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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Simply wire the respective letters a. Further, this really old chip saved a few transistors by not fully decoding inputs above 0x09, so 0x0A.
I just want to know the right way to connect the output pins of to the pins of 7-segment display? Datasueet George 1, 8 34 When I connect an input, the LEDs doesn’t form numbers but they light up randomly.
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. How to connect decoder to 7-segment display? Then just map the pins correctly again, from datasheet:.
This is standard and is shown in the SN datasheet:. The pinout is here: Thank you for your interest in this question. Spehro Pefhany k 4 I’ve connected a decoder to 7-segment display as shown in figure. Danny Sebahar 9. Here is a link to a video I made on instagram of mine working using this schematic: Note that this datasheet illustration is a bit messed up and the bottom segment is D not Eand next segment clockwise lower left is E.
Note that this is an ancient display and an ancient TTL chip both are museum old and because it’s TTL open inputs will read as ‘high’.
Armandas 6, 1 23 Like the other two most popular answers, your 7 segment display needs to be connected to the properly Outputs to Seven-segment display inputs: Home Questions Tags Users Unanswered. The pinout is here:. You need to tie them to appropriate deckdificador 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.
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Each segment on a 7-segment display is designated a letter A-G.