18QHTF21-12.582912-OE

Overview

The 18QHTF21-12.582912-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 12.582912 MHz and utilizes LVCMOS output logic. The device is designed for low-voltage applications, requiring a supply voltage of 1.8V. It features an enable/disable control function to manage power consumption. The component is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. It is suitable for environments requiring precise timing signals within standard operating temperature ranges.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes enable/disable functionality for power management
• Utilizes a compact 4-SMD no-lead surface mount package

Applications

• Digital signal processing circuits requiring precise clocking
• Embedded systems utilizing low-voltage microcontrollers
• Communication modules needing stable frequency references

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design 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. Check for any specific reflow soldering profile recommendations provided in the official datasheet to ensure reliable assembly and long-term performance.

Selection Notes

Select this component when a fixed 12.582912 MHz clock source is required for LVCMOS-compatible digital logic. Consider the 1.8V operating voltage constraint to ensure compatibility with low-power processors. The small form factor makes it suitable for space-constrained designs. Evaluate the need for the enable/disable pin if dynamic power saving is a priority in the application architecture.

Part Context

This part belongs to the 18QHTF21 series of standard crystal oscillators from Mercury Electronics. The series offers various frequencies while maintaining consistent package dimensions and electrical characteristics. These oscillators are designed for general-purpose timing applications in consumer electronics and industrial equipment, providing a balance between cost, size, and performance stability.

Replacement Considerations

Direct substitutes must match the 12.582912 MHz frequency, LVCMOS output, 1.8V supply, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility and thermal characteristics. Cross-reference with other manufacturers' equivalent parts ensuring identical electrical specifications and mechanical footprint to avoid redesign efforts.