18QHTF21-20.140-OE

Oscillators Overview

The 18QHTF21-20.140-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fundamental frequency of 20.14 MHz and utilizes LVCMOS output logic levels. The device is designed for operation with a supply voltage of 1.8V and includes an enable/disable control function for power management. The component 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 compatibility
• Integrated enable/disable control pin
• Low voltage 1.8V operation
• Compact 4-SMD no-lead package

Oscillators Applications

• Digital signal processing clock sources
• Microcontroller system clocks
• Communication interface timing
• Embedded system oscillators

Oscillators Procurement Notes

Verify the specific frequency suffix matches the required 20.14 MHz specification. Confirm the 1.8V supply requirement aligns with the target circuit design. Ensure the 4-SMD no-lead package footprint is compatible with the PCB layout. Check for any specific enable/disable logic level requirements in the system schematic before procurement.

Oscillators Selection Notes

Select this model when a low-voltage 1.8V oscillator with LVCMOS outputs is required. The enable/disable feature supports power-sensitive designs. Consider the 4-SMD package size for space-constrained layouts. Verify that the 20.14 MHz frequency meets the system timing needs compared to standard frequencies like 20 MHz or 25 MHz.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronic, which offers various frequency options within the same package and electrical profile. The series provides standard XO solutions with enable functionality. Other variants in this family differ primarily by their operating frequency suffix while maintaining identical package and voltage characteristics.

Oscillators Replacement Considerations

Direct substitutes must match the 1.8V LVCMOS specification and 4-SMD no-lead package. Frequency-specific replacements require exact 20.14 MHz matching. Generic 20 MHz or 25 MHz oscillators are not direct functional replacements due to frequency differences. Verify pinout compatibility if considering alternative manufacturers.