18QHTF21-25.000938-PD

Oscillators Overview

The 18QHTF21-25.000938-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 25.000938 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a Standby (Power Down) control function to manage power consumption. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Oscillators Feature Summary

• LVCMOS output logic for digital interface compatibility
• Standby mode capability for power management
• Compact 4-SMD no-lead surface mount package

Oscillators Applications

• Digital signal processing systems
• Communication equipment clocking
• Embedded system timing references

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply voltage aligns with your system'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.

Oscillators Selection Notes

Select this component when a precise 25.000938 MHz reference is required with low power consumption capabilities. The LVCMOS output is suitable for direct interfacing with standard digital logic families. Consider the standby feature if power efficiency is critical. Verify environmental specifications such as operating temperature range against your application constraints.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies within a small form factor. The suffix -PD indicates the presence of a power-down pin or function, distinguishing it from models without standby capabilities. This series is designed for high-volume consumer and industrial electronics requiring reliable timing solutions.

Oscillators Replacement Considerations

Direct replacements must match the 25.000938 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Models like 18QHTF21-25.000938-OE may differ in control functionality (Enable/Disable vs. Standby). Always verify electrical parameters and pinout compatibility before substituting.