18QHTF21-80.640-PD

Overview

The 18QHTF21-80.640-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 80.64 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and features a power-down function for standby mode control. It is housed in a compact 4-SMD, No Lead package designed for surface mount applications.

Feature Summary

• Supports low voltage CMOS (LVCMOS) output signaling
• Includes power-down capability for energy management
• Utilizes a leadless surface-mount package design

Applications

• General clock signal generation
• Digital system timing references
• Embedded controller synchronization

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V operating voltage aligns with your system's power rails. Ensure the 4-SMD no-lead footprint matches your PCB layout constraints to guarantee proper assembly and electrical connectivity.

Selection Notes

Select this component when a precise 80.64 MHz reference is required in space-constrained designs. The LVCMOS interface ensures compatibility with standard digital logic families. Consider the power-down feature if system-wide energy efficiency during idle states is a priority for the application architecture.

Part Context

This model belongs to the 18QHTF series of quartz crystal oscillators from Mercury Electronics. The series typically offers various frequencies within a small form factor. The 'PD' suffix indicates the inclusion of a power-down pin or function, distinguishing it from continuous-operation variants in the same product line.

Replacement Considerations

Check the 18QHTF32-80.640-PD for a larger 3.2x2.5mm package option. Verify that any substitute maintains the 1.8V supply requirement and LVCMOS output characteristics to ensure functional equivalence in the target circuit.