18QHTF21-7.32781-OE

Overview

The 18QHTF21-7.32781-OE is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co. Ltd. It operates at a frequency of 7.32781 MHz and utilizes LVCMOS output logic levels. The device supports a supply voltage of 2.5V and features an Enable/Disable control function for power management. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Feature Summary

• LVCMOS output interface
• Enable/Disable control functionality
• Compact 4-SMD no lead package

Applications

• General electronic timing circuits
• Embedded system clock sources
• Digital signal processing interfaces

Procurement Notes

Verify the specific ordering suffix to confirm electrical characteristics such as voltage and control type. Ensure the package type matches the PCB footprint requirements. Confirm that the enable/disable feature aligns with system power management strategies before finalizing procurement.

Selection Notes

Select this component when a 7.32781 MHz LVCMOS signal is required with active low or high enable control. Consider the 2.5V supply constraint and the 4-SMD form factor for space-limited designs. Compare against other variants in the QHTF series for different voltage or standby options if needed.

Part Context

This part belongs to the Mercury Electronic QHTF series of surface-mount crystal oscillators. The series offers various frequencies and voltage options. The 18 prefix typically indicates the 1.8V variant family, though this specific model specifies 2.5V operation, highlighting the importance of checking datasheet details for exact electrical ratings within the product line.

Replacement Considerations

Direct substitutes include the 25QHTF21-7.32781-OE which shares the same frequency and package but operates at 2.5V with similar control. Verify pin compatibility and voltage tolerance before swapping.