18QHTF21-12.0305-OE

Overview

The 18QHTF21-12.0305-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 12.0305 MHz and utilizes LVCMOS output logic levels. The device supports an enable/disable function controlled via a 1.8V supply voltage, allowing for power management in low-voltage applications. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.00mm x 1.60mm. This component is designed for precise timing and clock signal generation within electronic circuits requiring stable frequency references.

Feature Summary

• Generates a stable 12.0305 MHz clock signal using LVCMOS output interface
• Features integrated enable/disable functionality for power control
• Operates on a single 1.8V supply voltage rail
• Utilizes a small form factor 4-SMD No Lead surface mount package

Applications

• Timing and clock signal generation in embedded systems
• Synchronization circuits in consumer electronics
• Clock reference sources for microcontrollers and digital logic

Procurement Notes

Verify the specific ordering suffix to ensure compatibility with required frequency tolerance and load capacitance specifications. Confirm that the 1.8V operating voltage aligns with the target system's power domain. Ensure the 4-SMD No Lead footprint matches the PCB layout design. Cross-reference the manufacturer datasheet for detailed electrical characteristics and recommended soldering profiles before integration into production designs.

Selection Notes

Select this component when a precise 12.0305 MHz frequency is required for LVCMOS-compatible digital interfaces. The choice is appropriate for space-constrained designs due to the 2.0x1.6mm package size. Consider the 1.8V supply requirement and enable pin functionality for power-sensitive applications. Evaluate thermal performance and stability requirements against the standard oscillator specifications provided in the official documentation.

Part Context

This part belongs to the 18QHTF21 series of quartz crystal oscillators produced by Mercury Electronics. The series offers various frequencies and packaging options for different timing needs. As a standard XO, it provides reliable frequency stability for general-purpose timing applications. The manufacturer specializes in frequency control products, ensuring consistent quality across their oscillator lineup for industrial and commercial use cases.

Replacement Considerations

Direct substitutes must match the 12.0305 MHz frequency, LVCMOS output, 1.8V supply, and 4-SMD No Lead package dimensions. Verify equivalent electrical parameters such as load capacitance and frequency tolerance from competitor datasheets. Ensure pinout compatibility if alternative packages are considered. Consult official replacement lists or cross-reference guides for validated equivalents.