MC88LV915TFNR2

Clock Generators, PLLs, Frequency Synthesizers Overview

The MC88LV915TFNR2 is a low skew CMOS PLL clock driver designed for high-performance PC and workstation applications. It utilizes phase-locked loop technology to lock frequency and phase onto an input reference clock, distributing it with minimal delay. The device features five Q outputs (Q0–Q4) with less than 500 ps output-to-output skew, plus inverted Q5, doubled 2X_Q, and halved Q/2 outputs. Operating at a maximum 2X_Q frequency of 100 MHz, it provides ±36 mA drive capability at CMOS levels while maintaining TTL-level compatibility on inputs.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Five Q outputs (Q0-Q4) with <500 ps output-to-output skew
• Maximum operating frequency of 100 MHz at the 2X_Q output
• Input/output phase-locked frequency ratios of 1:2, 1:1, and 2:1
• Test mode pin (PLL_EN) allows low frequency board testing

Clock Generators, PLLs, Frequency Synthesizers Applications

• High performance personal computers
• Workstation clock distribution
• Multi-processing systems requiring synchronous board-to-board clocking

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify that the 'R2' suffix corresponds to tape-and-reel packaging as indicated by distributor listings. Confirm the component is sourced from authorized channels given its legacy status under Motorola/NXP. Ensure the 28-lead PLCC package matches the target PCB footprint requirements before procurement.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when low skew distribution of a single reference clock to multiple components is required. It supports VCC supply voltages of 3.3V ±0.3V. Consider the FREQ_SEL pin configuration if utilizing low frequency reference clocks below 20 MHz to maintain optimal VCO operation.

Clock Generators, PLLs, Frequency Synthesizers Part Context

Originally manufactured by Motorola, Inc., this part is now distributed under NXP USA Inc. branding following corporate acquisitions. The datasheet revision indicates a 2001 publication date, reflecting its design era for high-speed digital systems. It belongs to the MC88LV915T family of low skew CMOS PLL clock drivers.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

The MC88LV915TFN55 is a direct functional equivalent within the same family, differing primarily in maximum frequency specifications (55 MHz vs 100 MHz). Verify that the lower speed rating of the replacement meets the system's timing requirements.