18QHTF21-124.913-PD

Overview

The 18QHTF21-124.913-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 124.913 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a power-down mode accessible via a standby control pin. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Feature Summary

• Supports low-voltage operation with 1.8V supply requirement
• Integrates standby functionality for power-down capability
• Delivers LVCMOS output signal compatibility
• Utilizes leadless surface-mount packaging

Applications

• Digital signal processing systems
• Communication equipment timing circuits
• Embedded system clock generation
• Portable electronic devices

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply rail is stable and within the operational limits specified in the official datasheet. Ensure the PCB footprint matches the 4-SMD, No Lead package dimensions to prevent assembly issues. Check for any specific handling instructions related to the leadless package type during soldering processes.

Selection Notes

Select this component when a precise 124.913 MHz reference is required in space-constrained designs. The LVCMOS interface ensures compatibility with standard digital logic families operating at 1.8V. Consider the power-down feature if energy efficiency is critical for the application. Evaluate the thermal performance and stability requirements to ensure the standard grade meets the environmental conditions of the final product.

Part Context

This model belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz frequency control products. The series offers various frequencies in a small form factor. Mercury has been a pioneer in Taiwan since 1973, providing both crystal and oscillator solutions. This specific part represents a surface-mount option expanding their traditional lead-type offerings into modern high-density electronics.

Replacement Considerations

Direct substitutes include other 124.913 MHz LVCMOS oscillators in 4-SMD packages from compatible manufacturers. Verify pinout compatibility and electrical specifications such as current consumption and startup time. Models like 18QHTF21-51.200-PD or 18QHTF21-76.913-PD share the same package but differ in frequency.