18QHTF21-73.728-PD

Overview

The 18QHTF21-73.728-PD is a standard crystal oscillator manufactured by Mercury Electronic Ind., Co., Ltd. It operates at a frequency of 73.728 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes a standby (power down) feature for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm.

Feature Summary

• Integrates LVCMOS output logic for standard digital interface compatibility
• Supports standby mode to reduce power consumption during inactive periods
• Utilizes a leadless surface-mount package for space-constrained designs

Applications

• General timing clock generation in embedded systems
• Data communication interfaces requiring precise clock signals
• Consumer electronics utilizing low-voltage logic circuits

Procurement Notes

Verify the specific operating temperature range and load capacitance requirements against the target application's environmental conditions. Confirm that the 1.8V supply voltage aligns with the system's power rail availability. Ensure the PCB footprint matches the 2.0x1.6 mm 4-SMD no-lead package specifications to guarantee proper soldering and mechanical stability during assembly.

Selection Notes

Select this component when a stable 73.728 MHz reference is required for LVCMOS-compatible circuits. Consider the 1.8V supply constraint and the need for power-down functionality. Evaluate the physical size limitations against the 2.0x1.6 mm form factor. Compare performance metrics such as phase noise and stability if available in the official datasheet relative to alternative frequencies or packages.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronic Ind., Co., Ltd, a supplier specializing in quartz crystals and oscillators. The series typically offers various frequencies within a standardized small outline package. The 'PD' suffix indicates the inclusion of a power-down control pin, distinguishing it from continuous-output variants within the same family.

Replacement Considerations

Direct substitutes must match the 73.728 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility, particularly the power-down function. Cross-reference with other manufacturers offering similar low-profile oscillators with identical electrical characteristics.