18QHTF21-68.670-OE

Overview

The 18QHTF21-68.670-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 68.67 MHz with an LVCMOS output logic level. The device supports a supply voltage of 1.8V and includes enable/disable functionality for power management. It is housed in a compact 4-SMD, No Lead surface mount package. The component is designed for operation within a temperature range of -40°C to 85°C.

Feature Summary

• Supports 1.8V supply voltage with integrated enable and disable control pins
• Generates LVCMOS output signals suitable for digital logic interfaces
• Utilizes a 4-SMD no-lead surface mount package for board space efficiency

Applications

• General clock signal generation for embedded systems
• Timing reference for digital communication interfaces
• Power-sensitive portable electronic devices requiring low voltage operation

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 stability meets the oscillator's operational specifications. Ensure the PCB footprint matches the 4-SMD no-lead package dimensions provided in the official datasheet to prevent assembly errors.

Selection Notes

Select this component when a low-voltage 1.8V clock source is required for LVCMOS-compatible circuits. Consider the enable/disable feature if dynamic power management is necessary for the application. Evaluate the operating temperature range of -40°C to 85°C to ensure suitability for the intended environmental conditions.

Part Context

This model belongs to the Mercury Electronics 18QHTF21 series of surface mount oscillators. The series typically offers various frequency options within a standardized small outline package format. The 'OE' suffix often denotes specific ordering or packaging configurations defined by the manufacturer.

Replacement Considerations

Direct replacements must match the 68.67 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Verify pin compatibility and thermal characteristics. Cross-reference with other Mercury Electronics models in the same series for equivalent performance metrics.