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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Note that this is an ancient display and an ancient TTL chip both are museum old and satasheet it’s TTL open inputs will read as ‘high’. Would you like to answer one of these unanswered questions instead?

Armandas 6, 1 23 Adtasheet, 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. Thank you for your interest in this question.


DECODIFICADOR Y by Johan Andrade on Prezi

The pinout is here: Like the other two most popular answers, your 7 segment display needs to be connected to the properly Outputs to Seven-segment display inputs: Danny Sebahar 9. You need to tie them to appropriate logic levels RBI should be ‘0’ if you want to display a zero. 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.

Note that this datasheet illustration is a bit messed up and the bottom segment is D not Eand next segment clockwise decodificafor left is E. Simply wire the respective letters a.

ON Semiconductor

This is standard and is shown in the SN datasheet:. Home Questions Tags Users Unanswered. Michael George 1, 8 34 I just want to know the right way to connect the output decodificadoe of to the pins of 7-segment display? How to connect decoder to 7-segment display?

The pinout is here:. You can use a diode tester or a simple voltage decodifidador and a resistor to determine the pinout of your particular display.


Pin 5 should go to GND. Each segment on a 7-segment display is designated a letter A-G. Then just map the pins correctly again, from datasheet: Further, this really old chip saved a few transistors by not fully decoding inputs above 0x09, so 0x0A.

Then just map the pins correctly ddecodificador, from datasheet:. When I connect an input, the LEDs doesn’t decodificaeor numbers but they light up randomly. I’ve connected a decoder to 7-segment display as shown in figure. Here is a link to a video I made on instagram of mine working using this schematic: This is standard and is shown in the SN datasheet: By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

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