Datasheet

MAX3221/MAX3223/MAX3243
1µA Supply-Current, True +3V to +5.5V
RS-232 Transceivers with AutoShutdown
_______________________________________________________________________________________ 3
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.)
Note 2: C1–C4 = 0.1µF, tested at 3.3V ±10%. C1 = 0.047µF, C2–C4 = 0.33µF, tested at 5.0V ±10%.
200
Normal operation 200
Receiver Output Enable Time Normal operation ns
t
PLH
Receiver input to receiver output,
C
L
= 150pF
4 8.0 30
Transition-Region Slew Rate V/µs
V
CC
= 3.3V,
R
L
= 3kΩ to 7kΩ,
T
A
= +25°C,
measured from +3V to
-3V or -3V to +3V
Transmitter Skew
200
ns

t
PHL
- t
PLH

PARAMETER MIN TYP MAX UNITS
±25
Output Short-Circuit Current ±35 ±60 mA
Output Resistance 300 10M Ω
Output Leakage Current µA
Input Threshold Low
0.6 1.2
V
±5.0 ±5.4Output Voltage Swing V
Maximum Data Rate 120 235 kbps
Receiver Propagation Delay
0.3
µs
CONDITIONS
V
CC
= V+ = V- = 0V, transmitter output = ±2V
V
OUT
= ±12V, V
CC
= 0V or 3.0V to 5.5V,
transmitters disabled
R
L
= 3kΩ, C
L
= 1000pF, one transmitter switching
All transmitter outputs loaded with 3kΩ to ground
nsReceiver Output Disable Time
t
PHL
0.3
Input Voltage Range -25 25 V
Input Hysteresis 0.3 V
Input Threshold High V
Input Resistance 35 7kΩT
A
= +25°C
0.8 1.5
1.8 2.4
1.5 2.4
T
A
= +25°C
T
A
= +25°C
V
CC
= 3.3V
V
CC
= 3.3V
V
CC
= 5.0V
V
CC
= 5.0V
C
L
= 200pF to 2500pF
C
L
= 200pF to 1000pF 630
±5Transmitter Output Voltage V
T1IN = T2IN = GND, T3IN = V
CC
,
T3OUT loaded with 3kΩ to GND, T1OUT and
T2OUT loaded with 2.5mA each
MAX3221/MAX3223
MAX3243
200 1000
Receiver Skew
100
ns

t
PHL
- t
PLH

MAX3221/MAX3223
MAX3243
100 500
RECEIVER INPUTS
TIMING CHARACTERISTICS
TRANSMITTER OUTPUTS
MOUSE DRIVEABILITY (MAX3243)