18QHTF21-27.175-PD

Oscillators Overview

The 18QHTF21-27.175-PD is a crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 27.175 MHz and utilizes LVCMOS output logic levels. The device is designed for a supply voltage of 1.8V and includes a standby or power-down function to reduce consumption when inactive. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6mm.

Oscillators Feature Summary

• Supports low-voltage operation at 1.8V
• Features LVCMOS output interface
• Includes standby and power-down functionality

Oscillators Applications

• Embedded systems requiring precise clock signals
• Portable electronic devices due to low power consumption
• Digital signal processing circuits

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Ensure that the 1.8V supply rail is stable and within the operational limits specified in the official datasheet. Confirm that the PCB footprint matches the 4-SMD No Lead package dimensions to prevent assembly issues.

Oscillators Selection Notes

Select this component when a 27.175 MHz clock source is required with minimal power usage. The 1.8V operating voltage makes it suitable for modern low-power digital logic families. Consider the small 2.0x1.6mm package size for space-constrained designs. Verify compatibility with LVCMOS input stages of the receiving components.

Oscillators Part Context

This part belongs to the QHTF series of surface-mount oscillators from Mercury Electronics. The series is characterized by small form factors and low current consumption. The 'PD' suffix indicates the inclusion of a power-down control feature, distinguishing it from standard continuous-operation variants within the same family.

Oscillators Replacement Considerations

Direct replacements must match the 27.175 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 if Mercury Electronics stock is unavailable.