18QHTF21-27.1727-PD

Oscillators Overview

The 18QHTF21-27.1727-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 27.1727 MHz with LVCMOS output logic. The device requires a 1.8V supply voltage and features a standby or power-down function for energy management. It is housed in a compact 4-SMD, no-lead package with dimensions of 2.0 x 1.6 mm.

Oscillators Feature Summary

• Supports low-voltage operation at 1.8V
• Includes standby and power-down functionality
• Provides LVCMOS output signal compatibility

Oscillators Applications

• General digital clock generation
• Embedded system timing references
• Portable electronic devices requiring low power consumption

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply rail stability meets the oscillator's specifications to ensure reliable operation. Ensure the PCB footprint matches the 4-SMD no-lead package dimensions exactly to avoid assembly issues.

Oscillators Selection Notes

Select this component when a precise 27.1727 MHz reference is required in space-constrained applications. The choice is driven by the need for LVCMOS interface compatibility and the ability to enter a low-power standby mode. Consider the 1.8V operating voltage constraint relative to the system's available power rails.

Oscillators Part Context

This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series typically offers various frequencies within a small 2.0x1.6mm form factor. The '-PD' suffix indicates the inclusion of power-down control capabilities, distinguishing it from standard continuous-operation variants.

Oscillators Replacement Considerations

Direct substitutes must match the 27.1727 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Verify pinout compatibility and thermal characteristics. Cross-reference with other manufacturers offering similar low-profile oscillators with identical electrical parameters.