18QHTF21-6.63166-OE

Overview

The 18QHTF21-6.63166-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 6.63166 MHz and utilizes LVCMOS output logic. The device is designed for surface mount applications in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. It functions within an operating temperature range of -40°C to 85°C and requires a supply voltage of 1.8V. The maximum supply current is specified as 22mA, and the unit includes enable/disable functionality.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes hardware enable and disable control capability
• Designed for surface mount assembly in small form factor packages

Applications

• General purpose clock signal generation in electronic circuits
• Timing reference for industrial control systems
• Clock source for consumer electronics devices

Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm pinout configuration and electrical specifications. Ensure the selected variant matches the required supply voltage and output logic levels for the target application. Cross-reference the part number with the latest datasheet to validate frequency stability and operating temperature ranges before procurement.

Selection Notes

Select this component when a low-profile surface mount oscillator is required for space-constrained designs. Consider the 1.8V supply requirement and LVCMOS output compatibility with the host system's logic levels. Evaluate the thermal performance requirements against the -40°C to 85°C operating range to ensure reliability under expected environmental conditions.

Part Context

This oscillator belongs to the QHTF series from Mercury Electronic Ind. Co., Ltd, a supplier specializing in quartz crystals and timing components. The company has a history of manufacturing frequency control products including TCXOs and VCTCXOs. This specific model represents a standard XO solution suitable for general timing applications requiring precise frequency generation.

Replacement Considerations

Direct substitutes include other models from the same series such as the 18QHTF21-100.640-OE or 18QHTF21-13.1313-OE, provided the frequency difference is acceptable for the application. Verify pin compatibility and package dimensions when considering alternative frequencies within the same product family.