Datasheet

MAX3387E
3V, ±15kV ESD-Protected, AutoShutdown Plus
RS-232 Transceiver for PDAs and Cell Phones
_______________________________________________________________________________________ 3
DC ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= V
L
= +3.0V 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.)
AutoShutdown Plus (FORCEON = GND, FORCEOFF = V
CC
)
ESD PROTECTION
TRANSMITTER OUTPUTS
-2.7Negative threshold
Figure 3a
Positive threshold
Receiver or Transmitter Edge to
Transmitters Shutdown
t
AUTOSHDN
15 30 60 s
Receiver Positive or Negative
Threshold to INVALID Low
t
INVL
30
V
CC
= +5V, Figure 3b
Receiver or Transmitter Edge to
Transmitters Enabled
t
WU
100
µsV
CC
= +5V, Figure 3b
µsV
CC
= +5V, Figure 3b
Receiver Positive or Negative
Threshold to INVALID High
t
INVH
1 µs
INVALID Output Voltage Low
0.4
V
CC
= +5V, Figure 3b
INVALID Output Voltage High
V
L
- 0.6
VI
OUT
= -1.6mA
VI
OUT
= -1.0mA
Receiver Input Threshold to
INVALID Output Low
-0.3 0.3 V
Receiver Input Threshold to
INVALID Output High
2.7
V
Figure 3a
R_IN, T_OUT
ESD Protection
±8
kV
IEC 1000-4-2 Contact Discharge method
PARAMETER SYMBOL MIN TYP MAX UNITS
Input Hysteresis 0.5 V
Input Resistance 357kΩ
Output Voltage Swing ±5 ±5.4 V
Output Resistance 300 10M Ω
Output Short-Circuit Current ±60 mA
Output Leakage Current ±25 µA
±15
±15
CONDITIONS
T
A
= +25°C
All transmitter outputs loaded with 3kΩ to
ground
V
CC
= V+ = V- = 0V, transmitter output = ±2V
V
T
_
OUT
= 0V
V
T
_
OUT
= ±12V, transmitters disabled;
V
CC
= 0V or +3.0V to +5.5V
Human Body Model
IEC 1000-4-2 Air-Gap Discharge method
TRANSMITTER OUTPUTS
ESD PROTECTION
AutoShutdown Plus (FORCEON = GND, FORCEOFF = V
CC
)