DS1086LU-440/V+

Overview

The DS1086LU-440/V+ is a 3.3V programmable clock generator from the EconOscillator family, manufactured by Analog Devices/Maxim Integrated. It produces a spread-spectrum square-wave output with frequencies ranging from 130kHz to 66.6MHz. The device features selectable dither magnitudes of 0.5%, 1%, 2%, 4%, or 8% to reduce radiated emissions. It operates on a 2.7V to 3.6V supply and includes nonvolatile EEPROM memory for standalone operation without external components. Key electrical parameters include a maximum output frequency of 66.6MHz, a typical supply current of 10mA, and an operating temperature range of -40°C to +85°C.

Feature Summary

• Programmable output frequency from 130kHz to 66.6MHz with 5kHz master frequency step size
• Selectable spread-spectrum dither (0.5%, 1%, 2%, 4%, 8%) controlled via SPRD pin or serial interface
• Nonvolatile EEPROM storage allows standalone operation without external timing components
• Glitchless output-enable control and power-down mode for power-sensitive applications

Applications

• Printers and copiers
• PCs and computer peripherals
• Cell phones and cable modems

Procurement Notes

Verify the specific suffix 'V+' against official documentation to confirm package type and lead-free status. Confirm availability as distribution channels may list this component as obsolete or limited stock. Ensure the ordering information matches the required industrial temperature range (-40°C to +85°C) and voltage specifications.

Selection Notes

Select this component when EMI reduction is critical in low-pin-count designs. The DS1086LU requires no external crystals or resonators, simplifying PCB layout. Ensure the application supports the 2-wire serial interface for frequency configuration if dynamic changes are needed, or utilize the factory-programmed default settings for fixed-frequency applications.

Part Context

This part belongs to the DS1086L EconOscillator series, which integrates a voltage-controlled oscillator and prescaler into a single 8-pin µSOP package. The 'LU' designation indicates the industrial temperature grade (-40°C to +85°C). The device replaces discrete crystal and buffer solutions, offering a compact alternative for microcontroller clocking and peripheral synchronization.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.