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參數(shù)資料
| 型號： | ADM4851 |
| 廠商： | Analog Devices, Inc. |
| 元件分類： | RS-485 |
| 英文描述： | 5 V Slew-Rate Limited Half- and Full-Duplex RS-485/RS-422 Transceivers |
| 中文描述： | 5伏擺率限制半和全雙工RS-485/RS-422收發(fā)器 |
| 文件頁數(shù)： | 3/16頁 |
| 文件大小： | 438K |
| 代理商： | ADM4851 |
ADM4850–ADM4857
SPECIFICATIONS
V = 5 V ± 5%, T
A
= T
MIN
to T
MAX
, unless otherwise noted.
Table 2.
Parameter
DRIVER
Differential Output Voltage, V
OD
|V
OD
| for Complementary Output States
Common-Mode Output Voltage, V
O
|V
O
| for Complementary Output States
Output Short-Circuit Current, V
OUT
= High
Output Short-Circuit Current, V
OUT
= Low
DRIVER INPUT LOGIC
CMOS Input Logic Threshold Low
CMOS Input Logic Threshold High
CMOS Logic Input Current (DI)
DE Input Resistance to GND
RECEIVER
Differential Input Threshold Voltage, V
TH
Input Hysteresis
Input Resistance (A, B)
Input Current (A, B)
CMOS Logic Input Current (RE)
CMOS Output Voltage Low
CMOS Output Voltage High
Output Short Circuit Current
Three-State Output Leakage Current
POWER SUPPLY CURRENT
I (115 kbps Options)
I (500 kbps Options)
I (2.5 Mbps Options)
I (10 Mbps Options)
Rev. 0 | Page 3 of 16
Min
2.0
1.5
1.5
200
200
2.0
200
96
4.0
7
Typ
1.4
1.4
220
125
20
150
36
100
80
120
250
320
250
320
Max
V
CC
5
5
5
0.2
3
0.2
+200
+200
0.8
±1
30
0.125
0.1
±1
0.4
85
±2
5
60
160
5
120
200
5
400
500
5
400
500
Unit
V
V
V
V
V
V
V
mA
mA
V
V
μA
k
mV
mV
k
mA
mA
μA
V
V
mA
μA
μA
μA
μA
μA
μA
μA
μA
μA
μA
μA
μA
μA
Test Conditions/Comments
R =
∞
, Figure 4
1
R = 50 (RS-422), Figure 4
R = 27 (RS-485), Figure 4
V
TST
= 7 V to 12 V, Figure 5
R = 27 or 50 , Figure 4
R = 27 or 50 , Figure 4
R = 27 or 50 , Figure 4
7 V < V
OUT
< +12 V
7 V < V
OUT
< +12 V
7 V < V
M
< +12 V
7 V < V
M
< +12 V
7 V < V
M
< +12 V
V
IN
= +12 V
V
IN
= 7 V
I
OUT
= +4 mA
I
OUT
= 4 mA
V
OUT
= GND or V
CC
0.4 V ≤ V
OUT
≤ 2.4 V
DE = 0 V, RE = V
CC
(shutdown)
DE = 0 V, RE = 0 V
DE = V
CC
DE = 0 V, RE = V
CC
(shutdown)
DE = 0 V, RE = 0 V
DE = V
CC
DE = 0 V, RE = V
CC
(shutdown)
DE = 0 V, RE = 0 V
DE = V
CC
DE = 0 V, RE = V
CC
(shutdown)
DE = 0 V, RE = 0 V
DE = V
CC
1
Guaranteed by design.
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