Low-Power, Slew-Rate-Limited
RS-485/RS-422 Transceivers
NOTES FOR ELECTRICAL/SWITCHING CHARACTERISTICS
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.
Note 2: All typical specifications are given for V
= 5V and T = +25°C.
A
CC
Note 3: Supply current specification is valid for loaded transmitters when DE = 0V.
Note 4: Applies to peak current. See Typical Operating Characteristics.
Note 5: The MAX481/MAX483/MAX487 are put into shutdown by bringing RE high and DE low. If the inputs are in this state for less
than 50ns, the parts are guaranteed not to enter shutdown. If the inputs are in this state for at least 600ns, the parts are
guaranteed to have entered shutdown. See Low-Power Shutdown Mode section.
__________________________________________Typical Operating Characteristics
(V
CC
= 5V, T = +25°C, unless otherwise noted.)
A
OUTPUT CURRENT vs.
RECEIVER OUTPUT LOW VOLTAGE
OUTPUT CURRENT vs.
RECEIVER OUTPUT HIGH VOLTAGE
RECEIVER OUTPUT HIGH VOLTAGE vs.
TEMPERATURE
-20
-18
-16
-14
-12
-10
4.8
4.6
45
I
RO
= 8mA
40
35
4.4
4.2
30
25
20
15
10
5
4.0
3.8
-8
3.6
3.4
3.2
3.0
-6
-4
-2
0
0
0
0.5
1.0
1.5
2.0
2.5
1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
OUTPUT HIGH VOLTAGE (V)
-50 -25
0
25
50
75 100 125
OUTPUT LOW VOLTAGE (V)
TEMPERATURE (°C)
RECEIVER OUTPUT LOW VOLTAGE vs.
TEMPERATURE
DRIVER OUTPUT CURRENT vs.
DIFFERENTIAL OUTPUT VOLTAGE
DRIVER DIFFERENTIAL OUTPUT VOLTAGE
vs. TEMPERATURE
0.9
0.8
2.4
2.3
90
80
70
R = 54Ω
I
= 8mA
RO
0.7
0.6
2.2
2.1
2.0
60
50
0.5
0.4
1.9
1.8
1.7
40
30
20
10
0.3
0.2
0.1
1.6
1.5
0
0
-50 -25
0
25
50
75 100 125
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
DIFFERENTIAL OUTPUT VOLTAGE (V)
-50 -25
0
25
50
75 100 125
TEMPERATURE (°C)
TEMPERATURE (°C)
_______________________________________________________________________________________
5
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
