18QHTF21-108.367957-PD

Overview

The 18QHTF21-108.367957-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 108.367957 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 with dimensions of 2.0mm x 1.6mm. This component is designed for applications requiring precise clock signals within a small form factor.

Feature Summary

• LVCMOS output logic for standard digital interfacing
• Integrated standby mode to reduce power consumption
• Compact surface-mount package design

Applications

• General purpose clock generation in embedded systems
• Timing reference for digital signal processing circuits
• Clock source for communication interfaces

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure the 1.8V supply voltage aligns with your system's power rails. Confirm that 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 assembly and long-term performance.

Selection Notes

Select this component when a precise 108.367957 MHz clock signal is required in a space-constrained environment. The LVCMOS output is suitable for standard CMOS logic families. Consider the power-down feature if battery life or thermal management is a priority. Verify that the operating temperature range meets your application's environmental conditions. Compare against other Mercury oscillators in the QHTF series for alternative frequencies or package sizes.

Part Context

This part belongs to the Mercury Electronics QHTF series of surface-mount crystal oscillators. The series is known for providing stable clock signals in small packages. Mercury Electronics has a long history in quartz crystal manufacturing, positioning itself as a pioneer in Taiwan. The QHTF series typically offers various frequencies and output types to meet diverse electronic design needs.

Replacement Considerations

Direct replacements must match the 108.367957 MHz frequency, 1.8V supply, LVCMOS output, and 2.0x1.6mm package. Other Mercury parts in the 18QHTF21 series may offer different frequencies but share similar electrical characteristics. Cross-referencing with distributors for equivalent components from other manufacturers requires careful verification of pinout and electrical specs.