MAX3221/MAX3223/MAX3243
+3V to +5.5V RS-232 Transceivers
with AutoShutdown
Electrical Characteristics (continued)
(V
CC
= +3.0V to +5.5V, C1–C4 = 0.1µF (Note 2), T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
RECEIVER INPUTS
Input Voltage Range
Input Threshold Low
Input Threshold High
Input Hysteresis
Input Resistance
TRANSMITTER OUTPUTS
Output Voltage Swing
Output Resistance
Output Short-Circuit Current
Output Leakage Current
V
OUT
= ±12V, V
CC
= 0V or 3.0V to 5.5V,
transmitters disabled
All transmitter outputs loaded with 3kΩ to ground
V
CC
= V+ = V- = 0V, transmitter output = ±2V
±5.0
300
±5.4
10M
±35
±60
±25
V
Ω
mA
µA
T
A
= +25°C
3
T
A
= +25°C
T
A
= +25°C
V
CC
= 3.3V
V
CC
= 5.0V
V
CC
= 3.3V
V
CC
= 5.0V
-25
0.6
0.8
1.2
1.5
1.5
1.8
0.3
5
7
2.4
2.4
25
V
V
V
V
kΩ
CONDITIONS
MIN
TYP
MAX
UNITS
MOUSE DRIVEABILITY
(MAX3243)
Transmitter Output Voltage
TIMING CHARACTERISTICS
Maximum Data Rate
Receiver Propagation Delay
Receiver Output Enable Time
Receiver Output Disable Time
Transmitter Skew
Receiver Skew
R
L
= 3kΩ, C
L
= 1000pF, one transmitter switching
Receiver input to receiver output,
C
L
= 150pF
Normal operation
Normal operation
⏐
t
PHL
- t
PLH
⏐
⏐
t
PHL
- t
PLH
⏐
V
CC
= 3.3V,
R
L
= 3kΩ to 7kΩ,
T
A
= +25°C,
measured from +3V to
-3V or -3V to +3V
MAX3221/MAX3223
MAX3243
MAX3221/MAX3223
MAX3243
C
L
= 200pF to 2500pF
4
t
PHL
t
PLH
120
235
0.3
0.3
200
200
200
200
100
100
8.0
500
30
V/µs
C
L
= 200pF to 1000pF
6
30
1000
kbps
µs
ns
ns
ns
ns
T1IN = T2IN = GND, T3IN = V
CC
,
T3OUT loaded with 3kΩ to GND, T1OUT and
T2OUT loaded with 2.5mA each
±5
V
Transition-Region Slew Rate
Note 2:
C1–C4 = 0.1µF, tested at 3.3V ±10%. C1 = 0.047µF, C2–C4 = 0.33µF, tested at 5.0V ±10%.
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