18QHTF21-64.512-OE

Overview

The 18QHTF21-64.512-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 64.512 MHz and utilizes LVCMOS output logic levels. The device is designed for surface mount applications, featuring a compact 4-SMD, No Lead package configuration. It functions with a supply voltage of 1.8V and includes an Enable/Disable control pin for power management flexibility. This component serves as a precise clock source for digital circuits requiring stable timing signals within the specified operating conditions.

Feature Summary

• Provides stable 64.512 MHz clock signal generation using LVCMOS output interface
• Features integrated enable/disable functionality for efficient power management
• Designed for space-constrained applications with a compact 4-SMD no lead package

Applications

• Digital system clock generation
• Communication equipment timing sources
• Embedded processor clock inputs

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the PCB footprint matches the 4-SMD no lead package dimensions provided in the official datasheet. Check for any specific reflow soldering profile recommendations to maintain component integrity during assembly processes.

Selection Notes

Select this oscillator when a precise 64.512 MHz frequency is required for synchronous digital systems. Consider the LVCMOS output compatibility with your receiving logic family. Evaluate the 1.8V supply constraint against available power resources. The enable/disable feature offers advantages in battery-powered or power-sensitive designs where dynamic clock gating is necessary to reduce overall system consumption.

Part Context

This component belongs to the 18QHTF21 series of surface mount crystal oscillators from Mercury Electronics. The series typically offers various frequencies and voltage options within a standardized small outline package. These devices are engineered for high reliability and stability in consumer electronics and industrial applications. The OE suffix indicates a specific variant with enable control capabilities, distinguishing it from standard continuous-output models in the same form factor.

Replacement Considerations

Direct substitutes must match the 64.512 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify equivalent electrical parameters such as phase noise and jitter specifications. Ensure the replacement part supports the same enable/disable control logic. Cross-reference pinouts to guarantee compatibility without circuit modifications.