MAX3490EPA Просмотр технического описания (PDF) - Maxim Integrated
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производитель
MAX3490EPA
Maxim Integrated
MAX3490EPA Datasheet PDF : 16 Pages
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3.3V-Powered, 10Mbps and Slew-Rate-Limited
True RS-485/RS-422 Transceivers
_____________________________Typical Operating Characteristics (continued)
SUPPLY CURRENT
vs. TEMPERATURE
1.2
X = DON’T CARE
1.1
1.0
DE = VCC, RE = X
DE = 0, RE = 0
0.9
0.8
0.7
-40 -20
0 20 40 60
TEMPERATURE (°C)
80 100
SHUTDOWN CURRENT
vs. TEMPERATURE
100
90
80
70
60
50
40
30
20
10
0
-40 -20
0 20 40 60
TEMPERATURE (°C)
80 100
______________________________________________________________Pin Description
MAX3483/
MAX3485/
MAX3486
1
2
3
4
5
—
—
6
—
7
—
8
—
PIN
MAX3488/
MAX3490
2
—
—
3
4
5
6
—
8
—
7
1
—
MAX3491
2
3
4
5
6, 7
9
10
—
12
—
11
13, 14
1, 8
NAME
FUNCTION
RO
–RE
DE
DI
GND
Y
Z
A
A
B
B
VCC
N.C.
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 ≤ VCC ≤ 3.6V
No Connect—not internally connected
6 _______________________________________________________________________________________
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