18QHTF21-116.6666-PD

Overview

The 18QHTF21-116.6666-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a nominal frequency of 116.6666 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a standby or power-down function to manage energy consumption during inactive periods. The component is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly on printed circuit boards.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes standby and power-down functionality for power management
• Operates with a 1.8V supply voltage requirement

Applications

• General clock signal generation in electronic systems
• Digital circuit timing reference applications
• Embedded system clock sources

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Ensure that the 1.8V supply rail stability meets the oscillator's operational specifications. Confirm that the PCB footprint matches the 4-SMD, No Lead package dimensions provided in the official datasheet to ensure correct mechanical fit and soldering reliability.

Selection Notes

Select this component when a precise 116.6666 MHz clock source is required with low-voltage operation. Consider the LVCMOS output compatibility with downstream digital logic families. Evaluate the need for power-down capabilities if the application demands active and idle states. Verify that the operating temperature range aligns with the environmental conditions of the intended deployment scenario.

Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequency options within the same package form factor. The series is characterized by its small size and standard performance levels suitable for consumer and industrial electronics. Mercury Electronics leverages its long history in quartz crystal manufacturing to provide reliable frequency control solutions.

Replacement Considerations

Direct replacements must match the 116.6666 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD No Lead package. Cross-reference part numbers from other manufacturers offering identical electrical parameters and pin configurations to ensure functional equivalence without redesigning the host circuit.