18QHTF21-3.400-PD

Oscillators Overview

The 18QHTF21-3.400-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a fixed frequency of 3.4 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes a standby power-down function for energy efficiency. It is housed in a compact 4-SMD, No Lead package with dimensions of 3.2mm x 2.5mm. The component is designed for general-purpose clock signal generation in electronic circuits requiring precise timing references.

Oscillators Feature Summary

• LVCMOS output logic for digital interface compatibility
• Integrated standby power-down mode to reduce consumption
• Compact 4-SMD no-lead surface mount package

Oscillators Applications

• General-purpose clock signal generation
• Digital circuit timing references
• Embedded systems requiring low-power oscillators

Oscillators Procurement Notes

Verify the specific ordering suffix '-PD' corresponds to the required lead-free and RoHS-compliant status as defined by Mercury Electronics. Confirm that the 1.8V supply voltage requirement aligns with the target system's power rails before procurement. Ensure the 4-SMD no-lead footprint matches the PCB design specifications to avoid assembly issues.

Oscillators Selection Notes

Select this model when a 3.4 MHz clock source with LVCMOS outputs is required. Consider the 1.8V operating voltage constraint against available system power supplies. Evaluate the 4-SMD no-lead package size against board space limitations. Verify if the standard XO performance meets the application's jitter and stability requirements compared to TCXO or OCXO alternatives.

Oscillators Part Context

This part belongs to the 18QHTF21 series of standard crystal oscillators from Mercury Electronics. The series offers various frequencies and voltage options within a consistent small form factor. The 'PD' suffix typically indicates specific packaging or compliance attributes distinct from other variants like '-OE'. This family targets cost-sensitive applications needing reliable timing signals.

Oscillators Replacement Considerations

Direct substitutes must match the 3.4 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Verify pinout compatibility and electrical characteristics such as load capacitance and drive strength. Cross-reference with other manufacturers offering similar SMD oscillators if Mercury Electronics stock is unavailable.