18QHTF21-12.688656-OE

Overview

The 18QHTF21-12.688656-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 12.688656 MHz with LVCMOS output logic. The device requires a 1.8V supply voltage and features Enable/Disable control functionality. It is housed in a compact 4-SMD, No Lead package designed for surface-mount applications.

Feature Summary

• LVCMOS output logic for digital interface compatibility
• Enable/Disable control capability for power management
• Compact 4-SMD No Lead surface-mount package design

Applications

• Portable electronic devices requiring low voltage operation
• Digital systems utilizing LVCMOS clock signals
• Embedded circuits needing precise frequency reference

Procurement Notes

Verify the specific suffix OE against official Mercury Electronics documentation to confirm enable/disable functionality versus other variants like PD. Ensure the 1.8V supply requirement aligns with target system rails. Confirm package dimensions match PCB footprint specifications before integration.

Selection Notes

Select this component when a 12.688656 MHz clock source is required with LVCMOS outputs. The 1.8V operating voltage makes it suitable for modern low-power digital designs. The Enable/Disable feature allows for dynamic power control in battery-operated applications.

Part Context

This part belongs to the QHTF series of crystal oscillators from Mercury Electronics. The series offers various frequencies and voltages. The 18 prefix indicates the 1.8V supply variant. The model provides a stable clock signal for synchronous digital circuits.

Replacement Considerations

Direct substitutes include other 12.688656 MHz LVCMOS oscillators in 4-SMD packages with 1.8V operation. Verify pinout compatibility and electrical parameters such as load capacitance and drive strength before substitution.