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參數(shù)資料
| 型號(hào)： | ADM1487AR |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 通用總線功能 |
| 英文描述： | Ultra-Low Power RS-485/RS-422 Transceiver with Low EMI and +/-10kV ESD Protection |
| 中文描述： | LINE TRANSCEIVER, PDSO8 |
| 封裝： | SO-8 |
| 文件頁數(shù)： | 2/8頁 |
| 文件大?。?/td> | 387K |
| 代理商： | ADM1487AR |
ADM1487
ADM1487 SPECIFICATIONS
–2–
Rev. PrC
PRELIMINARY TECHNICAL DATA
DC ELECTRICAL CHARACTERISTICS
(V
CC
= +5V ±5%, T
A
= 0°C TO +70°C, UNLESS OTHERWISE NOTED)
Parameter
Min
Typ
Max
Units
Test Conditions/Comments
Differential Driver Output Voltage,V
OD1
5
V
Unloaded, I
O
= 0
Differential Driver Output Voltage, V
OD2
2.0
1.5
V
V
Figure 1, R = 50 (RS-422)
Figure 1, R = 27
5
(RS-485)
Change in Magnitude of Driver
Differential Output Voltage for
Complementary Output States,
0.2
V
Figure 1, R = 27 or R = 50
VOD
Driver Common-Mode Output
Voltage, V
OC
3
V
Figure 1, R = 27 or R = 50
Change in Magnitude of Driver
Common-Mode Output Voltage for
Complementary Output States,
0.2
V
R = 27 or R = 50
|V
OC
|
Input High Voltage (DE, DI,
RE
), V
IH
2
V
Input Low Voltage (DE, DI,
RE
), V
IL
0.8
V
Input Current (DE, DI,
RE
), I
IN1
±2
μA
Input Current (A, B), I
IN2
0.30
-0.15
mA
mA
DE = 0, V
CC
= 0V or 5.25V, V
IN
= 12V
DE = 0, V
CC
= 0V or 5.25V, V
IN
= –7V
Differential Input Threshold Voltage
for Receiver, V
TH
-0.2
0.2
V
–7V
V
CM
12V
Receiver Input Hysteresis,
V
TH
45
mV
V
CM
= 0V
Receiver Output High Voltage, V
OH
3.5
V
I
O
=-4mA, V
ID
= 200mV
Receiver Output Low Voltage, V
OL
0.4
V
I
O
= 4mA, V
ID
= –200mV
Three-State (High Impedance) Output
Current at Receive, I
OZR
±1
μA
V
CC
= Max, 0.4V
Vo
2.4V
Receiver Input Resistance, R
IN
70
96
k
–7V
V
CM
12V
Supply Current, I
CC
120
80
200
120
μA
μA
No Load, Output Enabled
No Load, Output Disabled
Supply Current in Shutdown Mode, I
SHDN
1
10
μA
DE = 0V,
RE
= V
CC
Driver Short-Circuit Ourrent, I
OSD1
35
250
mA
V
OUT
= HIGH, –7V
V
O
12V
Driver Short-Circuit Ourrent, I
OSD2
35
250
mA
V
OUT
= LOW, –7V
Vo
12V
Receiver Short-Circuit Current, I
OSR
7
85
mA
0V
V
O
V
OC
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