18QHTF21-13.574-OE

Overview

The 18QHTF21-13.574-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 13.574 MHz and utilizes an LVCMOS output signal type. The device is designed for low-voltage applications, requiring a supply voltage of 1.8V. A key functional characteristic is the inclusion of an Enable/Disable control pin, allowing for power management flexibility in circuit designs. The component is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm, suitable for surface-mount assembly processes.

Feature Summary

• Features LVCMOS output interface for digital logic compatibility
• Includes enable/disable functionality for power control
• Operates on a 1.8V supply voltage
• Utilizes a compact 4-SMD no-lead package

Applications

• General clock generation in embedded systems
• Timing reference for microcontrollers
• Digital signal processing circuits
• Communication interface modules

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your system design before ordering. Confirm that the 1.8V supply rail is stable and within the operational limits specified in the official datasheet. Ensure the PCB footprint matches the 2.0x1.6 mm SMD package dimensions to avoid assembly issues. Check for any specific reflow soldering profile recommendations provided by the manufacturer to maintain component integrity during manufacturing.

Selection Notes

Select this component when a precise 13.574 MHz timing source is required for low-power digital applications. The LVCMOS output ensures direct interfacing with standard logic families without additional buffering. The enable pin allows for dynamic power saving, making it suitable for battery-operated devices. Consider the small form factor if space constraints are critical in the design. Verify that the operating temperature range meets the environmental conditions of the intended application.

Part Context

This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series offers various frequencies and voltage options, all sharing the same compact 2.0x1.6 mm package. Mercury Electronic has been a supplier of frequency control products since 1973, specializing in quartz crystals and oscillators. This specific model represents a standard XO variant optimized for modern low-voltage digital circuits.

Replacement Considerations

Direct substitutes include other 13.574 MHz LVCMOS oscillators in 4-SMD packages with 1.8V operation. Cross-reference electrical parameters such as frequency stability, phase noise, and current consumption. Ensure the replacement supports the enable/disable function if power management is required. Verify package compatibility to maintain PCB layout integrity.