18QHTF21-10.446875-PD

Overview

The 18QHTF21-10.446875-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 10.446875 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes a standby or power-down function for energy management. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Feature Summary

• Supports low-voltage operation with integrated standby capability
• Provides stable clock signals via LVCMOS interface
• Designed for surface-mount integration in space-constrained layouts

Applications

• Digital signal processing systems requiring precise timing
• Communication equipment utilizing standard clock frequencies
• Embedded control units needing low-power oscillation modes

Procurement Notes

Verify the specific ordering suffix to ensure compatibility with required voltage levels and output types. Confirm that the 4-SMD no-lead package aligns with your PCB footprint requirements. Check manufacturer documentation for reflow soldering profiles to prevent thermal damage during assembly processes.

Selection Notes

Choose this component when a fixed 10.446875 MHz frequency is mandatory for system synchronization. Consider the 1.8V supply requirement against available board power rails. Evaluate the need for standby functionality if power conservation is critical during idle periods compared to continuous operation alternatives.

Part Context

This model belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz crystal and oscillator products. The series typically offers various frequency options within a standardized small form factor. Mercury has established expertise in frequency control manufacturing since 1973, focusing on reliable timing solutions for industrial and commercial electronics.

Replacement Considerations

Direct substitutes include other 10.446875 MHz LVCMOS oscillators in 4-SMD packages from compatible manufacturers. Ensure equivalent supply voltage and current consumption specifications are met. Verify pinout compatibility before replacing to avoid circuit redesign efforts.