MAX3471
1.6µA, RS-485/RS-422, Half-Duplex,
Differential Transceiver for Battery-Powered Systems
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS (Note 1)
DC ELECTRICAL CHARACTERISTICS
(V
CC
= +2.5V to +5.5V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V
CC
= +3.6V and T
A
= +25°C.) (Note 1)
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.
Supply Voltage (V
CC
) ..............................................................7V
Control Input Voltage (
RE, DE)...................-0.3V to (V
CC
+ 0.3V)
Driver Input Voltage (DI).............................-0.3V to (V
CC
+ 0.3V)
Driver Output/Receiver Input Voltage (A, B).....................±10.5V
Receiver Output Voltage (RO)....................-0.3V to (V
CC
+ 0.3V)
Continuous Power Dissipation
µMAX (derate 4.5mW/°C above +70°C) ......................362mW
Operating Temperature Ranges
MAX3471CUA.....................................................0°C to +70°C
MAX3471EUA..................................................-40°C to +85°C
Storage Temperature Range.............................-65°C to +160°C
Lead Temperature (soldering, 10sec).............................+300°C
V
IN
= 10V
V
IN
= -7V -0.075
V
CC
≤ 5.5V
Figure 1
-130 130
Figure 1 (R = open)
I
O
= 2.2mA, V
ID
= -450mV
I
O
= -0.8mA, V
ID
= -50mV
V
CM
= 0
DE, DI, RE
-7V ≤ V
CM
≤ 10V
V
CC
≤ 3.6V
DE, DI, RE
Figure 1, R = 750Ω or 27Ω
Figure 1, R = 750Ω or 27Ω
DE = GND,
V
CC
= GND or 5.5V
Figure 1, R = 750Ω or 27Ω
DE, DI, RE
CONDITIONS
V0.4V
OL
Receiver Output Low Voltage
VV
CC
- 0.4V
OH
Receiver Output High Voltage
mV32∆V
TH
Receiver Input Hysteresis
mV-450 -250 -50V
TH
Receiver Differential Threshold
Voltage
mA
-60 60
I
OSD
Driver Short-Circuit Output
Current (Note 3)
mA
0.105
I
IN2
Input Current (A and B),
Half Duplex
µA±0.001 ±1I
IN1
Input Current
0.2 0.83
V
1.5 3.28
V
OD2
VV
CC
V
OD1
Differential Driver Output (no load)
Differential Driver Output
(with load)
mV100V
HYS
DI Input Hysteresis
V0.3 x V
CC
V
IL
Input Low Voltage
V0.7 x V
CC
V
IH
Input High Voltage
V0.2∆V
OC
Change in Magnitude of
Common-Mode Voltage (Note 2)
1.5
V0.2∆V
OD
Change in Magnitude of
Differential Output Voltage
(Note 2)
V0.6 x V
CC
V
OC
Driver Common-Mode Output
Voltage
UNITSMIN TYP MAXSYMBOLPARAMETER
R = 750Ω (RS-422)
R = 27Ω (RS-485)
R = 27Ω (RS-485),
V
CC
= 5V, T
A
= +25°C
0 ≤ V
O
≤ V
CC
µA±1I
OZR
Three-State Current at Receiver
Output
-7V ≤ V
CM
≤ 10V
kΩ
96R
IN
Receiver Input Resistance
-7V ≤ V
OUT
≤ 10V
Note 1: All currents into the device are positive; all currents out of the device are negative. All voltages are referred to device
ground unless otherwise noted.
