18QHTF21-71.11173-OE

Overview

The 18QHTF21-71.11173-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 71.11173 MHz and utilizes LVCMOS output logic. The device is designed for operation with a supply voltage of 1.8V and features an enable/disable control function. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Feature Summary

• LVCMOS output logic for digital interface compatibility
• Integrated enable/disable control functionality
• Compact 4-SMD no-lead surface mount package

Applications

• Timing and clock signal generation in electronic devices
• Data communication systems requiring precise frequency references
• Embedded systems utilizing low-voltage digital interfaces

Procurement Notes

Verify the specific frequency tolerance and operating temperature range requirements against the official datasheet before procurement. Confirm that the 1.8V supply voltage aligns with the target system design. Ensure the 4-SMD package footprint matches the PCB layout constraints. Check for any specific ordering suffixes that may affect performance characteristics or packaging options.

Selection Notes

Select this component when a stable 71.11173 MHz reference is required for LVCMOS-compatible circuits. Consider the 1.8V supply constraint and the need for an enable pin to manage power consumption. Evaluate the thermal performance within the specified operating temperature range. Compare size constraints against alternative packages if space is limited.

Part Context

This part belongs to the 18QHTF21 series of standard crystal oscillators from Mercury Electronics. The series typically offers various frequencies and supply voltages. These oscillators are designed for general-purpose timing applications where low cost and small form factor are prioritized over high stability or extreme environmental resilience.

Replacement Considerations

Direct substitutes must match the 71.11173 MHz frequency, LVCMOS output, 1.8V supply, and 4-SMD package. Verify pinout compatibility and electrical specifications such as load capacitance and drive strength. Cross-reference with other manufacturers offering similar XO components.