MOTOROLA SN74LS258BN, SN74LS258BD, SN74LS258BDR2, SN74LS258BMEL, SN74LS258BML1 Datasheet

 Semiconductor Components Industries, LLC, 1999

December, 1999 – Rev. 6

1 Publication Order Number:

SN74LS257B/D

SN74LS257B SN74LS258B

Quad 2-Input Multiplexer
with 3-State Outputs

The LSTTL /MSI SN74LS257B and the SN74LS258B are Quad
2-Input Multiplexers with 3-state outputs. Four bits of data from two
sources can be selected using a Common Data Select input. The four
outputs present the selected data in true (non-inverted) form. The
outputs may be switched to a high impedance state with a HIGH on the
common Output Enable (E

O

) Input, allowing the outputs to interface
directly with bus oriented systems. It is fabricated with the Schottky
barrier diode process for high speed and is completely compatible with
all ON Semiconductor TTL families.

• Schottky Process For High Speed

• Multiplexer Expansion By Tying Outputs T ogether

• Non-Inverting 3-State Outputs

• Input Clamp Diodes Limit High Speed Termination Effects

• Special Circuitry Ensures Glitch Free Multiplexing

• ESD > 3500 Volts

GUARANTEED OPERATING RANGES

Symbol Parameter Min Typ Max Unit

V

CC

Supply Voltage 4.75 5.0 5.25 V

T

A

Operating Ambient

T emperature Range

0 25 70 °C

I

OH

Output Current – High –2.6 mA

I

OL

Output Current – Low 24 mA

LOW

POWER

SCHOTTKY

Device Package Shipping

ORDERING INFORMATION

SN74LS257BN 16 Pin DIP 2000 Units/Box
SN74LS257BD 16 Pin

SOIC

D SUFFIX

CASE 751B

http://onsemi.com

2500/Tape & Reel

PLASTIC
N SUFFIX
CASE 648

16

1

16

1

SN74LS258BN 16 Pin DIP 2000 Units/Box
SN74LS258BD 16 Pin

2500/Tape & Reel

SN74LS257B SN74LS258B

http://onsemi.com

2

CONNECTION DIAGRAM DIP (TOP VIEW)

NOTE:
The Flatpak version has the same
pinouts (Connection Diagram) as
the Dual In-Line Package.

14 13 12 11 10 9

123456

7

16 15

8

V

CC

S

E

0I0cI1cZc

I

1d

I

0d

Z

d

I0aI

1aZaI0bI1b

ZbGND

SN74LS257B

SN74LS258B

VCC = PIN 16
GND = PIN 8

14 13 12 11 10 9

123456

7

16 15

8

V

CC

S

E

0I0cI1cZc

I

1d

I

0d

Z

d

I0aI

1aZaI0bI1b

ZbGND

SN74LS257B SN74LS258B

http://onsemi.com

3

LOGIC DIAGRAMS

SN74LS257B

E

0

I

0a

I

1a

I

0b

I

1b

I

0c

I

1c

I

0d

I

1d

S

Z

a

Z

b

Z

c

Z

d

SN74LS258B

VCC = PIN 16
GND = PIN 8

= PIN NUMBERS

E

0

I

0a

I

1a

I

0b

I

1b

I

0c

I

1c

I

0d

I

1d

S

Z

a

Z

b

Z

c

Z

d

14

1

2

6

7

3

4

5

9

11

12

10

13

15

14

1

2

6

3

5

11

10

13

15

7

4 912