Datasheet

MAX3388E/MAX3389E
2.5V, ±15kV ESD-Protected RS-232
Transceivers for PDAs and Cell Phones
_______________________________________________________________________________________ 3
TIMING CHARACTERISTICS
(V
CC
= V
L
= +2.35V to +3.0V, C1–C4 = 0.1µF, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V
CC
= V
L
= +2.5V,
T
A
= +25°C.)

t
PHL
- t
PLH

Note 2: Guaranteed by correlation.
Note 3: Transmitter skew is measured at the transmitter zero crosspoint.
DC ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= V
L
= +2.35V to +3.0V, C1–C4 = 0.1µF, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V
CC
= V
L
= +2.5V,
T
A
= +25°C.)
PARAMETER
Maximum Data Rate
Receiver Propagation Delay
Receiver Output Enable Time
Receiver Output Disable Time
Time to Exit Shutdown
Transmitter Skew
Receiver Skew
Transition-Region Slew
Rate

t
PHL
- t
PLH

t
PLH
t
PHL
SYMBOL CONDITIONS
R
L
= 3kΩ, C
L
= 1000pF,
one transmitter switching
Receiver input to receiver output,
C
L
= 150pF

V
T_OUT

> 3.7V
R
L
= 3kΩ, C
L
= 1000pF (Note 3)
V
CC
= +2.5V, T
A
= +25°C,
R
L
= 3kΩ to 7kΩ,
measured from +3V
to -3V or -3V to +3V,
one transmitter switching
C
L
= 150pF to
1000pF
C
L
= 150pF to
2500pF
430
630
50
100
30
200
200
0.15
0.15
250
MIN TYP MAX UNITS
kbps
µs
ns
ns
µs
ns
ns
V/µs
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Output Leakage Current
V
T_OUT
= ±12V, transmitters disabled,
V
CC
= 0 or +2.5V
±25 µA
HANDSHAKING I/O (LIN, LOUT)
Input Voltage Range 0V
CC
V
Input Threshold Low LIN, V
L
= +2.5V, T
A
= +25°C 0.6 1.1 V
Input Threshold High LIN, V
L
= +2.5V, T
A
= +25°C 1.7 2 V
Input Hysteresis 0.6 V
Input Resistance T
A
= +25
o
C2040kΩ
Output Voltage Low LOUT, I
SINK
= 1.6mA 0.4 V
Output Leakage Current LOUT = V
L
, LIN = low or float ±10 µA
SWITCH (SWIN, SWOUT)
Input Voltage Range 0V
CC
V
On-Resistance 62 100 Ω
Off-Leakage Current SHDN = 0 ±1µA
Turn-On Time 0.18 µs
Turn-Off Time 0.7 µs
ESD PROTECTION
Human Body Model ±15
IEC 1000-4-2 Air-Gap Discharge method ±15
R_IN, T_OUT, LIN, SWIN
ESD Protection
IEC 1000-4-2 Contact Discharge method ±8
kV
R
L
= 3kΩ, C
L
= 150pF,
one transmitter switching (Note 2)
460

t
PHL
- t
PLH
