MC145151DW2

Clock Generators, PLLs, Frequency Synthesizers Overview

The MC145151DW2 is a CMOS phase-locked loop (PLL) frequency synthesizer in a 28-pin SOG package. It features a 14-bit programmable divide-by-N counter and interfaces with single-modulus prescalers. The device includes an on-chip reference oscillator, selectable-reference divider, and digital phase detector. Operating within a 3.0 V to 9.0 V supply range, it supports frequencies up to 15 MHz at 5 V. Key outputs include lock detection and buffered N-counter signals.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• 14-bit parallel-input ÷ N counter with range of 3 to 16383
• Integrated on-chip reference oscillator or external clock input
• Lock detect signal output for loop status monitoring
• CMOS technology ensuring low power consumption

Clock Generators, PLLs, Frequency Synthesizers Applications

• CATV TV tuning systems
• AM/FM radio scanning receivers
• Two-way radio transceivers
• Amateur radio equipment

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the 'DW' suffix corresponds to the SOG package (Case 751F) rather than the Plastic DIP variant. Confirm the specific revision level matches design requirements, as datasheet revisions may update electrical characteristics or pin descriptions. Ensure compatibility with existing single-modulus prescaler configurations.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when interfacing with single-modulus prescalers requiring a 14-bit division ratio. For dual-modulus prescaler applications, consider the MC145152-2 instead. Ensure the operating voltage remains between 3.0 V and 9.0 V. Verify that the required reference divider values (e.g., 8, 128, 256) align with system timing constraints.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This device is part of the MC145151/MC145152 family of PLL frequency synthesizers. It serves as an improved-performance drop-in replacement for the MC145151-1, offering decreased power consumption and enhanced ESD and latch-up performance while maintaining functional compatibility.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

The MC145151-1 is the predecessor model. While functionally similar, the MC145151-2 offers improved electrical characteristics. No direct cross-model substitutes are documented; verify pinout and logic levels when replacing older variants.