18QHTF21-12.200-PD

Overview

The 18QHTF21-12.200-PD is a 12.2 MHz crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It utilizes LVCMOS output logic and operates on a 1.8V supply voltage. The device supports a Standby (Power Down) mode for energy management. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly.

Feature Summary

• LVCMOS output interface
• 1.8V single supply operation
• Standby power down capability

Applications

• Low-power electronic systems
• Clock signal generation
• Embedded circuit timing

Procurement Notes

Verify the exact frequency tolerance and load capacitance requirements against the specific application design before ordering. Confirm that the 1.8V supply voltage aligns with the target system's power rails. Ensure the 4-SMD no-lead package footprint matches the PCB layout specifications to guarantee proper soldering and mechanical stability during assembly processes.

Selection Notes

Select this component when a precise 12.2 MHz clock source is required with low voltage operation. The LVCMOS output ensures compatibility with standard digital logic families. The standby feature allows for power optimization in battery-operated devices. Verify thermal performance within the specified operating temperature range for reliable long-term operation in the intended environment.

Part Context

This part belongs to the 18QHTF21 series of standard crystal oscillators from Mercury Electronics. The series offers various frequencies with consistent 1.8V LVCMOS outputs and compact SMD packaging. The 'PD' suffix indicates the inclusion of a power-down control function, distinguishing it from continuous-operation variants within the same family.

Replacement Considerations

Direct substitutes include other 12.2 MHz LVCMOS oscillators with identical 1.8V supply and 4-SMD no-lead footprints. Verify pinout compatibility and electrical characteristics such as phase noise and jitter if replacing with different manufacturers. Ensure the replacement also supports the standby functionality if required by the design.