18QHTF21-27.4688-PD

Oscillators Overview

The 18QHTF21-27.4688-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 27.4688 MHz with an LVCMOS output logic level. The device requires a 1.8V supply voltage and supports a standby or power-down function for energy management. It features a frequency stability of ±50ppm and functions within an operating temperature range of -40°C to 85°C. The component is housed in a compact 4-SMD, No Lead package.

Oscillators Feature Summary

• Supports standby and power-down modes for efficient power management
• Delivers LVCMOS output signals compatible with standard digital interfaces
• Operates reliably across a wide industrial temperature range

Oscillators Applications

• General purpose timing reference in embedded systems
• Clock source for microcontrollers requiring low voltage operation
• Digital communication interface synchronization

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply rail is stable and meets the current consumption specifications during active and standby states. Ensure the PCB footprint matches the 4-SMD no-lead package dimensions to prevent assembly issues. Cross-reference the datasheet for any specific soldering profile recommendations to maintain component integrity.

Oscillators Selection Notes

Select this oscillator when a precise 27.4688 MHz clock signal is required for digital logic circuits. The LVCMOS output is suitable for direct interfacing with standard CMOS devices without additional buffering. Consider the ±50ppm stability if tight frequency accuracy is critical for the application. The low voltage operation makes it ideal for battery-powered or energy-constrained portable electronics where power efficiency is a priority.

Oscillators Part Context

This component belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series offers various frequency options within a standardized small form factor. These oscillators are designed for applications requiring reliable timing in consumer electronics and industrial control systems. The manufacturer provides consistent performance characteristics across the product line, ensuring compatibility with common design architectures.

Oscillators Replacement Considerations

Direct replacements must match the 27.4688 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify that alternative sources offer equivalent ±50ppm stability and temperature range. Check pinout compatibility to ensure seamless integration without PCB modifications.