18QHTF21-8.448-OE

Overview

The 18QHTF21-8.448-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 8.448 MHz and utilizes LVCMOS output logic levels. The device is designed for operation with a supply voltage of 1.8V and includes an enable/disable control function. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Feature Summary

• Supports LVCMOS output interface for digital logic compatibility
• Integrates enable and disable control functionality
• Operates on a 1.8V power supply
• Utilizes a leadless SMD package design

Applications

• General-purpose clock signal generation
• Digital system timing references
• Embedded controller clock sources
• Communication module synchronization

Procurement Notes

Verify the specific ordering suffix to ensure the correct package variant and tolerance specifications match the design requirements. Confirm that the 1.8V supply voltage aligns with the target circuit's power rails. Check for any specific environmental ratings or reliability certifications required for the intended application environment before finalizing the order.

Selection Notes

Select this component when a low-voltage 1.8V supply is available and LVCMOS outputs are required. Ensure the 8.448 MHz frequency meets the system clock needs. Consider the small form factor of the 4-SMD package for space-constrained designs. Verify that the enable/disable feature is necessary for power management strategies in the application.

Part Context

This part belongs to the Mercury Electronics standard XO series, which provides reliable quartz-based timing solutions. The manufacturer specializes in frequency control products including crystals and oscillators. This specific model represents a compact, low-voltage option within their portfolio of surface-mount oscillators.

Replacement Considerations

Direct substitutes must match the 8.448 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify pinout compatibility and electrical characteristics before substitution. Consult official cross-reference lists from Mercury Electronics or authorized distributors for confirmed equivalent parts.