7400 series TTL IC's: 7450...7499
7450-7499 74LSxxx, 74HCxxx, 74AHCxxx, 74Fxxx, 74ALSxxx
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. Features a reset pin that is common to all three counters.
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.
Pinouts of IC and Electronic Devices
7450-7499 74LSxxx, 74HCxxx, 74AHCxxx, 74Fxxx, 74ALSxxx
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|
+----------+
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. 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
+----------+
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 | - | - |
+--------+--------+---+----+----*---+---+
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 | - | - |
+---+---+----+----*---+---+
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 | - | - |
+---+---+---+----+----*---+---+
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
+----------+
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 +---+---*---+
+----------+
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|
+----------+
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
+----------+
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
+----------+
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
+----------+
Pinouts of IC and Electronic Devices
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