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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The pinout is here: How to connect decoder to 7-segment display? Simply wire the datasheeet letters a. Danny Sebahar 9. I just want to know the right way to connect the output pins of to the pins of 7-segment display? I’ve connected a decoder to 7-segment display as shown in figure.

74LS47 IC | 74LS47 Datasheet | Pin Diagram & Description

Home Questions Tags Users Unanswered. Spehro Pefhany k 4 Like the other two most popular answers, your 7 segment display needs to be connected to the properly Outputs to Seven-segment display inputs: Note that this is an ancient display datashwet an ancient TTL chip both are museum old and because it’s TTL open inputs will read as ‘high’.


You can use a diode tester or a simple voltage source and a resistor to determine the pinout of your particular display. Note that this datasheet illustration is decodifciador bit messed up and the bottom segment is D not Eand next segment clockwise lower left is E.

Each segment on a 7-segment display is designated a letter A-G.

Would you like to answer one of these unanswered questions instead? The pinout is here:.

Datasheet «SN54/74LS47»

Michael George 1, 8 34 Then just map the pins correctly again, from datasheet: By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

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.

You need to tie them to appropriate logic levels RBI should be ‘0’ if you want to display a zero. When I connect an input, the LEDs doesn’t form numbers but they light up randomly.


74LS47 Datasheet

Then just map the pins correctly again, from datasheet:. Thank you for your interest in this question. Armandas 6, 1 23 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.

Pin 5 should go to GND. Further, this really old chip saved a few transistors by not fully decoding inputs above 0x09, so 0x0A. This is datashet and is shown in the SN datasheet: This is standard and is shown in the SN datasheet:.

Here is a link to a video I made on instagram of mine working using this schematic: