18QHTF21-12.000393-OE

Overview

The 18QHTF21-12.000393-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 12.000393 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and includes an enable/disable control function. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Feature Summary

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

Applications

• Digital signal processing clock sources
• Communication equipment timing references
• Embedded system microcontroller clocks

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 specifications. Cross-reference the part number suffix to confirm the exact frequency variant, as minor decimal differences indicate distinct product codes.

Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside LVCMOS signaling standards. The enable pin feature allows for power management strategies in battery-operated devices. Consider the small form factor of the 4-SMD package for space-constrained designs. Verify that the operating temperature range meets the environmental conditions of the intended application.

Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz frequency control products. The series typically offers various frequencies within a standardized package profile. Mercury Electronics has a long history in Taiwan's crystal manufacturing industry, providing reliable timing solutions for consumer and industrial electronics markets.

Replacement Considerations

Direct substitutes must match the 12.000393 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Check datasheets for compatible parts from other manufacturers offering identical electrical characteristics and pinout configurations. Ensure thermal and mechanical specifications are equivalent for seamless integration.