18QHTF21-40.971-PD

Oscillators Overview

The 18QHTF21-40.971-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 40.971 MHz with an LVCMOS output logic level. The device requires a 1.8V supply voltage and features a Standby (Power Down) control function. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0 x 1.6 mm.

Oscillators Feature Summary

• Supports standby mode for power management
• Compact surface-mount form factor

Oscillators Applications

• Digital signal processing systems
• Communication equipment clocking
• Embedded system timing references

Oscillators Procurement Notes

Verify the specific frequency suffix matches the required 40.971 MHz specification. Confirm the 1.8V supply requirement aligns with the target circuit design. Ensure the 4-SMD no-lead package type is compatible with the PCB footprint. Check for any specific handling requirements associated with the component.

Oscillators Selection Notes

Select this component when a precise 40.971 MHz reference is needed in low-voltage applications. The LVCMOS interface ensures compatibility with standard digital logic families. The small 2.0x1.6mm package is suitable for space-constrained designs requiring reliable timing signals.

Oscillators Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series offers various frequencies with consistent electrical characteristics. The PD suffix indicates the inclusion of a power-down feature for energy efficiency.

Oscillators Replacement Considerations

Direct substitutes must match the 40.971 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility and thermal performance before substitution.