MAX3187 Просмотр технического описания (PDF) - Maxim Integrated
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MAX3187 Datasheet PDF : 8 Pages
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±15kV ESD-Protected, EMC-Compliant, 230kbps,
Dual RS-232 Serial Port for Motherboards/Desktops
__________________________________________Typical Operating Characteristics
(VCC = +5V, VDD = +12V, VSS = -12V, TA = +25°C, unless otherwise noted.)
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
40
IDD, 240kbps
30
IDD, 120kbps
20
IDD, 20kbps
10
ICC
VCC = 5V
2 TRANSMITTERS AT DATA RATE
0
-10
ISS, 20kbps
4 TRANSMITTERS AT DATA RATE/16
3kΩ + CLOAD
ISS, 120kbps
-20
ISS, 240kbps
-30
-40
10.8
11.4
12.0
12.6
13.2
SUPPLY VOLTAGE (±V)
SUPPLY CURRENT
vs. LOAD CAPACITANCE
40
IDD, 240kbps
30
20
IDD, 120kbps
IDD, 20kbps
10
ICC
2 TRANSMITTERS AT DATA RATE
0
4 TRANSMITTERS AT DATA RATE/16
-10
ISS, 20kbps 3kΩ + CLOAD
-20
ISS, 120kbps
ISS, 240kbps
-30
-40
0
1000 2000 3000 4000 5000
LOAD CAPACITANCE (pF)
SLEW RATE
vs. LOAD CAPACITANCE
16
14
RISE
12
10
FALL
8
6
4
2 TRANSMITTERS AT DATA RATE
2 4 TRANSMITTERS AT DATA RATE/16
3kΩ + CLOAD
0
0 1000 2000 3000 4000 5000
LOAD CAPACITANCE (pF)
TRANSMITTER OUTPUT VOLTAGE
vs. LOAD CAPACITANCE
12.5
120kbps
10.0
7.5
240kbps
5.0
2 TRANSMITTER, 240kbps
2.5 4 TRANSMITTERS, 15kbps
0 3kΩ + CLOAD
-2.5
-5.0
240kbps
-7.5
-10.0
120kbps
-12.5
0
1000 2000 3000 4000 5000
LOAD CAPACITANCE (pF)
TRANSMITTER OUTPUT VOLTAGE vs.
LOAD CURRENT PER TRANSMITTER
15
10
5
T1
0
T2
-5
VCC
T3
-10
VOUT+
VOUT-
VOUT+
VOUT-
-15
0
2 4 6 8 10 12 14 16 18
LOAD CURRENT PER TRANSMITTER (mA)
SLEW RATE
vs. TEMPERATURE
25
20
FALL, 500pF
15
RISE, 500pF
10
RISE, 2000pF
5
FALL, 2000pF
0
-55 -35 -15 5 25 45 65 85 105 125
TEMPERATURE (°C)
4 _______________________________________________________________________________________
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