5-609

FAST AND LS TTL DATA

TRI-STATE OCTAL BUFFERS

The SN54 / 74LS795 thru SN54 / 74LS798 device types provide a second

source for the 71 / 81LS95 thru 71 / 81LS98 series. These devices are octal

low power Schottky versions of the 70/8095 thru 70/8098 3-STATE Hex

Buffers. The LS795 and LS797 are noninverting and the LS796 and LS798

are inverting functions. On each buffer, one of the two inputs is used as a

control line to gate the output into the high impedance state, while the other

input passes the data through the buffer. On the LS795 and LS796 access is

through a 2-input NOR gate, with all eight 3-STATE enable lines common. On

the LS797 and LS798, four buffers are enabled from one common line and the

other four buffers from another common line. On all device types the 3-STATE

condition is achieved by applying a high logic level to the enable pins.

TRUTH TABLES

LS795

INPUTS

OUTPUT

G1

G2

A

Y

H

X

L

L

X

H

L

L

X

X

H

L

Z

Z

H

L

LS796

INPUTS

OUTPUT

G1

G2

A

Y

H

X

L

L

X

H

L

L

X

X

H

L

Z

Z

L

H

LS797

INPUTS

OUTPUT

G

A

Y

H

L

L

X

H

L

Z

H

L

LS798

INPUTS

OUTPUT

G

A

Y

H

L

L

X

H

L

Z

L

H

GUARANTEED OPERATING RANGES

Symbol

Parameter

Min

Typ

Max

Unit

VCC

Supply Voltage

54

74

4.5

4.75

5.0

5.0

5.5

5.25

V

TA

Operating Ambient Temperature Range

54

74

– 55

0

25

25

125

70

°C

IOH

Output Current — High

54

74

– 2.6

– 5.0

mA

IOL

Output Current — Low

54

74

8.0

16

mA

SN54/74LS795

SN54/74LS796

SN54/74LS797

SN54/74LS798

TRI-STATE OCTAL BUFFERS

LOW POWER SCHOTTKY

ORDERING INFORMATION

SN54LSXXXJ

Ceramic

SN74LSXXXN

Plastic

SN74LSXXXDW SOIC

20

1

J SUFFIX

CERAMIC

CASE 732-03

20

1

N SUFFIX

PLASTIC

CASE 738-03

20

1

DW SUFFIX

SOIC

CASE 751D-03