18QHTF21-43.900-OE

Oscillators Overview

The 18QHTF21-43.900-OE is a standard crystal oscillator manufactured by Mercury Electronic Ind., Co., Ltd. It operates at a frequency of 43.9 MHz and utilizes LVCMOS output logic. The device requires a supply voltage of 1.8V and features an enable/disable control function. It is housed in a 4-SMD package without lead. The component complies with RoHS standards and has a Moisture Sensitivity Level (MSL) rating of 1, indicating unlimited shelf life under normal conditions.

Oscillators Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes hardware enable and disable control functionality
• Complies with RoHS environmental standards

Oscillators Applications

• General clock signal generation in electronic circuits
• Digital system timing references
• Embedded controller clock sources

Oscillators Procurement Notes

Verify the specific suffix against official documentation to confirm exact electrical tolerances and pinout configurations. Ensure the selected variant matches the required operating temperature range and supply voltage specifications for the target application design.

Oscillators Selection Notes

Select this component when a low-voltage 1.8V clock source is required. Confirm that the LVCMOS output swing aligns with the input requirements of the downstream logic devices. Verify package dimensions fit the available PCB footprint constraints.

Oscillators Part Context

This part belongs to the QHTF series of surface-mount oscillators from Mercury Electronics. The series offers various frequency options within a compact form factor. The 18QHTF21-43.900-OE represents a specific frequency point within this standardized product line.

Oscillators Replacement Considerations

Consult official cross-reference lists for direct substitutes. Ensure replacement parts match the 1.8V supply, LVCMOS output, and 4-SMD package type.