DS1087LU-26A+T

Overview

The DS1087LU-26A+T is a factory-programmed, spread-spectrum clock generator producing square-wave outputs from 130kHz to 66.6MHz. It operates on a 2.7V to 3.6V supply and integrates nonvolatile EEPROM for standalone configuration without external timing components. The device features a 2-wire serial interface for user programmability, including selectable 2% or 4% dithering and internal frequency division down to 130kHz. It includes glitchless output-enable control and power-down modes to support power-sensitive applications.

Feature Summary

• Factory programmed square-wave generator with frequencies up to 66.6MHz
• Integrated nonvolatile EEPROM stores settings for standalone operation
• Programmable via 2-wire serial interface with selectable 2% or 4% dither
• Glitchless output enable and power-down control pins

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's documentation to confirm temperature range and package type. Confirm that the component meets RoHS compliance standards required for the target assembly process. Ensure the selected variant matches the required operating voltage and frequency specifications for the design.

Selection Notes

Select this component when a fixed-frequency, spread-spectrum clock source is needed to reduce EMI in digital systems. The integrated oscillator eliminates the need for external crystals. Verify that the 2-wire interface compatibility exists with the host processor. Consider the 8-pin µSOP package dimensions for PCB layout constraints.

Part Context

This part belongs to the DS1087L EconOscillator family, which provides spread-spectrum clock generation capabilities. The 'LU' designation indicates the commercial temperature range (-40°C to +85°C) and the µSOP package. The '+T' suffix typically denotes tape-and-reel packaging for automated assembly.

Replacement Considerations

Direct replacements within the same series include other DS1087LU variants with different factory-programmed frequencies or dither percentages. Cross-family substitution requires verifying pinout compatibility and electrical characteristics.