MK1581-01GILF

Clock Generators, PLLs, Frequency Synthesizers Overview

The MK1581-01GILF is a clock generator manufactured by Renesas Electronics Corporation, housed in a 16-TSSOP package. It generates T1 (1.544 MHz) or E1 (2.048 MHz) output clocks from an 8 kHz frame clock input. The device utilizes an on-chip VCXO for low phase noise and jitter attenuation. It operates on a single 3.3 V power supply with a voltage range of 3.15V to 3.45V. The component supports industrial temperature ranges from -40°C to +85°C and features configurable jitter attenuation characteristics suitable for Stratum source de-jitter circuits.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Generates T1 (1.544 MHz) or E1 (2.048 MHz) output from 8 kHz frame clock input
• On-chip VCXO ensures very low jitter and phase noise generation
• Configurable jitter attenuation via external loop filter components
• +115ppm minimum crystal frequency pullability range

Clock Generators, PLLs, Frequency Synthesizers Applications

• T1 and E1 based network access systems
• Multitrunk telecommunication systems
• Stratum source de-jitter circuits

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the current lifecycle status as the base model MK1581-01 is listed as obsolete in public distributor records. Confirm availability of the specific GILF suffix variant through authorized channels. Ensure compatibility with the required 3.3V supply and 16-TSSOP footprint during sourcing.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when low phase noise and precise jitter attenuation are required for T1/E1 synchronization. Verify that the system provides an 8 kHz frame clock input. Check that the application environment falls within the -40°C to +85°C operating temperature range and requires a 16-pin TSSOP package.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the MK1581 series of clock generators designed for telecommunications timing. It serves as a replacement for more costly hybrid VCXO retiming modules. The device integrates CMOS technology to provide power-efficient clock generation for standard telecommunication interfaces.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Public records indicate the MK1581-01 series is discontinued. Evaluate alternative clock generators from Renesas or other manufacturers that support T1/E1 frequencies and offer similar jitter attenuation capabilities in a 16-TSSOP package.