18QHTF21-112.240-OE

Overview

The 18QHTF21-112.240-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 112.24 MHz and utilizes LVCMOS output logic levels. The device is designed for low-voltage applications, functioning at a supply voltage of 1.8V. It features an integrated enable/disable control function to manage power consumption. The component is housed in a compact 4-SMD, No Lead surface-mount package, suitable for automated assembly processes in electronic circuits requiring precise timing signals.

Feature Summary

• Supports LVCMOS output signal compatibility
• Includes hardware enable and disable control functionality
• Operates on a 1.8V single supply voltage
• Utilizes a lead-free 4-pin SMD package

Applications

• Digital communication systems requiring clock synchronization
• Embedded microcontroller timing references
• Portable electronic devices with low-power constraints
• Industrial control boards needing stable frequency sources

Procurement Notes

Verify the specific suffix OE against the manufacturer's current datasheet to confirm availability and exact electrical tolerances. Ensure the 1.8V supply requirement aligns with the target circuit design. Confirm that the LVCMOS output swing is compatible with the receiving logic inputs. Check for any recent revisions to the 4-SMD package dimensions prior to final PCB layout approval.

Selection Notes

Select this component when a 112.24 MHz clock source is required with low voltage operation. The enable pin allows for dynamic power management in battery-operated systems. Consider the thermal characteristics of the leadless package during high-density board placement. Validate that the load capacitance requirements match the connected system components for accurate frequency stability.

Part Context

This oscillator belongs to the Mercury Electronics XO series, which focuses on quartz-based frequency generation. The company has specialized in crystal manufacturing since 1973, establishing itself as a pioneer in Taiwan's quartz industry. This specific model represents their standard surface-mount offering, balancing performance with compact form factors for modern electronics.

Replacement Considerations

Direct substitutes may include other 112.24 MHz LVCMOS oscillators from different manufacturers if pin-out and voltage compatibility are verified. Ensure the replacement maintains the same 4-SMD footprint and enable/disable functionality. Cross-reference specifications for jitter and phase noise if the application demands strict timing precision beyond standard general-purpose requirements.