18QHTF21-41.780-PD

Oscillators Overview

The 18QHTF21-41.780-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 41.78 MHz and utilizes LVCMOS output logic levels. The device is designed for a supply voltage of 1.8V and features a standby or power-down function to manage energy consumption during inactive periods. It is housed in a compact 4-SMD, no lead package with dimensions of 2.0x1.6 mm, suitable for surface-mount applications requiring precise timing signals.

Oscillators Feature Summary

• LVCMOS output interface for digital circuit compatibility
• Integrated standby mode for power management
• Compact 4-SMD no-lead surface mount package

Oscillators Applications

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

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD footprint matches your PCB layout constraints. Check for any specific packaging options if bulk quantities are required. Validate the operating temperature range meets your environmental specifications.

Oscillators Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside a precise 41.78 MHz reference. Consider the small 2.0x1.6 mm footprint for space-constrained designs. The LVCMOS output simplifies interfacing with standard digital logic families. Evaluate the need for power-down functionality to optimize system efficiency. Compare alternative frequencies if the exact 41.78 MHz is not strictly necessary.

Oscillators Part Context

This part belongs to the Mercury Electronics 18QHTF21 series of surface-mount crystal oscillators. The series offers various frequencies within a standardized 4-SMD package. These components are designed for general-purpose timing applications where size and power consumption are critical factors. The 'PD' suffix indicates the inclusion of a power-down control feature.

Oscillators Replacement Considerations

Direct substitutes must match the 41.78 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility and electrical characteristics such as phase noise and jitter. Cross-reference with other manufacturers offering similar SMD oscillators if Mercury Electronics parts are unavailable.