18QHTF21-4.112-OE

Oscillators Overview

The 18QHTF21-4.112-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 4.112 MHz and utilizes LVCMOS output logic levels. 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, suitable for surface-mount assembly. It supports an operating temperature range from -40°C to 85°C and maintains a frequency stability of ±50ppm.

Oscillators Feature Summary

• Integrates LVCMOS output logic for direct digital interface compatibility
• Includes hardware enable/disable control for power management optimization
• Designed for low-voltage operation at 1.8V supply
• Constructed in a leadless SMD package for automated surface-mount processing

Oscillators Applications

• Embedded systems requiring precise clock timing
• Consumer electronics with low-power constraints
• Industrial control modules operating in extended temperatures
• Communication devices utilizing standard logic interfaces

Oscillators Procurement Notes

Verify the specific frequency suffix matches the required 4.112 MHz specification. Confirm that the 1.8V supply voltage aligns with the target system design. Ensure the 4-SMD no-lead package footprint is compatible with the PCB layout. Check that the ±50ppm stability meets the application's timing requirements. Validate the enable/disable pin configuration against the control circuitry.

Oscillators Selection Notes

Select this component when a low-voltage 1.8V oscillator is required for space-constrained designs. Consider the LVCMOS output for straightforward integration with standard logic families. Evaluate the ±50ppm stability against the system's jitter tolerance. The enable/disable feature makes it suitable for battery-powered or power-sensitive applications. Verify thermal performance within the -40°C to 85°C range for the intended environment.

Oscillators Part Context

This part belongs to the Mercury Electronics 18QHTF21 series of standard crystal oscillators. The series offers various frequencies and voltage options in a consistent small form factor. Mercury Electronic specializes in quartz-based frequency control products, including crystals, TCXOs, and OCXOs. This specific model represents a standard XO variant optimized for general-purpose timing applications.

Oscillators Replacement Considerations

Direct substitutes include other 18QHTF21 series variants with identical electrical characteristics but different frequencies, such as 18QHTF21-4.032-OE or 18QHTF21-6.300-OE, provided the frequency difference is acceptable. Cross-brand replacements must match the 1.8V supply, LVCMOS output, 4-SMD no-lead package, and ±50ppm stability.