18QHTF21-78.1758-OE

Overview

The 18QHTF21-78.1758-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 78.1758 MHz and utilizes LVCMOS output logic. The device is designed for low-voltage applications, functioning with a supply voltage of 1.8V. It features an enable/disable control function 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

• LVCMOS output logic for digital interface compatibility
• Integrated enable/disable control functionality
• Low voltage operation at 1.8V supply
• Compact 4-SMD no lead surface mount package

Applications

• General clock signal generation in electronic circuits
• Digital system timing references
• Embedded device clock sources

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the official datasheet before procurement. Ensure the 1.8V supply voltage aligns with the target system design. Confirm that the 4-SMD no lead package dimensions fit the designated footprint on the PCB layout. Check for any specific environmental operating temperature ratings required for the application environment.

Selection Notes

Select this component when a precise 78.1758 MHz clock source is required with low power consumption capabilities. The LVCMOS output is suitable for standard digital logic families. Consider the enable/disable feature if power management during idle states is necessary. The small form factor makes it appropriate for space-constrained designs requiring reliable frequency stability.

Part Context

This part belongs to the Mercury Electronics XO series, which provides stable frequency references for various electronic applications. The manufacturer specializes in quartz crystals and oscillators, offering a range of packages and frequencies. This specific model represents a standard configuration within their portfolio, focusing on efficiency and compactness for modern electronics.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. When replacing this component, ensure the new part matches the 78.1758 MHz frequency, 1.8V supply voltage, LVCMOS output type, and 4-SMD package dimensions to maintain electrical and mechanical compatibility.