18QHTF21-57.5491-OE

Overview

The 18QHTF21-57.5491-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 57.5491 MHz and utilizes LVCMOS output logic levels. The device is designed for low-voltage applications, functioning with a supply voltage of 1.8V. It includes an enable/disable control feature to manage power consumption. The component is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly on printed circuit boards.

Feature Summary

• Standard XO configuration with LVCMOS output
• Integrated enable/disable functionality
• Low voltage operation at 1.8V

Applications

• Digital clock signal generation
• Microprocessor timing references
• Communication interface synchronization

Procurement Notes

Verify the specific part number suffix against official manufacturer documentation to ensure correct frequency and package specifications. Confirm that the LVCMOS output type matches the target circuit requirements. Check the operating temperature range compatibility with the intended environment. Ensure the 1.8V supply voltage aligns with the system design constraints before procurement.

Selection Notes

Select this component when a precise 57.5491 MHz clock source is required for low-power digital systems. The LVCMOS output is suitable for direct interfacing with standard logic families. Consider the 1.8V supply requirement and ensure adequate decoupling. The small 4-SMD footprint aids in space-constrained designs requiring reliable timing solutions.

Part Context

This oscillator belongs to the Mercury Electronics standard XO series, which provides reliable frequency control solutions. The brand has extensive experience in quartz crystal manufacturing. This specific model represents a common frequency option within their portfolio, designed for general-purpose timing applications in consumer and industrial electronics.

Replacement Considerations

Direct substitutes must match the 57.5491 MHz frequency, LVCMOS output, and 1.8V supply voltage. Verify pinout compatibility for the 4-SMD No Lead package. Alternative models from other manufacturers require careful evaluation of electrical parameters and mechanical dimensions to ensure functional equivalence.