18QHTF21-71.428571-OE

Overview

The 18QHTF21-71.428571-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronic Ind. Co. Ltd. It operates at a fixed frequency of 71.428571 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features an Enable/Disable control function. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. This component provides precise clock signals for digital circuits requiring stable timing references.

Feature Summary

• Generates a stable 71.428571 MHz clock signal using LVCMOS output logic
• Operates on a single 1.8V power supply with integrated enable/disable functionality
• Utilizes a miniature 4-SMD no-lead surface mount package for space-constrained designs

Applications

• Digital signal processing systems requiring precise timing
• Communication equipment utilizing standard clock frequencies
• Embedded systems needing low-voltage clock sources

Procurement Notes

Verify the specific suffix 'OE' against the manufacturer's current catalog to ensure availability and correct pinout configuration. Confirm that the 1.8V supply requirement aligns with the target system's power rails. Check for any recent revisions to the datasheet regarding operating temperature ranges or load capacitance specifications before finalizing the design.

Selection Notes

Select this component when a fixed 71.428571 MHz frequency is required with LVCMOS compatibility. Ensure the application supports the 1.8V operating voltage and can accommodate the small 2.0x1.6mm footprint. Consider the enable/disable feature if power management during idle states is necessary for the system architecture.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronic Ind. Co. Ltd, which specializes in quartz crystal frequency control products. The series offers various standard frequencies in a consistent small form factor. Mercury Electronics has been a pioneer in the Taiwan quartz industry since 1973, providing reliable timing solutions for global electronics manufacturing.

Replacement Considerations

Direct substitutes include other 18QHTF21 variants with different frequencies but identical packages and electrical characteristics, such as 18QHTF21-50.256-OE or 18QHTF21-1.088-OE, provided the frequency difference is acceptable for the circuit design.