18QHTF21-1.500-OE

Overview

The 18QHTF21-1.500-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 1.5 MHz and utilizes LVCMOS output logic levels. The device supports an enable/disable control function via a dedicated pin, allowing for power management in active circuits. It is designed to operate with a supply voltage of 1.8V. The component is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly on printed circuit boards.

Feature Summary

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

Applications

• General purpose timing reference in embedded systems
• Clock source for low-frequency microcontrollers
• Synchronization in consumer electronics devices

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the system design specifications before procurement. Confirm that the 1.8V supply voltage aligns with the target circuit's power rails. Ensure the PCB footprint matches the 4-SMD no-lead package dimensions provided in the official datasheet to guarantee proper soldering and mechanical stability during assembly.

Selection Notes

Select this component when a precise 1.5 MHz clock signal is required with minimal power consumption. The integrated enable feature makes it suitable for battery-operated applications where power cycling is necessary. Consider the 1.8V operating voltage constraint and ensure the host system provides a stable supply within the specified range to maintain frequency accuracy and signal integrity.

Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which focuses on small-form-factor timing solutions. The series typically offers various frequencies and voltage options, catering to diverse electronic design needs. As part of Mercury's portfolio, these components leverage established quartz crystal manufacturing expertise to provide reliable frequency control for modern electronic assemblies.

Replacement Considerations

Direct substitutes must match the 1.5 MHz frequency, LVCMOS output type, 1.8V supply voltage, and 4-SMD no-lead package. Verify that any alternative component supports the same enable/disable pin configuration. Cross-reference the pinout and electrical characteristics to ensure functional compatibility without requiring circuit board redesign.