18QHTF21-25.0002-PD

Oscillators Overview

The 18QHTF21-25.0002-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 25.0002 MHz with LVCMOS output logic. The device supports a supply voltage of 1.8V and features a Standby (Power Down) control function. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm.

Oscillators Feature Summary

• LVCMOS output logic for digital interface compatibility
• Standby (Power Down) functionality for power management
• Compact 4-SMD No Lead surface mount package

Oscillators Applications

• General purpose clock signal generation
• Embedded systems requiring low-power oscillators
• Consumer electronics with space constraints

Oscillators Procurement Notes

Verify the exact frequency tolerance and load capacitance requirements against the specific application design before procurement. Confirm that the 1.8V supply voltage aligns with the target system's power rails. Ensure the 4-SMD No Lead package footprint matches the PCB layout specifications to guarantee proper soldering and mechanical stability during assembly.

Oscillators Selection Notes

Select this component when a precise 25.0002 MHz clock source is required with minimal power consumption. The 1.8V operating voltage makes it suitable for battery-powered or low-voltage digital circuits. The standby feature allows for energy savings when the clock is not actively needed. Verify thermal performance within the specified operating temperature range for the intended environment.

Oscillators Part Context

This part belongs to the QHTF series of high-frequency crystal oscillators from Mercury Electronics. The series offers various frequencies and supply voltages, including 1.8V and 2.5V options. These oscillators are designed for applications requiring stable clock signals in small form factors, leveraging Mercury's expertise in quartz crystal manufacturing.

Oscillators Replacement Considerations

Direct substitutes include other 18QHTF21 variants with identical pinouts and electrical characteristics but different frequencies, such as 18QHTF21-25.0000-PD if frequency deviation is acceptable. Cross-reference with similar 4-SMD LVCMOS oscillators from other manufacturers only if pin compatibility and voltage levels match exactly.