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參數(shù)資料
| 型號： | MAX1480C |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Complete, Isolated RS-485/RS-422 Data Interface(半雙工，完全隔離的RS-485/422收發(fā)器) |
| 中文描述： | 完備的隔離型、RS-485/RS-422數(shù)據(jù)接口 |
| 文件頁數(shù)： | 2/20頁 |
| 文件大?。?/td> | 315K |
| 代理商： | MAX1480C |
M
Complete, Isolated,
RS -485/RS -422 Data Interfac e
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
With Respect to GND_
Supply Voltage (V
CC_
)...........................................-0.3V to +6V
Control Input Voltage (SD, FS)...............-0.3V to (V
CC_
+ 0.3V)
Receiver Output Voltage (RO, RO)........-0.3V to (V
CC_
+ 0.3V)
Output Switch Voltage (D1, D2)........................................+12V
With Respect to ISO COM_
Control Input Voltage (ISO DE_ )....-0.3V to (ISO V
CC_
+ 0.3V)
Driver Input Voltage (ISO DI_ ) .......-0.3V to (ISO V
CC_
+ 0.3V)
Receiver Output Voltage (ISO RO_) .-0.3V to (ISO V
CC_
+ 0.3V)
Driver Output Voltage (A, B, Y, Z ) ......................-8V to +12.5V
Receiver Input Voltage (A, B)..............................-8V to +12.5V
ELECTRICAL CHARACTERISTICS
(V
CC_
= 5V ±10%, FS = 0V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V
CC_
= 5V and T
A
= +25°C.)
(Notes 1, 2)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
LED Forward Current (DI, DE, ISO RO LED) ......................50mA
Continuous Power Dissipation (T
A
= +70°C)
24-Pin Plastic DIP (derate 8.7mW°C above +70°C) .....696mW
28-Pin Plastic DIP (derate 9.09mW/°C above +70°C) ..727mW
Operating Temperature Ranges
MAX1480_CPI/MAX1490_CPI..............................0°C to +70°C
MAX1480_EPI/MAX1490_EPI...........................-40°C to +85°C
Storage Temperature Range.............................-65°C to +160°C
Lead Temperature (soldering, 10sec) .............................+300°C
FS = V
CC_
or open
FS = 0V
FS = 0V
CONDITIONS
200
535
350
725
55
120
28
V
4.75
5.0
5.25
V
S
4.5
5.0
5.5
Supply Voltage
F
SWL
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
FS = V
CC_
or open
kHz
F
SWH
Switch Frequency
90
MAX1480B,
DE
′
= V
CC_
or open
86
100
170
65
150
MAX1480A,
DE
′
= V
CC_
or open
45
mA
135
I
CC
Operating Supply Current
Low
V
0.8
V
SDL
MAX1490A
Shutdown Input Threshold
SD = V
CC_
High
μA
0.2
I
SHDN
Shutdown Supply Current
(Note 3)
2.4
V
SDH
125
High
Low
FS low
FS high
2.4
V
FSH
V
FSL
V
0.8
50
FS Input Threshold
DE
′
, DI
′
DE
′
, DI
′
T
A
= +25°C, V
ISO
= 50VDC
V
V
V
CC_
- 0.4
V
IH
V
IL
R
ISO
Input High Voltage
Input Low Voltage
Isolation Resistance
0.4
μA
pA
FS Input Pull-Up Current
FS Input Leakage Current
10
pA
10
Shutdown Input Leakage
Current
MAX1480A/B
MAX1490A/B
MAX1480A/B
MAX1490A/B
R
L
=
∞
R
L
= 54
R
L
=
∞
R
L
= 54
R
L
=
∞
R
L
= 54
R
L
=
∞
R
L
= 54
MAX1490B
T
A
= +25°C, V
ISO
= 50VDC
pF
10
C
ISO
Isolation Capacitance
M
100
10,000
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