18QHTF21-70.044-OE

Overview

The 18QHTF21-70.044-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 70.044 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes enable/disable control capabilities. It is housed in a compact 4-SMD, No Lead package, designed for surface-mount applications requiring precise timing signals.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Integrates enable and disable functionality for power management
• Utilizes a leadless SMD package for automated assembly

Applications

• General clock signal generation in electronic circuits
• Timing reference for digital systems
• Embedded system synchronization

Procurement Notes

Verify the specific frequency tolerance and operating temperature range against the official datasheet before procurement. Confirm that the 1.8V supply voltage aligns with the target circuit design. Ensure the 4-SMD no-lead package dimensions fit the PCB footprint requirements. Check for any specific handling instructions regarding electrostatic discharge sensitivity during storage and installation.

Selection Notes

Select this component when a 70.044 MHz clock source is required with low-voltage operation. Consider the LVCMOS output level for direct interfacing with compatible logic families. Evaluate the enable/disable feature if dynamic power saving is necessary. Compare package size constraints against available board space. Verify environmental specifications match the intended operational conditions.

Part Context

This part belongs to the 18QHTF21 series of standard oscillators from Mercury Electronics. The series offers various frequencies with consistent packaging and electrical characteristics. Similar models include variants like 18QHTF21-44.000-OE and 18QHTF21-44.200-OE, differing primarily in output frequency while maintaining identical form factors and logic types.

Replacement Considerations

Direct substitutes within the same series include 18QHTF21-70.000-OE or other Mercury oscillators with matching 70 MHz frequencies. Cross-brand replacements require verification of pinout compatibility, voltage levels, and output drive strength. Ensure any alternative maintains the LVCMOS logic family and 4-SMD no-lead package type.