MAX3490E 查看數據表（PDF） - Maxim Integrated
零件编号
产品描述 (功能)
生产厂家
MAX3490E
Maxim Integrated
MAX3490E Datasheet PDF : 16 Pages
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3.3V-Powered, ±15kV ESD-Protected, 12Mbps and
Slew-Rate-Limited True RS-485/RS-422 Transceivers
Typical Operating Characteristics (continued)
(VCC = +3.3V, TA = +25°C, unless otherwise noted.)
SUPPLY CURRENT
vs. TEMPERATURE
1.2
X = DON’T CARE
SHUTDOWN CURRENT
vs. TEMPERATURE
100
90
1.1
80
70
1.0
DE = VCC, RE = X
60
50
DE = 0, RE = 0
0.9
40
30
0.8
0.7
-40 -20
0 20 40 60
TEMPERATURE (°C)
80 100
20
10
0
-40 -20
0 20 40 60
TEMPERATURE (°C)
80 100
Pin Description
MAX3483E
MAX3485E
MAX3486E
PIN
MAX3488E
MAX3490E
MAX3491E
NAME
1
2
2
RO
2
—
3
RE
3
—
4
DE
4
3
5
DI
5
4
6, 7
GND
—
5
9
Y
—
6
10
Z
6
—
—
A
—
8
12
A
7
—
—
B
—
7
11
B
8
1
13, 14
VCC
—
—
1, 8
N.C.
FUNCTION
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. Do not operate device with VCC > 3.6V.
No Connection. Not internally connected.
6 _______________________________________________________________________________________
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