MAX1482(1995) Ver la hoja de datos (PDF) - Maxim Integrated
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MAX1482 Datasheet PDF : 12 Pages
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20µA, 1⁄8-Unit-Load, Slew-Rate-Limited
RS-485 Transceivers
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (VCC) ...............................................................7V
Control Input Voltages (RE, DE) .................-0.5V to (VCC + 0.5V)
Driver Input Voltage (DI).............................-0.5V to (VCC + 0.5V)
Driver Output Voltages ..........................................-7.5V to 12.5V
Receiver Input Voltages (A, B) ..............................-7.5V to 12.5V
Receiver Output Voltage (RO)....................-0.5V to (VCC + 0.5V)
Continuous Power Dissipation (TA = +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
14-Pin SO (derate 8.33mW/°C above +70°C)................667mW
8-Pin µMAX (derate 4.10mW/°C above +70°C) .............330mW
Operating Temperature Ranges
MAX148_C_ _ .......................................................0°C to +70°C
MAX148_E_ _.....................................................-40°C to +85°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10sec) .............................+300°C
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.
DC ELECTRICAL CHARACTERISTICS
(VCC = 5V ±5%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
Differential Driver Output (no load) VOD1
Differential Driver Output
(with load)
VOD2
Change in Magnitude of Driver
Differential Output Voltage for
Complementary Output States
Driver Common-Mode Output
Voltage
Change in Magnitude of Driver
Common-Mode Output Voltage
for Complementary Output States
∆VOD
VOC
∆VOD
CONDITIONS
R = 50Ω (RS-422), Figure 1
R = 27Ω (RS-485), Figure 1
R = 27Ω or 50Ω, Figure 1
R = 27Ω or 50Ω, Figure 1
R = 27Ω or 50Ω, Figure 1
MIN TYP MAX UNITS
5
V
2
5
V
1.5
5
0.2
V
3
V
0.2
V
Three-State (high impedance)
Output Current at Driver
Logic Input High Voltage
Logic Input Low Voltage
Logic Input Current
Input Current
(A, B)
Receiver Differential Threshold
Voltage
Receiver Input Hysteresis
Receiver Output High Voltage
Receiver Output Low Voltage
Three-State (high impedance)
Output Current at Receiver
IOZD
VIH
VIL
IIN1
IIN2
VTH
∆VTH
VOH
VOL
IOZR
MAX1482 only,
-7V < VY and VZ < 12V
DE, DI, –R—E–
DE, DI, –R—E–
DE, DI, –R—E–
MAX1482,
DE = 0V, VCC = 0V or 5.25V
MAX1483,
DE = 0V, VCC = 0V or 5.25V
-7V ≤ VCM ≤ 12V
VCM = 0V
IO = -4mA, VID = 200mV
IO = 4mA, VID = -200mV
VIN = 12V
VIN = -7V
VIN = 12V
VIN = -7V
0.4V ≤ VO ≤ 2.4V
±50
µA
2.0
V
0.8
V
±2
µA
150
-100
µA
200
-150
-0.2
0.2
V
75
mV
3.5
V
0.4
V
±1
µA
Receiver Input Resistance
RIN
-7V ≤ VCM ≤ 12V
96
kΩ
Note 1: All currents into device pins are positive; all currents out of device pins are negative. All voltages are referenced to device
ground unless otherwise specified.
2 _______________________________________________________________________________________
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