18QHTF21-73.200-PD

Overview

The 18QHTF21-73.200-PD is a quartz crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 73.200 MHz with an LVCMOS output logic level. The device supports a supply voltage of 1.8V and includes a standby (power down) function for power management. It is housed in a compact 4-SMD, No Lead package, designed for surface-mount applications requiring precise timing signals.

Feature Summary

• Integrates a standby mode to reduce power consumption when not in active use
• Provides stable LVCMOS signal output suitable for digital logic interfaces
• Utilizes a leadless SMD package for automated surface-mount assembly

Applications

• General-purpose clock generation for embedded systems
• Timing reference for communication interface circuits
• Power-sensitive portable electronic devices

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply voltage aligns with the system's power rails. Ensure the 4-SMD no-lead footprint matches the PCB land pattern dimensions to guarantee proper solder joint formation and mechanical stability during operation.

Selection Notes

Select this component when a low-voltage 1.8V supply is available and a standard LVCMOS interface is required. The choice is driven by the need for a compact, leadless form factor to save board space. Consider the standby feature if power efficiency is a critical design constraint for the application environment.

Part Context

This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series offers various frequencies tailored for different digital timing needs. The 'PD' suffix typically indicates the inclusion of a power-down or standby control capability, distinguishing it from continuously running variants within the same physical package family.

Replacement Considerations

Direct replacements must match the 73.200 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Verify pin compatibility and electrical characteristics of alternative manufacturers' parts to ensure functional equivalence without redesigning the host circuit.