18QHTF21-42.954-OE

Oscillators Overview

The 18QHTF21-42.954-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 42.954 MHz and utilizes LVCMOS output logic. The device is designed for low-voltage applications with 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 supports an operating temperature range of -40°C to +85°C and offers frequency stability of ±50ppm.

Oscillators Feature Summary

• Compact 4-SMD No Lead surface-mount package suitable for space-constrained designs
• LVCMOS output logic compatible with standard digital interfaces
• Integrated enable/disable functionality for power management optimization
• Wide industrial operating temperature range ensuring reliability in varied environments

Oscillators Applications

• Portable electronic devices requiring low-power clock sources
• Industrial control systems operating in wide temperature ranges
• Communication equipment utilizing LVCMOS signal standards
• Embedded systems needing precise timing references

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure the 1.8V supply voltage aligns with your system's power rails. Confirm that the enable/disable pin configuration matches your control logic. Check for any specific handling instructions related to the small form factor package during assembly.

Oscillators Selection Notes

Select this component when a low-profile, low-voltage oscillator with enable control is required. Consider the ±50ppm stability for applications not demanding ultra-high precision. Evaluate the 42.954 MHz frequency against available alternatives if exact matching is not critical. Ensure compatibility with LVCMOS input thresholds of downstream components.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which focuses on miniature crystal oscillators. The series typically includes various frequencies and voltage options. The '-OE' suffix likely denotes specific packaging or testing configurations. Mercury Electronics specializes in quartz crystals and frequency control products, leveraging decades of manufacturing experience.

Oscillators Replacement Considerations

Direct replacements may include other 18QHTF21 series variants with different frequencies but identical pinouts and electrical characteristics. Cross-reference with similar 2.0x1.6mm LVCMOS oscillators from other manufacturers if availability is an issue. Verify that substitute parts meet the same temperature and stability specifications.