18QHTF21-4.190-OE

Oscillators Overview

The 18QHTF21-4.190-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 4.19 MHz and utilizes LVCMOS output logic levels. The device supports a supply voltage of 1.8V and includes an enable/disable control function for power management. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Oscillators Feature Summary

• LVCMOS output interface for digital signal compatibility
• Integrated enable/disable control functionality
• Compact 4-SMD no-lead surface mount package

Oscillators Applications

• General purpose clock generation in embedded systems
• Timing reference for low-power digital circuits
• Consumer electronics requiring stable frequency sources

Oscillators 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 4-SMD package footprint matches your PCB layout constraints. Check for any specific environmental ratings if operating in extreme conditions.

Oscillators Selection Notes

Select this component when a low-voltage, small-footprint oscillator is required for 4.19 MHz applications. Consider the LVCMOS output swing limits to ensure compatibility with downstream logic inputs. Evaluate the enable pin utility for power-sensitive designs where standby modes are necessary.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which focuses on quartz-based timing solutions. The manufacturer specializes in frequency control products including crystals, oscillators, and filters. This series represents their standard XO offerings designed for general electronic applications.

Oscillators Replacement Considerations

Direct substitutes must match the 4.19 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify electrical parameters such as phase noise and jitter specifications to ensure functional equivalence in timing-critical circuits.