+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
MAX UNITS
SHDN = V or EN = V (SHDN = 0V for MAX222),
CC
CC
TTL/CMOS Output Leakage Current
±0.05
±±0
0.8
µA
0V ≤ V
≤ V
OUT
CC
MAX242
MAX242
±.4
±.4
V
V
V
EN Input Threshold Low
EN Input Threshold High
Operating Supply Voltage
2.0
4.5
5.5
2
MAX220
0.5
4
No load
MAX222/232A/233A/242/243
MAX220
±0
V
CC
Supply Current (SHDN = V ),
CC
mA
µA
ꢁigures 5, 6, ±±, ±9
±2
±5
0.±
2
3kΩ load
both inputs
MAX222/232A/233A/242/243
T
A
T
A
T
A
T
A
= +25°C
±0
50
= 0°C to +70°C
= -40°C to +85°C
= -55°C to +±25°C
Shutdown Supply Current
MAX222/242
2
50
35
±00
±±
0.8
MAX222/242
MAX222/242
MAX222/242
µA
V
SHDN Input Leakage Current
SHDN Threshold Low
±.4
±.4
2.0
6
V
SHDN Threshold High
C = 50pꢁ to 2500pꢁ,
L
MAX222/232A/233A/242/243
MAX220
±2
3
30
30
R = 3kΩ to 7kΩ,
L
Transition Slew Rate
V
CC
= 5V, T = +25°C,
V/µs
µs
A
measured from +3V
to -3V or -3V to +3V
±.5
MAX222/232A/233A/242/243
MAX220
±.3
4
3.5
±0
3.5
±0
±
t
t
t
t
PHLT
PLHT
PHLR
PLHR
Transmitter Propagation Delay
TLL to RS-232 (normal operation),
ꢁigure ±
MAX222/232A/233A/242/243
MAX220
±.5
5
MAX222/232A/233A/242/243
MAX220
0.5
0.6
0.6
0.8
0.5
2.5
±25
±60
Receiver Propagation Delay
RS-232 to TLL (normal operation),
ꢁigure 2
3
µs
µs
MAX222/232A/233A/242/243
MAX220
±
3
t
t
t
t
MAX242
±0
±0
500
500
PHLS
PLHS
ER
Receiver Propagation Delay
RS-232 to TLL (shutdown), ꢁigure 2
MAX242
Receiver-Output EnableTime, ꢁigure 3
Receiver-Output DisableTime, ꢁigure 3
MAX242
ns
ns
MAX242
DR
Transmitter-Output Enable Time
(SHDN goes high), ꢁigure 4
MAX222/242, 0.±µꢁ caps
(includes charge-pump start-up)
t
t
t
t
250
600
µs
ns
ns
ns
ET
Transmitter-Output Disable Time
(SHDN goes low), ꢁigure 4
MAX222/242, 0.±µꢁ caps
DT
MAX222/232A/233A/242/243
MAX220
300
2000
±00
Transmitter + to - Propagation
Delay Difference (normal operation)
- t
PHLT PLHT
MAX222/232A/233A/242/243
MAX220
Receiver + to - Propagation
Delay Difference (normal operation)
- t
PHLR PLHR
225
Note 3: MAX243 R2
is guaranteed to be low when R2 is ≥ 0V or is floating.
IN
OUT
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3
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
