= = = = = = = = = = =7451-7497

   LM / CD 7400 series TTL  IC's:  7451 to 7497



 . . . . . . . .  . . . . . . . .
 




      Email us :sales@unitechelectronics.com

The TTL building blocks 7451 and 74LS51 series of TTL logic IC's. 

--------------------------------------------------------------------------

** Click here for TOP of page **

7451

2-wide 2-input and 2-wide 3-input AND-NOR gates. 
    +---+--+---+                  _____________________
 1A |1  +--+ 14| VCC        /1Y = (1A.1B.1C)+(1D.1E.1F)
 2A |2       13| 1B
 2B |3       12| 1C               _______________
 2C |4  7451 11| 1D         /2Y = (2A.2B)+(2C.2D)
 2D |5       10| 1E
/2Y |6        9| 1F
GND |7        8| /1Y
    +----------+

7454

4-wide 2/3-input AND-NOR gate. 
    +---+--+---+                 ___________________________
  A |1  +--+ 14| VCC        /Y = (A.B)+(C.D.E)+(F.G.H)+(J.K)
  B |2       13| K
  C |3       12| J
  D |4  7454 11| H
  E |5       10| G
 /Y |6        9| F
GND |7        8|
    +----------+

** Click here for TOP of page **

7455

2-wide 4-input AND-NOR gate. 
    +---+--+---+                 ___________________
  A |1  +--+ 14| VCC        /Y = (A.B.C.D)+(E.F.G.H)
  B |2       13| H
  C |3       12| G
  D |4  7455 11| F
    |5       10| E
    |6        9|
GND |7        8| /Y
    +----------+

7457

Frequency divider.
Can generate one second timing pulses from 60 Hz. Two '57 devices
may be interconnected to give frequency division of 3600 to 1, 1800 to 1, 900 to 1, etc.
This chip features a reset pin that is common to all three counters. 
     +---+--+---+
CLKB |1  +--+  8| QC
 VCC |2        7| QB
  QA |3  7457  6| RST
 GND |4        5| CLKA
     +----------+

** Click here for TOP of page **

7458

2-wide 2-input and 2-wide 3-input AND-OR gates. 
    +---+--+---+
 1A |1  +--+ 14| VCC         1Y = (1A.1B.1C)+(1D.1E.1F)
 2A |2       13| 1B
 2B |3       12| 1C
 2C |4  7458 11| 1D          2Y = (2A.2B)+(2C.2D)
 2D |5       10| 1E
 2Y |6        9| 1F
GND |7        8| 1Y
    +----------+

7472

J-K flip-flop with triple ANDed J an K inputs, set and reset. 

     +---+--+---+            +--------+--------+---+----+----*---+---+
     |1  +--+ 14| VCC        |J1.J2.J3|K1.K2.K3|CLK|/SET|/RST| Q |/Q |
/RST |2       13| /SET       +========+========+===+====+====*===+===+
  J1 |3       12| CLK        |    X   |    X   | X |  0 |  0 | ? | ? |
  J2 |4  7472 11| K3         |    X   |    X   | X |  0 |  1 | 1 | 0 |
  J3 |5       10| K2         |    X   |    X   | X |  1 |  0 | 0 | 1 |
  /Q |6        9| K1         |    0   |    0   | / |  1 |  1 | - | - |
 GND |7        8| Q          |    0   |    1   | / |  1 |  1 | 0 | 1 |
     +----------+            |    1   |    0   | / |  1 |  1 | 1 | 0 |
                             |    1   |    1   | / |  1 |  1 |/Q | Q |
                             |    X   |    X   |!/ |  1 |  1 | - | - |
                             +--------+--------+---+----+----*---+---+

** Click here for TOP of page **

7473

Dual negative-edge-triggered J-K flip-flop with reset. 

      +---+--+---+           +---+---+----+----*---+---+
/1CLK |1  +--+ 14| 1J        | J | K |/CLK|/RST| Q |/Q |
/1RST |2       13| /1Q       +===+===+====+====*===+===+
   1K |3       12| 1Q        | X | X |  X |  0 | 0 | 1 |
  VCC |4  7473 11| GND       | 0 | 0 |  \ |  1 | - | - |
/2CLK |5       10| 2K        | 0 | 1 |  \ |  1 | 0 | 1 |
/2RST |6        9| 2Q        | 1 | 0 |  \ |  1 | 1 | 0 |
   2J |7        8| /2Q       | 1 | 1 |  \ |  1 |/Q | Q |
      +----------+           | X | X | !\ |  1 | - | - |
                             +---+---+----+----*---+---+

7474

Dual D flip-flop with set and reset. 
      +---+--+---+           +---+---+----+----*---+---+
/1RST |1  +--+ 14| VCC       | D |CLK|/SET|/RST| Q |/Q |
   1D |2       13| /2RST     +===+===+====+====*===+===+
 1CLK |3       12| 2D        | X | X |  0 |  0 | 1 | 1 |
/1SET |4  7474 11| 2CLK      | X | X |  0 |  1 | 1 | 0 |
   1Q |5       10| /2SET     | X | X |  1 |  0 | 0 | 1 |
  /1Q |6        9| 2Q        | 0 | / |  1 |  1 | 0 | 1 |
  GND |7        8| /2Q       | 1 | / |  1 |  1 | 1 | 1 |
      +----------+           | X |!/ |  1 |  1 | - | - |
                             +---+---+----+----*---+---+

** Click here for TOP of page **

7475

Dual 2-bit transparent latches with complementary outputs. 
     +---+--+---+
/1Q1 |1  +--+ 16| 1Q1
 1D1 |2       15| 1Q2
 1D2 |3       14| /1Q2
 2LE |4       13| 1LE
 VCC |5  7475 12| GND
 2D1 |6       11| /2Q1
 2D2 |7       10| 2Q1
/2Q2 |8        9| 2Q2
     +----------+

7476

Dual J-K flip-flops with set and reset. 
      +---+--+---+           +---+---+---+----+----*---+---+
 1CLK |1  +--+ 16| 1K        | J | K |CLK|/SET|/RST| Q |/Q |
/1SET |2       15| 1Q        +===+===+===+====+====*===+===+
/1RST |3       14| /1Q       | X | X | X |  0 |  0 | 0 | 0 |
   1J |4       13| GND       | X | X | X |  0 |  1 | 1 | 0 |
  VCC |5  7476 12| 2K        | X | X | X |  1 |  0 | 0 | 1 |
 2CLK |6       11| 2Q        | 0 | 0 | / |  1 |  1 | - | - |
/2SET |7       10| /2Q       | 0 | 1 | / |  1 |  1 | 0 | 1 |
/2RST |8        9| 2J        | 1 | 0 | / |  1 |  1 | 1 | 0 |
      +----------+           | 1 | 1 | / |  1 |  1 |/Q | Q |
                             | X | X |!/ |  1 |  1 | - | - |
                             +---+---+---+----+----*---+---+

** Click here for TOP of page **

7478

Dual negative-edge-triggered J-K flip-flops with common clock, set and common reset. 
      +---+--+---+           +---+---+----+----+----*---+---+
 /CLK |1  +--+ 14| 1K        | J | K |/CLK|/SET|/RST| Q |/Q |
/1SET |2       13| 1Q        +===+===+====+====+====*===+===+
   1J |3       12| /1Q       | X | X |  X |  0 |  0 | ? | ? |
  VCC |4  7478 11| GND       | X | X |  X |  0 |  1 | 1 | 0 |
 /RST |5       10| 2J        | X | X |  X |  1 |  0 | 0 | 1 |
/2SET |6        9| /2Q       | 0 | 0 |  \ |  1 |  1 | - | - |
   2K |7        8| 2Q        | 0 | 1 |  \ |  1 |  1 | 0 | 1 |
      +----------+           | 1 | 0 |  \ |  1 |  1 | 1 | 0 |
                             | 1 | 1 |  \ |  1 |  1 |/Q | Q |
                             | X | X | !\ |  1 |  1 | - | - |
                             +---+---+----+----+----*---+---+

7483

4-bit binary full adder with fast carry. 
    +---+--+---+
 A4 |1  +--+ 16| B4          S=A+B+CIN
 S3 |2       15| S4
 A3 |3       14| COUT
 B3 |4       13| CIN
VCC |5  7483 12| GND
 S2 |6       11| B1
 B2 |7       10| A1
 A2 |8        9| S1
    +----------+

** Click here for TOP of page **

7485

4-bit noninverting magnitude comparator with cascade inputs. 
     +---+--+---+
  B3 |1  +--+ 16| VCC
IA<B |2       15| A3
IA=B |3       14| B2
IA>B |4       13| A2
OA>B |5  7485 12| A1
OA=B |6       11| B1
OA<B |7       10| A0
 GND |8        9| B0
     +----------+

7486

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       12| 4A          | 0 | 0 | 0 |
 2A |4  7486 11| 4Y          | 0 | 1 | 1 |
 2B |5       10| 3B          | 1 | 0 | 1 |
 2Y |6        9| 3A          | 1 | 1 | 0 |
GND |7        8| 3Y          +---+---*---+
    +----------+

** Click here for TOP of page **

7490

4-bit asynchronous decade counter with /2 and /5 sections, set(9) and reset. 
      +---+--+---+
/CLK1 |1  +--+ 14| /CLK0
 RST1 |2       13|
 RST2 |3       12| Q0
      |4  7490 11| Q3
  VCC |5       10| GND
 SET1 |6        9| Q1
 SET2 |7        8| Q2
      +----------+

7491

8-bit serial-in serial-out shift register with two AND gated serial inputs and complementary outputs. 
    +---+--+---+
    |1  +--+ 14| /Q7
    |2       13| Q7
    |3       12| D
    |4  7491 11| E
VCC |5       10| GND
    |6        9| CLK
    |7        8|
    +----------+

** Click here for TOP of page **

7492

4-bit asynchronous divide-by-twelve counter with /2 and /6 sections and reset. 
      +---+--+---+
/CLK1 |1  +--+ 14| /CLK0
      |2       13|
      |3       12| Q0
      |4  7492 11| Q3
  VCC |5       10| GND
 RST1 |6        9| Q1
 RST2 |7        8| Q2
      +----------+

7493

4-bit asynchronous binary counter with /2 and /8 sections and reset. 
      +---+--+---+
/CLK1 |1  +--+ 14| /CLK0
 RST1 |2       13|
 RST2 |3       12| Q0
      |4  7493 11| Q3
  VCC |5       10| GND
      |6        9| Q1
      |7        8| Q2
      +----------+

** Click here for TOP of page **

7495

4-bit universal shift register with separate shift and parallel-load clocks. 
       +---+--+---+
     D |1  +--+ 14| VCC
    P0 |2       13| Q0
    P1 |3       12| Q1
    P2 |4  7495 11| Q2
    P3 |5       10| Q3
LD//SH |6        9| SHCLK
   GND |7        8| LDCLK
       +----------+

7496

5-bit shift register with asynchronous reset and asynchronous preset inputs. 
    +---+--+---+
CLK |1  +--+ 16| /RST
 P0 |2       15| Q0
 P1 |3       14| Q1
 P2 |4       13| Q2
VCC |5  7496 12| GND
 P3 |6       11| Q3
 P4 |7       10| Q4
 PE |8        9| D
    +----------+

** Click here for TOP of page **

7497

6-bit synchronous binary rate multiplier.
Can perform fixed-rate or variable-rate frequency division.
Output frequency is equal to input frequency multiplied by the rate input M and divided by 64. 
      +---+--+---+
   B1 |1  +--+ 16| VCC
   B4 |2       15| B3
   B5 |3       14| B2
   B0 |4       13| RST
    Z |5  7497 12| U/CAS
    Y |6       11| ENin
ENout |7       10| STRB
  GND |8        9| CLK
      +----------+


 . . . . . . . .  . . . . . . . .
" DISCLAIMER "

     We believe the above information to be correct,  however typographical errors 
     can occur and it is for this very reason we provide the above information "as is" 
     with "no Warranty" as to "correctness" nor to its "accuracy".  Please, always 
     check  with your "own data books"  or via a "Google" search on the net.
                                                   E. &. O. E.