18QHTF21-43.900-PD

Oscillators Overview

The 18QHTF21-43.900-PD is a standard crystal oscillator manufactured by Mercury Electronic Ind., Co., Ltd. It operates at a frequency of 43.9 MHz with an LVCMOS output logic level. The device requires a supply voltage of 1.8V and features a power-down function for standby mode control. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 mm by 1.6 mm.

Oscillators Feature Summary

• Supports low-voltage operation at 1.8V
• Includes power-down capability for energy management
• Utilizes LVCMOS output interface

Oscillators Applications

• General clock signal generation
• Embedded system timing references
• Digital circuit synchronization

Oscillators Procurement Notes

Verify the specific frequency suffix matches the required 43.9 MHz application. Confirm the 1.8V supply requirement aligns with the target circuit design. Ensure the 2.0x1.6mm SMD footprint fits the PCB layout constraints. Check for any specific handling requirements associated with the no-lead package type during assembly.

Oscillators Selection Notes

Select this component when a precise 43.9 MHz reference is needed in space-constrained designs. The 1.8V operating voltage makes it suitable for modern low-power digital systems. The integrated power-down feature allows for dynamic power management strategies. Consider the small form factor for high-density board layouts.

Oscillators Part Context

This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series offers various frequencies within a standardized 2.0x1.6mm package. These components are designed for applications requiring stable clock signals in portable and industrial electronics.

Oscillators Replacement Considerations

Direct substitutes must match the 43.9 MHz frequency, 1.8V supply, LVCMOS output, and 2.0x1.6mm package. Verify pin compatibility and electrical specifications before substitution.