18QHTF21-122.70444-OE

Overview

The 18QHTF21-122.70444-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 122.70444 MHz and utilizes LVCMOS output logic. The device is designed for low-voltage applications with 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 for digital interface compatibility
• Integrated enable/disable control functionality
• Standard crystal oscillator configuration
• Surface-mount package design

Applications

• Digital signal processing systems
• Communication equipment clocking
• Embedded system timing references
• Consumer electronics timing 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 power rails. Ensure the PCB footprint matches the 4-SMD No Lead package dimensions specified in the official datasheet to guarantee proper solder joint formation and mechanical stability during assembly processes.

Selection Notes

Select this component when a precise 122.70444 MHz reference is required for LVCMOS-compatible digital circuits. Consider the 1.8V operating voltage constraint and the need for active enable/disable control. Evaluate the thermal performance and frequency stability requirements against the standard specifications provided in the manufacturer documentation to ensure reliable operation within the intended environmental conditions.

Part Context

This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series typically offers various frequency options within a standardized package form factor. The 'OE' suffix likely denotes a specific ordering or packaging variant, while the core electrical characteristics remain consistent with the standard XO family specifications defined by the manufacturer.

Replacement Considerations

Direct substitutes must match the 122.70444 MHz frequency, LVCMOS output type, 1.8V supply voltage, and 4-SMD No Lead package. Verify pinout compatibility and electrical parameters such as phase noise and jitter against the original specification sheet to ensure functional equivalence in the application.