CDC391DG4

Overview

The CDC391DG4 is a fanout buffer manufactured by Texas Instruments, designed for clock distribution applications. It features a single input circuit with a 1:6 output ratio, providing six TTL-compatible outputs. The device supports a maximum operating frequency of 100 MHz and operates within a supply voltage range of 4.75 V to 5.25 V. Packaged in a 16-SOIC surface-mount case with a 0.154-inch width, it is rated for an industrial temperature range of -40°C to +85°C. This component serves as a dedicated interface buffer for digital logic systems requiring signal splitting and level compatibility.

Feature Summary

• Single-input, six-output fanout buffer configuration
• TTL-compatible input and output logic levels
• Maximum operating frequency of 100 MHz
• Operates on a 5 V supply (4.75 V to 5.25 V)
• Surface-mount 16-SOIC package

Applications

• Clock signal distribution in digital systems
• Interface buffering between TTL logic families
• Signal splitting for multiple downstream components

Procurement Notes

Verify the specific ordering suffix 'G4' against manufacturer documentation to confirm lead-free status and RoHS compliance details. Ensure the procurement channel provides original manufacturer packaging or verified authenticity certificates. Confirm that the 16-SOIC tube packaging matches the required handling specifications for the production line.

Selection Notes

Select this component when a 1:6 fanout ratio with TTL compatibility is required at frequencies up to 100 MHz. It is suitable for designs operating strictly within the 4.75 V to 5.25 V supply range. Consider alternative packages if board space constraints differ from the standard 16-SOIC footprint. Verify that the thermal requirements align with the -40°C to +85°C operating range.

Part Context

The CDC391 belongs to the family of clock buffers and drivers produced by Texas Instruments. These devices are engineered to maintain signal integrity while distributing clock signals across multiple loads. The DG4 variant specifically denotes the 16-SOIC surface-mount package configuration, distinguishing it from other physical form factors within the same logical series.

Replacement Considerations

Consult official cross-reference lists for pin-compatible alternatives with identical 1:6 TTL ratios. Ensure any substitute maintains the 100 MHz frequency limit and 5 V supply tolerance. Verify that replacement parts offer equivalent propagation delay characteristics and output drive capabilities.