18QHTF21-81.100-PD

Overview

The 18QHTF21-81.100-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 81.1 MHz and utilizes LVCMOS output logic. The device requires a 1.8V supply voltage and features a power-down function for standby mode control. 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 timing applications requiring precise frequency generation within low-voltage systems.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes power-down functionality to reduce current consumption during standby
• Utilizes a small form factor SMD package suitable for space-constrained designs

Applications

• Battery-powered portable electronic devices
• Digital communication equipment requiring stable clock signals
• Embedded systems utilizing low-voltage microcontrollers

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your system design before procurement. Confirm that the 1.8V supply voltage aligns with your power rail specifications. Ensure the 4-SMD no-lead package footprint matches your PCB layout constraints. Check for any specific handling instructions regarding electrostatic discharge protection during assembly.

Selection Notes

Select this component when a precise 81.1 MHz clock signal is required in a low-power environment. The LVCMOS output ensures compatibility with standard digital logic families. Consider the power-down feature if energy efficiency is critical for battery-operated applications. Verify that the operating temperature range meets your environmental conditions.

Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronic Ind. Co., Ltd, which specializes in quartz crystals and oscillators. The series offers various frequencies and supply voltages, catering to diverse timing needs. The 'PD' suffix indicates the inclusion of a power-down pin, allowing for active management of power consumption.

Replacement Considerations

Direct substitutes include other 81.1 MHz LVCMOS oscillators in similar packages from compatible manufacturers. Ensure replacement parts match the 1.8V supply requirement and support power-down functionality. Verify dimensional compatibility with the 2.0 x 1.6 mm footprint to maintain PCB integrity.