Datasheet

MAX3212
+2.7V to +3.6V-Powered, 1µA Supply Current,
3-Driver/5-Receiver, True RS-232 Transceiver
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= 2.7V to 3.6V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
TIMING CHARACTERISTICS
(V
CC
= 2.7V to 3.6V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
PARAMETER
Receiver Propagation Delay
630 2000
MIN TYP MAX
ns150pF load
UNITS
800 2000
Data Rate
Transmitter Propagation Delay
800 2000
ns
Transmitter Output Disable Time
2500pF  3kΩ load
600 ns
235 250 kbps
630 2000
Transmitter Output Enable Time
R
L
= 3kΩ, C
L
= 1000pF, one transmitter
switching, 150pF load on each receiver
250 µs
SYMBOL
t
PLHR
t
PHLT
t
PLHT
t
DT
t
PHLR
t
ET
t
ER
t
DR
Receiver Output Enable Time 70 200 ns
Receiver Output Disable Time 420 700 ns
CONDITIONS
Includes power-supply start-up
V/µsTransition-Region Slew Rate
5 µs
EN High to TRAN
Reset Delay
1 µsEN High Pulse Width
R
L
= 3kΩ to 7kΩ,
measured from +3V
to -3V or -3V to +3V
C
L
= 50pF to 2500pF
C
L
= 50pF to 1000pF 61330
4.0 10 30
Receiver Skew ns

t
PHL -
t
PLH

40
52Transmitter Skew ns

t
PHL -
t
PLH

EIA/TIA-232E TRANSMITTERS
Input Voltage Threshold High
3.0
V
Input Hysteresis 0.7 V
Output Voltage Swing (V
HIGH
, V
LOW
) ±5.0 ±5.5 V
Output Resistance 300 Ω
EIA/TIA-232E Short-Circuit Current 28 60 mA
All transmitters loaded with 3kΩ to GND
V
CC
= V- = V+ = 0V, -2V < T_OUT < 2V
PARAMETER MIN TYP MAX UNITS
Input Voltage Threshold Low 0.4 V
Input Resistance 357kΩ
CONDITIONS
-15V < V
IN
< 15V
Input Voltage Operating Range -25 +25 V
TIN = T2IN = GND, T3IN = V
CC
,
T3OUT loaded with 3kΩ to GND,
T1OUT and T2OUT loaded with 5mA
Transmitter Output Voltage ±5 V
EIA/TIA-232E RECEIVERS
EIA/TIA-232E TRANSMITTERS
MOUSE DRIVEABILITY