18QHTF21-79.705976-OE

Overview

The 18QHTF21-79.705976-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 79.705976 MHz and utilizes LVCMOS output logic. The device is powered by a 1.8V supply voltage and features an enable/disable control function. It is housed in a compact 4-SMD, No Lead package with dimensions corresponding to the SMD2016 form factor.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes hardware enable and disable control functionality
• Designed for low-voltage operation at 1.8V
• Utilizes a leadless surface-mount package for automated assembly

Applications

• Clock signal generation in embedded systems
• Timing reference for microprocessors and microcontrollers
• Data communication interfaces requiring precise clock sources
• Consumer electronics utilizing low-voltage logic families

Procurement Notes

Verify the exact frequency tolerance and load capacitance requirements against your circuit design specifications before ordering. Confirm that the 1.8V supply voltage aligns with your system power rails. Ensure the PCB footprint matches the 4-SMD No Lead package dimensions provided in the official datasheet to prevent soldering issues during assembly.

Selection Notes

Select this component when a specific frequency of 79.705976 MHz is required for LVCMOS-compatible circuits. Consider the 1.8V operating voltage constraint and the need for an enable pin. Evaluate the physical space constraints due to the small SMD2016 package size compared to larger oscillator packages available from other manufacturers.

Part Context

This part belongs to the 18QHTF21 series of standard crystal oscillators from Mercury Electronics. The series offers various frequencies while maintaining consistent electrical characteristics such as 1.8V operation and LVCMOS outputs. The suffix -OE typically denotes specific packaging or tape-and-reel configuration options within the manufacturer's product line.

Replacement Considerations

Direct substitutes must match the 79.705976 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD No Lead package. Verify equivalent performance metrics including phase noise and jitter if critical to the application.