MK2727S

Overview

The MK2727S is a low-cost, low-jitter Voltage Controlled Crystal Oscillator (VCXO) and PLL clock synthesizer manufactured by Integrated Device Technology (IDT), now part of Renesas Electronics. It generates a 27 MHz output clock using an external 13.5 MHz pullable crystal. The device accepts a 0 to 3 V tuning voltage to vary the output frequency by ±100 ppm, with a minimum on-chip VCXO pull range of 200 ppm. Operating at 5 V, it features 25 mA TTL-level drive capability and utilizes a sub-micron CMOS process. It is packaged in an 8-pin narrow SOIC.

Feature Summary

• Generates 27 MHz output from a 13.5 MHz external pullable crystal
• On-chip VCXO with ±100 ppm tuning range via 0-3V input
• 25 mA output drive capability at TTL levels
• Packaged in 8-pin narrow SOIC

Applications

• Set-Top Box clock synthesis
• Multimedia system timing
• Replacing expensive discrete 27MHz VCXOs

Procurement Notes

Verify component status as the non-green version of this part reached End-of-Life on May 13, 2010. Ensure procurement sources provide lead-free variants if required for current manufacturing standards. Confirm package type matches the 8-pin SOIC specification and validate temperature grade compatibility for the intended operational environment.

Selection Notes

Select the MK2727S when a cost-effective solution for 27 MHz clock generation is required with voltage-controlled tuning capabilities. Ensure the design accommodates a 5 V supply and includes an external 13.5 MHz pullable crystal with specific load capacitance parameters. Verify that the application does not require extended temperature ranges or high-reliability processing beyond standard commercial ratings.

Part Context

The MK2727S belongs to the IDT MicroClock family of VCXO and PLL clock synthesizers. This series is designed to replace traditional expensive VCXOs and crystals in multimedia applications. Related parts in the family include the MK2731 and MK277x series for designs requiring multiple clock outputs.

Replacement Considerations

Non-green versions are obsolete. Consider lead-free equivalents such as the MK2727SLF or MK2727SLFTR for new designs. Verify pinout and electrical specifications remain identical before substituting.