Datasheet

-7.5
-5.0
-2.5
0
2.5
5.0
7.5
0 1000 2000 3000 4000 5000
TRANSMITTER OUTPUT VOLTAGE
vs. LOAD CAPACITANCE
MAX3387E-01
LOAD CAPACITANCE (pF)
OUTPUT VOLTAGE (V)
DATA RATE = 250kbps
LOAD = 3kΩ IN PARALLEL WITH C
L
0
2
4
6
8
10
12
14
16
0 1000 2000 3000 4000 5000
SLEW RATE vs. LOAD CAPACITANCE
MAX3387E-02
LOAD CAPACITANCE (pF)
SLEW RATE (V/µs)
SLEW RATE +
SLEW RATE -
Typical Operating Characteristics
(V
CC
= V
L
= +3.3V, T
A
= +25°C, unless otherwise noted.)
C
L
= 150pF to
1000pF
C
L
= 150pF to
2500pF
V
CC
= +3.3V,
T
A
= +25°C,
R
L
= 3kΩ to 7kΩ,
measured from +3V
to -3V or -3V to +3V
R
L
= 3kΩ, C
L
= 1000pF,
one transmitter switching
(Note 2)
V/µs
430
⏐
V
T_OUT
⏐
> +3.7V
Transition-Region Slew
Rate
Receiver input to receiver output,
C
L
= 150pF
CONDITIONS
630
ns50
⏐
t
PHL
- t
PLH
⏐
Receiver Skew
ns100
⏐
t
PHL
- t
PLH
⏐
Transmitter Skew
µs
100Time to Exit Shutdown
µs
0.15t
PLH
Receiver Propagation Delay
kbps250Maximum Data Rate
0.15t
PHL
UNITSMIN TYP MAXSYMBOLPARAMETER
TIMING CHARACTERISTICS
(V
CC
= V
L
= +3V to +5.5V; C1–C4 = 0.1µF, tested at +3.3V ±10%; C1 = 0.047µF, C2–C4 = 0.33µF, tested at +5.0V ±10%; T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V
CC
= V
L
= +3.3V, T
A
= +25°C.)
MAX3387E
3V, ±15kV ESD-Protected, AutoShutdown Plus
RS-232 Transceiver for PDAs and Cell Phones
4 _______________________________________________________________________________________
Note 2: Transmitter skew is measured at the transmitter zero crosspoints.