18QHTF21-71.428571-PD

Overview

The 18QHTF21-71.428571-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 71.428571 MHz with LVCMOS output logic. The device requires a 1.8V supply voltage and features a Standby (Power Down) control function. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm.

Feature Summary

• Supports standby mode for power management
• Compact surface-mount form factor

Applications

• Digital signal processing systems
• Communication equipment clocking
• Embedded system timing references

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 PCB footprint matches the 2.0x1.6mm SMD package dimensions to guarantee proper mechanical fit and electrical connectivity during assembly.

Selection Notes

Select this component when a precise 71.428571 MHz reference is required with low-power standby capabilities. Consider the LVCMOS output compatibility with downstream logic levels. Evaluate the thermal performance within the specified operating temperature range to ensure long-term stability in the target application environment.

Part Context

This part 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 quartz industry. This series typically offers standard oscillators designed for cost-effective integration into various electronic circuits requiring stable clock signals.

Replacement Considerations

Direct substitutes must match the 71.428571 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility and electrical characteristics such as phase noise and jitter if critical to the application.