18QHTF21-21.875-OE

Oscillators Overview

The 18QHTF21-21.875-OE is a quartz crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 21.875 MHz and utilizes LVCMOS output logic. The device is designed for surface mount applications, featuring a compact 4-SMD, No Lead package configuration. It functions with a supply voltage of 1.8V and includes an Enable/Disable control pin for power management flexibility. The component is engineered to provide stable clock signals within the specified operating temperature range.

Oscillators Feature Summary

• Surface mount design with a leadless 4-SMD package for automated assembly
• LVCMOS output logic compatible with standard digital interfaces
• Integrated enable/disable functionality for dynamic power control

Oscillators Applications

• General purpose clock generation in embedded systems
• Data communication interface timing
• Consumer electronics requiring low voltage operation

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 the latest datasheet for any updates on operating temperature ranges or reliability standards relevant to your application environment.

Oscillators Selection Notes

Select this component when a low-profile, surface-mount oscillator is required for 1.8V logic systems. Consider the 4-SMD package size for space-constrained designs. Verify that LVCMOS outputs meet the drive requirements of the downstream components. Evaluate the enable/disable feature if power efficiency during idle states is a critical design parameter.

Oscillators Part Context

This part belongs to the QHTF series of quartz oscillators from Mercury Electronics. The series is characterized by its transition to surface mount technology and expanded frequency range capabilities. These oscillators are designed to replace older through-hole components while offering improved performance and smaller form factors for modern electronic devices.

Oscillators Replacement Considerations

Direct substitutes may include other 1.8V LVCMOS oscillators in a 4-SMD package from the same manufacturer. Cross-reference part numbers such as 18QHTF21 variants with different frequencies for similar electrical characteristics. Ensure compatibility regarding pinout and mechanical dimensions when considering alternative sources.