18QHTF21-40.661-OE

Oscillators Overview

The 18QHTF21-40.661-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 40.661 MHz and utilizes LVCMOS output logic. The device is designed for low-voltage applications, requiring a supply voltage of 1.8V. It features an enable/disable control function to manage power consumption. The component is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly on printed circuit boards.

Oscillators Feature Summary

• LVCMOS output logic for digital interface compatibility
• Integrated enable/disable functionality for power management
• Standard XO configuration with precise frequency stability

Oscillators Applications

• General clock signal generation in electronic circuits
• Data communication systems requiring stable timing references
• Embedded systems utilizing low-voltage microcontrollers

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target system design before procurement. Ensure that the 1.8V supply voltage aligns with the available power rails in the application. Confirm that the enable/disable pin logic levels are compatible with the controlling GPIO or logic signals to prevent unintended oscillation states during operation.

Oscillators Selection Notes

Select this component when a fixed 40.661 MHz reference is required with minimal power consumption. The LVCMOS output is appropriate for standard digital logic families operating at 1.8V. Consider the 4-SMD no-lead package for space-constrained designs where automated surface-mount placement is preferred over through-hole technology.

Oscillators Part Context

This part belongs to the Mercury Electronics 18QHTF21 series of surface-mount crystal oscillators. The series typically offers various frequencies and voltage options, all sharing a common compact form factor. The 'OE' suffix likely denotes a specific ordering or packaging variant within the manufacturer's catalog, distinct from other frequency variants in the same physical package family.

Oscillators Replacement Considerations

Direct replacements must match the 40.661 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead footprint. Verify pinout compatibility and electrical characteristics such as phase noise and jitter if specified in the original design constraints.