18QHTF21-112.240-PD

Overview

The 18QHTF21-112.240-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 112.24 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a standby or power-down function to reduce consumption during inactive periods. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Feature Summary

• Supports low-voltage operation with 1.8V supply requirement
• Includes standby mode capability for power management
• Provides LVCMOS output signal compatibility

Applications

• Digital signal processing systems
• Communication equipment timing references
• Embedded control circuits

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply rail is stable and within the operational limits specified in the official datasheet. Ensure the PCB footprint matches the 4-SMD No Lead package dimensions to guarantee proper soldering and electrical connection.

Selection Notes

Select this component when a 112.24 MHz clock source is required with low voltage constraints. Consider the LVCMOS interface compatibility with downstream logic families. Evaluate the need for power-down functionality if energy efficiency is critical. Compare package size against available board space to ensure the 4-SMD form factor fits the assembly layout.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies in a small SMD package. The series typically supports 1.8V operation and includes power-down features. Other variants in this family differ primarily in output frequency while maintaining similar electrical characteristics and physical dimensions.

Replacement Considerations

Direct substitutes must match the 112.24 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD No Lead package. Verify pinout compatibility and thermal performance. Cross-reference with other manufacturers offering equivalent XO specifications if availability is an issue.