DS1087LU-266+T&R

Overview

The DS1087LU-266+T&R is a factory-programmed clock generator producing a spread-spectrum square-wave output at 66.6MHz with 2% dither. It operates on a 2.7V to 3.6V supply and features a 2-wire serial interface for user programmability via an internal divider. Settings are stored in nonvolatile EEPROM, enabling standalone operation without external timing components. The device includes power-down and glitchless output-enable controls, packaged in an 8-pin µSOP.

Feature Summary

• Factory programmed for 66.6MHz output frequency with 2% peak dither
• No external timing components required; integrated master oscillator
• User-accessible 2-wire serial interface for divider and dither configuration
• Nonvolatile EEPROM storage retains settings across power cycles

Applications

• Printers
• Copiers
• PCs
• Computer Peripherals
• Cell Phones

Procurement Notes

Verify the specific suffix '+T&R' indicates tape-and-reel packaging when sourcing. Confirm the manufacturer designation as Analog Devices Inc./Maxim Integrated. Ensure the component meets the -40°C to +85°C operating temperature range specified for the DS1087LU series.

Selection Notes

Select this part for applications requiring a fixed 66.6MHz clock with spread-spectrum capabilities to reduce EMI. The 2% dither option is suitable for standard emission limits. Consider the 2-wire interface requirements for system integration if dynamic reconfiguration is needed.

Part Context

This component belongs to the DS1087L EconOscillator family, which provides programmable clock generation solutions. The 'LU' designation specifies the industrial temperature range (-40°C to +85°C) and the µSOP package. The base model DS1087LU-266 defines the 66.6MHz frequency and 2% dither characteristics.

Replacement Considerations

The DS1087LU-466 offers the same 66.6MHz frequency but with 4% dither. Other frequencies in the DS1087LU series may serve as alternatives if different clock rates are acceptable.