SN74LS47DG4

Overview

The SN74LS47DG4 is a BCD-to-seven-segment decoder and driver manufactured by Texas Instruments in the LS logic series. It features a 16-pin SOIC package and operates within a supply voltage range of 4.5V to 5.5V. The device includes active-low outputs designed to drive common-anode seven-segment displays, along with dedicated lamp test and ripple blanking inputs for display control functions.

Feature Summary

• Performs conversion of binary-coded decimal inputs into signals suitable for driving seven-segment displays
• Includes active-low outputs specifically configured for common-anode display configurations
• Provides functional controls including lamp test and ripple blanking capabilities

Applications

• Driving common-anode seven-segment LED displays
• Digital counting systems requiring visual output
• Decimal decoding circuits in instrumentation

Procurement Notes

Verify the specific suffix 'DG4' indicates lead-free composition and RoHS compliance as per manufacturer standards. Confirm the SOIC-16 package dimensions match your PCB footprint requirements. Ensure the operating temperature range aligns with your system's environmental conditions before finalizing procurement.

Selection Notes

Select this component when a standard TTL-compatible BCD-to-decoder interface is required for common-anode displays. Consider the LS series propagation delays and power consumption characteristics relative to other logic families. Verify that the active-low output polarity matches your display hardware specifications.

Part Context

This part belongs to the Texas Instruments 74LS logic family, known for compatibility with standard TTL circuits. The SN74LS47 variant specifically addresses the need for direct interfacing between digital counters and visual display elements without additional external decoding logic.

Replacement Considerations

SN74LS47DRG4

FAQ

What type of seven-segment display does the SN74LS47DG4 support?

It supports common-anode displays due to its active-low output configuration.

Does the SN74LS47DG4 include display control features?

Yes, it includes lamp test and ripple blanking inputs for display management.