18QHTF21-8.0004-OE

Overview

The 18QHTF21-8.0004-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 8.0004 MHz with LVCMOS output logic levels. The device requires a 1.8V supply voltage and features enable/disable control functionality. It is housed in a compact 4-SMD, No Lead package designed for surface mount applications. The component supports an operating temperature range suitable for commercial electronic environments.

Feature Summary

• LVCMOS output interface for digital logic compatibility
• Integrated enable and disable control pin
• Surface-mount 4-SMD no lead package design
• Standard crystal oscillator configuration

Applications

• General purpose clock signal generation
• Microprocessor clock input circuits
• Digital communication interfaces
• Embedded system timing references

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the PCB footprint matches the 4-SMD no lead package dimensions specified in the official datasheet to guarantee proper soldering and mechanical stability during assembly processes.

Selection Notes

Select this component when a low-voltage 1.8V operation is required for clock distribution. The LVCMOS output is suitable for direct interfacing with standard digital logic families. Consider the enable/disable feature if power management or clock gating is necessary within the design. Verify that the 8.0004 MHz frequency meets the precise timing requirements of the application without needing external dividers.

Part Context

This part belongs to the Mercury 18QHTF21 series of standard XO oscillators. The series offers various frequencies and supply voltages. The '18' prefix typically indicates the 1.8V supply variant. The 'OE' suffix denotes the enable/disable functionality. This family provides reliable timing solutions for compact electronic designs requiring surface mount technology.

Replacement Considerations

Direct replacements must match the 8.0004 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no lead package. Check equivalent parts from other manufacturers offering identical electrical specifications and pinout configurations to ensure functional compatibility without redesigning the host circuit.