MCK12140DR2

Clock Generators, PLLs, Frequency Synthesizers Overview

The MCK12140DR2G is a Phase Frequency Detector manufactured by onsemi, designed for use in phase-locked loop (PLL) applications. It operates within an input frequency range of 650 MHz to 800 MHz and requires a supply voltage between 4.94 V and 5.5 V. The device utilizes Silicon technology and is housed in an 8-pin SOIC package suitable for surface mount installation. It functions by providing differential UP and DOWN output pulses when the reference and VCO inputs differ in frequency or phase, generating an error voltage for VCO control.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Operates at high frequencies with a maximum input frequency of 800 MHz
• Compatible with 100K ECL logic levels and +5.0 V systems
• Features >1000 V ESD protection and 75kΩ internal input pull-down resistors
• Available in a compact 8-pin SOIC surface-mount package

Clock Generators, PLLs, Frequency Synthesizers Applications

• Phase-locked loop (PLL) circuits requiring minimal phase/frequency difference at lock
• High-bandwidth PLL designs when paired with high-performance VCOs like MC100EL1648
• Systems utilizing 100K ECL logic standards

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the component designation carefully as the suffix 'R2' typically indicates tape and reel packaging, while 'R2G' denotes RoHS compliance. Confirm the specific ordering suffix required for your manufacturing process. Check current availability status as supply constraints may affect lead times. Ensure the datasheet matches the exact part number variant before procurement.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when a phase frequency detector capable of handling up to 800 MHz is required. It is functionally compatible with the MC12040 but offers extended frequency performance. Ensure the design supports the specified 4.94 V to 5.5 V supply range. Consider the 8-pin SOIC footprint for PCB layout compatibility. Verify ECL level compatibility with existing system logic families.

Clock Generators, PLLs, Frequency Synthesizers Part Context

The MCK12140 belongs to the MCK12140 series of phase detectors. It is distinct from the MCH12140, which is compatible with MECL 10H logic levels, whereas the MCK12140 aligns with 100K ECL standards. Both variants serve similar PLL functions but differ in I/O compatibility. The DR2G suffix specifies the reel packaging and RoHS compliant version of this integrated circuit.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

The MC12040 is noted as functionally compatible, though it has a lower maximum frequency specification. Designers should verify that the replacement meets the 800 MHz requirement if high-speed operation is critical. No other direct substitute part numbers are confirmed in the provided documentation.