M7S28FDJ 40.000000

Overview

The M7S28FDJ 40.000000 is a surface-mount HCMOS/TTL output clock oscillator manufactured by MtronPTI. It operates at a nominal frequency of 40 MHz and utilizes a 4-SOJ ceramic package with a 5.08 mm pitch, measuring 9x14 mm. The device supports a standard 5.0 V supply voltage and provides an output load capacity of 10 TTL loads or 15 pF. Key electrical characteristics include rise and fall times of 7 ns and a frequency stability of 20%. This component is designed for applications requiring reliable timing signals in compact electronic systems.

Feature Summary

• Provides stable HCMOS/TTL clock signals via a compact surface-mount J-lead ceramic package
• Operates on a standard 5.0 V supply with defined output loading capabilities
• Features fast signal transition times suitable for digital circuit synchronization

Applications

• Digital system clock generation
• Microprocessor timing circuits
• Communication interface synchronization

Procurement Notes

Verify the specific ordering suffix to ensure the correct frequency tolerance and temperature range match your design requirements. Confirm that the 4-SOJ package dimensions align with your PCB footprint constraints. Check RoHS compliance status if environmental regulations apply to your manufacturing process. Ensure the supplier provides valid traceability documentation for quality assurance purposes.

Selection Notes

Select this oscillator when a 40 MHz reference signal is required for HCMOS or TTL logic families. The 4-SOJ package is appropriate for automated surface-mount assembly processes. Consider the 20% frequency stability specification against your system's jitter and timing budget requirements. Verify that the 5V operating voltage matches your board's power distribution network.

Part Context

This part belongs to the M7S series of clock oscillators from MtronPTI. The series offers various frequencies and packages, including surface-mount options. The M7S28FDJ variant specifically denotes the 4-pin SOJ configuration. These components are widely used in industrial and commercial electronics where precise timing is essential for data integrity and system performance.

Replacement Considerations

Direct replacements must match the 40 MHz frequency, 4-SOJ package, and HCMOS/TTL output type. Verify pin compatibility and physical dimensions before substitution. Alternative parts may require adjustments to the PCB layout if the lead pitch differs. Ensure the replacement maintains the required operating voltage and stability specifications.