18QHTF21-12.3667-OE

Overview

The 18QHTF21-12.3667-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 12.3667 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes an enable/disable control feature for power management. It is housed in a compact 4-SMD, No Lead package, designed for surface-mount applications requiring precise timing signals.

Feature Summary

• LVCMOS output logic for digital interface compatibility
• Integrated enable/disable functionality for power control
• Compact 4-SMD no-lead surface mount package

Applications

• General purpose clock signal generation
• Embedded system timing references
• Digital circuit synchronization

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the 4-SMD footprint matches the PCB layout constraints. Cross-reference the OE suffix with manufacturer documentation to confirm any specific ordering or packaging variations.

Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside LVCMOS outputs. The small 4-pin form factor suits space-constrained designs. Consider the enable pin utility for systems requiring dynamic power management. Verify that the 12.3667 MHz frequency meets the exact timing needs of the application without requiring external dividers.

Part Context

This part belongs to the Mercury Electronics XO series, which provides standard clock oscillators. The 18QHTF21 series typically denotes a specific size and performance class within their SMD oscillator lineup. Similar models in this family include other frequencies like 67.2 MHz or 37.888 MHz, sharing the same package and electrical characteristics.

Replacement Considerations

Direct replacements must match the 12.3667 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Check datasheets for compatible parts from other manufacturers offering identical pinouts and electrical specs.