MAX220–MAX249
+5V-Powered, Multichannel RS-232
Drivers/Receivers
ELECTRICAL CHARACTERISTICS—MAX223/MAX230–MAX241 (continued)
(MAX223/230/232/234/236/237/238/240/241, V
= +5V 10ꢀ% MAX233/MAX235, V
= +5V 5ꢀ‚ C1ꢁC4 = 1.0ꢂµ%
CC
CC
MAX231/MAX239, V
= +5V 10ꢀ% V+ = +7.5V to +13.2V% T = T
to T
% unless otherwise noted.) (Note 5)
MAX
CC
A
MIN
PARAMETER
CONDITIONS
MIN
TYP
MAX UNITS
Normal operation
V
V
= +5V (MAX223)
= 0V (MAX235/236/240/241)
0.8
1.2
SHDN
SHDN
T
V
= +25°C,
A
RS-232 Input Logic-Low Voltage
V
= +5V
CC
Shutdown (MAX223)
V
V
= 0V,
= +5V (R4IN, R5IN)
0.6
1.5
1.7
1.5
SHDN
EN
Normal operation
V
V
= 5V (MAX223)
= 0V (MAX235/236/240/241)
2.4
SHDN
SHDN
T
V
= +25°C,
A
RS-232 Input Logic-High Voltage
V
= +5V
CC
Shutdown (MAX223)
V
V
= 0V,
= +5V (R4IN‚ R5IN)
2.4
SHDN
EN
RS-232 Input Hysteresis
V
= +5V, no hysteresis in shutdown
= +5V
0.2
3
0.5
5
1.0
7
V
kΩ
V
CC
RS-232 Input Resistance
T
A
= +25°C, V
CC
TTL/CMOS Output Voltage Low
TTL/CMOS Output Voltage High
I
I
= 1.6mA (MAX231/232/233, I = 3.2mA)
OUT
0.4
OUT
OUT
= -1mA
3.5
V
- 0.4
V
CC
0V ≤ R
EN
≤ V % V = 0V (MAX223)%
CC EN
OUT
TTL/CMOS Output Leakage Current
Receiver Output Enable Time
0.05
10
ꢂA
ns
V
= V
(MAX235ꢁ241)
CC
MAX223
600
400
900
250
0.5
4
Normal
operation
MAX235/236/239/240/241
MAX223
Normal
operation
Receiver Output Disable Time
Propagation Delay
ns
ꢂs
MAX235/236/239/240/241
Normal operation
10
40
40
RS-232 IN to
TTL/CMOS OUT,
C = 150pµ
L
t
PHLS
PLHS
V
= 0V
SHDN
(MAX223)
t
6
MAX223/MAX230/MAX234ꢁ241, T = +25°C, V = +5V,
A
CC
R = 3kΩ to 7kΩ‚ C = 50pµ to 2500pµ, measured from
3
5.1
4
30
30
L
L
+3V to -3V or -3V to +3V
Transition Region Slew Rate
Transmitter Output Resistance
V/ꢂs
MAX231/MAX232/MAX233, T = +25°C, V
= +5V,
CC
A
R = 3kΩ to 7kΩ, C = 50pµ to 2500pµ, measured from
L
L
+3V to -3V or -3V to +3V
V
CC
= V+ = V- = 0V, V
=
OUT
2V
300
Ω
Transmitter Output Short-Circuit
Current
10
mA
mA
Note 5: All units are production tested at hot except for the MAX240, which is production tested at T = +25°C. Specifications over
A
temperature are guaranteed by design.
6
Maxim Integrated
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
