18QHTF21-73.8888-PD

Overview

The 18QHTF21-73.8888-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd, designed for precision timing applications requiring a frequency of 73.8888 MHz. This device utilizes LVCMOS output logic and operates at a supply voltage of 1.8V. It features a Standby (Power Down) control function to manage power consumption effectively. The component is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm, suitable for space-constrained surface-mount designs.

Feature Summary

• LVCMOS output logic for digital interface compatibility
• Standby mode support for power management
• Compact 4-SMD no-lead surface mount package

Applications

• General purpose clock generation in embedded systems
• Timing reference for data communication interfaces
• Digital signal processing circuits

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure the 1.8V supply voltage aligns with your system's power rails. Confirm that the Standby pin functionality meets your power-down strategy. Check the operating temperature range specifications to ensure reliability under your intended environmental conditions. Validate the 4-SMD footprint compatibility with your PCB layout.

Selection Notes

Select this oscillator when a precise 73.8888 MHz clock signal is required with low power consumption capabilities. The LVCMOS output ensures compatibility with standard digital logic families. Consider the 1.8V operating voltage if your system utilizes lower voltage domains. The compact 2.0x1.6mm package is ideal for high-density board layouts where space is limited. Evaluate the standby feature benefits for battery-powered or energy-efficient applications.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies within a standardized small outline package. The series provides consistent performance characteristics across different frequency options, allowing for easier supply chain management. The 'PD' suffix indicates the presence of a Power Down/Standby control feature, distinguishing it from continuous operation variants.

Replacement Considerations

Direct replacements must match the 73.8888 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify that substitute parts also include the Standby control function. Cross-reference with other manufacturers offering similar SMD oscillators with identical electrical parameters and pinout configurations.