Datasheet

MAX3322E/MAX3323E
±15kV ESD-Protected, RS-232 Transceivers for
Multidrop Applications
_______________________________________________________________________________________ 3
DC ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= 3.0V to 5.5V, V
L
= 1.65V to 5.5V, C1–C4 = 0.1µF, tested at +3.3V ±10%; C1 = 0.047µF, C2 = C3 = C4 = 0.33µF, tested at +5V
±10%; T
A
= T
MIN
to T
MAX
. Typical values are at V
CC
= V
L
= 3.3V and T
A
= +25°C, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
UNITS
V
L
= 1.65V 1 1.4
V
L
= 3.3V 1.5 2.4
Input Threshold High
V
L
= 5.0V 1.8 2.4
V
Input Hysteresis
0.35
V
RENABLE = 1 3 5 7 kΩ
Input Resistance R
IN
RENABLE = 0 or SHDN = 0V, R
IN
from -13V
to +13V
1MΩ
TRANSMITTER OUTPUTS
Output Voltage Swing
All transmitter outputs loaded with 3kΩ to
ground
±5
±5.4
V
Output Resistance
V
CC
= V+ = V- = 0, TOUT_ = ±2V,
TXENABLE = 1
300
10M
Ω
Output Short-Circuit Current V
OUT
= 0V
±60
mA
Output Leakage Current V
OUT
= ±12V, transmitters disabled
±25
µA
ESD PROTECTION
Human Body Model
±15
IEC 1000-4-2 Air-Gap Discharge
±15
RIN, TOUT
IEC 1000-4-2 Contact Discharge ±8
kV
TIMING CHARACTERISTICS
(V
CC
= 3.0V to 5.5V, V
L
= 1.65V to 5.5V, C1–C4 = 0.1µF, tested at +3.3V ±10%; C1 = 0.047µF, C2 = C3 = C4 = 0.33µF, tested at +5V
±10%; T
A
= T
MIN
to T
MAX
. Typical values are at V
CC
= V
L
= 3.3V and T
A
= +25°C, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
UNITS
Maximum Data Rate
R
L
= 3kΩ, C
L
= 1000pF, one transmitter
switching
250
kbps
t
PHL
150
Receiver Propagation Delay
t
PLH
RIN_ to ROUT_, C
L
= 30pF, V
L
= 3.3V,
Figure 2
180
ns
t
PHL
0.6
Transmitter Propagation Delay
t
PLH
TIN _ to TO U T_, R
L
= 3kΩ, C
L
= 1000p F,
Fi g ur e 1
0.7
µs
Time to Enter Three-State on Tx ( N ote 2) 10 50 µs
Time to Exit Three-State on Tx ( N ote 2) 3 50 µs
Time to Enable Resistor ( N ote 2) 0.4 10 µs
Time to Disable Resistor ( N ote 2) 0.2 10 µs
Time to Enter Shutdown 50 µs
Time to Exit Shutdown 50 µs
Transmitter Skew
100
ns
Receiver Skew 30 ns
Transition Region Slew Rate
R
L
= 3kΩ to 7kΩ, C
L
= 1000pF, measured
from +3V to -3V or vice versa
6 30 V/µs
Note 2: Guaranteed by design. Not production tested.