Copyright74303 - 74399copyright

LM/CD 7400 series TTL IC's: 74303 to 74399


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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



    74303
  8-line inverting/noninverting divide by 2 clock driver.
  Six outputs in phase with CLK, two out of phase.
      +---+--+---+
   Q3 |1  +--+ 16| Q2
   Q4 |2       15| Q1
  GND |3       14| /RST
  GND |4   74  13| VCC
  GND |5  303  12| VCC
   Q5 |6       11| CLK
   Q6 |7       10| /PRE
  /Q7 |8        9| /Q8
      +----------+

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    74304
  8-line noninverting divide by 2 clock driver.

      +---+--+---+
   Q3 |1  +--+ 16| Q2
   Q4 |2       15| Q1
  GND |3       14| /RST
  GND |4   74  13| VCC
  GND |5  304  12| VCC
   Q5 |6       11| CLK
   Q6 |7       10| /PRE
   Q7 |8        9| Q8
      +----------+

    74305
  8-line inverting/noninverting divide by 2 clock driver.
  Four outputs in phase with CLK, four out of phase.

      +---+--+---+
   Q3 |1  +--+ 16| Q2
   Q4 |2       15| Q1
  GND |3       14| /RST
  GND |4   74  13| VCC
  GND |5  305  12| VCC
  /Q5 |6       11| CLK
  /Q6 |7       10| /PRE
  /Q7 |8        9| /Q8
      +----------+

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    74306
  2-bit 3-state noninverting buffer/line driver.

       +---+--+---+            +---+---*---+
  /1OE |1  +--+  8| 1Y         | A |/OE| Y |
    1A |2   74   7| VCC        +===+===*===+
   GND |3  306   6| 1A         | 0 | 0 | 0 |
  /2OE |4        5| 2Y         | 1 | 0 | 1 |
       +----------+            | X | 1 | Z |
                               +---+---*---+

    74322
  8-bit 3-state shift register with with sign
  extension and selectable serial inputs. Multiplexed parallel I/O.

         +---+--+---+
     /OE |1  +--+ 20| VCC
  SH//LD |2       19| E//D
       D |3       18| /SEXT
      P0 |4       17| E
      P2 |5   74  16| P1
      P4 |6  322  15| P3
      P6 |7       14| P5
     /OE |8       13| P7
    /RST |9       12| Q7
     GND |10      11| CLK
         +----------+

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    74323
  8-bit 3-state bidirectional universal shift register
  with reset and multiplexed parallel I/O.

       +---+--+---+
    S0 |1  +--+ 20| VCC
  /OE1 |2       19| S1
  /OE2 |3       18| D
    P6 |4       17| Q7
    P4 |5   74  16| P7
    P2 |6  323  15| P5
    P0 |7       14| P3
    Q0 |8       13| P1
  /RST |9       12| CLK
   GND |10      11| L
       +----------+

    74328
  6-line selectable phase clock driver.

      +---+--+---+
  GND |1  +--+ 16| 1Y1
  1Y2 |2       15| SEL1
  2Y1 |3       14| VCC
  GND |4   74  13| SEL2
  2Y2 |5  328  12| A
  3Y1 |6       11| VCC
  GND |7       10| SEL3
  4Y1 |8        9| SEL4
      +----------+

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    74329
  6-line selectable phase clock driver.

      +---+--+---+
  GND |1  +--+ 16| 1Y1
  1Y2 |2       15| SEL1
  2Y1 |3       14| VCC
  GND |4   74  13| SEL2
  2Y2 |5  329  12| A
  3Y1 |6       11| VCC
  GND |7       10| SEL3
  4Y1 |8        9| SEL4
      +----------+

    74330
  Dual 1-line to 3-line noninverting clock driver and 1-line
  to 4-line noninverting divide by 2 clock driver.

       +---+--+---+
   GND |1  +--+ 24| OEQ
    Q1 |2       23| Q3
    Q2 |3       22| CLKQ
   GND |4       21| VCC
    X1 |5       20| RST
   OEX |6   74  19| X3
  CLKX |7  330  18| GND
    X2 |8       17| X4
   GND |9       16| VCC
    Y1 |10      15| OEY
    Y2 |11      14| Y3
   GND |12      13| CLKY
       +----------+

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    74337
  8-line 3-state noninverting clock driver with divide by 2 output on 4 lines.

       +---+--+---+
    Y3 |1  +--+ 20| Y2
   GND |2       19| GND
    Y4 |3       18| Y1
   VCC |4       17| VCC
   /OE |5   74  16| CLK
  /RST |6  337  15| GND
   VCC |7       14| VCC
    Q1 |8       13| Q4
   GND |9       12| GND
    Q2 |10      11| Q3
       +----------+

    74338
  6-line noninverting clock driver with divide by 2 and PLL.
  Four outputs toggle at the clock, one at one-half speed,
  one at twice the speed.

      +---+--+---+
  GND |1  +--+ 20| /OE
   Y1 |2       19| VCC
  GND |3       18| DF
   Y2 |4       17| VCC
  GND |5   74  16| CLKIN
  GND |6  338  15| GND
   Y3 |7       14| HF
  GND |8       13| VCC
   Y4 |9       12| /RST
  GND |10      11| VCC
      +----------+

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    74339
  8-line 3-state noninverting clock driver with divide by 2 output on 4 lines.

       +---+--+---+
    Y3 |1  +--+ 20| Y2
   GND |2       19| GND
    Y4 |3       18| Y1
   VCC |4       17| VCC
   /OE |5   74  16| CLK
  /RST |6  339  15| GND
   VCC |7       14| VCC
    Q1 |8       13| Q4
   GND |9       12| GND
    Q2 |10      11| Q3
       +----------+

    74340
  8-line inverting clock driver.

      +---+--+---+
  VCC |1  +--+ 20| VCC
   E1 |2       19| Q1
   E2 |3       18| Q2
   IN |4       17| GND
   P0 |5   74  16| Q3
   P1 |6  340  15| Q4
  VCC |7       14| GND
   Q8 |8       13| Q5
   Q7 |9       12| Q6
  GND |10      11| GND
      +----------+

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    74348
  8-to-3 line 3-state inverting priority encoder with cascade inputs.

      +---+--+---+
  /A4 |1  +--+ 16| VCC
  /A5 |2       15| /EO
  /A6 |3       14| /GS
  /A7 |4   74  13| /A3
  /EI |5  348  12| /A2
   Y2 |6       11| /A1
   Y1 |7       10| /A0
  GND |8        9| Y0
      +----------+

    74352
  8-to-2 line inverting data selector/multiplexer with separate enables.

       +---+--+---+
  /1EN |1  +--+ 16| VCC
    S1 |2       15| /2EN
   1A3 |3       14| S0
   1A2 |4   74  13| 2A3
   1A1 |5  352  12| 2A2
   1A0 |6       11| 2A1
    1Y |7       10| 2A0
   GND |8        9| 2Y
       +----------+

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    74353
  8-to-2 line 3-state inverting data selector/multiplexer.

       +---+--+---+
  /1EN |1  +--+ 16| VCC
    S1 |2       15| /2EN
   1A3 |3       14| S0
   1A2 |4   74  13| 2A3
   1A1 |5  353  12| 2A2
   1A0 |6       11| 2A1
   /1Y |7       10| 2A0
   GND |8        9| /2Y
       +----------+

    74354
  8-to-1 line 3-state data selector/multiplexer with
  address and data latches and complementary outputs.

      +---+--+---+
   A7 |1  +--+ 20| VCC
   A6 |2       19| Y
   A5 |3       18| /Y
   A4 |4       17| OE3
   A3 |5  74   16| /OE2
   A2 |6  354  15| /OE1
   A1 |7       14| A0
   A0 |8       13| A1
  DLE |9       12| A2
  GND |10      11| ALE
      +----------+

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    74356
  8-to-1 line 3-state data selector/multiplexer with address
  latch and data register and complementary outputs.

      +---+--+---+
   A7 |1  +--+ 20| VCC
   A6 |2       19| Y
   A5 |3       18| /Y
   A4 |4       17| OE3
   A3 |5  74   16| /OE2
   A2 |6  356  15| /OE1
   A1 |7       14| A0
   A0 |8       13| A1
  DLE |9       12| A2
  GND |10      11| ALE
      +----------+

    74365
  6-bit 3-state noninverting buffer/line driver.

       +---+--+---+            +---+---*---+
  /OE1 |1  +--+ 16| VCC        |/OE| A | Y |
    A1 |2       15| /OE2       +===+===*===+
    Y1 |3       14| A6         | 1 | X | Z |
    A2 |4   74  13| Y6         | 0 | 0 | 0 |
    Y2 |5  365  12| A5         | 0 | 1 | 1 |
    A3 |6       11| Y5         +---+---*---+
    Y3 |7       10| A4
   GND |8        9| Y4
       +----------+

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    74366
  6-bit 3-state inverting buffer/line driver.

       +---+--+---+            +---+---*---+
  /OE1 |1  +--+ 16| VCC        |/OE| A |/Y |
    A1 |2       15| /OE2       +===+===*===+
   /Y1 |3       14| A6         | 1 | X | Z |
    A2 |4   74  13| /Y6        | 0 | 0 | 1 |
   /Y2 |5  366  12| A5         | 0 | 1 | 0 |
    A3 |6       11| /Y5        +---+---*---+
   /Y3 |7       10| A4
   GND |8        9| /Y4
       +----------+

    74367
  2 / 4-bit 3-state noninverting buffer/line driver.

       +---+--+---+            +---+---*---+
  /1OE |1  +--+ 16| VCC        |/OE| A | Y |
   1A1 |2       15| /2OE       +===+===*===+
   1Y1 |3       14| 2A2        | 1 | X | Z |
   1A2 |4   74  13| 2Y2        | 0 | 0 | 0 |
   1Y2 |5  367  12| 2A1        | 0 | 1 | 1 |
   1A3 |6       11| 2Y1        +---+---*---+
   1Y3 |7       10| 1A4
   GND |8        9| 1Y4
       +----------+

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    74368
  2 / 4-bit 3-state inverting buffer/line driver.

       +---+--+---+            +---+---*---+
  /1OE |1  +--+ 16| VCC        |/OE| A |/Y |
   1A1 |2       15| /2OE       +===+===*===+
  /1Y1 |3       14| 2A2        | 1 | X | Z |
   1A2 |4   74  13| /2Y2       | 0 | 0 | 1 |
  /1Y2 |5  368  12| 2A1        | 0 | 1 | 0 |
   1A3 |6       11| /2Y1       +---+---*---+
  /1Y3 |7       10| 1A4
   GND |8        9| /1Y4
       +----------+

    74373
  8-bit 3-state transparent latch.

      +---+--+---+             +---+---+---*---+
  /OE |1  +--+ 20| VCC         |/OE| LE| D | Q |
   Q1 |2       19| Q8          +===+===+===*===+
   D1 |3       18| D8          | 1 | X | X | Z |
   D2 |4       17| D7          | 0 | 0 | X | - |
   Q2 |5   74  16| Q7          | 0 | 1 | 0 | 0 |
   Q3 |6  373  15| Q6          | 0 | 1 | 1 | 1 |
   D3 |7       14| D6          +---+---+---*---+
   D4 |8       13| D5
   Q4 |9       12| Q5
  GND |10      11| LE
      +----------+

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    74374
  8-bit 3-state D flip-flop.

      +---+--+---+             +---+---+---*---+
  /OE |1  +--+ 20| VCC         |/OE|CLK| D | Q |
   Q1 |2       19| Q8          +===+===+===*===+
   D1 |3       18| D8          | 1 | X | X | Z |
   D2 |4       17| D7          | 0 | / | 0 | 0 |
   Q2 |5   74  16| Q7          | 0 | / | 1 | 1 |
   Q3 |6  374  15| Q6          | 0 |!/ | X | - |
   D3 |7       14| D6          +---+---+---*---+
   D4 |8       13| D5
   Q4 |9       12| Q5
  GND |10      11| CLK
      +----------+

    74375
  Dual 2-bit transparent latches with complementary outputs.

       +---+--+---+
   1D1 |1  +--+ 16| VCC
  /1Q1 |2       15| 2D1
   1Q1 |3       14| /2Q1
   1LE |4   74  13| 2Q1
   1Q2 |5  375  12| 2LE
  /1Q2 |6       11| 2Q2
   1D2 |7       10| /2Q2
   GND |8        9| 2D2
       +----------+

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    74376
  4-bit J-/K flip-flop with reset.

       +---+--+---+            +---+---+---+----*---+---+
  /RST |1  +--+ 16| VCC        | J |/K |CLK|/RST| Q |/Q |
    J1 |2       15| J4         +===+===+===+====*===+===+
   /K1 |3       14| /K4        | X | X | X |  0 | 0 | 1 |
    Q1 |4   74  13| Q4         | 0 | 0 | / |  1 | 0 | 1 |
    Q2 |5  376  12| Q3         | 0 | 1 | / |  1 | - | - |
   /K2 |6       11| /K3        | 1 | 0 | / |  1 |/Q | Q |
    J2 |7       10| J3         | 1 | 1 | / |  1 | 1 | 0 |
   GND |8        9| CLK        | X | X |!/ |  1 | - | - |
       +----------+            +---+---+---+----*---+---+

    74377
  8-bit D flip-flop with clock enable.

         +---+--+---+          +----+---+---*---+
  /CLKEN |1  +--+ 20| VCC      |/CEN|CLK| D | Q |
      Q1 |2       19| Q8       +====+===+===*===+
      D1 |3       18| D8       |  1 | X | X | - |
      D2 |4       17| D7       |  0 | / | 0 | 0 |
      Q2 |5   74  16| Q7       |  0 | / | 1 | 1 |
      Q3 |6  377  15| Q6       |  0 |!/ | X | - |
      D3 |7       14| D6       +----+---+---*---+
      D4 |8       13| D5
      Q4 |9       12| Q5
     GND |10      11| CLK
         +----------+

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    74378
  6-bit D flip-flop with clock enable.

       +---+--+---+          +----+---+---*---+
  /CLKEN |1  +--+ 16| VCC      |/CEN|CLK| D | Q |
      Q1 |2       15| Q6       +====+===+===*===+
      D1 |3       14| D6       |  1 | X | X | - |
      D2 |4   74  13| D5       |  0 | / | 0 | 0 |
      Q2 |5  378  12| Q5       |  0 | / | 1 | 1 |
      D3 |6       11| D4       |  0 |!/ | X | - |
      Q3 |7       10| Q4       +----+---+---*---+
     GND |8        9| CLK
         +----------+

    74379
  6-bit D flip-flop with clock enable and complementary outputs.

         +---+--+---+          +----+---+---*---+---+
  /CLKEN |1  +--+ 16| VCC      |/CEN|CLK| D | Q |/Q |
      Q1 |2       15| Q4       +====+===+===*===+===+
     /Q1 |3       14| /Q4      |  1 | X | X | - | - |
      D1 |4   74  13| D4       |  0 | / | 0 | 0 | 1 |
      D2 |5  379  12| D3       |  0 | / | 1 | 1 | 0 |
     /Q2 |6       11| /Q3      |  0 |!/ | X | - | - |
      Q2 |7       10| Q3       +----+---+---*---+---+
     GND |8        9| CLK
         +----------+

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    74381
  4-bit 8-function arithmetic logic unit (ALU)

      +---+--+---+
   A1 |1  +--+ 20| VCC
   B1 |2       19| A2
   A0 |3       18| B2
   B0 |4       17| A3
   S0 |5   74  16| B3
   S1 |6  381  15| CIN
   S2 |7       14| /P
   F0 |8       13| /G
   F1 |9       12| F3
  GND |10      11| F2
      +----------+

    74382
  4-bit 8-function arithmetic logic unit ( ALU ) with ripple carry and overflow outputs.

      +---+--+---+
   A1 |1  +--+ 20| VCC
   B1 |2       19| A2
   A0 |3       18| B2
   B0 |4       17| A3
   S0 |5   74  16| B3
   S1 |6  382  15| CIN
   S2 |7       14| COUT
   F0 |8       13| OVR
   F1 |9       12| F3
  GND |10      11| F2
      +----------+

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    74385
  Quad serial adder / subtractor. Contains four independent
  adder/subtractor elements with common clock and carry reset.

        +---+--+---+
    CLK |1  +--+ 20| VCC
     1S |2       19| 4S
  1S//A |3       18| 4S//A
     1B |4       17| 4B
     1A |5   74  16| 4A
     2A |6  385  15| 3A
     2B |7       14| 3B
  2S//A |8       13| 3S//A
     2S |9       12| 3S
    GND |10      11| RST
        +----------+

    74386
  Quad 2-input XOR gates.

      +---+--+---+             +---+---*---+                    _   _
   1A |1  +--+ 14| VCC         | A | B | Y |       Y = A+B = (A.B)+(A.B)
   1B |2       13| 4B          +===+===*===+
   1Y |3  74   12| 4A          | 0 | 0 | 0 |
   2Y |4  386  11| 4Y          | 0 | 1 | 1 |
   2A |5       10| 3Y          | 1 | 0 | 1 |
   2B |6        9| 3B          | 1 | 1 | 0 |
  GND |7        8| 3A          +---+---*---+
      +----------+

    74390
  Dual 4-bit asynchronous decade counters with
  separate /2 and /5 sections and reset.

         +---+--+---+
  /1CLK0 |1  +--+ 16| VCC
    1RST |2       15| /2CLK0
     1Q0 |3       14| 2RST
  /1CLK1 |4   74  13| 2Q0
     1Q1 |5  390  12| /2CLK1
     1Q2 |6       11| 2Q1
     1Q3 |7       10| 2Q2
     GND |8        9| 2Q3
         +----------+

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    74393
  Dual 4-bit asynchronous binary counters with reset.

        +---+--+---+
  /1CLK |1  +--+ 14| VCC
   1RST |2       13| /2CLK
    1Q0 |3   74  12| 2RST
    1Q1 |4  393  11| 2Q0
    1Q2 |5       10| 2Q1
    1Q3 |6        9| 2Q2
    GND |7        8| 2Q3
        +----------+

    74395
  4-bit 3-state universal shift register with load and asynchronous reset.

         +---+--+---+
    /RST |1  +--+ 16| VCC
       D |2       15| Y0
      P0 |3       14| Y1
      P1 |4   74  13| Y2
      P2 |5  395  12| Y3
      P3 |6       11| Q3
  LD//SH |7       10| CLK
     GND |8        9| /OE
         +----------+

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    74398
  8-to-4 line data selector/multiplexer with output registers and complementary outputs.

      +---+--+---+
    S |1  +--+ 20| VCC
   1Y |2       19| 4Y
  /1Y |3       18| /4Y
  1A0 |4       17| 4A0
  1A1 |5   74  16| 4A1
  2A1 |6  398  15| 3A1
  2A0 |7       14| 3A0
  /2Y |8       13| /3Y
   2Y |9       12| 3Y
  GND |10      11| CLK
      +----------+

        74399
  8-to-4 line inverting data selector/multiplexer with output registers.

      +---+--+---+
    S |1  +--+ 16| VCC
   1Y |2       15| 4Y
  1A0 |3       14| 4A0
  1A1 |4   74  13| 4A1
  2A1 |5  399  12| 3A1
  2A0 |6       11| 3A0
   2Y |7       10| 3Y
  GND |8        9| CLK
      +----------+


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This page was upgraded January 31st 2013