BCD

7447 Datasheet – BCD to 7-Segment Decoder/Driver – Fairchild

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Part Number: 7447, DM7447A

Description

BCD to 7-Segment Decoders/Drivers

Manufacturer: Fairchild Semiconductor

General Description

The DM7446A and DM7447A feature active-LOW outputs designed for driving common-anode LEDs or incandescent indicators directly. All of the circuits have full ripple-blanking input/output controls and a lamp test input. Segment identification and resultant displays are shown on a following page. Display patterns for BCD input counts above nine are unique symbols to authenticate input conditions.

Pinout

7447-decode-dm7447-fairchild

Features

1. All circuit types feature lamp intensity modulation capability
2. Open-collector outputs drive indicators directly
3. Lamp-test provision
4. Leading/trailing zero suppression

 

7447 Datasheet

7447 pdf 

 

SN74LS47 Datasheet – BCD to 7-Segment Decoder / Driver

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Part Number: SN74LS47

Function: BCD to 7-Segment Decoder / Driver

Package: DIP, SOIC 16 Pin Type

Manufacturer: ON Semiconductor

Pinouts:

SN74LS47 datasheet

Description

The SN74LS47 are Low Power Schottky BCD to 7-Segment Decoder /Drivers consisting of NAND gates, input buffers and seven AND-OR-INVERT gates. They offer active LOW, high sink current outputs for driving indicators directly. Seven NAND gates and one driver are connected in pairs to make BCD data and its complement available to the seven decoding AND-OR-INVERT gates. The remaining NAND gate and three input buffers provide lamp test, blanking input/ripple-blanking output and ripple-blanking input.

Features

1. Lamp Intensity Modulation Capability (BI/RBO)
2. Open Collector Outputs
3. Lamp Test Provision
4. Leading/Trailing Zero Suppression
5. Input Clamp Diodes Limit High-Speed Termination Effects

Logic Diagram

components

Other data sheets are available within the file: 7447, 74LS47, SN74LS47D, SN74LS47N

SN74LS47 Datasheet PDF Download

SN74LS47 pdf