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参数资料
| 型号： | ADM3491E |
| 厂商： | Analog Devices, Inc. |
| 英文描述： | 3.3 V, 【15 kV ESD-Protected, Half- and Full-Duplex, RS-485/RS-422 Transceivers |
| 中文描述： | 3.3伏特，【15千伏ESD保护，半和全双工，RS-485/RS-422收发器 |
| 文件页数： | 4/20页 |
| 文件大小： | 503K |
| 代理商： | ADM3491E |
ADM3483E/ADM3486E/ADM3488E/ADM3490E/ADM3491E
SPECIFICATIONS
V
CC
= 3.3 V ± 0.3 V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.
Rev. A | Page 4 of 20
Table 2. ADM3483E/ADM3486E/ADM3488E/ADM3490E/ADM3491E
Parameter
DRIVER
Differential Outputs
Differential Output Voltage
Δ|V
OD
| for Complementary Output States
1
Common-Mode Output Voltage
Δ|V
OC
| for Complementary Output States
1
Short-Circuit Output Current
Output Leakage (Y, Z) (ADM3491E Only)
Normal Mode
Symbol
V
OD
V
OD
V
OC
V
OC
I
OSD
I
O
Min
2.0
1.5
1.5
250
Typ
Max
0.2
3
0.2
250
20
Unit
V
V
V
V
V
V
mA
mA
μA
Test Conditions/Comments
R
L
= 100 Ω (RS-422) (see Figure 7)
R
L
= 54 Ω (RS-485) (see Figure 7)
R
L
= 60 Ω (RS-485) (see Figure 8)
R
L
= 54 Ω or 100 Ω (see Figure 7)
R
L
= 54 Ω or 100 Ω (see Figure 7)
R
L
= 54 Ω or 100 Ω (see Figure 7)
V
OUT
= 7 V
V
OUT
= 12 V
DE = 0 V, RE = 0 V, V
CC
= 0 V or 3.6 V,
V
OUT
= 12 V
DE = 0 V, RE = 0 V, V
CC
= 0 V or 3.6 V,
V
OUT
= 7 V
DE = 0 V, RE = V
CC
, V
CC
= 0 V or 3.6 V,
V
OUT
= 12 V
DE = 0 V, RE = V
CC
, V
CC
= 0 V or 3.6 V,
V
OUT
= 7 V
DE, DI, RE
DE, DI, RE
DE, DI, RE
7 V < V
CM
< +12 V
V
CM
= 0 V
7 V < V
CM
< +12 V
DE = 0 V, V
CC
= 0 V or 3.6 V, V
IN
= 12 V
DE = 0 V, V
CC
= 0 V or 3.6 V, V
IN
= 7 V
I
OUT
= 1.5 mA, V
ID
= 200 mV (see Figure 9)
I
OUT
= 2.5 mA, V
ID
= 200 mV (see Figure 9)
0 V < V
RO
< V
CC
V
CC
= 3.6 V, 0 V < V
OUT
< V
CC
No load, DI = 0 V or V
CC
, DE = V
CC
,
RE = 0 V or V
CC
No load, DI = 0 V or V
CC
, DE = 0 V,
RE = 0 V
DE = 0 V, RE = V
CC
, DI = 0 V or V
CC
Human body model
Human body model
20
μA
Shutdown Mode
1
μA
1
μA
Logic Inputs
Input High Voltage
Input Low Voltage
Logic Input Current
RECEIVER
Differential Inputs
Differential Input Threshold Voltage
Input Hysteresis
Input Resistance (A, B)
Input Current (A, B)
RO Logic Output
Output High Voltage
Output Low Voltage
Short-Circuit Output Current
Tristate Output Leakage Current
POWER SUPPLY
Voltage Range
Supply Current
V
IH
V
IL
I
IN1
V
TH
V
TH
R
IN
I
IN2
V
OH
V
OL
I
OSR
I
OZR
V
CC
I
CC
2.0
0.2
12
0.8
V
CC
0.4
±8
3.0
50
1.1
0.8
±2
0.2
1.0
0.4
±60
±1
3.6
2.2
V
V
μA
V
mV
k
mA
mA
V
V
mA
μA
V
mA
0.95
1.9
mA
Shutdown Current
ESD PROTECTION
A, B, Y, Z Pins
All Pins Except A, B, Y, Z Pins
1
Δ|V
OD
| and Δ|V
OC
| are the changes in V
OD
and V
OC
, respectively, when DI input changes state.
I
SHDN
0.002
±15
±4
1
μA
kV
kV
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