MCH12140D

Clock Generators, PLLs, Frequency Synthesizers Overview

The MCH12140D is a phase-frequency detector designed for phase-locked loop applications requiring minimal phase and frequency difference at lock. It operates with a maximum toggle frequency of 800 MHz and supports an input edge rate of less than 5.0 ns. The device provides differential UP and DOWN outputs to generate error voltage for VCO control. It features 75 kΩ internal input pulldown resistors and over 1000 V ESD protection. The component is housed in an 8-lead SOIC package and functions within a supply voltage range of -4.2 V to -5.5 V.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Provides differential pulse streams for VCO control when reference and VCO inputs are unequal
• Compatible with MECL 10H logic levels
• Includes internal input pulldown resistors

Clock Generators, PLLs, Frequency Synthesizers Applications

• Phase-locked loop circuits requiring minimum phase and frequency difference at lock
• High bandwidth PLL systems utilizing high performance VCOs
• +5.0 V system implementations

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific ordering suffix to confirm package type and shipping configuration, as the base part number corresponds to multiple variants including tube and tape & reel options. Confirm RoHS compliance status and lead times directly with the manufacturer or authorized distributors prior to procurement. Ensure design compatibility with MECL 10H logic standards.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component for applications requiring functional compatibility with the MC12040 phase-frequency detector while extending maximum frequency to 800 MHz. Choose the MCH12140 variant specifically for MECL 10H logic level compatibility. Validate that the required input edge rate remains below 5.0 ns for proper operation within the specified temperature range.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This device belongs to the MCK12140 series of phase-frequency detectors manufactured by onsemi. It serves as a high-speed digital circuit used as a phase comparator in analog phase-locked loops. The component determines the lead or lag phase relationship between reference and VCO signals, providing a zero error voltage when locked.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

The device is functionally compatible with the MC12040 phase-frequency detector.