DS1089LU-140+W

Clock Generators, PLLs, Frequency Synthesizers Overview

The DS1089LU-140+W is a factory-programmed clock generator from the EconOscillator family, designed to produce a spread-spectrum square-wave output. It operates within a supply voltage range of 2.7V to 3.6V and supports frequencies up to 66.6MHz. The device features center frequency spreading with selectable dither percentages of ±1%, ±2%, ±4%, or ±8%. Configuration is managed via an I²C-compatible serial interface, with all settings stored in nonvolatile EEPROM for standalone operation. It includes power-down and glitchless output-enable controls.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Factory-programmed square-wave generator with center spread-spectrum capability
• I²C-compatible serial interface for user programmability down to 130kHz
• Nonvolatile EEPROM storage retains configuration without external memory
• Glitchless output enable and power-down modes for power-sensitive applications

Clock Generators, PLLs, Frequency Synthesizers Applications

• Printers
• Copiers
• Computer Peripherals
• POS Terminals
• Cable Modems

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific suffix 'W' against official documentation, as datasheets indicate standard packages are µSOP (118 mil) and tape/reel options use the '/T' suffix. Confirm RoHS compliance status associated with the '+' symbol. Check current product lifecycle status, as many devices in this series have reached end-of-life.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select based on the required master oscillator frequency and desired dither percentage. Ensure the application requires the specific 8-pin µSOP package. Verify that the I²C address bits (A0-A2) align with system bus requirements. Consider the prescaler divider settings if output frequencies below the master oscillator frequency are needed.

Clock Generators, PLLs, Frequency Synthesizers Part Context

The DS1089L is part of the Maxim Integrated EconOscillator line, pin-for-pin compatible with the DS1087L but offering symmetric center spreading. The 'LU' designation typically indicates the lead-free and RoHS-compliant version of the standard DS1089L series.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

The DS1087L is noted as pin-compatible but lacks center spread functionality. Other models in the DS1089L series (e.g., DS1089LU-21G, DS1089LU-450) offer different factory-set frequencies and dither rates.