18QHTF21-81.000-OE

Overview

The 18QHTF21-81.000-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 81 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and features an enable/disable control function. It is housed in a compact 4-SMD, No Lead package designed for surface mount applications.

Feature Summary

• LVCMOS output logic compatibility
• Enable/Disable control functionality
• Compact 4-SMD no lead package

Applications

• High-performance digital signal processing systems
• Communication equipment clocking
• Embedded system timing references

Procurement Notes

Verify the specific ordering suffix to ensure correct frequency and voltage specifications. Confirm that the enable/disable pin configuration matches the target circuit design. Check for RoHS compliance status if required by project regulations. Ensure the surface mount footprint aligns with the PCB layout constraints.

Selection Notes

Select this component when a precise 81 MHz reference is required with low power consumption. The 1.8V supply voltage suits modern low-voltage digital logic families. The enable feature allows for power management strategies in battery-operated devices. Consider thermal performance within the specified operating temperature range.

Part Context

This part belongs to the Mercury Electronics 18QHTF series of quartz crystal oscillators. The series offers various frequencies and voltage options. The 18QHTF21 variant specifically denotes the package type and form factor. These components are designed for reliable timing in consumer and industrial electronics.

Replacement Considerations

Direct substitutes include other 81 MHz LVCMOS oscillators in 4-SMD packages from compatible manufacturers. Verify electrical parameters such as current consumption and stability before substitution. Ensure the replacement part supports the same enable/disable control mechanism.