+5V-Powered, Multichannel RS-232
Drivers/Receivers
ELECTRICAL CHARACTERISTICS—MAX220/222/232A/233A/242/243 (continued)
(V
CC
= +5V ±10%, C1–C4 = 0.1µF‚ MAX220, C1 = 0.047µF, C2–C4 = 0.33µF, T
A
= T
MIN
to T
MAX
‚ unless otherwise noted.)
PARAMETER
TTL/CMOS Output Leakage Current
EN
Input Threshold Low
EN
Input Threshold High
Operating Supply Voltage
No load
V
CC
Supply Current (SHDN = V
CC
),
Figures 5, 6, 11, 19
3kΩ load
both inputs
MAX220
MAX222/232A/233A/242/243
MAX220
MAX222/232A/233A/242/243
T
A
= +25°C
Shutdown Supply Current
MAX222/242
T
A
= 0°C to +70°C
T
A
= -40°C to +85°C
T
A
= -55°C to +125°C
SHDN
Input Leakage Current
SHDN
Threshold Low
SHDN
Threshold High
MAX222/242
MAX222/242
MAX222/242
C
L
= 50pF to 2500pF,
MAX222/232A/233A/242/243
R
L
= 3kΩ to 7kΩ,
V
CC
= 5V, T
A
= +25°C,
measured from +3V MAX220
to -3V or -3V to +3V
MAX222/232A/233A/242/243
t
PHLT
MAX220
t
PLHT
t
PHLR
t
PLHR
t
PHLS
t
PLHS
MAX222/232A/233A/242/243
MAX220
MAX222/232A/233A/242/243
MAX220
MAX222/232A/233A/242/243
MAX220
MAX242
MAX242
MAX242
MAX242
MAX222/242, 0.1µF caps
(includes charge-pump start-up)
MAX222/242, 0.1µF caps
MAX222/232A/233A/242/243
MAX220
MAX222/232A/233A/242/243
MAX220
2.0
6
1.5
1.4
1.4
12
3
1.3
4
1.5
5
0.5
0.6
0.6
0.8
0.5
2.5
125
160
250
600
300
2000
100
225
30
V/µs
30
3.5
10
3.5
10
1
3
1
3
10
10
500
500
µs
ns
ns
µs
ns
ns
ns
µs
µs
CONDITIONS
SHDN
= V
CC
or
EN
= V
CC
(SHDN = 0V for MAX222),
0V
≤
V
OUT
≤
V
CC
MAX242
MAX242
2.0
4.5
0.5
4
12
15
0.1
2
2
35
10
50
50
100
±1
0.8
µA
V
V
µA
MIN
TYP
±0.05
1.4
1.4
5.5
2
10
mA
MAX
±10
0.8
UNITS
µA
V
V
V
MAX220–MAX249
Transition Slew Rate
Transmitter Propagation Delay
TLL to RS-232 (normal operation),
Figure 1
Receiver Propagation Delay
RS-232 to TLL (normal operation),
Figure 2
Receiver Propagation Delay
RS-232 to TLL (shutdown), Figure 2
Receiver-Output Enable Time, Figure 3 t
ER
Receiver-Output Disable Time, Figure 3 t
DR
Transmitter-Output Enable Time
(SHDN goes high), Figure 4
Transmitter-Output Disable Time
(SHDN goes low), Figure 4
Transmitter + to - Propagation
Delay Difference (normal operation)
Receiver + to - Propagation
Delay Difference (normal operation)
t
ET
t
DT
t
PHLT
- t
PLHT
t
PHLR
- t
PLHR
Note 3:
MAX243 R2
OUT
is guaranteed to be low when R2
IN
is
≥
0V or is floating.
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3
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
