18QHTF21-82.500-PD

Overview

The 18QHTF21-82.500-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 82.5 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a Standby (Power Down) control function. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm.

Feature Summary

• Supports Low Voltage CMOS (LVCMOS) output logic levels
• Includes Standby mode functionality for power management
• Utilizes a surface-mount 4-pin no-lead package design

Applications

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

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the PCB footprint matches the 2.0x1.6mm SMD package dimensions to guarantee proper soldering and mechanical stability during assembly processes.

Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside a standard LVCMOS interface. The integrated standby feature makes it suitable for applications requiring power conservation during idle states. Consider the small form factor for space-constrained designs where a 4-pin SMD package is preferred over larger through-hole or larger surface-mount alternatives.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz timing components. The series includes various frequencies and output types, such as OE (Enable/Disable) variants. The PD suffix specifically denotes the Power Down capability, distinguishing it from continuous-operation models within the same physical package family.

Replacement Considerations

Direct substitutes include other 82.5 MHz LVCMOS oscillators in 2.0x1.6mm packages with 1.8V operation and standby functions. Verify pin compatibility and electrical specifications before swapping manufacturers.