MAX3110E_15 Datasheet, PDF (8/31 Pages) Maxim Integrated Products – SPI/MICROWIRE-Compatible UART and ±15kV ESD-Protected RS-232 Transceivers with Internal Capacitors

MAX3110E/MAX3111E
SPI/MICROWIRE-Compatible UART
and ±15kV ESD-Protected RS-232
Transceivers with Internal Capacitors
Typical Operating Characteristics
(T_A = +25°C, unless otherwise noted.)
UART SUPPLY CURRENT vs. TEMPERATURE
1000
1.8432MHz CRYSTAL
900 _{TRANSMITTING AT 115.2kbps}
800
700
600
500
400
MAX3110E, V_CC = +5V
300
200
MAX3111E, V_CC = +3.3V
100
0
-40 -20
0 20 40 60 80 100
TEMPERATURE (°C)
UART SUPPLY CURRENT vs.
EXTERNAL CLOCK FREQUENCY
700
600
500
MAX3110E
400
V_CC = +5V
300
MAX3111E
200
V_CC = +3.3V
100
0
0
1
2
3
4
5
EXTERNAL CLOCK FREQUENCY (MHz)
RS-232 TRANSMITTER OUTPUT VOLTAGE
vs. LOAD CAPACITANCE
10.0 _{TRANSMITTER 1 AT 250kbps}
7.5
TRANSMITTER 2 AT 15.6kbps
3kΩ + C_L
5.0
2.5 ^VOUT+
0
-2.5
-5.0
-7.5
-10.0
0
V_OUT-
1000 2000 3000 4000 5000
LOAD CAPACITANCE (pF)
UART SHUTDOWN CURRENT
vs. TEMPERATURE
10
1.8432MHz CRYSTAL
9
8
7
6
5
4
3
MAX3111E, V_CC = +3.3V
MAX3110E, V_CC = +5V
2
1
0
-40 -20
0 20 40 60 80 100
TEMPERATURE (°C)
MAX3110E
TX, RTS, DOUT OUTPUT CURRENT
vs. OUTPUT LOW VOLTAGE (V_CC = +5V)
90
80
70
RTS
60
TX
50
40
DOUT
30
20
10
0
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
VOLTAGE (V)
RS-232 TRANSCEIVER SUPPLY CURRENT
vs. LOAD CAPACITANCE
50 _{TRANSMITTER 1 AT DATA RATE}
45 ^{TRANSMITTER 2 AT DATA RATE}
3kΩ + C_L
16
40
35
250kbps
30
25
20
120kbps
15
10
5
20kbps
0
0 1000 2000 3000 4000 5000
LOAD CAPACITANCE (pF)
UART SUPPLY CURRENT
vs. BAUD RATE
400
350
1.8432MHz
CRYSTAL
+5V
TRANSMITTING
300
250
MAX3110E
200
+3V
TRANSMITTING
150
+5V
STANDBY
100
50
100
MAX3111E
+3V
STANDBY
1000
10k
100k
1M
BAUD RATE (bps)
MAX3111E
TX, RTS, DOUT OUTPUT CURRENT
vs. OUTPUT LOW VOLTAGE (V_CC = +3.3V)
70
60
50
RTS
TX
40
30
DOUT
20
10
0
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
VOLTAGE (V)
RS-232 TRANSMITTER SLEW RATE
vs. LOAD CAPACITANCE
16
TRANSMITTER 1 AT 250kbps
14
3kΩ + C_L
12
10
-SLEW
8
6
+SLEW
4
2
0
0 1000 2000 3000 4000 5000
LOAD CAPACITANCE (pF)
www.maximintegrated.com
Maxim Integrated | 8