18QHTF21-72.588-PD

Overview

The 18QHTF21-72.588-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd, operating at a frequency of 72.588 MHz. It utilizes LVCMOS output logic and functions with a supply voltage of 1.8V. The device features a standby or power-down capability for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm. This component is designed for applications requiring precise timing signals within low-voltage digital systems.

Feature Summary

• Provides stable clock signals via LVCMOS output interface
• Supports standby mode to reduce power consumption during inactive periods
• Utilizes lead-free surface mount packaging for automated assembly compatibility

Applications

• Digital signal processing circuits
• Communication equipment timing references
• Embedded system clock generation

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD no-lead package footprint matches your PCB layout constraints. Check for any specific reflow soldering profile recommendations provided by the manufacturer to ensure reliable joint formation during assembly processes.

Selection Notes

Choose this model when a 72.588 MHz frequency is strictly required for synchronization tasks. The LVCMOS output is suitable for direct interfacing with standard CMOS logic families. Consider the 1.8V operation if power efficiency is a primary design constraint compared to higher voltage alternatives. The small form factor makes it appropriate for space-constrained portable devices or high-density board designs where minimal component area is critical.

Part Context

This oscillator belongs to the Mercury Electronics 18QHTF series, which includes various frequencies such as 96.768 MHz and 51.200 MHz. These components share similar physical characteristics and electrical interfaces but differ in their nominal operating frequencies. The series represents Mercury's standard XO offerings, leveraging the company's long history in quartz crystal manufacturing since 1973 to provide reliable frequency control products.

Replacement Considerations

Direct substitutes include other 72.588 MHz oscillators from Mercury Electronics with identical pinouts and specifications. Cross-referencing with other manufacturers requires verifying matching voltage levels, output logic types, and package dimensions to ensure functional compatibility without redesigning the host circuit board.