18QHTF21-41.657-OE

Oscillators Overview

The 18QHTF21-41.657-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 41.657 MHz and utilizes LVCMOS output logic for digital signal interfacing. The device functions with a supply voltage of 1.8V and includes an enable/disable control pin for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm. The component is RoHS compliant and classified under Moisture Sensitivity Level 1, indicating unlimited exposure to ambient conditions.

Oscillators Feature Summary

• Integrates LVCMOS output logic for direct digital interface compatibility
• Features an enable/disable pin for active power management control
• Utilizes a low-profile surface-mount package for space-constrained designs

Oscillators Applications

• Digital clock generation in embedded systems
• Timing reference for microcontrollers
• Synchronization sources for data communication interfaces

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply rail is stable within the operational limits specified in the official datasheet. Ensure the PCB footprint matches the 2.0x1.6mm SMD package dimensions to prevent assembly errors. Check for any specific handling instructions related to the no-lead solder finish.

Oscillators Selection Notes

Select this component when a precise 41.657 MHz timing source is required for low-voltage digital circuits. The integrated enable function makes it suitable for battery-powered applications requiring power conservation. Consider the small form factor for dense board layouts. Verify that the LVCMOS output swing is compatible with the receiving logic levels of the connected components.

Oscillators Part Context

This oscillator belongs to the QHT series from Mercury Electronic Ind. Co., Ltd, a manufacturer specializing in quartz frequency control products. The company has decades of experience in Taiwan's crystal industry. This specific model represents a standard XO variant designed for general-purpose timing applications where size and power efficiency are prioritized over ultra-low phase noise specifications.

Oscillators Replacement Considerations

Direct substitutes must match the 41.657 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify that alternative manufacturers provide equivalent electrical characteristics and thermal performance. Cross-reference the pinout configuration to ensure compatibility with existing PCB traces.