18QHTF21-72.843-PD

Overview

The 18QHTF21-72.843-PD is a crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 72.843 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes a standby or power-down function for energy management. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications.

Feature Summary

• LVCMOS output logic interface
• Integrated standby and power-down functionality
• Compact 4-SMD no-lead surface mount package

Applications

• General clock signal generation
• Digital circuit timing reference
• Embedded system clock sources

Procurement Notes

Verify the specific operating temperature range and load capacitance requirements against your design specifications before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD no-lead footprint matches your PCB layout to guarantee proper soldering and mechanical stability during assembly.

Selection Notes

Select this component when a precise 72.843 MHz clock source is required for low-voltage digital systems. Consider the LVCMOS compatibility with downstream logic levels. Evaluate the need for power-down capabilities if energy efficiency is critical. Verify that the small form factor fits within the spatial constraints of the target application.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies in a standardized 4-SMD package. The series typically features LVCMOS outputs and support for low-voltage operation. Other variants in this family share similar physical dimensions and electrical characteristics but differ in nominal frequency and potentially tolerance specifications.

Replacement Considerations

Direct substitutes must match the 72.843 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Check datasheets for equivalent parts from other manufacturers ensuring identical pinout and thermal performance.