18QHTF21-83.6545-PD

Overview

The 18QHTF21-83.6545-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 83.6545 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a power-down (standby) control function. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm.

Feature Summary

• LVCMOS output interface
• Power-down standby capability
• Compact surface-mount form factor

Applications

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

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design. Confirm that the 1.8V supply voltage aligns with the system's power rails. Ensure the 4-SMD no-lead package footprint matches the PCB layout specifications to guarantee proper soldering and mechanical stability during assembly.

Selection Notes

Select this component when a low-voltage, small-footprint oscillator is required for digital timing applications. The LVCMOS output is suitable for direct interfacing with standard logic families. Consider the power-down feature if energy efficiency during idle states is a priority for the end product design.

Part Context

This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series offers various frequencies and voltages, typically utilizing quartz crystal technology for stable frequency generation. The 'PD' suffix indicates the inclusion of a power-down control pin for standby management.

Replacement Considerations

Direct substitutes must match the 83.6545 MHz frequency, 1.8V supply, LVCMOS output, and 2.0x1.6mm package size. Verify pinout compatibility and electrical characteristics before swapping manufacturers.