18QHTF21-15.443-PD

Oscillators Overview

The 18QHTF21-15.443-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 15.443 MHz and utilizes LVCMOS output logic levels. The device is designed for surface-mount applications, featuring a compact 4-SMD, No Lead package configuration. It supports a supply voltage of 1.8V and includes a standby function for power-down control. This component serves as a precise clock source for digital circuits requiring low-power operation and stable frequency generation within the specified operating temperature range.

Oscillators Feature Summary

• Provides stable 15.443 MHz clock signal via LVCMOS interface
• Integrates standby mode for efficient power management
• Utilizes leadless surface-mount packaging for automated assembly

Oscillators Applications

• Digital system clock generation
• Communication module timing references
• Embedded processor clock sources

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD no-lead package footprint matches your PCB layout constraints. Cross-reference the datasheet for thermal specifications to guarantee reliable operation under expected environmental conditions.

Oscillators Selection Notes

Select this oscillator when a precise 15.443 MHz frequency is required for synchronous digital systems. The LVCMOS output ensures compatibility with standard logic families operating at 1.8V. Consider the standby feature if power conservation is critical during idle periods. The surface-mount form factor facilitates high-volume manufacturing and space-constrained designs compared to through-hole alternatives.

Oscillators Part Context

Mercury Electronics has produced frequency control products since 1973, establishing itself as a pioneer in quartz crystal manufacturing. The company transitioned from lead-type components to surface-mount technologies, expanding its frequency range significantly. This model represents their capability to deliver reliable oscillators for modern electronic applications requiring miniaturization and energy efficiency.

Oscillators Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Verify pinout and electrical characteristics carefully if considering alternative manufacturers. Ensure any replacement maintains the 15.443 MHz frequency and 1.8V LVCMOS output profile.