18QHTF21-12.566937-PD

Overview

The 18QHTF21-12.566937-PD is a quartz crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 12.566937 MHz with LVCMOS output logic. The device supports a supply voltage of 1.8V and features a power-down (standby) control function. It is housed in a compact 4-SMD, No Lead package.

Feature Summary

• Supports low-voltage operation at 1.8V
• Includes standby mode for power management
• Utilizes standard LVCMOS output interface

Applications

• Embedded system clock generation
• Digital signal processing timing references
• Communication module synchronization

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply rail is stable and within the operational limits specified in the official datasheet to ensure reliable oscillator performance.

Selection Notes

Select this component when a precise 12.566937 MHz reference is required in space-constrained designs. The choice depends on the need for LVCMOS compatibility and the availability of a power-down control feature to manage energy consumption during idle periods in the target application.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in surface-mount oscillators. The series offers various frequencies and voltage levels, providing standardized solutions for timing applications across consumer electronics and industrial equipment sectors.

Replacement Considerations

Direct substitutes include other 18QHTF21 variants with identical pinouts and electrical characteristics but different frequencies, such as the 18QHTF21-12.000-PD, provided the frequency difference is acceptable for the system design.