18QHTF21-7.168-PD

Overview

The 18QHTF21-7.168-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 7.168 MHz and utilizes LVCMOS output logic levels. The device is designed for a supply voltage of 1.8V and features a standby or power-down mode capability. It is housed in a compact 4-SMD, no lead package with dimensions suitable for surface-mount applications.

Feature Summary

• Supports low-voltage operation at 1.8V
• Includes standby or power-down functionality
• Provides LVCMOS output signal compatibility

Applications

• General-purpose digital clock generation
• Embedded system timing references
• Consumer electronics circuit boards

Procurement Notes

Verify the exact frequency tolerance and load capacitance requirements against the specific application datasheet before procurement. Confirm that the 1.8V supply voltage aligns with the target system's power rails. Ensure the 4-SMD no-lead package footprint matches the PCB design constraints to guarantee proper soldering and mechanical stability during assembly.

Selection Notes

Select this component when a precise 7.168 MHz reference is required for low-power systems. The LVCMOS interface ensures compatibility with standard digital logic families. The inclusion of a power-down feature makes it suitable for battery-operated devices where energy conservation is critical. Verify thermal performance and stability specifications against the operating environment conditions.

Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz crystal components. The manufacturer has a long history in Taiwan as a pioneer in crystal manufacturing. This series typically offers standard frequency options in small form factors, catering to modern miniaturized electronic designs requiring reliable timing sources.

Replacement Considerations

Check for direct substitutes within the same series offering identical pinouts and electrical characteristics. Ensure any replacement maintains the 1.8V supply requirement and LVCMOS output type. Verify that the alternative component supports the necessary standby mode if power management is a design constraint.