DS1086LU-533+T

Overview

The DS1086LU-533+T is a 3.3V programmable clock generator from Analog Devices/Maxim Integrated, housed in an 8-pin μSOP package. It generates spread-spectrum square-wave outputs ranging from 130kHz to 66.6MHz. The device features selectable dithering of 0.5%, 1%, 2%, 4%, or 8% to reduce radiated emissions. It operates on a 2.7V to 3.6V supply and includes a power-down mode with glitchless output-enable control. All settings are stored in nonvolatile EEPROM, allowing standalone operation without external timing components.

Feature Summary

• Programmable frequency range from 130kHz to 66.6MHz with 5kHz master frequency step size
• Selectable spread-spectrum dither levels: 0.5%, 1%, 2%, 4%, or 8%
• Nonvolatile EEPROM memory for storing configuration settings
• 2-Wire serial interface for programming and address configuration

Applications

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

Procurement Notes

Verify the specific ordering suffix '+T' corresponds to tape-and-reel packaging if required by assembly equipment. Confirm the 'L' variant meets industrial temperature requirements (-40°C to +85°C). Ensure the 2-wire bus voltage levels match the system's VCC range of 2.7V to 3.6V. Check for lead-free/RoHS compliance indicated by the '+' suffix.

Selection Notes

Select this component when EMI reduction via spread spectrum is required for clocks up to 66.6MHz. The internal oscillator eliminates the need for external crystals or resonators. Use the 2-wire interface for dynamic frequency adjustment or fixed standalone operation. Ensure the load capacitance does not exceed 50pF to maintain signal integrity.

Part Context

This part belongs to the DS1086L EconOscillator family, which integrates a voltage-controlled oscillator and prescaler into a single chip. The 'LU' designation indicates the industrial temperature grade and μSOP package. The '+T' suffix typically denotes a reel-packaged, lead-free version compliant with RoHS standards.

Replacement Considerations

Direct replacements within the same family include DS1086LU+ (tray) or other DS1086 variants with different factory-programmed default frequencies. Verify that substitute parts support the required dither percentages and 2-wire protocol compatibility.