鹵15kV ESD-Protected, 1碌A(chǔ), 1Mbps, 3.0V to 5.5V,
RS-232 Transceivers with AutoShutdown Plus
__________________________________________Typical Operating Characteristics
(V
CC
= +3.3V, 250kbps data rate, 0.1碌F capacitors, all transmitters loaded with 3k鈩?and C
L
, T
A
= +25擄C, unless otherwise noted.)
MAX3224E/MAX3226E
TRANSMITTER OUTPUT VOLTAGE
vs. LOAD CAPACITANCE
MAX3224-7/44/45E-01
MAX3224E鈥揗AX3227E/MAX3244E/MAX3245E
鈥?/div>
MAX3224E/MAX3226E
SLEW RATE vs. LOAD CAPACITANCE
MAX3224-7/44/45E-02
MAX3224E/MAX3226E
OPERATING SUPPLY CURRENT
vs. LOAD CAPACITANCE
40
SUPPLY CURRENT (mA)
35
30
25
20
15
10
20kbps
250kbps
120kbps
MAX3224-7/44/45E-03
TRANSMITTER OUTPUT VOLTAGE (V)
6
5
4
3
2
1
0
-1
-2
-3
-4
-5
-6
0
16
14
12
SLEW RATE (V/碌s)
10
8
6
4
+SLEW
-SLEW
45
V
OUT+
T1 TRANSMITTING AT 250kbps
T2 (MAX3224E) TRANSMITTING AT 15.6kbps
V
OUT-
1000
2000
3000
4000
5000
2
FOR DATA RATES UP TO 250kbps
0
0
1000
2000
3000
4000
5000
5
0
0
T1 TRANSMITTING AT 250kbps
T2 (MAX3224E) TRANSMITTING AT 15.6kbps
1000
2000
3000
4000
5000
LOAD CAPACITANCE (pF)
LOAD CAPACITANCE (pF)
LOAD CAPACITANCE (pF)
MAX3225E/MAX3227E
TRANSMITTER OUTPUT VOLTAGE
vs. LOAD CAPACITANCE
MAX3224-7/44/45E-04
MAX3225E/MAX3227E
SLEW RATE vs. LOAD CAPACITANCE
MAX3224-7/44/45E-05
MAX3225E/MAX3227E
OPERATING SUPPLY CURRENT
vs. LOAD CAPACITANCE
90
80
SUPPLY CURRENT (mA)
70
60
50
40
30
20
1Mbps
1 TRANSMITTER AT FULL DATA RATE
1 TRANSMITTER AT 1/16 DATA RATE
(MAX3225E)
LOAD = 3k鈩?+ C
L
2Mbps
1.5Mbps
MAX3224-7/44/45E-06
7.5
TRANSMITTER OUTPUT VOLTAGE (V)
5.0
2Mbps
2.5
0
-2.5
-5.0
-7.5
0
500
1000
1500
2000
1.5Mbps
1Mbps
1 TRANSMITTER AT FULL DATA RATE
1 TRANSMITTER AT 1/16 DATA RATE
(MAX3225E)
LOAD = 3k鈩?+ C
L
1.5Mbps 1Mbps
2Mbps
80
70
60
SLEW RATE (V/碌s)
-SLEW
50
+SLEW
40
30
20
10
0
0
1 TRANSMITTER AT 1Mbps
1 TRANSMITTER AT 62.5kbps (MAX3225E)
500
1000
1500
2000
100
10
0
2500
0
500
1000
1500
2000
2500
2500
LOAD CAPACITANCE (pF)
LOAD CAPACITANCE (pF)
LOAD CAPACITANCE (pF)
MAX3225E/MAX3227E
TRANSMITTER SKEW vs.
LOAD CAPACITANCE
45
40
TRANSMITTER SKEW (ns)
35
30
25
20
15
10
5
0
0
500
1000
1500
2000
2500
3000
LOAD CAPACITANCE (pF)
AVERAGE; 10 PARTS
1 TRANSMITTER AT 512kbps
1 TRANSMITTER AT 30kbps
(MAX3225E)
LOAD = 3k鈩?+ C
L
MAX3224-7/44/45E-07
MAX3224E鈥揗AX3227E
READY TURN-ON TIME
vs. TEMPERATURE
MAX3224-7/44/45E-08
MAX3224E鈥揗AX3227E
READY TURN-OFF TIME
vs. TEMPERATURE
180
READY TURN-OFF TIME (ns)
160
140
120
100
80
60
40
20
0
MAX3224-7/44/45E-09
50
38
36
READY TURN-ON TIME (碌s)
34
32
30
28
26
24
22
20
-40
-20
0
20
40
60
80
200
100
-40
-20
0
20
40
60
80
100
TEMPERATURE (擄C)
TEMPERATURE (擄C)
_______________________________________________________________________________________
5
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