18QHTF21-20.3964-OE

Oscillators Overview

The 18QHTF21-20.3964-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 20.3964 MHz and utilizes LVCMOS output logic levels. The device supports a supply voltage of 1.8V and includes enable/disable functionality for power management. It is housed in a compact 4-SMD, no lead package with dimensions of 2.0x1.6mm. This component is designed for applications requiring precise timing signals in low-voltage digital circuits.

Oscillators Feature Summary

• LVCMOS output interface for digital compatibility
• Integrated enable/disable control pin
• Compact 4-SMD surface mount package

Oscillators Applications

• Digital signal processing systems
• Communication equipment timing references
• Embedded microcontroller clock sources

Oscillators Procurement Notes

Verify the specific ordering suffix to ensure correct packaging and tolerance specifications. Confirm that the 1.8V supply requirement aligns with the target system design. Check for RoHS compliance status if environmental regulations apply. Ensure the 4-SMD footprint matches the PCB layout constraints. Validate the enable/disable pin configuration against the host controller capabilities.

Oscillators Selection Notes

Select this oscillator when a 20.3964 MHz reference is required in space-constrained designs. The 1.8V operation makes it suitable for modern low-power portable devices. Consider the LVCMOS output swing for direct interfacing with compatible logic families. The enable feature allows for dynamic power saving during idle periods. Evaluate thermal performance within the small SMD form factor.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz crystal frequency control products. The manufacturer has decades of experience in Taiwan's crystal industry. The series typically offers standard oscillators with various frequency options and voltage levels. The 18QHTF21 designation indicates a specific package size and pin configuration common in their product line.

Oscillators Replacement Considerations

Direct substitutes may include other 20.3964 MHz LVCMOS oscillators in 2.0x1.6mm packages. Verify electrical parameters such as load capacitance and drive level before substitution. Ensure the replacement supports the same enable/disable functionality if required. Check for equivalent frequency stability and phase noise specifications.