SN54LS797JD [MOTOROLA]
Bus Driver, LS Series, 1-Func, 8-Bit, True Output, TTL, CDIP20, CERAMIC, DIP-20;
| 型号： | SN54LS797JD |
| 厂家： | 
MOTOROLA |
| 描述： | Bus Driver, LS Series, 1-Func, 8-Bit, True Output, TTL, CDIP20, CERAMIC, DIP-20 |
| 文件： | 总5页 (文件大小：173K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SN54/74LS795
SN54/74LS796
SN54/74LS797
SN54/74LS798
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.
TRI-STATE OCTAL BUFFERS
LOW POWER SCHOTTKY
TRUTH TABLES
J SUFFIX
CERAMIC
CASE 732-03
LS795
LS796
20
INPUTS
G1 G2
OUTPUT
Y
INPUTS
G1 G2
OUTPUT
Y
1
A
A
H
X
L
X
H
L
X
X
H
L
Z
Z
H
L
H
X
L
X
H
L
X
X
H
L
Z
Z
L
N SUFFIX
PLASTIC
CASE 738-03
L
L
L
L
H
20
1
LS797
LS798
DW SUFFIX
SOIC
CASE 751D-03
INPUTS OUTPUT
INPUTS OUTPUT
20
1
G
A
Y
G
A
Y
H
L
L
X
H
L
Z
H
L
H
L
L
X
H
L
Z
L
H
ORDERING INFORMATION
SN54LSXXXJ
Ceramic
SN74LSXXXN Plastic
SN74LSXXXDW SOIC
GUARANTEED OPERATING RANGES
Symbol
Parameter
Min
Typ
Max
Unit
V
CC
Supply Voltage
54
74
4.5
4.75
5.0
5.0
5.5
5.25
V
T
Operating Ambient Temperature Range
Output Current — High
54
74
–55
0
25
25
125
70
°C
A
I
I
54
74
–2.6
–5.0
mA
mA
OH
Output Current — Low
54
74
8.0
16
OL
FAST AND LS TTL DATA
5-609
SN54/74LS795 • SN54/74LS796
SN54/74LS797 • SN54/74LS798
LOGIC DIAGRAMS
SN54/74LS796
SN54/74LS795
SN54/74LS797
SN54/74LS798
FAST AND LS TTL DATA
5-610
SN54/74LS795 THRU SN54/74LS798
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Limits
Min
Typ
Max
Symbol
Parameter
Input HIGH Voltage
Unit
Test Conditions
Guaranteed Input HIGH Voltage for
All Inputs
V
2.0
V
IH
54
74
0.7
0.8
Guaranteed Input LOW Voltage for
All Inputs
V
V
V
Input LOW Voltage
V
IL
Input Clamp Diode Voltage
Output HIGH Voltage
–0.65
3.5
–1.5
V
V
V
V
V
I
= MIN, I = –18 mA
IN
IK
CC
54
74
2.5
2.7
= MIN, I
OH
= MAX
OH
CC
3.5
V
V
= V MIN,
CC
54, 74
74
0.25
0.35
0.4
0.5
V
V
= 8.0 mA
= 16 mA
CC
OL
= V or V
IL IH
V
OL
Output LOW Voltage
IN
per Truth Table
I
OL
I
I
Output Off Current — HIGH
Output Off Current — LOW
20
–20
20
µA
µA
µA
mA
V
V
V
V
= MAX, V
= MAX, V
= 2.7 V
= 0.4 V
OZH
CC
CC
CC
CC
OUT
OZL
OUT
= MAX, V = 2.7 V
IN
I
Input HIGH Current
IH
IL
–0.1
= MAX, V = 7.0 V
IN
Input LOW Current
A Input, Both G at 0.4 V
G Input
–0.4
–0.4
mA
V
CC
= MAX, V = 0.4 V
IN
I
A Input, Both G at 2.0 V
–20
–130
26
µA
mA
mA
mA
V
V
= MAX, V = 0.5 V
IN
CC
I
I
Short Circuit Current (Note 1)
–30
= MAX
OS
CC
LS795/LS797
LS795/LS798
Power Supply
Current
V
CC
= MAX
CC
21
Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.
AC CHARACTERISTICS (T = 25°C)
A
Limits
LS795/LS797
LS796/LS798
Symbol
Parameter
Propagation Delay
Unit
Test Conditions
Min
Typ
Max
Min
Typ
Max
t
t
11
15
16
22
6.0
13
10
17
PLH
PHL
ns
V
C
= 5.0 V
= 15 pF
CC
L
t
t
16
13
25
20
17
16
27
25
PZH
PZL
Output Enable Time
Output Disable Time
ns
ns
t
t
13
19
20
27
13
18
20
27
PHZ
PLZ
C
= 5.0 pF
L
FAST AND LS TTL DATA
5-611
Case 751D-03 DW Suffix
20-Pin Plastic
SO-20 (WIDE)
-A-
20
1
11
10
-B-
P
G
R X 45°
C
-T-
M
J
F
°
°
°
°
K
D
Case 732-03 J Suffix
20-Pin Ceramic Dual In-Line
20
11
10
1
B
C
A
L
F
N
K
J
M
H
G
D
°
°
°
°
Case 738-03 N Suffix
20-Pin Plastic
-A-
20
1
11
10
B
C
L
-T-
K
E
N
M
J
G
F
D
°
°
°
°
FAST AND LS TTL DATA
5-612
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Literature Distribution Centers:
USA: Motorola Literature Distribution; P.O. Box 20912; Phoenix, Arizona 85036.
t
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EUROPE: Motorola Ltd.; European Literature Centre; 88 Tanners Drive, Blakelands, Milton Keynes, MK14 5BP, England.
JAPAN: Nippon Motorola Ltd.; 4-32-1, Nishi-Gotanda, Shinagawa-ku, Tokyo 141, Japan.
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