18QHTF21-79.6364-PD

Overview

The 18QHTF21-79.6364-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 79.6364 MHz and utilizes LVCMOS output logic. The device requires a supply voltage of 1.8V and features a standby (power down) function for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. This component is designed for applications requiring precise timing signals within low-voltage digital systems.

Feature Summary

• Supports LVCMOS output logic for direct interface with digital circuits
• Includes standby mode capability to reduce power consumption during idle periods
• Utilizes a lead-free surface-mount package for automated assembly compatibility

Applications

• General purpose clock generation for embedded systems
• Timing reference for data communication interfaces
• Clock source for microcontrollers and DSPs

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure that the 1.8V supply rail is stable and within the specified operating range to maintain frequency accuracy. Confirm that the PCB footprint matches the 2.0x1.6mm SMD package dimensions to avoid assembly issues. Check for any specific handling instructions regarding electrostatic discharge protection during storage and installation.

Selection Notes

Select this component when a 79.6364 MHz clock signal is required with low voltage operation. Consider the LVCMOS output level compatibility with downstream logic families. Evaluate the need for power-down functionality if system power efficiency is a priority. Compare package size constraints against available board space. Verify that the operating temperature range meets the environmental conditions of the intended application.

Part Context

This part belongs to the QHTF series of crystal oscillators from Mercury Electronics. The series offers various frequencies and voltage options in small form factors. The 'PD' suffix indicates the inclusion of a power-down feature. Mercury Electronics specializes in frequency control products including crystals and oscillators. This model represents a standard XO solution for compact electronic designs.

Replacement Considerations

Direct substitutes must match the 79.6364 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Verify pinout compatibility and electrical characteristics such as phase noise and jitter. Consult manufacturer cross-reference lists for equivalent parts from other suppliers.