MK2059-01SI

Clock Generators, PLLs, Frequency Synthesizers Overview

The MK2059-01SI is a VCXO-based frame clock frequency translator manufactured by Renesas Electronics Corporation (formerly IDT). It generates common telecommunications reference frequencies, including 1.544 MHz (T1), 2.048 MHz (E1), 19.44 MHz (OC-3), and 16.384 MHz, from an 8 kHz input reference clock. The device provides jitter attenuation and phase locking to the selected input. It operates on a single 3.3V supply within an industrial temperature range of -40°C to +85°C. Key electrical parameters include a crystal pullability range of ±115 ppm, a typical supply current of 15 mA, and output rise/fall times of 1.5 ns.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates T1, E1, OC-3, and other telecom clocks from an 8kHz frame rate input
• Configurable jitter attenuation via external loop filter components for Stratum source de-jittering
• Features a 2:1 input multiplexer for selecting between two alternate reference clocks
• Utilizes VCXO technology with an external quartz crystal for low jitter and phase noise performance

Clock Generators, PLLs, Frequency Synthesizers Applications

• Telecommunications systems requiring precise frame clock translation
• Stratum source de-jitter circuits in network infrastructure
• PDH or SONET to Ethernet clock synchronization applications

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify component authenticity through authorized distributors. Confirm RoHS compliance status as non-green parts have reached end-of-life. Ensure the specific suffix (SI vs SILF) matches packaging requirements. Check for lead-free certification if environmental regulations apply. Validate that the industrial temperature grade meets system operational constraints.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when converting low-frequency frame clocks to high-speed telecom references. Ensure compatibility with the required output frequency options such as 1.544 MHz or 19.44 MHz. Verify that the external loop filter design supports the desired jitter attenuation characteristics. Confirm that the 20-pin SOIC package fits the PCB layout constraints.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the IDT VCXO-based frame clock frequency translator family. It serves as a monolithic replacement for costly hybrid VCXO retiming modules. The device integrates a charge pump, VCXO control, and output divider to maintain phase and frequency lock with the input reference.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Users should consult official manufacturer resources for cross-reference data.