SN74LS257D Motorola, SN74LS257D Datasheet - Page 2

• Manufacturer Part Number: SN74LS257D
• Description: QUAD 2-INPUT MULTIPLEXER WITH 3-STATE OUTPUTS
• Manufacturer: Motorola

LOGIC DIAGRAMS
V CC = PIN 16
GND = PIN 8
= PIN NUMBERS
E 0
E 0
15
15
I 0a
I 0a
2
2
SN54/74LS257B
Z a
Z a
4
4
I 1a
I 1a
3
3
I 0b
I 0b
FAST AND LS TTL DATA
5
5
SN54 / 74LS257B
SN54 / 74LS258B
Z b
Z b
7
7
I 1b
I 1b
5-428
6
6
D
SN54/74LS258B
I 0c
I 0c
14
14
Z c
Z c
12
12
I 1c
I 1c
13
13
I 0d
I 0d
11
11
Z d
Z d
9
9
I 1d
I 1d
10
10
S
S
1
1