18QHTF21-11.278336-OE

Overview

The 18QHTF21-11.278336-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 11.278336 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features an enable/disable control function. It is housed in a compact 4-SMD, No Lead package suitable for surface-mount applications.

Feature Summary

• Supports active enable and disable control for power management
• Utilizes LVCMOS output logic for digital interface compatibility
• Designed for low-voltage operation at 1.8V

Applications

• Embedded systems requiring precise clock timing
• Portable electronic devices with power constraints
• Digital signal processing circuits

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's power rails. Ensure the 4-SMD no-lead package footprint matches the PCB layout specifications to guarantee proper soldering and mechanical stability during assembly.

Selection Notes

Select this component when a stable 11.278336 MHz reference is required for LVCMOS-compatible digital logic. The choice is driven by the need for low-power operation at 1.8V and the availability of hardware-based enable/disable functionality. Consider the small form factor of the 4-SMD package for space-constrained designs where surface-mount technology is preferred over through-hole alternatives.

Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz crystal frequency control products. The manufacturer has decades of experience in Taiwan's quartz industry. This series typically offers standard performance levels with various frequency options, catering to general-purpose timing needs in consumer and industrial electronics markets.

Replacement Considerations

Direct substitutes within the same series include models such as 18QHTF21-4.31818-OE or 18QHTF21-8.300-OE, provided the frequency difference is acceptable for the application. Verify that any replacement maintains the 1.8V supply requirement and LVCMOS output type to ensure electrical compatibility.