+5V-Powered, Multichannel RS-232
Drivers/Receivers
ELECTRICAL CHARACTERISTICS—MAX220/222/232A/233A/242/243 (continued)
(V
= +5V ±±0ꢀ, C±–C4 = 0.±µꢁF MAX220, C± = 0.047µꢁ, C2–C4 = 0.33µꢁ, T = T
to T
F unless otherwise noted.)
MAX
CC
A
MIN
PARAMETER
CONDITIONS
MIN
TYP
0.5
0.6
0.6
0.8
0.5
MAX
UNITS
MAX222/MAX232A/MAX233/
MAX242/MAX243
±
3
t
t
PHLR
PLHR
MAX220
Receiver Propagation Delay RS-232 to
TLL (Normal Operation), ꢁigure 2
µs
MAX222/MAX232A/MAX233/
MAX242/MAX243
±
MAX220
3
t
t
MAX242
±0
PHLS
Receiver Propagation Delay RS-232 to
TLL (Shutdown), ꢁigure 2
µs
MAX242
2.5
±0
PHLS
Receiver-Output Enable Time, ꢁigure 3
Receiver-Output Disable Time, ꢁigure 3
t
t
MAX242
MAX242
±25
±60
500
500
ns
ns
ER
DR
MAX222/MAX242, 0.±µꢁ
caps (includes charge-pump
start-up)
Transmitter-Output Enable Time (SHDN
Goes High), ꢁigure 4
t
t
250
µs
ns
ET
DT
Transmitter-Output Disable Time (SHDN
Goes Low), ꢁigure 4
MAX222/MAX242,
0.±µꢁ caps
600
300
MAX222/MAX232A/MAX233/
MAX242/MAX243
Transmitter + to - Propagation Delay
Difference (Normal Operation)
t
- t
ns
PHLT PLHT
MAX220
2000
MAX222/MAX232A/MAX233/
MAX242/MAX243
±00
225
Receiver + to - Propagation Delay
Difference (Normal Operation)
t
- t
ns
PHLR PLHR
MAX220
__________________________________________Typical Operating Characteristics
MAX220/MAX222/MAX232A/MAX233A/MAX242/MAX243
AVAILABLE OUTPUT CURRENT
vs. DATA RATE
MAX222/MAX242
ON-TIME EXITING SHUTDOWN
OUTPUT VOLTAGE vs. LOAD CURRENT
10
8
11
10
+10V
1µF
V+
OUTPUT LOAD CURRENT
FLOWS FROM V+ TO V-
1µF CAPS
EITHER V+ OR V- LOADED
V+
6
0.1µF CAPS
+5V
+5V
ALL CAPS
0.1µF
V
= 5V
CC
9
8
7
6
5
4
4
1µF
NO LOAD ON
TRANSMITTER OUTPUTS
(EXCEPT MAX220, MAX233A)
SHDN
V
= +5.25V
= +4.75V
0V
0V
2
0
CC
ALL CAPS
0.1µF
V- LOADED, NO LOAD ON V+
-2
-4
-6
-8
-10
V
CC
1µF CAPS
0.1µF
1µF
0.1µF CAPS
V-
V-
V+ LOADED, NO LOAD ON V-
10 15 20 25
LOAD CURRENT (mA)
-10V
0
5
0
10
20
30
40
50
60
500µs/div
DATA RATE (kbits/sec)
4
_______________________________________________________________________________________
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
