SN74LS257 ON Semiconductor, SN74LS257 Datasheet - Page 3

• Manufacturer Part Number: SN74LS257
• Description: LOW POWER SCHOTTKY
• Manufacturer: ON Semiconductor

V
GND = PIN 8
CC
= PIN NUMBERS
= PIN 16
E
E
0
0
15
15
I
I
0a
0a
2
2
Z
Z
a
a
4
4
I
I
1a
1a
3
3
SN74LS257B SN74LS258B
I
I
0b
0b
5
5
LOGIC DIAGRAMS
http://onsemi.com
Z
Z
SN74LS257B
b
SN74LS258B
b
7
7
I
I
1b
1b
6
6
3
I
I
0c
0c
14
14
Z
Z
c
c
12
12
I
I
1c
1c
13
13
I
I
0d
0d
11
11
Z
Z
d
d
9
9
I
I
1d
1d
10
10
S
S
1
1