SN74LS47NG4

Overview

The SN74LS47NG4 is a BCD-to-seven-segment decoder and driver manufactured by Texas Instruments. It belongs to the SN74LS series, utilizing Low-power Schottky TTL technology. The device accepts Binary-Coded Decimal inputs and drives common-anode seven-segment displays. It features active-low outputs with internal pull-up resistors for segment control. Key specifications include a supply voltage range of 4.5 V to 5.5 V and an operating temperature range of 0°C to +70°C. The component is housed in a 16-pin Plastic Dual In-Line Package (PDIP) with a leaded termination.

Feature Summary

• Converts four-bit binary-coded decimal codes into signals suitable for driving seven-segment display segments.
• Includes dedicated lamp test and ripple blanking input/output terminals for display maintenance and cascading operations.
• Provides active-low output drivers compatible with common-anode LED display arrays.

Applications

• Digital clock and timer display interfaces
• Numeric readout systems for industrial instrumentation
• Consumer electronic devices requiring decimal digit visualization

Procurement Notes

Verify that the ordering suffix 'G4' corresponds to the specific lead-free and environmental compliance requirements mandated by your assembly process. Confirm the package designation matches the physical footprint constraints of your printed circuit board layout. Ensure the logic family compatibility aligns with existing system voltage levels before finalizing procurement orders.

Selection Notes

Select this component when designing circuits that require direct interfacing between microprocessors or logic controllers and seven-segment displays. It is appropriate for applications necessitating standard TTL logic levels and through-hole mounting. Consider alternative packages if surface-mount space is limited or if extended industrial temperature ranges are required.

Part Context

This part is a member of the Texas Instruments SN74LS family, which utilizes Low-power Schottky technology to balance speed and power consumption. The SN74LS47 variant specifically addresses the need for decoding binary data into human-readable numeric formats. It serves as a foundational component in legacy digital design architectures involving discrete display elements.

Replacement Considerations

• SN74LS47N
• SN74LS47DR