DS1086Z-42M

Overview

The DS1086Z-42M is a programmable clock generator from the DS1086 series, manufactured by Analog Devices Inc./Maxim Integrated. It produces spread-spectrum square-wave outputs ranging from 260kHz to 133MHz with selectable 2% or 4% dithering to reduce radiated emissions. The device operates on a 5V supply and features a 2-wire serial interface for configuration. All settings are stored in nonvolatile EEPROM memory, enabling standalone operation without external timing components. It includes power-down and glitchless output-enable controls.

Feature Summary

• Programmable frequency range from 260kHz to 133MHz with 10kHz master frequency step size
• Selectable 2% or 4% spread-spectrum dithering for EMI reduction
• Nonvolatile EEPROM storage for standalone operation
• Glitchless output-enable control and power-down mode

Applications

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

Procurement Notes

Verify the specific suffix '42M' against official documentation to confirm if it denotes a custom factory setting or a specific packaging variant, as standard listings typically use suffixes like 'U+' or 'Z+'. Confirm lead times and availability directly with authorized distributors, as stock levels fluctuate.

Selection Notes

Select this component when a programmable, low-noise clock source with spread-spectrum capabilities is required. Ensure the application supports a 5V supply and utilizes a 2-wire serial interface for configuration. Verify that the desired output frequency falls within the 260kHz to 133MHz range after accounting for prescaler division.

Part Context

The DS1086Z-42M belongs to the DS1086 EconOscillator family, which integrates a voltage-controlled oscillator, prescaler, and EEPROM into a single package. This series eliminates the need for external crystals or resonators, simplifying PCB layout and reducing component count in high-frequency digital systems.

Replacement Considerations

Direct replacements include other DS1086 variants such as DS1086U+ or DS1086Z+, provided the pinout and electrical characteristics match. For custom frequency requirements, contact the manufacturer for specific programming services rather than relying on generic substitutes.