Datasheet

MAX3483/MAX3485/MAX3486/MAX3488/MAX3490/MAX3491
3.3V-Powered, 10Mbps and Slew-Rate-Limited
True RS-485/RS-422 Transceivers
6 _______________________________________________________________________________________
0.8
0.7
0.9
1.0
1.1
1.2
-40 -20 0 20 40 60 10080
SUPPLY CURRENT
vs. TEMPERATURE
MAX3483-09
TEMPERATURE (°C)
SUPPLY CURRENT (mA)
X = DON’T CARE
DE = V
CC
, RE = X
DE = 0, RE = 0
_____________________________Typical Operating Characteristics (continued)
0
10
20
30
40
50
60
70
80
100
90
-40 -20 0 20 40 60 10080
SHUTDOWN CURRENT
vs. TEMPERATURE
MAX3483-10
TEMPERATURE (°C)
SHUTDOWN CURRENT (nA)
______________________________________________________________Pin Description
—
—
3
4
5
6
—
8
—
7
1
—
MAX3483/
MAX3485/
MAX3486
21
2
3
4
5
—
—
6
—
7
—
8
—
2
Receiver Output. If A > B by 200mV, RO will be high; if A < B by 200mV,
RO will be low.
3
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.
4
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.
5
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.
6, 7 Ground
9 Noninverting Driver Output
10 Inverting Driver Output
— Noninverting Receiver Input and Noninverting Driver Output
12 Noninverting Receiver Input
RO
–
RE
DE
DI
GND
Y
Z
A
A
— B Inverting Receiver Input and Inverting Driver Output
11 B Inverting Receiver Input
13, 14 V
CC
Positive Supply: 3.0V ≤ V
CC
≤ 3.6V
1, 8 N.C. No Connect—not internally connected
MAX3488/
MAX3490
PIN
FUNCTION
MAX3491
FUNCTION
NAME
NAME