MAX218 Maxim, MAX218 Datasheet - Page 4
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MAX218
Manufacturer Part Number
MAX218
Description
1.8V to 4.25V-Powered / True RS-232 Dual Transceiver
Manufacturer
Maxim
Datasheet
1.MAX218.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, V
4
_______________________________________________________________________________________
140
120
100
-2
-4
-6
-8
80
60
40
20
8
6
4
2
0
0
0
TRANSMITTER OUTPUT VOLTAGE vs.
CC
1.8
LOAD CAPACITANCE AT 120kbps
1000
20kbps
0kbps
= 1.8V, all transmitter outputs loaded with 3kΩ, T
1 TRANSMITTER FULL DATA RATE
1 TRANSMITTER 1/8 DATA RATE
R
LOAD CAPACITANCE (pF)
SUPPLY CURRENT vs.
L
240kbps
120kbps
SUPPLY VOLTAGE (V)
= 3k + 2500pF
2.4
SUPPLY VOLTAGE
2000
3.0
3000
V
V
3.6
OUT+
OUT-
4000
2V/div
4.2
5000
V
R
CC =
L
= 3k || 2500pF
TIME TO EXIT SHUTDOWN
(ONE TRANSMITTER HIGH,
ONE TRANSMITTER LOW)
1.8V
100 s/div
A
= +25°C, unless otherwise noted.)
100
90
80
70
60
50
40
30
20
10
12
8
6
4
2
0
0
0
V
235kbps
120kbps
20kbps
SHDN
V
T_OUT
V
DATA RATE 120kbps,
TRANSMITTERS LOADED WITH
3k PLUS INDICATED CAPACITANCE
CC
TRANSMITTING SUPPLY CURRENT
OH
OL
= 2.4V
1000
TRANSMITTER CAPACITANCE
1000
vs. LOAD CAPACITANCE
LOAD CAPACITANCE (pF)
LOAD CAPACITANCE (pF)
-SLEW
TRANSMITTER 1 OPERATING
AT SPECIFIED BIT RATE,
TRANSMITTER 2 OPERATING
AT 1/16 THAT RATE.
SLEW RATE vs.
2000
2000
+SLEW
3000
3000
4000
4000
5000
5000