18QHTF21-12.400-OE

Overview

The 18QHTF21-12.400-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 12.4 MHz with an output logic of LVCMOS. The device supports a supply voltage of 1.8V and features an enable/disable function. It is housed in a compact 4-SMD, No Lead package. The component utilizes a crystal base resonator and offers a frequency stability of ±50ppm. Maximum current supply is specified at 24mA. This oscillator is designed for timing applications requiring precise clock signals within the specified operating temperature range.

Feature Summary

• Provides stable LVCMOS output signals for digital circuit timing
• Includes hardware enable and disable control functionality
• Utilizes a quartz crystal base resonator for frequency generation

Applications

• General purpose clock signal generation
• Digital system timing references
• Embedded controller clock inputs

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your design specifications before ordering. Confirm that the 1.8V supply voltage aligns with your system power rails. Ensure the 4-SMD no-lead package footprint matches your PCB layout constraints. Check the operating temperature range to guarantee performance under your environmental conditions. Always refer to the official datasheet for final electrical characteristics.

Selection Notes

Select this component when a low-profile surface-mount oscillator is required for 12.4 MHz applications. Consider the LVCMOS output compatibility with your downstream logic levels. Evaluate the power consumption against battery life requirements if applicable. The enable pin allows for dynamic power management in systems requiring clock gating. Verify thermal performance needs against the specified operating temperature limits.

Part Context

This part belongs to the 18QHTF series of standard oscillators from Mercury Electronics. The series typically offers various frequencies and supply voltages. Mercury Electronic has a long history in manufacturing quartz crystals and oscillators. This specific model represents a standard XO variant suitable for general timing needs.

Replacement Considerations

Check for direct substitutes within the same series such as different frequency variants like 18QHTF21-44.200-OE or 18QHTF21-75.400-OE if frequency changes are acceptable. Ensure any replacement maintains the 4-SMD no-lead package and LVCMOS output type. Verify pinout compatibility and electrical parameters match exactly.

FAQ

What is the output logic type of the 18QHTF21-12.400-OE?

The output logic type is LVCMOS.

Does this oscillator support power control?

Yes, it includes an enable/disable function controlled by the supply voltage or a dedicated pin.