MK2058-01SITR

Clock Generators, PLLs, Frequency Synthesizers Overview

The MK2058-01SITR is a VCXO-based clock jitter attenuator manufactured by Renesas Electronics Corporation, originally designed by IDT. It regenerates system clocks using an external quartz crystal to replace costly hybrid retiming modules. The device accepts input frequencies from 4 kHz to 27 MHz and outputs the same frequency with phase and frequency locking via a PLL. Key electrical parameters include a single 3.3 V power supply (3.15V–3.45V), industrial temperature range (-40°C to +85°C), and a minimum crystal pullability of ±115 ppm. It features a 2:1 input mux for reference selection without output glitches.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• VCXO-based architecture providing low jitter and phase noise generation
• 2:1 Input MUX for selecting between two reference clocks without switching glitches
• Configurable PLL loop bandwidth and damping factor via external components
• Single-ended LVCMOS output with fixed input-to-output phase relationship

Clock Generators, PLLs, Frequency Synthesizers Applications

• Telecommunications clock distribution
• Recovered data or video clock regeneration
• General purpose distributed system clock attenuation

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify component status as the non-green variant has reached End-of-Life (EOL) per PDN U-09-01. Confirm RoHS compliance requirements; the 'LF' suffix indicates lead-free packaging. Ensure sourcing channels provide valid traceability for this discontinued item.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select based on required input/output frequency ranges defined in the Output Clock Selection Table. External loop filter components (RZ, C1, C2) must be chosen to tailor PLL bandwidth and damping. A compatible pullable quartz crystal is mandatory for operation. Verify PCB layout guidelines to minimize stray capacitance and EMI.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the IDT Communications Clock Jitter Attenuator family. The 'TR' suffix denotes Tape and Reel packaging, while 'SI' indicates the standard industrial temperature grade. The device was acquired by Renesas Electronics following IDT's merger.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consider evaluating other Renesas jitter attenuators or VCXO-based synthesizers that support similar frequency ranges and package types.

Clock Generators, PLLs, Frequency Synthesizers FAQ

How is the output frequency determined?

The output frequency equals the selected input reference frequency. The specific operating range is configured via SEL2:0 pins and depends on the integer multiple of the external crystal frequency.

What happens during input clock switching?

The device uses a 2:1 input mux. Due to the VCXO fly-wheel effect, no switching glitches appear on the output clock when reselecting the input reference.

What are the crystal requirements?

A pullable quartz crystal is required. The recommended crystal frequency is an integer multiple of the I/O clock, and the device supports a minimum pullability range of ±115 ppm.