18QHTF21-77.000-OE

Overview

The 18QHTF21-77.000-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 77.0 MHz and utilizes LVCMOS output logic levels. 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 2.0x1.6 mm, designed for surface-mount applications.

Feature Summary

• Integrates enable/disable functionality for efficient power management
• Provides stable LVCMOS clock signals for digital circuits
• Utilizes a miniature surface-mount footprint for space-constrained designs

Applications

• High-speed data communication interfaces
• Embedded system clock generation
• Consumer electronics timing references

Procurement Notes

Verify the specific suffix 'OE' against official datasheets to confirm the enable feature and voltage requirements. Ensure compatibility with the target PCB footprint and reflow soldering profiles. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components. Confirm that the 1.8V supply aligns with the system design constraints before procurement.

Selection Notes

Select this component when a precise 77.0 MHz clock signal is required with low-voltage operation. The integrated enable pin offers flexibility for power-sensitive applications compared to non-controlled oscillators. Consider the small 2.0x1.6 mm package size for dense board layouts. Validate electrical specifications against the system's input requirements to ensure reliable signal integrity.

Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which focuses on low-profile quartz-based timing solutions. The series typically supports various frequencies and voltages within a standardized SMD form factor. This specific model represents a mid-range frequency option suitable for general-purpose digital timing needs.

Replacement Considerations

Direct substitutes include other 77.0 MHz LVCMOS oscillators in 2.0x1.6mm packages with enable pins. Verify pinout compatibility and electrical parameters such as load capacitance and drive strength. Alternative models from different manufacturers may require adapter considerations if pin definitions differ.