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MAX3238E Datasheet(PDF) 4 Page - Maxim Integrated Products

Part No. MAX3238E
Description  3.0V to 5.5V, 10nA, 250kbps RS-232 Transceivers with ±15kV ESD-Protected I/O and Logic Pins
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Maker  MAXIM [Maxim Integrated Products]
Homepage  http://www.maxim-ic.com
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MAX3238E Datasheet(HTML) 4 Page - Maxim Integrated Products

 
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-6
-2
-4
2
0
4
6
-5
-3
1
-1
3
5
0
1000
1500
500
2000
2500
3000
TRANSMITTER OUTPUT VOLTAGE
vs. LOAD CAPACITANCE
LOAD CAPACITANCE (pF)
VOUT-
VOUT+
FOR DATA RATES UP TO 250kbps
1 TRANSMITTER 250kbps
4 TRANSMITTERS 15.6kbps
ALL TRANSMITTERS LOADED
WITH 3k
Ω + CL
0
4
2
8
6
10
12
0
1000
1500
500
2000
2500
3000
SLEW RATE vs. LOAD CAPACITANCE
LOAD CAPACITANCE (pF)
SR+
SR-
1 TRANSMITTER 250kbps
4 TRANSMITTERS 15.6kbps
ALL TRANSMITTERS LOADED
WITH 3k
Ω + CL
50
20
10
0
0
1000
500
2000
3000
SUPPLY CURRENT vs. LOAD CAPACITANCE
WHEN TRANSMITTING DATA
30
LOAD CAPACITANCE (pF)
1500
2500
40
250kbps
20kbps
120kbps
1 TRANSMITTER 20kbps, 120 kbps, 250kbps
4 TRANSMITTERS 15.6kbps
ALL TRANSMITTERS LOADED
WITH 3k
Ω + CL
__________________________________________Typical Operating Characteristics
(VCC = +3.3V, 250kbps data rate, 0.1µF capacitors, all transmitters loaded with 3k
Ω, TA = +25°C, unless otherwise noted.)
+3.0V to +5.5V, 10nA, 250kbps RS-232 Transceivers
with ±15kV ESD-Protected I/O and Logic Pins
4
_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(VCC = +3.0V to +5.5V, C1–C4 = 0.1µF (tested at 3.3V ±5%), C1–C4 = 0.22µF (tested at 3.3V ±10%), C1 = 0.047µF, and
C2–C4 = 0.33µF (tested at 5.0V ±10%), TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)
Note 2: The transmitter inputs have an active positive feedback resistor. The input current goes to zero when the inputs are at the
supply rails.
Note 3: During AutoShutdown only, a transmitter/receiver edge is defined as a transition through the transmitter/receiver input logic
wake-up thresholds.
CONDITIONS
UNITS
MIN
TYP
MAX
PARAMETER
| tPHL - tPLH |
430
tPHL
R_IN to R_OUT,
CL = 150pF
tPLH
CL = 150pF to 1000pF
RL = 3k
Ω, CL = 1000pF, one transmitter switching
CL = 150pF to 2500pF
0.15
VCC = 3.3V,
TA = +25°C,
RL = 3k
Ω to 7kΩ,
measured from +3V to
-3V or -3V to +3V
Normal operation
Normal operation
| tPHL - tPLH |
µs
0.15
Receiver Propagation Delay
kbps
250
Maximum Data Rate
V/µs
630
Transition-Region Slew Rate
µs
2.6
Receiver Output Enable Time
µs
2.4
Receiver Output Disable Time
ns
50
ns
50
Receiver Skew
Transmitter Skew
TIMING CHARACTERISTICS


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