18QHTF21-42.450-PD

Oscillators Overview

The 18QHTF21-42.450-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 42.45 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes a standby or power-down function for energy management. It is housed in a compact 4-SMD, no-lead package with dimensions of 2.0x1.6mm.

Oscillators Feature Summary

• LVCMOS output logic for digital interface compatibility
• Integrated standby mode for power reduction
• Compact surface-mount package design

Oscillators Applications

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

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target application's specifications 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 to guarantee proper soldering and mechanical stability during assembly processes.

Oscillators Selection Notes

Select this component when a precise 42.45 MHz clock source is required with low power consumption capabilities. The LVCMOS output is suitable for standard digital logic families. Consider the physical size constraints of the 2.0x1.6mm package when designing the layout. Evaluate the need for the standby feature if power efficiency is a critical design parameter for the end product.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies within a small form factor. The series is designed for applications requiring reliable timing signals in space-constrained environments. Mercury Electronics has a history of manufacturing quartz crystals and oscillators, providing industry-standard frequency control solutions.

Oscillators Replacement Considerations

Direct replacements must match the 42.45 MHz frequency, LVCMOS output type, 1.8V supply voltage, and 4-SMD no-lead package. Verify pinout compatibility and thermal characteristics. Cross-reference with other manufacturers offering similar XO specifications in the same package size to ensure functional equivalence.