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参数资料
| 型号： | IN74LS244 |
| 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： | 4/6页 |
| 文件大小： | 241K |
| 代理商： | IN74LS244 |
IN74LS244
4
AC ELECTRICAL CHARACTERISTICS
(T
A
= 25
°
C, V
CC
= 5.0 V, t
r
= 15 ns,
t
f
= 6.0 ns)
Symbol
Parameter
Test Condition
Min
Max
Unit
t
PLH
Propagation Delay, Data to
Output
18
ns
t
PHL
Propagation Delay, Data to
Output
C
L
= 45 pF,
R
L
= 667
18
ns
t
PZH
t
PZL
t
PHZ
t
PLZ
Output Enable Time
23
ns
Output Enable Time
30
ns
Output Disable Time
C
L
= 5 pF
R
L
= 667
18
ns
Output Disable Time
25
ns
t
PZL
- S1 closed, S2 opened
t
PZH
- S1 opened, S2 closed
t
PLZ
, t
PHZ
- S1 and S2 closed
Figure 2. Switching Waveforms
(See Figure 4)
Figure 1. Switching Waveforms
(See Figure 3)
NOTES A.
C
L
includes probe and jig capacitance.
B. All diodes are 1N916 or 1N3064.
NOTES A.
C
L
includes probe and jig capacitance.
B. All diodes are 1N916 or 1N3064.
Figure 3. Test Circuit
Figure 4. Test Circuit
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