18QHTF21-66.734-OE

Overview

The 18QHTF21-66.734-OE is a quartz crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 66.734 MHz and utilizes LVCMOS output signaling. The device functions with a supply voltage of 1.8V and includes enable/disable control capabilities. It is housed in a compact 4-SMD, no lead package with dimensions of 2.0x1.6 mm.

Feature Summary

• Generates precise clock signals using quartz crystal technology
• Supports low voltage operation at 1.8V for power efficiency
• Features integrated enable and disable functionality for system management

Applications

• General purpose clock signal generation
• Embedded systems requiring standard oscillators
• Digital circuit timing references

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your design specifications before ordering. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD footprint matches your PCB layout constraints. Check for any specific environmental operating temperature ranges required by your application to ensure reliability under all conditions.

Selection Notes

Select this component when a standard LVCMOS oscillator is required at 66.734 MHz. Consider the 1.8V operating voltage as a primary constraint for power supply design. The small 2.0x1.6 mm package size makes it suitable for space-constrained designs. Evaluate the enable/disable feature if dynamic power management or clock gating is necessary for the target application.

Part Context

This part belongs to the Mercury Electronics SMD Oscillator series, specifically designed for surface-mount applications. The manufacturer specializes in frequency control products including crystals and oscillators. This model represents a standard XO variant within their portfolio, offering a balance of performance and compact form factor for modern electronic devices.

Replacement Considerations

Direct substitutes may include other 66.734 MHz LVCMOS oscillators from different manufacturers provided they match the 1.8V supply, 4-SMD package, and pinout configuration. Verify electrical parameters such as phase noise and jitter specifications to ensure compatibility with sensitive digital circuits.