3.3V-Powered, ±15kV ESD-Protected, 12Mbps and
Slew-Rate-Limited True RS-485/RS-422 Transceivers
MAX3483E/MAX3485E/MAX3486E/MAX3488E/MAX3490E/MAX3491E
Typical Operating Characteristics (continued)
(V
CC
= +3.3V, T
A
= +25°C, unless otherwise noted.)
SUPPLY CURRENT
vs. TEMPERATURE
X = DON’T CARE
1.1
SUPPLY CURRENT (mA)
DE = V
CC
, RE = X
DE = 0, RE = 0
0.9
MAX3483E-09
SHUTDOWN CURRENT
vs. TEMPERATURE
90
SHUTDOWN CURRENT (nA)
80
70
60
50
40
30
20
10
MAX3483E-10
1.2
100
1.0
0.8
0.7
-40
-20
0
20
40
60
80
100
TEMPERATURE (°C)
0
-40
-20
0
20
40
60
80
100
TEMPERATURE (°C)
Pin Description
PIN
MAX3483E
MAX3485E
MAX3486E
1
MAX3488E
MAX3490E
2
NAME
MAX3491E
Receiver Output. If A > B by 200mV, RO will be high; if A < B by 200mV,
RO will be low.
Receiver Output Enable. RO is enabled when
RE
is low; RO is high imped-
ance when
RE
is high. If
RE
is high and DE is low, the device will enter a
low-power shutdown mode.
Driver Output Enable. The driver outputs are enabled by bringing DE high.
They are high impedance when DE is low. If
RE
is high and DE is low, the
device will enter a low-power shutdown mode. If the driver outputs are
enabled, the parts function as line drivers. While they are high impedance,
they function as line receivers if
RE
is low.
Driver Input. A low on DI forces output Y low and output Z high. Similarly, a
high on DI forces output Y high and output Z low.
Ground
Noninverting Driver Output
Inverting Driver Output
Noninverting Receiver Input and Noninverting Driver Output
Noninverting Receiver Input
Inverting Receiver Input and Inverting Driver Output
Inverting Receiver Input
Positive Supply: 3.0V
≤
V
CC
≤
3.6V. Do not operate device with V
CC
> 3.6V.
No Connection. Not internally connected.
FUNCTION
2
RO
2
—
3
RE
3
—
4
DE
4
5
—
—
6
—
7
—
8
—
6
3
4
5
6
—
8
—
7
1
—
5
6, 7
9
10
—
12
—
11
13, 14
1, 8
DI
GND
Y
Z
A
A
B
B
V
CC
N.C.
_______________________________________________________________________________________
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
