18QHTF21-42.95454-PD

Oscillators Overview

The 18QHTF21-42.95454-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 42.95454 MHz and utilizes LVCMOS output logic. The device is designed for low voltage applications, requiring a supply voltage of 1.8V. It features a Standby mode for power down functionality to reduce energy consumption during idle periods. The component is housed in a compact 4-SMD, No Lead package, suitable for surface mount assembly processes.

Oscillators Feature Summary

• LVCMOS output logic interface
• Integrated standby power down capability
• Compact 4-SMD no lead surface mount package

Oscillators Applications

• General purpose clock signal generation
• Digital circuit timing reference
• Embedded system clock sources

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the PCB footprint matches the 4-SMD no lead package dimensions provided in the official datasheet to prevent assembly errors.

Oscillators Selection Notes

Select this component when a precise 42.95454 MHz clock source is required with low power consumption capabilities. The LVCMOS output is suitable for direct interfacing with digital logic families operating at 1.8V. Consider the standby feature if power management during inactive states is a critical design constraint.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz frequency control products. The manufacturer has decades of experience in Taiwan's crystal industry. This series typically offers standard oscillators with various frequency options and voltage levels, catering to diverse electronic application needs.

Oscillators Replacement Considerations

Direct substitutes must match the 42.95454 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify pin compatibility and electrical characteristics before swapping.