DS1088LU-27+

Clock Generators, PLLs, Frequency Synthesizers Overview

The DS1088LU-27+ is a fixed-frequency clock generator producing a square-wave output at 27 MHz. It operates on a single 2.7V to 3.6V supply and requires no external timing components. The device features a power-down pin for low-power applications, with active supply current reaching up to 24 mA at maximum frequency and load. Frequency tolerance is ±1% over the full operating voltage and temperature range of -20°C to +85°C. It is housed in an 8-pin µSOP package.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Factory-calibrated fixed-frequency oscillator from 312kHz to 133MHz
• Single LVCMOS output without external timing components
• Active-low power-down mode reduces standby current to 10 µA
• ±1% frequency tolerance across voltage and temperature variations

Clock Generators, PLLs, Frequency Synthesizers Applications

• Printers
• Copiers
• Computer Peripherals
• POS Terminals
• Cable Modems

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm lead-free status and package type. Confirm availability through authorized distributors as stock levels fluctuate. Ensure the component meets RoHS compliance requirements for the target assembly process.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when a precise, factory-trimmed clock signal is required without the complexity of programmable PLLs or external crystals. The wide supply voltage range supports various logic families. Consider the power-down feature if system energy efficiency during idle states is a design priority.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the DS1088L EconOscillator family, designed to replace traditional crystal oscillators and ceramic resonators. It simplifies PCB layout by eliminating external timing components while maintaining high accuracy and stability comparable to discrete oscillator solutions.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct replacements within the same series include DS1088LU-16+, DS1088LU-66+, and DS1088LU-100+. Verify that the replacement part matches the required output frequency and package dimensions before substitution.

Clock Generators, PLLs, Frequency Synthesizers FAQ

What is the function of the PDN pin?

The PDN (Power-Down) pin is active-low. When driven high, the oscillator is enabled. When driven low, the internal oscillator and output are disabled to save power.

How should the power supply be decoupled?

Use 0.01µF and 0.1µF high-quality ceramic surface-mount capacitors placed as close as possible to the VCC and GND pins to minimize lead inductance.

What is the typical power-up time?

The power-up time includes approximately 100µs for stabilization, during which the output remains disabled until the voltage-controlled oscillator generates 512 clock cycles.