18QHTF21-57.272727-PD

Overview

The 18QHTF21-57.272727-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 57.272727 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes a standby or power-down feature for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6mm. The component supports an operating temperature range typical for commercial applications, ensuring reliable signal generation for digital circuits requiring precise clock timing.

Feature Summary

• Supports low-voltage operation at 1.8V for compatibility with modern low-power systems
• Integrates a standby mode to reduce power consumption when not in active use
• Provides stable LVCMOS output signals for direct interfacing with digital logic

Applications

• Clock generation for high-speed data communication interfaces
• Timing reference for embedded microprocessors and microcontrollers
• Synchronization sources for consumer electronics and portable devices

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the PCB footprint matches the 4-SMD, No Lead package dimensions of 2.0x1.6mm. Check for any specific reflow soldering profile recommendations provided by the manufacturer to ensure joint integrity during assembly.

Selection Notes

Select this component when a precise 57.272727 MHz clock source is required in space-constrained designs. The 1.8V supply voltage makes it suitable for battery-operated or low-power applications. Consider the LVCMOS output level for direct connection to compatible logic families without additional buffering. The small form factor allows for dense board layouts in mobile or handheld electronic devices.

Part Context

This part belongs to the QHTF series of surface-mount crystal oscillators from Mercury Electronics. The series offers various frequencies and voltage options within a standardized small outline package. These oscillators are designed to replace discrete crystal and buffer combinations, simplifying the bill of materials and reducing assembly complexity for OEMs seeking reliable timing solutions.

Replacement Considerations

Direct replacements must match the 57.272727 MHz frequency, 1.8V supply, and LVCMOS output type. Verify that alternative components fit the 4-SMD, No Lead 2.0x1.6mm footprint. Ensure equivalent electrical characteristics such as phase noise and stability are met for the specific application environment.