18QHTF21-74.4955-OE

Overview

The 18QHTF21-74.4955-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 74.4955 MHz and utilizes LVCMOS output logic levels. The device functions with a supply voltage of 1.8V and includes an enable/disable control pin for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. This component is designed for timing applications requiring precise clock signals in space-constrained electronic systems.

Feature Summary

• Integrates LVCMOS output logic for direct digital interface compatibility
• Features an enable/disable control function to manage power consumption
• Utilizes a compact 4-SMD no-lead surface mount package design

Applications

• General purpose clock signal generation in embedded systems
• Timing reference sources for microcontroller units
• Data communication interfaces requiring stable frequency standards

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to ensure correct configuration. Confirm that the required operating temperature range aligns with the system environment specifications. Check for any recent updates to the datasheet regarding electrical characteristics or mechanical dimensions before finalizing the procurement order.

Selection Notes

Select this component when a low-profile surface mount oscillator is required for 1.8V logic systems. Ensure the footprint matches the 2.0x1.6mm SMD land pattern. Consider the enable pin requirement if power cycling functionality is necessary for the application design compared to always-on alternatives.

Part Context

This part belongs to the Mercury Electronics 18QHTF series of standard crystal oscillators. The series offers various frequencies within a small form factor. The 'OE' suffix typically denotes specific packaging or tape-and-reel options as defined by the manufacturer's internal coding standards for distribution.

Replacement Considerations

Direct substitutes include other 74.4955 MHz LVCMOS oscillators in 4-SMD packages from different manufacturers. Verify pinout compatibility and voltage levels before swapping. Cross-reference with Mercury Electronics part numbers such as those in the same 18QHTF family for similar performance profiles.