SN74LS47N. SN74LS47NSR. ACTIVE. SO. NS. Green (RoHS. & no Sb /Br). CU NIPDAU. LevelC-UNLIM. 0 to 74LS SNJAJ. ACTIVE. 74LS47 component details, pinout & Datasheet. 74LS47 is a BCD to 7-segment decoder/driver IC & It accepts a binary coded decimal as input and converts it. 74LS47 datasheet, 74LS47 pdf, 74LS47 data sheet, datasheet, data sheet, pdf, Fairchild Semiconductor, BCD to 7-Segment Decoder/Driver with Open-Collector .

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How to connect decoder to 7-segment display?

Datasheet «SN54/74LS47»

Simply wire the respective letters a. Would you like to answer one of these unanswered questions instead? This is standard and is shown in the SN datasheet: Thank you for your interest in this question.

Pin 5 should go to GND. Each segment on a 7-segment display is designated a letter A-G. This is standard and is shown in the SN datasheet:.

Further, this really old chip saved a few transistors by not fully decoding inputs above 0x09, so 0x0A. Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site the association bonus does not count. Like the other two most popular answers, your 7 segment display needs to be connected to the properly Outputs to Seven-segment display inputs: You need to tie them to appropriate logic levels RBI should be ‘0’ if you want to display a zero.


You can use a diode tester or a simple voltage source and a resistor to determine the pinout of your particular display.

Michael George 1, 8 34 I’ve connected a decoder to 7-segment display as shown in figure. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

Note that this is an ancient display and an decdificador TTL chip both are museum old and because it’s TTL open inputs will read as ‘high’.

ON Semiconductor

Armandas 6, 1 23 Note that this datasheet illustration is a bit messed up and the bottom segment is 774ls47 not Eand next segment clockwise lower left is E. When I connect an input, the LEDs doesn’t form numbers but they light up randomly. I just want to know the right way to connect the output pins of to the pins of 7-segment display? Then just map the pins correctly again, from datasheet: The pinout is here:.


SN54/74LS47 Motorola BCD TO 7-SEGMENT DECODER / DRIVER ChipFind Datasheet Archive |

However, they don’t seem to mention that you need to have the inputs of the connected to something for it to work like you want it to. Here is a link to a video I made on instagram of mine working using this schematic: Spehro Pefhany k 4 74lls47 pinout is here: Danny Sebahar 9.

Then just map the pins correctly again, from datasheet:. Home Questions Tags Users Unanswered.