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Motorola Electronic Components Datasheet

SN74LS797 Datasheet

TRI-STATE OCTAL BUFFERS

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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
HXX
XHX
L LH
LLL
Z
Z
H
L
LS796
INPUTS OUTPUT
G1 G2 A
Y
HXX
XHX
L LH
LLL
Z
Z
L
H
LS797
INPUTS OUTPUT
GA
Y
HX
LH
LL
Z
H
L
LS798
INPUTS OUTPUT
GA
Y
HX
LH
LL
Z
L
H
GUARANTEED OPERATING RANGES
Symbol
Parameter
VCC
Supply Voltage
TA Operating Ambient Temperature Range
IOH Output Current — High
IOL Output Current — Low
54
74
54
74
54
74
54
74
SN54/74LS795
SN54/74LS796
SN54/74LS797
SN54/74LS798
TRI-STATE OCTAL BUFFERS
LOW POWER SCHOTTKY
20
1
20
1
20
1
J SUFFIX
CERAMIC
CASE 732-03
N SUFFIX
PLASTIC
CASE 738-03
DW SUFFIX
SOIC
CASE 751D-03
ORDERING INFORMATION
SN54LSXXXJ Ceramic
SN74LSXXXN Plastic
SN74LSXXXDW SOIC
Min Typ Max Unit
4.5 5.0 5.5
4.75 5.0 5.25
V
– 55 25 125 °C
0 25 70
– 2.6
– 5.0
mA
8.0 mA
16
FAST AND LS TTL DATA
5-609


Motorola Electronic Components Datasheet

SN74LS797 Datasheet

TRI-STATE OCTAL BUFFERS

No Preview Available !

LOGIC DIAGRAMS
SN54/74LS795 SN54/74LS796
SN54/74LS797 SN54/74LS798
VCC G2 A8 Y8 A7 Y7 A6 Y6 A5 Y5
20 19 18 17 16 15 14 13 12 11
VCC G2 A8 Y8 A7 Y7 A6 Y6 A5 Y5
20 19 18 17 16 15 14 13 12 11
1 2 3 4 5 6 7 8 9 10
G1 A1 Y1 A2 Y2 A3 Y3 A4 Y4 GND
SN54/74LS795
VCC G2 A8 Y8 A7 Y7 A6 Y6 A5 Y5
20 19 18 17 16 15 14 13 12 11
1 2 3 4 5 6 7 8 9 10
G1 A1 Y1 A2 Y2 A3 Y3 A4 Y4 GND
SN54/74LS796
VCC G2 A8 Y8 A7 Y7 A6 Y6 A5 Y5
20 19 18 17 16 15 14 13 12 11
1 2 3 4 5 6 7 8 9 10
G1 A1 Y1 A2 Y2 A3 Y3 A4 Y4 GND
SN54/74LS797
1 2 3 4 5 6 7 8 9 10
G1 A1 Y1 A2 Y2 A3 Y3 A4 Y4 GND
SN54/74LS798
FAST AND LS TTL DATA
5-610


Part Number SN74LS797
Description TRI-STATE OCTAL BUFFERS
Maker Motorola
Total Page 5 Pages
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2 SN74LS796 TRI-STATE OCTAL BUFFERS
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3 SN74LS797 TRI-STATE OCTAL BUFFERS
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4 SN74LS798 TRI-STATE OCTAL BUFFERS
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