18QHTF21-65.653-OE

Overview

The 18QHTF21-65.653-OE is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a nominal frequency of 65.653 MHz and utilizes LVCMOS output logic. The device is designed for low voltage applications, requiring a 1.8V supply. 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.

Feature Summary

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

Applications

• Precision timing circuits in electronic devices
• Clock signal generation for digital systems
• Low voltage embedded system applications

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the official datasheet before procurement. Confirm that the 1.8V supply voltage aligns with the target system's power rails. Ensure the 4-SMD package footprint matches the PCB layout. Check RoHS compliance status if environmental regulations apply to the final product assembly.

Selection Notes

Select this component when a precise 65.653 MHz clock source is required in space-constrained designs. The LVCMOS output is suitable for direct interfacing with standard digital logic families. The enable pin allows for dynamic power control, which is beneficial for battery-operated or energy-efficient applications. Verify thermal performance within the specified operating temperature range.

Part Context

This part belongs to the QHTF series of crystal oscillators from Mercury Electronics. The series offers various frequencies and packages. Mercury Electronic has been manufacturing frequency control products since 1973, specializing in quartz crystals and oscillators. This specific model represents a standard XO variant optimized for modern low-voltage digital applications.

Replacement Considerations

Direct substitutes include other 65.653 MHz LVCMOS oscillators in similar SMD packages from compatible manufacturers. Ensure equivalent electrical specifications such as supply voltage and output drive strength. Verify mechanical dimensions for board compatibility. Cross-reference with Mercury's own variants like the 18QHTF21-65.300-OE only if frequency differences are acceptable.