18QHTF21-10.425-PD

Overview

The 18QHTF21-10.425-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 10.425 MHz and utilizes LVCMOS output logic levels. The device is designed for a supply voltage of 1.8V and includes a standby or power-down function to manage energy consumption during inactive periods. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly on printed circuit boards.

Feature Summary

• Integrates LVCMOS output logic for digital signal compatibility
• Supports standby mode for power reduction
• Utilizes a leadless SMD package for space-efficient mounting

Applications

• Digital communication systems requiring precise clock signals
• Portable electronic devices with battery power constraints
• Embedded control circuits utilizing low-voltage logic

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to ensure correct pinout and electrical specifications. Confirm that the 1.8V supply requirement aligns with the target system design. Check for any recent revisions to the datasheet regarding thermal characteristics or recommended soldering profiles for the leadless package type.

Selection Notes

Select this component when a 10.425 MHz reference clock is required within a 1.8V logic environment. Ensure the application can accommodate the standby feature if power management is critical. Verify that the 4-SMD footprint matches the available board space and that the LVCMOS output swing is compatible with the receiving input thresholds of the connected integrated circuits.

Part Context

This model belongs to the QHTF series of surface-mount oscillators from Mercury Electronics. The series typically offers various frequencies and voltage options. The '18' prefix generally indicates the 1.8V operating voltage variant, while the 'PD' suffix denotes the specific package or termination style associated with this product line.

Replacement Considerations

Direct substitutes must match the 10.425 MHz frequency, 1.8V supply, and LVCMOS output. Verify pin-to-pin compatibility for the 4-SMD no-lead form factor. Consult official cross-reference lists for approved alternatives with identical electrical parameters.