18QHTF21-123.400-OE

Overview

The 18QHTF21-123.400-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 123.4 MHz and utilizes LVCMOS output logic levels. The device is designed for low-voltage applications, requiring a supply voltage of 1.8V. It features an enable/disable control function to manage power consumption. The component is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly on printed circuit boards.

Feature Summary

• LVCMOS output logic compatibility
• Integrated enable/disable functionality
• Low voltage operation at 1.8V

Applications

• Digital signal processing systems
• Communication equipment clocking
• Embedded system timing references

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your design specifications before procurement. Ensure that the 1.8V supply rail is stable and within the operational limits defined in the official datasheet. Confirm that the PCB footprint matches the 4-SMD, No Lead package dimensions provided by the manufacturer to avoid assembly issues.

Selection Notes

Select this oscillator when a precise 123.4 MHz reference is required with low power consumption capabilities. The LVCMOS interface ensures compatibility with standard digital logic families. Consider the enable/disable feature if power management during idle states is critical for the application. Evaluate the thermal performance and stability requirements to ensure the standard XO meets the environmental conditions.

Part Context

This part belongs to the Mercury Electronics 18QHTF21 series of surface-mount crystal oscillators. The series offers various frequencies with standardized LVCMOS outputs. The 'OE' suffix typically denotes a specific ordering or packaging variant, though functional characteristics remain consistent with the base model specifications for the 1.8V supply voltage and 4-SMD form factor.

Replacement Considerations

Direct replacements must match the 123.4 MHz frequency, LVCMOS output type, 1.8V supply voltage, and 4-SMD package. Verify pinout compatibility and electrical parameters such as phase noise and jitter from competitor datasheets to ensure equivalent performance in the target application.