MAX218 Ver la hoja de datos (PDF) - Maxim Integrated
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MAX218 Datasheet PDF : 8 Pages
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1.8V to 4.25V-Powered,
True RS-232 Dual Transceiver
__________________________________________Typical Operating Characteristics
(Circuit of Figure 1, VCC = 1.8V, all transmitter outputs loaded with 3kΩ, TA = +25°C, unless otherwise noted.)
SUPPLY CURRENT vs.
SUPPLY VOLTAGE
140
1 TRANSMITTER FULL DATA RATE
120
1 TRANSMITTER 1/8 DATA RATE
RL = 3kΩ + 2500pF
100
240kbps
80
60
120kbps
40
20kbps
20
0kbps
0
1.8 2.4 3.0 3.6 4.2
SUPPLY VOLTAGE (V)
TRANSMITTING SUPPLY CURRENT
vs. LOAD CAPACITANCE
100
VCC = 2.4V
90
80 235kbps
70
TRANSMITTER 1 OPERATING
AT SPECIFIED BIT RATE,
TRANSMITTER 2 OPERATING
60
AT 1/16 THAT RATE.
120kbps
50
40
30 20kbps
20
0
1000 2000 3000 4000 5000
LOAD CAPACITANCE (pF)
TIME TO EXIT SHUTDOWN
(ONE TRANSMITTER HIGH,
ONE TRANSMITTER LOW)
SHDN
VOH
2V/div
T_OUT
VCC = 1.8V
RL = 3kΩ || 2500pF
VOL
100µs/div
TRANSMITTER OUTPUT VOLTAGE vs.
LOAD CAPACITANCE AT 120kbps
8
6
VOUT+
4
2
0
-2
-4
-6
-8
0
VOUT-
1000 2000 3000 4000 5000
LOAD CAPACITANCE (pF)
SLEW RATE vs.
TRANSMITTER CAPACITANCE
12
10
+SLEW
8
6
-SLEW
4
DATA RATE 120kbps,
2
TRANSMITTERS LOADED WITH
3kΩ PLUS INDICATED CAPACITANCE
0
0
1000 2000 3000 4000 5000
LOAD CAPACITANCE (pF)
4 _______________________________________________________________________________________
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