18QHTF21-12.270-OE

Overview

The 18QHTF21-12.270-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fundamental frequency of 12.27 MHz and utilizes LVCMOS output logic levels. The device is designed for low-power applications, featuring a supply voltage range of 1.8V. It includes an enable/disable control function to manage power consumption during inactive periods. The component is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly on printed circuit boards.

Feature Summary

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

Applications

• Portable electronic devices requiring low power consumption
• Digital signal processing clock sources
• Microcontroller 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 4-SMD footprint matches your PCB layout constraints. Check for any RoHS compliance documentation if required by your manufacturing standards.

Selection Notes

Select this oscillator when a precise 12.27 MHz reference is needed with minimal power draw. The LVCMOS output ensures direct interfacing with standard logic families without additional buffering. Consider the enable feature if system-wide power savings are critical. Verify operating temperature ranges meet environmental conditions.

Part Context

This part belongs to the 18QHTF series of quartz crystal oscillators from Mercury Electronics. The series offers various frequencies within the standard XO category. These components are designed for general-purpose timing applications where stability and low cost are prioritized over high-performance specifications found in TCXOs or OCXOs.

Replacement Considerations

Direct substitutes must match the 12.27 MHz frequency, LVCMOS output, 1.8V supply, and 4-SMD package. Verify pinout compatibility and electrical parameters such as phase noise and jitter if specified in the original design.