18QHTF21-1.73728-PD

Overview

The 18QHTF21-1.73728-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 1.73728 MHz with a frequency stability of ±50ppm. The device supports an LVCMOS output format and functions within a supply voltage range of 1.8V. It features a standby mode for power down capabilities. The component is housed in a compact 4-SMD, No Lead package and is rated for an operating temperature range of -40°C to 85°C.

Feature Summary

• Supports low voltage operation at 1.8V with standby functionality
• Provides stable timing signals via LVCMOS output interface
• Designed for industrial temperature environments ranging from -40°C to 85°C

Applications

• Battery-powered portable electronic devices
• General purpose digital timing circuits
• Embedded systems requiring precise clock synchronization

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure the 4-SMD no-lead package dimensions align with your PCB footprint. Confirm that the 1.8V supply voltage matches your system's power rails. Check for any specific reflow soldering profile recommendations provided in the manufacturer datasheet to ensure reliable assembly.

Selection Notes

Select this component when a low-power, small-footprint oscillator is required for applications needing a 1.73728 MHz reference. Consider the ±50ppm stability limit for timing accuracy needs. The LVCMOS output is suitable for direct interfacing with standard logic families. Evaluate the thermal performance within the specified -40°C to 85°C range for your operational environment.

Part Context

This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series typically offers various frequency options within a standardized 4-SMD package. These components are designed to replace through-hole crystals or larger oscillator packages in modern miniaturized electronics, providing integrated timing solutions with low current consumption.

Replacement Considerations

Direct substitutes may include other 1.73728 MHz XO models from different manufacturers offering identical 4-SMD pinouts and LVCMOS outputs. Verify equivalent electrical parameters such as supply voltage, current consumption, and stability before substitution.