18QHTF21-71.4875-PD

Overview

The 18QHTF21-71.4875-PD is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co., Ltd. It operates at a frequency of 71.4875 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes a standby or power-down capability. It is housed in a compact 4-SMD, No Lead package suitable for surface-mount applications.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes standby mode functionality for power management
• Designed as a standard XO (Crystal Oscillator) unit

Applications

• General-purpose clock signal generation
• Digital circuit timing references
• Embedded system clock sources

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your design specifications before ordering. 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 connection.

Selection Notes

Select this component when a precise 71.4875 MHz clock source is required with low-voltage operation. Consider the LVCMOS output level for direct interfacing with compatible digital logic families. Evaluate the need for standby functionality if power efficiency during idle states is a critical design parameter for the target application.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronic Ind. Co., Ltd, which specializes in quartz crystal frequency control products. The manufacturer has a long history in Taiwan producing such components. This specific model represents a standard oscillator variant within their portfolio, distinct from spread-spectrum or low-EMI variants.

Replacement Considerations

Direct substitutes must match the 71.4875 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify pinout compatibility and thermal characteristics. Cross-reference with other manufacturers offering identical electrical parameters and mechanical dimensions to ensure functional interchangeability.