18QHTF21-75.680-OE

Overview

The 18QHTF21-75.680-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 75.68 MHz with LVCMOS output logic and a supply voltage of 1.8V. The device features enable/disable functionality and exhibits a frequency stability of ±50ppm. It is designed for surface mount installation in a 4-SMD, No Lead package. The operating temperature range spans from -40°C to 85°C, with a maximum supply current of 26mA.

Feature Summary

• Supports Enable/Disable control functionality
• Provides LVCMOS output signal
• Features high frequency stability

Applications

• General clock generation
• Embedded systems timing
• Digital circuit synchronization

Procurement Notes

Verify the specific frequency tolerance and operating temperature range against the official datasheet before integration. Confirm that the 1.8V supply voltage aligns with the target system power rails. Ensure the 4-SMD no-lead package footprint matches the PCB design requirements. Check for any specific handling instructions regarding electrostatic discharge sensitivity during assembly.

Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside precise timing needs. The ±50ppm stability suits applications demanding reliable clock accuracy within industrial temperature ranges. Consider the enable/disable feature if power management or clock gating is necessary for the specific design constraints.

Part Context

This model belongs to the 18QHTF21 series of surface mount oscillators from Mercury Electronics. The series offers various frequencies and voltage options. This specific part provides a 75.68 MHz output, fitting into the standard XO category. It shares the physical package and basic interface characteristics with other variants in the lineup.

Replacement Considerations

Direct substitutes must match the 75.68 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify equivalent stability and temperature ratings. Cross-reference pinouts and enable logic polarity to ensure compatibility without circuit modification.