18QHTF21-78.750-PD

Overview

The 18QHTF21-78.750-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 78.75 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and features a standby power-down function for energy management. It is housed in a compact 4-SMD, no-lead package designed for surface-mount applications.

Feature Summary

• Supports low-voltage operation at 1.8V
• Includes standby power-down capability
• Utilizes LVCMOS output interface

Applications

• General electronic timing circuits
• Digital signal processing systems
• Communication equipment modules

Procurement Notes

Verify the specific suffix PD indicates the power-down feature against official datasheets. Confirm the 1.8V supply requirement matches system design constraints. Ensure the 4-SMD no-lead package footprint aligns with PCB layout specifications before ordering.

Selection Notes

Select this component when a 78.75 MHz clock source is required with low power consumption capabilities. The LVCMOS output ensures compatibility with standard digital logic families. Consider the thermal performance and operating temperature range relative to the intended application environment.

Part Context

This model belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz crystal frequency control products. The manufacturer has decades of experience in Taiwan's crystal industry, providing reliable oscillators for various industrial and commercial electronics applications.

Replacement Considerations

Check for direct substitutes within the same series such as 18QHTF21 variants with different frequencies or supply voltages. Verify pinout compatibility and electrical characteristics before substituting with other manufacturers' components.