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参数资料
| 型号： | ADM3493ARZ-REEL7 |
| 厂商： | ANALOG DEVICES INC |
| 元件分类： | 通用总线功能 |
| 英文描述： | 3.3 V Slew Rate Limited, Half Duplex RS-485/RS-422 Transceiver |
| 中文描述： | LINE TRANSCEIVER, PDSO8 |
| 封装： | LEAD FREE, MS-012AA, SOIC-8 |
| 文件页数： | 8/12页 |
| 文件大小： | 233K |
| 代理商： | ADM3493ARZ-REEL7 |
ADM3493
SWITCHING CHARACTERISTICS
Rev. 0 | Page 8 of 12
IN
OUT
1.5V
1.5V
+3V
0
≈
+2V
≈
–2V
t
DD
t
DD
t
TD
t
TD
50%
10%
50%
10%
90%
90%
0
Figure 12. Driver Differential Output Delay and Transition Times
3V
0V
V
OH
V
OL
V
OH
V
OL
V
OM
V
OM
V
OM
V
OM
IN
A
OUT
B
OUT
1.5V
1.5V
t
PLH
t
PHL
t
PHL
t
PLH
0
Figure 13. Driver Propagation Delays
0
V
OH
0
3V
1.5V
1.5V
0.25V
IN
OUT
V
OM
t
PZH
t
PHZ
0
Figure 14. Driver Enable and Disable Times (t
PZH
, t
PSH
, t
PHZ
)
V
OL
V
CC
0
3V
0.25V
IN
OUT
1.5V
1.5V
t
PSL
t
PLZ
V
OM
0
Figure 15. Driver Enable and Disable Times (t
PZL
, t
PSL
, t
PLZ
)
0
3V
0
V
CC
0
IN
OUT
V
OM
V
OM
1.5V
1.5V
t
RPHL
t
RPLH
Figure 16. Receiver Propagation Delay
+3V
0
V
OH
0
S1 OPEN
S1 CLOSED
S1 OPEN
S2 CLOSED
S1 CLOSED
S2 OPEN
+3V
0
V
CC
V
OL
+3V
0
V
CC
V
OL
+3V
0
V
OH
0
+1.5V
+1.5V
+1.5V
IN
OUT
IN
OUT
IN
OUT
IN
OUT
t
PRZL
t
PRSL
t
PRLZ
t
PRHZ
+0.25V
+0.25V
+1.5V
+1.5V
+1.5V
t
PRZH
t
PRSH
0
Figure 17. Receiver Enable and Disable Times
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