18QHTF21-115.440-PD

Overview

The 18QHTF21-115.440-PD is a crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 115.44 MHz with an LVCMOS output signal type. The device requires a supply voltage of 1.8V and features a standby function for power down control. It is housed in a compact 4-SMD, No Lead package.

Feature Summary

• LVCMOS output interface
• Standby (Power Down) capability

Applications

• Digital signal processing systems
• Communication equipment clocking
• Data acquisition modules

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 No Lead package footprint matches your PCB layout constraints to avoid assembly issues.

Selection Notes

Select this component when a precise 115.44 MHz reference is required with low voltage operation. The LVCMOS output ensures compatibility with standard digital logic levels. Consider the standby feature if power management during idle states is critical for your application efficiency.

Part Context

This part belongs to the 18QHTF21 series of surface mount crystal oscillators from Mercury Electronics. The series offers various frequencies and voltage options, all utilizing a standardized small form factor suitable for dense PCB layouts. The PD suffix indicates the inclusion of a power-down pin functionality.

Replacement Considerations

Direct substitutes include other 115.44 MHz LVCMOS oscillators in 4-SMD packages with 1.8V operation. Verify pinout compatibility and electrical specifications such as phase noise and stability before swapping.