18QHTF21-12.400-PD

Overview

The 18QHTF21-12.400-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 12.4 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a standby mode for power down functionality. It is housed in a compact 4-SMD, No Lead package suitable for surface mount applications.

Feature Summary

• Supports low voltage operation with 1.8V supply
• Includes standby capability for power management
• Utilizes LVCMOS output logic levels

Applications

• Battery-powered electronic devices
• Portable consumer electronics
• General purpose clock signal generation

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 4-SMD no-lead package footprint matches your PCB layout constraints to guarantee proper assembly and electrical connectivity.

Selection Notes

Select this component when a precise 12.4 MHz clock source is required for low-power systems. The LVCMOS interface ensures compatibility with standard digital logic families. Consider the standby feature if power efficiency is critical. Verify thermal performance within the specified operating temperature range for your intended environment.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz crystal and oscillator products. The manufacturer has decades of experience in frequency control solutions. This specific model represents a standard XO variant optimized for modern portable applications requiring small form factors.

Replacement Considerations

Consult official substitution lists for compatible alternatives. Cross-reference pinouts and electrical specifications carefully. Ensure any replacement maintains the same LVCMOS output type and 1.8V supply requirement.