18QHTF21-12.444444-OE

Overview

The 18QHTF21-12.444444-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 12.444444 MHz and utilizes LVCMOS output logic. The device requires a supply voltage of 1.8V and features enable/disable control functionality. It is housed in a compact 4-SMD, no lead package suitable for surface mount applications.

Feature Summary

• LVCMOS output logic for digital interface compatibility
• Integrated enable/disable control capability
• Compact 4-SMD no lead surface mount package

Applications

• General purpose clock signal generation
• Digital circuit timing reference
• Embedded system clock sources

Procurement Notes

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

Selection Notes

Select this component when a precise 12.444444 MHz clock source is required with low voltage operation. The LVCMOS output ensures direct interfacing with standard digital logic families without additional level shifting. The enable feature allows for power management strategies in battery-operated or energy-efficient designs requiring clock gating capabilities.

Part Context

This part belongs to the 18QHTF21 series of surface mount oscillators from Mercury Electronics. The series typically offers various frequency options within a standardized small outline package. The 'OE' suffix likely denotes a specific ordering or packaging variant within the manufacturer's catalog structure for this frequency point.

Replacement Considerations

Direct substitutes must match the 12.444444 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no lead package dimensions. Verify electrical parameters such as current consumption and phase noise if critical. Cross-reference with other manufacturers offering similar SMD XO packages.