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Copyright7400 - 7448 DATAcopyright

LM / CD 74LS00 series TTL IC's: 7400 / 74LS00 to 7448 / 74LS48 series

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These "LS" chips are basically low power drain CMOS versions of the TTL range.
Please note, we do not stock all the listed chips on this page, however we can
order these in, depending on availability, "lead" times. These useful 74LSxxx building
blocks of logic IC's function are on lower voltages, eg: typically from 4.5V ~ 5.6V D.C.

Email us :sales@unitechelectronics.com

( Note: 7449 is a discontinued / superceded product )



    7400
  Quad 2-input NAND gates.

  

      +---+--+---+             +---+---*---+           __
   1A |1  +--+ 14| VCC         | A | B |/Y |      /Y = AB
   1B |2       13| 4B          +===+===*===+
  /1Y |3       12| 4A          | 0 | 0 | 1 |
   2A |4  7400 11| /4Y         | 0 | 1 | 1 |
   2B |5       10| 3B          | 1 | 0 | 1 |
  /2Y |6        9| 3A          | 1 | 1 | 0 |
  GND |7        8| /3Y         +---+---*---+
      +----------+

  Positive Logic
	    __
	Y = AB

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  Equivalent Chips
  • SN5400 (J)
  • SN54H00 (J)
  • SN54L00 (J)
  • SN54LS00 (J,W)
  • SN54S00 (J,W)
  • SN7400 (J,N)
  • SN74H00 (J,N)
  • SN74L00 (J,N)
  • SN74LS00 (J,N)
  • SN47S00 (J,N)

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    7401   Quad 2-input open-collector NAND gates.

      +---+--+---+             +---+---*---+           __
  /1Y |1  +--+ 14| VCC         | A | B |/Y |      /Y = AB
   1A |2       13| /4Y         +===+===*===+
   1B |3       12| 4B          | 0 | 0 | Z |
  /2Y |4  7401 11| 4A          | 0 | 1 | Z |
   2A |5       10| /3Y         | 1 | 0 | Z |
   2B |6        9| 3B          | 1 | 1 | 0 |
  GND |7        8| 3A          +---+---*---+
      +----------+

    7402  Quad 2-input NOR gates.

      +---+--+---+             +---+---*---+           ___
  /1Y |1  +--+ 14| VCC         | A | B |/Y |      /Y = A+B
   1A |2       13| /4Y         +===+===*===+
   1B |3       12| 4B          | 0 | 0 | 1 |
  /2Y |4  7402 11| 4A          | 0 | 1 | 0 |
   2A |5       10| /3Y         | 1 | 0 | 0 |
   2B |6        9| 3B          | 1 | 1 | 0 |
  GND |7        8| 3A          +---+---*---+
      +----------+

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    7403
  Quad 2-input open-collector NAND gates. 
      +---+--+---+             +---+---*---+           __
   1A |1  +--+ 14| VCC         | A | B |/Y |      /Y = AB
   1B |2       13| 4B          +===+===*===+
  /1Y |3       12| 4A          | 0 | 0 | Z |
   2A |4  7403 11| /4Y         | 0 | 1 | Z |
   2B |5       10| 3B          | 1 | 0 | Z |
  /2Y |6        9| 3A          | 1 | 1 | 0 |
  GND |7        8| /3Y         +---+---*---+
      +----------+


    7404
  Hex inverters. 

  

+---+--+---+ +---*---+ _ 1A |1 +--+ 14| VCC | A |/Y | /Y = A /1Y |2 13| 6A +===*===+ 2A |3 12| /6Y | 0 | 1 | /2Y |4 7404 11| 5A | 1 | 0 | 3A |5 10| /5Y +---*---+ /3Y |6 9| 4A GND |7 8| /4Y +----------+

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  Positive Logic
	    _
       	Y = A
  Equivalent Chips
  • SN5404 (J)
  • SN54H04 (J)
  • SN54L04 (J)
  • SN54LS04 (J,W)
  • SN54S04 (J,W)
  • SN7404 (J,N)
  • SN74H04 (J,N)
  • SN74L04 (J,N)
  • SN74LS04 (J,N)
  • SN47S04 (J,N)


    7405   Hex open-collector inverters. +---+--+---+ +---*---+ _ 1A |1 +--+ 14| VCC | A |/Y | /Y = A /1Y |2 13| 6A +===*===+ 2A |3 12| /6Y | 0 | Z | /2Y |4 7405 11| 5A | 1 | 0 | 3A |5 10| /5Y +---*---+ /3Y |6 9| 4A GND |7 8| /4Y +----------+

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    7406
  Hex open-collector high-voltage inverters.
  Maximum output voltage is 30V. 
      +---+--+---+             +---*---+               _
   1A |1  +--+ 14| VCC         | A |/Y |          /Y = A
  /1Y |2       13| 6A          +===*===+
   2A |3       12| /6Y         | 0 | Z |
  /2Y |4  7406 11| 5A          | 1 | 0 |
   3A |5       10| /5Y         +---*---+
  /3Y |6        9| 4A
  GND |7        8| /4Y
      +----------+


    7407
  Hex open-collector high-voltage buffers.
  Maximum output voltage is 30V. 
      +---+--+---+             +---*---+
   1A |1  +--+ 14| VCC         | A | Y |           Y = A
   1Y |2       13| 6A          +===*===+
   2A |3       12| 6Y          | 0 | 0 |
   2Y |4  7407 11| 5A          | 1 | Z |
   3A |5       10| 5Y          +---*---+
   3Y |6        9| 4A
  GND |7        8| 4Y
      +----------+

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    7408  Quad 2-input AND gates. 
  

+---+--+---+ +---+---*---+ 1A |1 +--+ 14| VCC | A | B | Y | Y = AB 1B |2 13| 4B +===+===*===+ 1Y |3 12| 4A | 0 | 0 | 0 | 2A |4 7408 11| 4Y | 0 | 1 | 0 | 2B |5 10| 3B | 1 | 0 | 0 | 2Y |6 9| 3A | 1 | 1 | 1 | GND |7 8| 3Y +---+---*---+ +----------+
  Positive Logic
	    
	Y = AB


    7409  Quad 2-input open-collector AND gates. 
      +---+--+---+             +---+---*---+
   1A |1  +--+ 14| VCC         | A | B | Y |       Y = AB
   1B |2       13| 4B          +===+===*===+
   1Y |3       12| 4A          | 0 | 0 | 0 |
   2A |4  7409 11| 4Y          | 0 | 1 | 0 |
   2B |5       10| 3B          | 1 | 0 | 0 |
   2Y |6        9| 3A          | 1 | 1 | Z |
  GND |7        8| 3Y          +---+---*---+
      +----------+

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    7410
  Triple 3-input NAND gates. 
  7410-74LS10
      +---+--+---+             +---+---+---*---+       ___
   1A |1  +--+ 14| VCC         | A | B | C |/Y |  /Y = ABC
   1B |2       13| 1C          +===+===+===*===+
   2A |3       12| /1Y         | 0 | X | X | 1 |
   2B |4  7410 11| 3C          | 1 | 0 | X | 1 |
   2C |5       10| 3B          | 1 | 1 | 0 | 1 |
  /2Y |6        9| 3A          | 1 | 1 | 1 | 0 |
  GND |7        8| /3Y         +---+---+---*---+
      +----------+
  Positive Logic
	    ___
	Y = ABC


    7411
  Triple 3-input AND gates. 
      +---+--+---+             +---+---+---*---+
   1A |1  +--+ 14| VCC         | A | B | C | Y |   Y = ABC
   1B |2       13| 1C          +===+===+===*===+
   2A |3       12| 1Y          | 0 | X | X | 0 |
   2B |4  7411 11| 3C          | 1 | 0 | X | 0 |
   2C |5       10| 3B          | 1 | 1 | 0 | 0 |
   2Y |6        9| 3A          | 1 | 1 | 1 | 1 |
  GND |7        8| 3Y          +---+---+---*---+
      +----------+

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    7412
  Triple 3-input open-collector NAND gates. 
      +---+--+---+             +---+---+---*---+       ___
   1A |1  +--+ 14| VCC         | A | B | C |/Y |  /Y = ABC
   1B |2       13| 1C          +===+===+===*===+
   2A |3       12| /1Y         | 0 | X | X | Z |
   2B |4  7410 11| 3C          | 1 | 0 | X | Z |
   2C |5       10| 3B          | 1 | 1 | 0 | Z |
  /2Y |6        9| 3A          | 1 | 1 | 1 | 0 |
  GND |7        8| /3Y         +---+---+---*---+
      +----------+


    7413
  Dual 4-input NAND gates with schmitt-trigger inputs.
  0.8V typical input hysteresis at VCC=+5V. 
      +---+--+---+             +---+---+---+---*---+        ____
   1A |1  +--+ 14| VCC         | A | B | C | D |/Y |   /Y = ABCD
   1B |2       13| 2D          +===+===+===+===*===+
      |3       12| 2C          | 0 | X | X | X | 1 |
   1C |4  7413 11|             | 1 | 0 | X | X | 1 |
   1D |5       10| 2B          | 1 | 1 | 0 | X | 1 |
  /1Y |6        9| 2A          | 1 | 1 | 1 | 0 | 1 |
  GND |7        8| /2Y         | 1 | 1 | 1 | 1 | 0 |
      +----------+             +---+---+---+---*---+

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    7414
  Hex inverters with schmitt-trigger inputs.
  0.8V typical input hysteresis at VCC=+5V. 
      +---+--+---+             +---*---+               _
   1A |1  +--+ 14| VCC         | A |/Y |          /Y = A
  /1Y |2       13| 6A          +===*===+
   2A |3       12| /6Y         | 0 | 1 |
  /2Y |4  7414 11| 5A          | 1 | 0 |
   3A |5       10| /5Y         +---*---+
  /3Y |6        9| 4A
  GND |7        8| /4Y
      +----------+


    7415
  Triple 3-input open-collector AND gates. 
      +---+--+---+             +---+---+---*---+
   1A |1  +--+ 14| VCC         | A | B | C | Y |   Y = ABC
   1B |2       13| 1C          +===+===+===*===+
   2A |3       12| 1Y          | 0 | X | X | 0 |
   2B |4  7415 11| 3C          | 1 | 0 | X | 0 |
   2C |5       10| 3B          | 1 | 1 | 0 | 0 |
   2Y |6        9| 3A          | 1 | 1 | 1 | Z |
  GND |7        8| 3Y          +---+---+---*---+
      +----------+

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    7416\
  Hex open-collector high-voltage inverters.
  Maximum output voltage is 15V. 
      +---+--+---+             +---*---+               _
   1A |1  +--+ 14| VCC         | A |/Y |          /Y = A
  /1Y |2       13| 6A          +===*===+
   2A |3       12| /6Y         | 0 | Z |
  /2Y |4  7416 11| 5A          | 1 | 0 |
   3A |5       10| /5Y         +---*---+
  /3Y |6        9| 4A
  GND |7        8| /4Y
      +----------+


    7417
  Hex open-collector high-voltage buffers.
  Maximum output voltage is 15V. 
      +---+--+---+             +---*---+
   1A |1  +--+ 14| VCC         | A | Y |          Y = A
   1Y |2       13| 6A          +===*===+
   2A |3       12| 6Y          | 0 | 0 |
   2Y |4  7417 11| 5A          | 1 | Z |
   3A |5       10| 5Y          +---*---+
   3Y |6        9| 4A
  GND |7        8| 4Y
      +----------+

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    7418
  Dual 4-input NAND gates with schmitt-trigger inputs.
  0.8V typical input hysteresis at VCC=+5V. 

      +---+--+---+             +---+---+---+---*---+        ____
   1A |1  +--+ 14| VCC         | A | B | C | D |/Y |   /Y = ABCD
   1B |2       13| 2D          +===+===+===+===*===+
      |3       12| 2C          | 0 | X | X | X | 1 |
   1C |4  7418 11|             | 1 | 0 | X | X | 1 |
   1D |5       10| 2B          | 1 | 1 | 0 | X | 1 |
  /1Y |6        9| 2A          | 1 | 1 | 1 | 0 | 1 |
  GND |7        8| /2Y         | 1 | 1 | 1 | 1 | 0 |
      +----------+             +---+---+---+---*---+


    7419
  Hex inverters with schmitt-trigger line-receiver inputs.
  0.8V typical input hysteresis at VCC=+5V. 
      +---+--+---+             +---*---+               _
   1A |1  +--+ 14| VCC         | A |/Y |          /Y = A
  /1Y |2       13| 6A          +===*===+
   2A |3       12| /6Y         | 0 | 1 |
  /2Y |4  7414 11| 5A          | 1 | 0 |
   3A |5       10| /5Y         +---*---+
  /3Y |6        9| 4A
  GND |7        8| /4Y
      +----------+

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    7420
  Dual 4-input NAND gates. 
      +---+--+---+             +---+---+---+---*---+        ____
   1A |1  +--+ 14| VCC         | A | B | C | D |/Y |   /Y = ABCD
   1B |2       13| 2D          +===+===+===+===*===+
      |3       12| 2C          | 0 | X | X | X | 1 |
   1C |4  7420 11|             | 1 | 0 | X | X | 1 |
   1D |5       10| 2B          | 1 | 1 | 0 | X | 1 |
  /1Y |6        9| 2A          | 1 | 1 | 1 | 0 | 1 |
  GND |7        8| /2Y         | 1 | 1 | 1 | 1 | 0 |
      +----------+             +---+---+---+---*---+


    7421
  Dual 4-input AND gates. 
      +---+--+---+             +---+---+---+---*---+
   1A |1  +--+ 14| VCC         | A | B | C | D | Y |    Y = ABCD
   1B |2       13| 2D          +===+===+===+===*===+
      |3       12| 2C          | 0 | X | X | X | 0 |
   1C |4  7421 11|             | 1 | 0 | X | X | 0 |
   1D |5       10| 2B          | 1 | 1 | 0 | X | 0 |
   1Y |6        9| 2A          | 1 | 1 | 1 | 0 | 0 |
  GND |7        8| 2Y          | 1 | 1 | 1 | 1 | 1 |
      +----------+             +---+---+---+---*---+

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    7422
  Dual 4-input open-collector NAND gates. 
      +---+--+---+             +---+---+---+---*---+        ____
   1A |1  +--+ 14| VCC         | A | B | C | D |/Y |   /Y = ABCD
   1B |2       13| 2D          +===+===+===+===*===+
      |3       12| 2C          | 0 | X | X | X | Z |
   1C |4  7422 11|             | 1 | 0 | X | X | Z |
   1D |5       10| 2B          | 1 | 1 | 0 | X | Z |
  /1Y |6        9| 2A          | 1 | 1 | 1 | 0 | Z |
  GND |7        8| /2Y         | 1 | 1 | 1 | 1 | 0 |
      +----------+             +---+---+---+---*---+


    7424
  Quad 2-input NAND gates with schmitt-trigger line-receiver inputs.
  0.8V typical input hysteresis at VCC=+5V. 
      +---+--+---+             +---+---*---+           __
   1A |1  +--+ 14| VCC         | A | B |/Y |      /Y = AB
   1B |2       13| 4B          +===+===*===+
  /1Y |3       12| 4A          | 0 | 0 | 1 |
   2A |4  7424 11| /4Y         | 0 | 1 | 1 |
   2B |5       10| 3B          | 1 | 0 | 1 |
  /2Y |6        9| 3A          | 1 | 1 | 0 |
  GND |7        8| /3Y         +---+---*---+
      +----------+

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    7425
  Dual 4-input NOR gates with enable input.
      +---+--+---+                 __________
   1A |1  +--+ 14| VCC         Y = G(A+B+C+D)
   1B |2       13| 2D
   1G |3       12| 2C
   1C |4  7425 11| 2G
   1D |5       10| 2B
  /1Y |6        9| 2A
  GND |7        8| /2Y
      +----------+


    7426
  Quad 2-input open-collector high-voltage NAND gates.
  Maximum output voltage is 15V. 
      +---+--+---+             +---+---*---+           __
   1A |1  +--+ 14| VCC         | A | B |/Y |      /Y = AB
   1B |2       13| 4B          +===+===*===+
  /1Y |3       12| 4A          | 0 | 0 | Z |
   2A |4  7426 11| /4Y         | 0 | 1 | Z |
   2B |5       10| 3B          | 1 | 0 | Z |
  /2Y |6        9| 3A          | 1 | 1 | 0 |
  GND |7        8| /3Y         +---+---*---+
      +----------+

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    7427
  Triple 3-input NOR gates. 
      +---+--+---+             +---+---+---*---+       _____
   1A |1  +--+ 14| VCC         | A | B | C |/Y |  /Y = A+B+C
   1B |2       13| 1C          +===+===+===*===+
   2A |3       12| /1Y         | 0 | 0 | 0 | 1 |
   2B |4  7427 11| 3C          | 0 | 0 | 1 | 0 |
   2C |5       10| 3B          | 0 | 1 | X | 0 |
  /2Y |6        9| 3A          | 1 | X | X | 0 |
  GND |7        8| /3Y         +---+---+---*---+
      +----------+


    7428
  Quad 2-input NOR gates with buffered outputs. 
      +---+--+---+             +---+---*---+           ___
  /1Y |1  +--+ 14| VCC         | A | B |/Y |      /Y = A+B
   1A |2       13| /4Y         +===+===*===+
   1B |3       12| 4B          | 0 | 0 | 1 |
  /2Y |4  7428 11| 4A          | 0 | 1 | 0 |
   2A |5       10| /3Y         | 1 | 0 | 0 |
   2B |6        9| 3B          | 1 | 1 | 0 |
  GND |7        8| 3A          +---+---*---+
      +----------+

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    7430
  8-input NAND gate. 
  
      +---+--+---+                 ________
    A |1  +--+ 14| VCC        /Y = ABCDEFGH
    B |2       13|
    C |3       12| H
    D |4  7430 11| G
    E |5       10|
    F |6        9|
  GND |7        8| /Y
      +----------+
  Positive Logic
	    ________
  	Y = ABCDEFGH


    7431
  Hex delay elements.
  Typical delays are 27.5ns (1,6), 46.5ns (2,5),6ns (3,4).   Improved output currents IoH=-1.2mA, IoL=24mA for gates 3 and 4. +---+--+---+ _ _____ 1A |1 +--+ 16| VCC /1Y=1A /4Y=4A.4B /1Y |2 15| 6A 2A |3 14| /6Y 2Y=2A 5Y=5A 2Y |4 13| 5A _____ _ 3A |5 7431 12| 5Y /3Y=3A.3B /6Y=6A 3B |6 11| 4B /3Y |7 10| 4A GND |8 9| /4Y +----------+

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    7432   Quad 2-input OR gates.   

      +---+--+---+             +---+---*---+
   1A |1  +--+ 14| VCC         | A | B | Y |       Y = A+B
   1B |2       13| 4B          +===+===*===+
   1Y |3       12| 4A          | 0 | 0 | 0 |
   2A |4  7432 11| 4Y          | 0 | 1 | 1 |
   2B |5       10| 3B          | 1 | 0 | 1 |
   2Y |6        9| 3A          | 1 | 1 | 1 |
  GND |7        8| 3Y          +---+---*---+
      +----------+
  Positive Logic
	    
  	Y = A+B


    7433
  Quad 2-input open-collector NOR gates. 
      +---+--+---+             +---+---*---+           ___
  /1Y |1  +--+ 14| VCC         | A | B |/Y |      /Y = A+B
   1A |2       13| /4Y         +===+===*===+
   1B |3       12| 4B          | 0 | 0 | Z |
  /2Y |4  7433 11| 4A          | 0 | 1 | 0 |
   2A |5       10| /3Y         | 1 | 0 | 0 |
   2B |6        9| 3B          | 1 | 1 | 0 |
  GND |7        8| 3A          +---+---*---+
      +----------+

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    7437
  Quad 2-input NAND gates with buffered output. 
      +---+--+---+             +---+---*---+           __
   1A |1  +--+ 14| VCC         | A | B |/Y |      /Y = AB
   1B |2       13| 4B          +===+===*===+
  /1Y |3       12| 4A          | 0 | 0 | 1 |
   2A |4  7437 11| /4Y         | 0 | 1 | 1 |
   2B |5       10| 3B          | 1 | 0 | 1 |
  /2Y |6        9| 3A          | 1 | 1 | 0 |
  GND |7        8| /3Y         +---+---*---+
      +----------+


    7438
  Quad 2-input open-collector NAND gates with buffered output.
      +---+--+---+             +---+---*---+           __
   1A |1  +--+ 14| VCC         | A | B |/Y |      /Y = AB
   1B |2       13| 4B          +===+===*===+
  /1Y |3       12| 4A          | 0 | 0 | Z |
   2A |4  7438 11| /4Y         | 0 | 1 | Z |
   2B |5       10| 3B          | 1 | 0 | Z |
  /2Y |6        9| 3A          | 1 | 1 | 0 |
  GND |7        8| /3Y         +---+---*---+
      +----------+

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    7440
  Dual 4-input NAND gates with buffered output. 
      +---+--+---+             +---+---+---+---*---+        ____
   1A |1  +--+ 14| VCC         | A | B | C | D |/Y |   /Y = ABCD
   1B |2       13| 2D          +===+===+===+===*===+
      |3       12| 2C          | 0 | X | X | X | 1 |
   1C |4  7440 11|             | 1 | 0 | X | X | 1 |
   1D |5       10| 2B          | 1 | 1 | 0 | X | 1 |
  /1Y |6        9| 2A          | 1 | 1 | 1 | 0 | 1 |
  GND |7        8| /2Y         | 1 | 1 | 1 | 1 | 0 |
      +----------+             +---+---+---+---*---+


    7442
  1-of-10 inverting decoder/demultiplexer. 
      +---+--+---+             +---+---+---+---*---+---+---+---+
  /Y0 |1  +--+ 16| VCC         | S3| S2| S1| S0|/Y0|/Y1|...|/Y9|
  /Y1 |2       15| S0          +===+===+===+===*===+===+===+===+
  /Y2 |3       14| S1          | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 |
  /Y3 |4       13| S2          | 0 | 0 | 0 | 1 | 1 | 0 | 1 | 1 |
  /Y4 |5  7442 12| S3          | . | . | . | . | 1 | 1 | . | 1 |
  /Y5 |6       11| /Y9         | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 0 |
  /Y6 |7       10| /Y8         | 1 | 0 | 1 | X | 1 | 1 | 1 | 1 |
  GND |8        9| /Y7         | 1 | 1 | X | X | 1 | 1 | 1 | 1 |
      +----------+             +---+---+---+---*---+---+---+---+

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    7446
  Open-collector BCD to 7-segment decoder/common-anode
  LED driver with ripple blank input and output. 
  The 7446 has 30V outputs, 7447 has 15V outputs. 
       +---+--+---+
    A1 |1  +--+ 16| VCC
    A2 |2       15| /YF
   /LT |3       14| /YG
  /RBO |4       13| /YA
  /RBI |5  7446 12| /YB
    A3 |6       11| /YC
    A0 |7       10| /YD
   GND |8        9| /YE
       +----------+


    7447
  Open-collector BCD to 7-segment decoder/common-anode LED driver
  with ripple blank input and output. The 7447 has 15V outputs. 
       +---+--+---+
    A1 |1  +--+ 16| VCC
    A2 |2       15| /YF
   /LT |3       14| /YG
  /RBO |4       13| /YA
  /RBI |5  7447 12| /YB
    A3 |6       11| /YC
    A0 |7       10| /YD
   GND |8        9| /YE
       +----------+

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    7448
  BCD to 7-segment decoder/common-cathode LED
  driver with rippleblank input and output. 
       +---+--+---+
    A1 |1  +--+ 16| VCC
    A2 |2       15| YF
   /LT |3       14| YG
  /RBO |4       13| YA
  /RBI |5  7448 12| YB
    A3 |6       11| YC
    A0 |7       10| YD
   GND |8        9| YE
       +----------+


7449 This 7-segment display decoder IC has been superceded and is no longer in production. It (used to) convert a 4-bit binary-coded decimal value, that is the numbers 0 to 9 coded as binary patterns 0000 to 1001 into the code required to drive a seven-segment display. The additional 'ndark' input allows to disable all outputs. This chip was discontinued in 1986.

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This page was upgraded January 30th 2013