Systems
• Test and Measurement Equipment

Procurement Notes

Verify package availability as the component is listed under prototype status in some catalogs. Confirm the specific ordering suffix matches the required thermal pad soldering requirements for the QFN-28 package. Ensure input biasing circuits are designed according to the recommended termination schematics for the chosen supply voltage.

Selection Notes

Select this component when driving multiple LVPECL loads from a single source with minimal skew. Ensure the input signal format matches the supported types (LVPECL, LVDS, LVCMOS). For AC-coupled inputs, utilize the internal VAC_REF generator only at VCC ≥ 3 V; otherwise, apply external bias. Unused inputs and outputs may be left floating.

Part Context

This device belongs to Texas Instruments' family of low-jitter clock buffers. It is characterized by its ability to handle high-frequency signals up to 2 GHz while maintaining strict timing accuracy. The 28-pin QFN package allows for compact PCB layouts suitable for dense electronic designs.

Replacement Considerations

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