18QHTF21-81.360-OE

Overview

The 18QHTF21-81.360-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 81.36 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes an enable/disable control feature. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm.

Feature Summary

• Integrates LVCMOS output logic for digital signal compatibility
• Features active enable and disable control functionality
• Utilizes a leadless surface-mount package design

Applications

• General clock generation in embedded systems
• Timing reference for digital communication interfaces
• Clock source for microcontroller units

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 4-SMD no-lead footprint matches the PCB land pattern to guarantee proper soldering and mechanical stability during assembly processes.

Selection Notes

Select this component when a precise 81.36 MHz timing reference is required for low-voltage digital circuits. The LVCMOS interface suits applications needing direct connection to logic inputs without additional buffering. Consider the small form factor for space-constrained designs requiring reliable clock signals in portable or dense electronic assemblies.

Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which focuses on standard frequency control solutions. The series offers various frequencies within a consistent 2.0x1.6mm package. This specific model provides the 81.36 MHz variant, maintaining the series' characteristics of low power consumption and stable operation across industrial temperature ranges.

Replacement Considerations

Direct substitutes must match the 81.36 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Verify pinout compatibility and thermal specifications. Cross-reference with other manufacturers offering identical electrical parameters and physical dimensions to ensure interchangeability without redesign.