CDCLVP1212ARHAR

Overview

The CDCLVP1212ARHAR is a low additive jitter clock buffer manufactured by Texas Instruments. It features a 2:12 ratio, accepting one of two selectable differential or single-ended inputs (LVPECL, LVDS, LVCMOS, LVTTL) and generating 12 pairs of differential LVPECL outputs. The device supports maximum clock frequencies up to 2 GHz with an overall additive jitter performance of less than 0.1 ps RMS from 10 kHz to 20 MHz. It operates on a supply voltage range of 2.375 V to 3.6 V within an industrial temperature range of –40°C to 85°C.

Feature Summary

• 2:12 Low Additive Jitter Buffer
• Universal Inputs Accept LVPECL, LVDS, and LVCMOS/LVTTL
• Maximum Clock Frequency: 2 GHz
• Very Low Additive Jitter: <100 fs, rms in 10-kHz to 20-MHz Offset Range

Applications

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

Procurement Notes

Verify the package type matches the required footprint, as the RHA suffix indicates a 40-VQFN (6x6 mm) package. Confirm that the operating environment stays within the specified -40°C to 85°C temperature range. Ensure power supply decoupling meets the datasheet recommendations for stable operation at high frequencies.

Selection Notes

Select this component when driving multiple LVPECL loads with minimal skew and jitter is critical. The internal multiplexer allows flexible input selection via the IN_SEL pin. Verify that the input signal amplitude and common-mode levels fall within the recommended operating conditions for the chosen supply voltage.

Part Context

This part belongs to the CDCLVP1212 series of high-performance clock buffers. It is specifically designed for applications requiring precise clock distribution with low noise. The device integrates an on-chip multiplexer to select between two input sources, simplifying system design for redundant or multi-source clocking architectures.

Replacement Considerations

Direct replacements include other members of the CDCLVP family such as the CDCLVP1208 or CDCLVP1216, depending on the required number of outputs. Ensure any substitute maintains the same LVPECL output format and compatible input voltage levels.