18QHTF21-18.937-PD

Oscillators Overview

The 18QHTF21-18.937-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 18.937 MHz and utilizes LVCMOS output logic levels. The device supports a supply voltage of 1.8V and includes a standby or power-down function for energy management. It is housed in a compact 4-SMD, no-lead package designed for surface-mount assembly.

Oscillators Feature Summary

• Supports low-voltage operation with 1.8V supply requirement
• Integrates standby mode to reduce power consumption during idle periods
• Delivers standard LVCMOS signal output for digital interface compatibility

Oscillators Applications

• Embedded systems requiring precise timing references
• Consumer electronics utilizing low-power microcontrollers
• Industrial control boards needing stable clock signals

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure the 1.8V supply rail stability meets the oscillator specifications. Confirm that the PCB footprint matches the 4-SMD no-lead package dimensions provided in the official datasheet to avoid assembly issues.

Oscillators Selection Notes

Select this component when a fixed 18.937 MHz clock source is required for LVCMOS-compatible digital circuits. Consider the 1.8V operating voltage constraint and the availability of the standby feature for power-sensitive designs. Evaluate the thermal performance and size constraints of the 4-SMD package relative to the target application board layout.

Oscillators Part Context

This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series typically offers various frequency options within a standardized small form factor. The PD suffix indicates the inclusion of a power-down pin functionality, distinguishing it from basic continuous-operation variants in the same family.

Oscillators Replacement Considerations

Direct replacements must match the 18.937 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify if alternative manufacturers offer equivalent timing accuracy and standby current specifications. Cross-reference pinouts to ensure functional compatibility without circuit modification.