18QHTF21-66.333-OE

Overview

The 18QHTF21-66.333-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 66.333 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes an enable/disable control feature for power management. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Feature Summary

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

Applications

• Precision timing circuits in electronic devices
• Clock signal generation for digital systems
• Embedded systems requiring stable frequency references

Procurement Notes

Verify the specific operating temperature range and load capacitance requirements against the target application circuit before procurement. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the 4-SMD footprint matches the PCB layout specifications to guarantee proper soldering and mechanical stability during assembly processes.

Selection Notes

Select this component when a 66.333 MHz clock source is required with low-voltage operation. Consider the LVCMOS output swing levels for compatibility with downstream logic families. Evaluate the thermal performance within the specified operating temperature range to ensure long-term frequency stability under varying environmental conditions.

Part Context

This part belongs to the QHTF series of crystal oscillators from Mercury Electronics. The series offers various frequencies and voltage options. The '18' prefix indicates the 1.8V supply variant. The '-OE' suffix typically denotes specific ordering or packaging configurations as defined by the manufacturer's catalog standards.

Replacement Considerations

Direct substitutes must match the 66.333 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package dimensions. Verify pinout compatibility and electrical characteristics such as phase noise and jitter specifications to ensure functional equivalence in the existing circuit design.