18QHTF21-74.170-PD

Overview

The 18QHTF21-74.170-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd, operating at a frequency of 74.17 MHz. It utilizes LVCMOS output logic and functions with a supply voltage of 1.8V. The device features a standby or power-down mode for energy management. It is housed in a compact 4-SMD, no-lead package with dimensions of 2.0x1.6 mm.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes standby or power-down functionality to reduce consumption
• Utilizes a surface-mount 4-SMD no-lead package design

Applications

• General clock signal generation in electronic circuits
• Digital systems requiring precise timing references
• Embedded devices utilizing low-voltage logic interfaces

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's power rails. Ensure the PCB footprint matches the 2.0x1.6 mm SMD package dimensions to guarantee proper soldering and mechanical stability during assembly processes.

Selection Notes

Select this component when a 74.17 MHz clock source is required with LVCMOS compatibility. Consider the 1.8V operating voltage constraint for power budget alignment. Evaluate the need for power-down capabilities if energy efficiency is critical. Compare package size constraints against available board space to ensure the 4-SMD form factor fits the layout requirements.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies within a standardized 2.0x1.6 mm package. The series typically supports LVCMOS outputs and low-voltage operation. The '-PD' suffix indicates the inclusion of power-down functionality, distinguishing it from standard continuous-operation variants within the same physical footprint family.

Replacement Considerations

Direct substitutes include other 18QHTF21 series parts with identical 74.17 MHz frequency and 1.8V LVCMOS specifications. Verify pinout compatibility and package dimensions (2.0x1.6 mm) when considering alternative manufacturers. Ensure equivalent electrical characteristics such as phase noise and duty cycle are met for seamless integration.