OCTAL BUFFERS. SN54LS795 Datasheet

SN54LS795 BUFFERS. Datasheet pdf. Equivalent

SN54LS795 Datasheet
Recommendation SN54LS795 Datasheet
Part SN54LS795
Description TRI-STATE OCTAL BUFFERS
Feature SN54LS795; TRI-STATE OCTAL BUFFERS The SN54 / 74LS795 thru SN54 / 74LS798 device types provide a second source .
Manufacture Motorola Inc
Datasheet
Download SN54LS795 Datasheet




Motorola  Inc SN54LS795
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  Inc SN54LS795
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



Motorola  Inc SN54LS795
SN54/74LS795 THRU SN54/74LS798
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Limits
Symbol
Parameter
Min Typ Max Unit
Test Conditions
VIH Input HIGH Voltage
2.0
V
Guaranteed Input HIGH Voltage for
All Inputs
VIL Input LOW Voltage
54
74
0.7 Guaranteed Input LOW Voltage for
0.8 V All Inputs
VIK
VOH
Input Clamp Diode Voltage
Output HIGH Voltage
– 0.65 – 1.5
V VCC = MIN, IIN = – 18 mA
54 2.5 3.5
74 2.7 3.5
V
VCC = MIN, IOH = MAX
V
VOL
Output LOW Voltage
54, 74
74
0.25 0.4
0.35 0.5
V IOL = 8.0 mA
V IOL = 16 mA
VCC = VCC MIN,
VIN = VIL or VIH
per Truth Table
IOZH
IOZL
IIH
IIL
Output Off Current — HIGH
Output Off Current — LOW
Input HIGH Current
Input LOW Current
A Input, Both G at 0.4 V
G Input
20
– 20
20
– 0.1
µA VCC = MAX, VOUT = 2.7 V
µA VCC = MAX, VOUT = 0.4 V
µA VCC = MAX, VIN = 2.7 V
mA VCC = MAX, VIN = 7.0 V
– 0.4
– 0.4
mA VCC = MAX, VIN = 0.4 V
A Input, Both G at 2.0 V
– 20
IOS Short Circuit Current (Note 1)
– 30
Power Supply
LS795/LS797
ICC Current
LS795/LS798
–130
26
21
Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.
µA VCC = MAX, VIN = 0.5 V
mA VCC = MAX
mA
VCC = MAX
mA
AC CHARACTERISTICS (TA = 25°C)
Symbol
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
Parameter
Propagation Delay
Output Enable Time
Output Disable Time
Limits
LS795 / LS797
Min Typ Max
11 16
15 22
LS796 / LS798
Min Typ Max
6.0 10
13 17
16 25
13 20
17 27
16 25
13 20
19 27
13 20
18 27
Unit
ns
ns
ns
Test Conditions
VCC = 5.0 V
CL = 15 pF
CL = 5.0 pF
FAST AND LS TTL DATA
5-611







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