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参数资料
| 型号： | IN74LS244DW |
| 厂商： | INTEGRAL JOINT STOCK COMPANY |
| 英文描述： | Octal Bus Transceivers And Registers With 3-State Outputs 24-TVSOP -40 to 85 |
| 中文描述： | 八路三态同相缓冲器/线路驱动器/线接收器 |
| 文件页数： | 2/6页 |
| 文件大小： | 241K |
| 代理商： | IN74LS244DW |
IN74LS244
2
MAXIMUM RATINGS
*
Symbol
Parameter
Value
Unit
V
CC
V
IN
V
OUT
Tstg
Supply Voltage
7.0
V
Input Voltage
7.0
V
Output Voltage
5.5
V
°
C
Storage Temperature Range
-65 to +150
*
Maximum Ratings are those values beyond which damage to the device may occur.
Functional operation should be restricted to the Recommended Operating Conditions.
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
Min
Max
Unit
V
CC
V
IH
V
IL
I
OH
I
OL
T
A
Supply Voltage
4.75
5.25
V
High Level Input Voltage
2.0
V
Low Level Input Voltage
0.8
V
High Level Output Current
-15
mA
Low Level Output Current
24
mA
°
C
Ambient Temperature Range
0
+70
DC ELECTRICAL CHARACTERISTICS
over full operating conditions
Guaranteed Limit
Min
Symbol
Parameter
Test Conditions
Max
Unit
V
IK
V
OH
Input Clamp Voltage
V
CC
= min, I
IN
= -18 mA
V
CC
= min, I
OH
= -1.0 mA
V
CC
= min, I
OH
= -3.0 mA
V
CC
= min, I
OH
= -15 mA
V
CC
= min, I
OL
= 12 mA
V
CC
= min, I
OL
= 24 mA
V
CC
= min
V
CC
= max, V
OUT
= 2.7 V
-1.5
V
High Level Output Voltage
2.7
V
2.4
2.0
V
OL
Low Level Output Voltage
0.4
V
0.5
V
T+
- V
T-
I
OZH
Hysteresis
0.2
V
μ
A
μ
A
μ
A
mA
Output Off Current HIGH
20
I
OZL
Output Off Current LOW
V
CC
= max, V
OUT
= 0.4 V
-20
I
IH
High Level Input Current
V
CC
= max, V
IN
= 2.7 V
20
V
CC
= max, V
IN
= 7.0 V
V
CC
= max, V
IN
= 0.4 V
V
CC
= max, V
O
=0 V
(Note 1)
0.1
I
IL
I
O
Low Level Input Current
-0.2
mA
Output Short Circuit Current
-40
-225
mA
I
CC
Supply
Outputs High
V
CC
= max
Outputs open
27
mA
Current
Outputs Low
46
All outputs
disabled
54
note 1: Not more than one output should be shorted at a time, and duration of the short-circuit should not exceed
one second
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