18QHTF21-64.1698-PD

Overview

The 18QHTF21-64.1698-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 64.1698 MHz and utilizes LVCMOS output logic levels. The device functions with a supply voltage of 1.8V and includes a standby or power-down feature for energy management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6mm.

Feature Summary

• Supports low-voltage operation at 1.8V
• Includes standby and power-down functionality
• Utilizes LVCMOS output logic

Applications

• General clock signal generation
• Digital circuit timing reference
• Embedded system clock sources

Procurement Notes

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

Selection Notes

Select this component when a precise 64.1698 MHz clock source is required for LVCMOS-compatible digital circuits. Consider the 1.8V operating voltage and the availability of a power-down mode for applications requiring active standby states. Evaluate the small 2.0x1.6mm package size against available board space limitations.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz crystal and oscillator products. The manufacturer has decades of experience in frequency control components. This specific model represents a standard XO variant designed for surface-mount integration in modern electronic assemblies.

Replacement Considerations

Direct substitutes must match the 64.1698 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify pinout compatibility and thermal characteristics before swapping manufacturers.