MAX240CMH-T Maxim Integrated, MAX240CMH-T Datasheet - Page 10

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MAX240CMH-T

Manufacturer Part Number
MAX240CMH-T
Description
RS-232 Interface IC
Manufacturer
Maxim Integrated
Series
MAX220, MAX222, MAX223, MAX225, MAX230, MAX231, MAX232, MAX232A, MAX233, MAX233A, MAX234, MAX235, MAX236, MAX237, MAX238, MAX239, MAX240, MAX241, MAX242, MAX243, MAX244, MAX245, MAX246, MAX247, MAX248, MAX249r
Datasheet

Specifications of MAX240CMH-T

Data Rate
120 Kbps
Operating Supply Voltage
5 V
Supply Current
15 mA
Operating Temperature Range
0 C to + 70 C
Mounting Style
SMD/SMT
Function
Transceiver
Maximum Operating Temperature
+ 70 C
Minimum Operating Temperature
0 C
Number Of Drivers
5
Number Of I/os
20
Number Of Receivers
5
Propagation Delay Time Ns
10 us
Shutdown
Yes
MAX220–MAX249
MAX220–MAX249
10
+5V-Powered, Multichannel RS-232
Drivers/Receivers
__________________________________________Typical Operating Characteristics
16
14
12
10
18
8
6
4
2
0
TRANSMITTER SLEW RATE
vs. LOAD CAPACITANCE
1
LOAD CAPACITANCE (nF)
EXTERNAL POWER SUPPLY
1μF CAPACITORS
2
3
40kb/s DATA RATE
8 TRANSMITTERS
LOADED WITH 3kΩ
V
4
CC
= +5V
5
MAX225/MAX244–MAX249
-10
10
-2
-4
-6
-8
8
6
4
2
0
0
V
EXTERNAL CHARGE PUMP
1μF CAPACITORS
8 TRANSMITTERS
DRIVING 5kΩ AND
2000pF AT 20kb/s
V+ AND V- LOADED
vs. LOAD CURRENT FOR V+ AND V-
V+ AND V- LOADED
CC
= +5V
5
10
OUTPUT VOLTAGE
LOAD CURRENT (mA)
15
20
EITHER V+ OR
V- LOADED
25
V- LOADED
V+ LOADED
30
35
8.5
8.0
7.5
7.0
6.5
6.0
5.5
9.0
5.0
TRANSMITTER OUTPUT VOLTAGE (V+, V-)
0
ALL CAPACITIORS 1μF
V
CC
vs. LOAD CAPACITANCE AT
= +5V WITH ALL TRANSMITTERS DRIVEN
DIFFERENT DATA RATES
1
LOAD CAPACITANCE (nF)
200kb/s
2
Maxim Integrated
3
LOADED WITH 5kΩ
100kb/s
40kb/s
10kb/s
20kb/s
60kb/s
4
5