Supply Voltage (VCC).............................................................12VControl Input Voltage (RE, DE)...................-0.5V to (VCC+ 0.5V)Driver Input Voltage (DI).............................-0.5V to (VCC+ 0.5V)Driver Output Voltage (A, B)...................................-8V to +12.5VReceiver Input Voltage (A, B).................................-8V to +12.5VReceiver 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)....727mW14-Pin Plastic DIP (derate 10.00mW/°C above +70°C)..800mW8-Pin SO (derate 5.88mW/°C above +70°C).................471mW14-Pin SO (derate 8.33mW/°C above +70°C)...............667mW8-Pin µMAX (derate 4.1mW/°C above +70°C)..............830mW8-Pin CERDIP (derate 8.00mW/°C above +70°C).........640mW14-Pin CERDIP (derate 9.09mW/°C above +70°C).......727mWOperating Temperature Ranges
MAX4_ _C_ _/MAX1487C_ A...............................0°C to +70°CMAX4__E_ _/MAX1487E_ A.............................-40°C to +85°CMAX4__M_/MAX1487MJA.............................-55°C to +125°CStorage Temperature Range.............................-65°C to +160°CLead 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 functionaloperation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure toabsolute maximum rating conditions for extended periods may affect device reliability.DC ELECTRICAL CHARACTERISTICS
(VCC= 5V ±5%, TA= TMINto TMAX, unless otherwise noted.) (Notes 1, 2)
PARAMETER
Differential Driver Output (no load)Differential Driver Output(with load)
Change in Magnitude of DriverDifferential Output Voltage forComplementary Output StatesDriver Common-Mode OutputVoltage
Change in Magnitude of DriverCommon-Mode Output Voltagefor Complementary Output StatesInput High VoltageInput Low VoltageInput Current
SYMBOLVOD1VOD2ΔVODVOCΔVODVIHVILIIN1
R = 50Ω(RS-422)
R = 27Ω(RS-485), Figure 4R = 27Ωor 50Ω, Figure 4R = 27Ωor 50Ω, Figure 4R = 27Ωor 50Ω, Figure 4DE, DI, REDE, DI, REDE, DI, REDE = 0V;
VCC= 0V or 5.25V,all devices exceptMAX487/MAX1487
MAX487/MAX1487,
DE = 0V, VCC= 0V or 5.25V
Receiver Differential ThresholdVoltage
Receiver Input HysteresisReceiver Output High VoltageReceiver Output Low VoltageThree-State (high impedance)Output Current at Receiver
VTHΔVTHVOHVOLIOZR
-7V ≤VCM≤12VVCM= 0V
IO= -4mA, VID= 200mVIO = 4mA, VID= -200mV0.4V ≤VO≤2.4V
-7V ≤VCM≤12V, all devices exceptMAX487/MAX1487
-7V ≤VCM ≤12V, MAX487/MAX1487
12483.5
0.4±1
VIN= 12VVIN= -7VVIN= 12VVIN= -7V
-0.2
70
2.0
0.8±21.0
mA
-0.80.25-0.20.2
mAVmVVVµAkΩkΩ
21.5
50.230.2
CONDITIONS
MIN
TYP
MAX5
UNITSVVVVVVVµA
Input Current(A, B)
IIN2
Receiver Input ResistanceRIN
2Maxim Integrated
MAX481/MAX483/MAX485/MAX487–MAX491/MAX1487Low-Power, Slew-Rate-LimitedRS-485/RS-422 Transceivers100pFZTTL INtR, tF < 6nsDYR = 54ΩABRRECEIVEROUT100pFFigure 14. Receiver Propagation Delay Test CircuitA500mV/divVCC = 5VTA = +25°CB500mV/divVCC = 5VTA = +25°CBROA2V/div2V/divRO20ns/div20ns/divFigure 15. MAX481/MAX485/MAX490/MAX491/MAX1487Receiver tPHLFigure 16. MAX481/MAX485/MAX490/MAX491/MAX1487Receiver tPLHA500mV/divVCC = 5VTA = +25°CB500mV/divVCC = 5VTA = +25°CBRO2V/divA2V/divRO400ns/div400ns/divFigure 17. MAX483, MAX487–MAX489 Receiver tPHLFigure 18. MAX483, MAX487–MAX489 Receiver tPLH12Maxim Integrated
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