18QHTF21-75.963-OE

Overview

The 18QHTF21-75.963-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 75.963 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes an enable/disable control feature. It is housed in a compact 4-SMD, no lead package with dimensions of 2.0x1.6 mm.

Feature Summary

• Integrates LVCMOS output logic for digital interface compatibility
• Supports active low or high enable/disable control functionality
• Utilizes a surface-mount package design for automated assembly

Applications

• General clock signal generation in electronic circuits
• Timing reference sources for digital systems
• Embedded system clock inputs

Procurement Notes

Verify the specific operating voltage and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply rail is stable and within tolerance to ensure accurate frequency performance. Ensure the PCB footprint matches the 4-SMD no-lead package dimensions to prevent mounting issues during assembly.

Selection Notes

Select this component when a precise 75.963 MHz timing source is required for low-voltage digital applications. Consider the 1.8V supply constraint and the need for an enable pin when designing power management strategies. Evaluate the small form factor against available board space constraints to ensure physical compatibility with the host device layout.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz crystal frequency control products. The manufacturer has a history dating back to 1973, focusing on precision oscillators. This specific model represents a standard XO variant designed for general-purpose timing applications requiring a fixed frequency output.

Replacement Considerations

Direct substitutes include other 75.963 MHz LVCMOS oscillators with identical 1.8V supply and 4-SMD no-lead packaging. Verify pinout compatibility and electrical specifications such as phase noise and stability before swapping. Alternative models from different manufacturers must match the mechanical outline and enable logic polarity.