18QHTF21-50.050-PD

Overview

The 18QHTF21-50.050-PD is a 50.05 MHz crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It utilizes an LVCMOS output logic and operates at a supply voltage of 1.8V. The device features a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. Key electrical specifications include a maximum supply current of 24 mA and a frequency stability of ±50 ppm. The component supports a standby power-down mode for energy efficiency.

Feature Summary

• Compact 4-SMD surface-mount package design
• LVCMOS output signal compatibility
• Integrated standby power-down functionality
• Low supply current consumption

Applications

• General clock generation in embedded systems
• Digital signal processing circuits
• Communication interface timing sources

Procurement Notes

Verify the exact frequency tolerance and load capacitance requirements against the system design specifications before procurement. Ensure that the 1.8V supply voltage aligns with the target circuit's power rails. Confirm that the 4-SMD package footprint matches the PCB layout constraints to avoid assembly issues during manufacturing.

Selection Notes

Select this component when a low-profile, low-power oscillator is required for high-frequency applications. The LVCMOS output ensures direct interfacing with standard digital logic without additional buffering. Consider the ±50 ppm stability limit for timing-sensitive designs where tighter tolerances might necessitate alternative series or higher-grade parts.

Part Context

This part belongs to the Mercury Electronics XO series, characterized by small form factors and low power consumption. The 'PD' suffix typically indicates the inclusion of a power-down control feature, allowing the oscillator to be disabled to reduce current draw during idle periods, which is beneficial for battery-operated devices.

Replacement Considerations

Direct replacements must match the 50.05 MHz frequency, 1.8V supply, and 4-SMD 2.0x1.6mm package. Verify that substitute components support LVCMOS outputs and offer comparable ±50 ppm stability. Ensure any alternative part includes similar standby functionality if power management is a critical design constraint.