Pin Assignments
19
26
HEX SCHMITT-TRIGGER INVERTERS
QUADRUPLE 2-INPUT HIGH-VOLTAGE
positive logic:
Y = A
INTERFACE POSITIVE-NAND GATES
positive logic:
Y = AB
VCC
4B
4A
4Y
3B
3A
3Y
VCC
6A
6Y
5A
5Y
4A
4Y
14 13 12 11 10
9
8
14 13 12 11 10
9
8
1
1A
2
1Y
3
2A
4
2Y
5
3A
6
3Y
7
GND
1
1A
2
1B
3
1Y
4
2A
5
2B
6
2Y
7
GND
See page 244
See page 247
20
27
DUAL 4-INPUT
POSITIVE-NAND GATES
positive logic:
Y = A•B•C•D
TRIPLE 3-INPUT
POSITIVE-NOR GATES
positive logic:
Y = A + B + C
VCC
2D
2C
NC
2B
2A
2Y
VCC
1C
1Y
3C
3B
3A
3Y
14 13 12 11 10
9
8
14 13 12 11 10
9
8
1
1A
2
1B
3
NC
4
1C
5
1D
6
1Y
7
GND
1
1A
2
1B
3
2A
4
2B
5
2C
6
2Y
7
GND
NC-No internal connection
See page 245
See page 247
21
30
DUAL 4-INPUT
POSITIVE-AND GATES
positive logic:
Y = A•B•C•D
8-INPUT POSITIVE-NAND GATES
positive logic:
Y = A•B•C•D•E•F•G•H
VCC
2D
2C
NC
2B
2A
2Y
VCC
NC
H
G
NC
NC
Y
14 13 12 11 10
9
8
14 13 12 11 10
9
8
1
1A
2
1B
3
NC
4
1C
5
1D
6
1Y
7
GND
1
A
2
B
3
C
4
D
5
E
6
F
7
GND
NC-No internal connection
NC-No internal connection
See page 246
See page 248
25
31
DUAL 4-INPUT POSITIVE-NOR GATES
WITH STROBE
DELAY ELEMENTS
positive logic:
Y = G (A + B + C + D)
STROBE
2G
VCC
2D
2C
2B
2A
2Y
VCC
6A
6Y
5A
5Y
4B
4A
4Y
14 13 12 11 10
9
8
16 15 14 13 12 11 10
9
1
1A
2
3
4
5
1D
6
1Y
7
GND
1
1A
2
1Y
3
2A
4
2Y
5
3A
6
3B
7
3Y
8
GND
1B STROBE 1C
1G
See page 246
See page 248
163
TI [ TEXAS INSTRUMENTS ]
