18QHTF21-27.142-OE

Oscillators Overview

The 18QHTF21-27.142-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 27.142 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and includes enable/disable functionality for power management. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Oscillators Feature Summary

• LVCMOS output logic for digital interface compatibility
• Integrated enable/disable control for power optimization
• Compact 4-SMD no-lead surface mount package design

Oscillators Applications

• General purpose clock generation in embedded systems
• Timing reference for microcontrollers and processors
• Digital signal processing circuits

Oscillators Procurement Notes

Verify the specific operating voltage and load capacitance requirements against the target circuit design before procurement. Ensure the 1.8V supply rail is stable to maintain frequency accuracy. Confirm that the enable/disable pin configuration aligns with the system's power sequencing strategy to prevent unintended operation or excessive current draw during standby modes.

Oscillators Selection Notes

Select this component when a low-voltage 1.8V supply is available and space-constrained layouts require a small SMD footprint. Consider the LVCMOS output swing levels to ensure compatibility with downstream logic inputs. Evaluate the need for active enable/disable control versus always-on operation based on system power efficiency targets and thermal constraints within the enclosure.

Oscillators Part Context

This part belongs to the QHTF21 series of standard oscillators from Mercury Electronics. The series offers various frequencies and voltage options, including 3.3V variants like the 3QHTF21 model. The '18' prefix indicates the 1.8V supply variant, distinguishing it from higher voltage counterparts while maintaining similar package dimensions and functional characteristics across the family.

Oscillators Replacement Considerations

Direct replacements must match the 27.142 MHz frequency, 1.8V supply, and LVCMOS output type. Verify pinout compatibility for the 4-SMD no-lead package. Cross-reference with other manufacturers offering equivalent specifications if Mercury Electronics parts are unavailable, ensuring identical electrical parameters and mechanical form factor.