MAX3387E_10 Datasheet, PDF (4/14 Pages) Maxim Integrated Products – 3V, ±15kV ESD-Protected, AutoShutdown Plus RS-232 Transceiver for PDAs and Cell Phones

3V, ±15kV ESD-Protected, AutoShutdown Plus
RS-232 Transceiver for PDAs and Cell Phones
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.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Maximum Data Rate
R_L = 3kΩ, C_L = 1000pF,
one transmitter switching
250
kbps
Receiver Propagation Delay
t_PHL
Receiver input to receiver output,
t_PLH
C_L = 150pF
Time to Exit Shutdown
⏐^VT_OUT⏐ ^{> +3.7V}
Transmitter Skew
⏐^tPHL ^{- t}PLH⏐ ^{(Note 2)}
Receiver Skew
⏐^tPHL ^{- t}PLH⏐
Transition-Region Slew
Rate
V_CC = +3.3V,
T_A = +25°C,
R_L = 3kΩ to 7kΩ,
measured from +3V
to -3V or -3V to +3V
C_L = 150pF to
1000pF
6
C_L = 150pF to
2500pF
4
0.15
µs
0.15
100
µs
100
ns
50
ns
30
V/µs
30
Note 2: Transmitter skew is measured at the transmitter zero crosspoints.
(V_CC = V_L = +3.3V, T_A = +25°C, unless otherwise noted.)
TRANSMITTER OUTPUT VOLTAGE
vs. LOAD CAPACITANCE
7.5
5.0
DATA RATE = 250kbps
2.5
LOAD = 3kΩ IN PARALLEL WITH C_L
0
-2.5
-5.0
-7.5
0
1000 2000 3000 4000 5000
LOAD CAPACITANCE (pF)
Typical Operating Characteristics
SLEW RATE vs. LOAD CAPACITANCE
16
14
12
SLEW RATE -
10
8
SLEW RATE +
6
4
2
0
0 1000 2000 3000 4000 5000
LOAD CAPACITANCE (pF)
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