18QHTF21-71.040-OE

Overview

The 18QHTF21-71.040-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 71.04 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes an enable/disable control feature. It is housed in a compact 4-SMD, No Lead package, designed for surface-mount applications requiring precise timing signals.

Feature Summary

• Integrates LVCMOS output logic for digital interface compatibility
• Supports active enable and disable control functionality
• Utilizes a leadless SMD package for automated assembly

Applications

• Digital signal processing systems
• Communication equipment clocking
• 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 prevent mounting issues.

Selection Notes

Select this component when a stable 71.04 MHz reference is required for LVCMOS-compatible circuits. The integrated enable pin allows for power management strategies. Consider the operating temperature range and size constraints of the 4-SMD package relative to the available board space and thermal environment.

Part Context

This oscillator belongs to the Mercury Electronics XO series, which provides standard frequency solutions. The model number indicates the specific frequency variant within the 18QHTF21 family. These components are engineered for reliability in consumer and industrial electronics, offering a balance between performance and form factor.

Replacement Considerations

Direct replacements must match the 71.04 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Verify pinout compatibility and electrical specifications such as phase noise and jitter if critical. Cross-reference with other manufacturers' equivalent series ensuring identical mechanical and electrical parameters.