參數(shù)資料
型號(hào)： MAX488
廠商： Maxim Integrated Products, Inc.
英文描述： Low-Power, Slew-Rate-Limited RS-485Transceivers(250kbps,全雙工, RS-485收發(fā)器)
中文描述： 低功耗、限擺率、RS-485/RS-422收發(fā)器
文件頁(yè)數(shù)： 2/16頁(yè)
文件大?。?/td> 205K
代理商： MAX488
M
Low-Power, S lew-Rate-Limited
RS -485/RS -422 Transc eivers
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
CC
).............................................................12V
Supply Voltage (V
CC
+ 0.5V)
Driver Input Voltage (DI).............................-0.5V to (V
CC
+ 0.5V)
Driver Output Voltage (A, B)...................................-8V to +12.5V
Receiver Input Voltage (A, B).................................-8V to +12.5V
Receiver Output Voltage (RO).....................-0.5V to (V
CC
+0.5V)
Continuous Power Dissipation (T
A
= +70°C)
8-Pin Plastic DIP (derate 9.09mW/°C above +70°C) ....727mW
14-Pin Plastic DIP (derate 10.00mW/°C above +70°C)..800mW
8-Pin SO (derate 5.88mW/°C above +70°C).................471mW
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.
14-Pin SO (derate 8.33mW/°C above +70°C)...............667mW
8-Pin μMAX (derate 4.1mW/°C above +70°C)..............830mW
8-Pin CERDIP (derate 8.00mW/°C above +70°C).........640mW
14-Pin CERDIP (derate 9.09mW/°C above +70°C).......727mW
Operating Temperature Ranges
MAX4_ _C_ _/MAX1487C_ A ...............................0°C to +70°C
MAX4_ _E_ _/MAX1487E_ A.............................-40°C to +85°C
MAX4_ _MJ _/MAX1487MJ A ...........................-55°C to +125°C
Storage Temperature Range.............................-65°C to +160°C
Lead Temperature (soldering, 10sec) .............................+300°C
DC ELECTRICAL CHARACTERISTICS
(V
CC
= 5V ±5%, T
A
= T
MIN
to T
MAX
, unless otherwise noted.) (Notes 1, 2)
V
V
IN
= -7V
V
IN
= 12V
V
IN
= -7V
V
IN
= 12V
Input Current
(A, B)
I
IN2
V
TH
k
48
-7V
≤
V
CM
≤
12V, MAX487/MAX1487
R
IN
Receiver Input Resistance
-7V
≤
V
CM
≤
12V, all devices except
MAX487/MAX1487
R = 27
(RS-485), Figure 4
0.4V
≤
V
O
≤
2.4V
R = 50
(RS-422)
I
O
= 4mA, V
ID
= -200mV
I
O
= -4mA, V
ID
= 200mV
V
CM
= 0V
-7V
≤
V
CM
≤
12V
DE, DI, –—
DE = 0V;
V
CC
= 0V or 5.25V,
all devices except
MAX487/MAX1487
DE, DI, –—
MAX487/MAX1487,
DE = 0V, V
CC
= 0V or 5.25V
DE, DI, –—
R = 27
or 50
, Figure 4
R = 27
or 50
, Figure 4
R = 27
or 50
, Figure 4
CONDITIONS
k
12
μA
±1
I
OZR
Three-State (high impedance)
Output Current at Receiver
V
0.4
V
OL
Receiver Output Low Voltage
3.5
V
OH
Receiver Output High Voltage
mV
70
V
TH
Receiver Input Hysteresis
V
-0.2
0.2
Receiver Differential Threshold
Voltage
-0.2
mA
0.25
mA
-0.8
1.0
1.5
5
V
OD2
Differential Driver Output
(with load)
V
2
V
5
V
OD1
Differential Driver Output (no load)
μA
±2
I
IN1
Input Current
V
0.8
V
IL
Input Low Voltage
V
2.0
V
IH
Input High Voltage
V
0.2
V
OD
Change in Magnitude of Driver
Common-Mode Output Voltage
for Complementary Output States
V
0.2
V
OD
Change in Magnitude of Driver
Differential Output Voltage for
Complementary Output States
Driver Common-Mode Output
Voltage
V
3
V
OC
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
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