18QHTF21-74.571428-OE

Overview

The 18QHTF21-74.571428-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 74.571428 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes enable/disable control capabilities. It is housed in a compact 4-SMD, No Lead package, designed for surface-mount applications requiring precise timing signals.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Integrates enable and disable functionality for power management
• Utilizes a leadless SMD package for automated assembly

Applications

• Digital signal processing systems
• Communication equipment timing circuits
• Embedded system clock generation

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to ensure correct voltage and tolerance specifications. Confirm that the leadless package variant matches the target PCB footprint requirements. Cross-reference the part number with official Mercury Electronics catalogs to validate availability and production status before finalizing procurement plans.

Selection Notes

Select this component when a stable 74.571428 MHz reference is required for low-voltage digital circuits. The LVCMOS output ensures direct interfacing with standard logic families without additional buffering. Consider the enable pin feature if dynamic power saving is necessary during idle periods within the target application environment.

Part Context

This oscillator belongs to the Mercury Electronics XO series, which specializes in quartz-based timing solutions. The company has decades of experience in Taiwan's quartz industry, providing reliable frequency control products. This specific model represents a standard configuration within their portfolio of surface-mount oscillators.

Replacement Considerations

Consult official Mercury Electronics substitution guides for compatible alternatives. Ensure any replacement maintains the 74.571428 MHz frequency, 1.8V supply, and LVCMOS output characteristics. Verify package dimensions match the existing 4-SMD no-lead footprint to prevent mechanical integration issues.