18QHTF21-25.002-PD

Oscillators Overview

The 18QHTF21-25.002-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 25.002 MHz and utilizes LVCMOS output logic. The device is designed for surface mount applications, featuring a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm. It functions with a supply voltage of 1.8V and includes a standby or power-down function to manage energy consumption during inactive periods.

Oscillators Feature Summary

• Supports standby mode for power management
• Utilizes LVCMOS output interface
• Compact surface-mount form factor

Oscillators Applications

• General clock signal generation
• Embedded system timing references
• Portable electronic devices requiring low power

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Ensure the 1.8V supply rail stability meets the oscillator's operational specifications. Confirm that the PCB footprint matches the 2.0x1.6mm package dimensions to avoid assembly issues.

Oscillators Selection Notes

Select this component when a precise 25.002 MHz reference is required in space-constrained designs. The 1.8V operating voltage makes it suitable for modern low-voltage digital systems. Consider the standby feature if power efficiency is a critical design parameter for the application.

Oscillators Part Context

This part belongs to the QHTF series of high-frequency oscillators from Mercury Electronics. The series typically offers various frequencies within a small SMD package. The 'PD' suffix indicates the inclusion of a power-down control capability, distinguishing it from continuous-operation variants in the same family.

Oscillators Replacement Considerations

Direct substitutes must match the 25.002 MHz frequency, 1.8V supply, LVCMOS output, and 2.0x1.6mm package size. Verify pin compatibility and electrical characteristics of alternative sources carefully.