18QHTF21-121.192-PD

Overview

The 18QHTF21-121.192-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 121.192 MHz and utilizes LVCMOS output logic. The device is designed for low power consumption, featuring a 1.8V supply voltage with an integrated standby or power-down function to reduce energy usage during idle periods. It is housed in a compact 4-SMD, no-lead package, suitable for surface-mount assembly processes. This component provides precise timing signals for digital circuits requiring stable clock sources.

Feature Summary

• Integrates a standby mode for power reduction
• Utilizes LVCMOS output interface
• Features a leadless SMD package design

Applications

• Digital signal processing systems
• Communication equipment timing
• Embedded control units

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V operating voltage aligns with your system's power rails. Ensure the PCB footprint matches the 4-SMD no-lead package dimensions provided in the official datasheet to guarantee proper soldering and mechanical stability.

Selection Notes

Select this model when a precise 121.192 MHz clock source is required with minimal power consumption. The LVCMOS output ensures compatibility with standard logic families. Consider the standby feature if power management is critical. Verify environmental specifications such as operating temperature range against your application conditions.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz crystal components. The manufacturer has decades of experience in frequency control products. The series typically offers various frequency options within a standardized small form factor, catering to diverse electronic design needs.

Replacement Considerations

Direct substitutes must match the 121.192 MHz frequency, LVCMOS output, 1.8V supply, and 4-SMD no-lead package. Check equivalent models from other manufacturers ensuring identical pinout and electrical characteristics.