18QHTF21-109.4375-PD

Overview

The 18QHTF21-109.4375-PD is a 109.4375 MHz crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It utilizes LVCMOS output logic and operates at a supply voltage of 1.8V. The device features a standby function for power management and is housed in a compact 4-SMD, No Lead package. This surface-mount component is designed for applications requiring precise timing signals within standard industrial temperature ranges.

Feature Summary

• LVCMOS output logic for digital interface compatibility
• Integrated standby mode for power reduction
• Compact surface-mount package design

Applications

• General clock signal generation
• Digital system timing references
• Embedded electronics control circuits

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply voltage aligns with the system power architecture. Ensure the 4-SMD no-lead package footprint matches the PCB layout specifications to guarantee proper soldering and mechanical stability during assembly processes.

Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside LVCMOS signaling standards. Consider the 109.4375 MHz frequency specifically for data communication interfaces or processor clocking needs. Evaluate the need for power-down capabilities to optimize energy consumption in battery-operated or portable electronic devices requiring stable high-frequency timing.

Part Context

This part belongs to the Mercury Electronics XO series, which provides standard frequency oscillators. The manufacturer specializes in quartz crystal products with decades of industry experience. The 18QHTF21 series typically offers various frequency options within a consistent small form factor, catering to diverse embedded timing requirements across consumer and industrial electronics sectors.

Replacement Considerations

Cross-reference compatible parts such as 18QHTF21-109.4375-OE from the same manufacturer family. Verify pinout compatibility and electrical parameter equivalence before substitution. Ensure any alternative maintains the LVCMOS output type and 1.8V operating voltage to prevent circuit malfunction.