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MAX3237EEAI View Datasheet(PDF) - Maxim Integrated

Part Name
Description
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MAX3237EEAI Datasheet PDF : 17 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
MAX3222/MAX3232/MAX3237/MAX3241
3.0V to 5.5V, Low-Power, up to 1Mbps, True RS-232
Transceivers Using Four 0.1µF External Capacitors
TIMING CHARACTERISTICS—MAX3237
(VCC = +3.0V to +5.5V, C1–C4 = 0.1µF (Note 2), TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
CONDITIONS
MIN TYP MAX
UNITS
RL = 3k, CL = 1000pF, one transmitter switching,
MBAUD = GND
250
Maximum Data Rate
VCC = 3.0V to 4.5V, RL = 3k, CL = 250pF,
one transmitter switching, MBAUD = VCC
1000
kbps
VCC = 4.5V to 5.5V, RL = 3k, CL = 1000pF,
one transmitter switching, MBAUD = VCC
1000
tPHL
Receiver Propagation Delay R_IN to R_OUT, CL = 150pF
tPLH
Receiver Output Enable Time Normal operation
0.15
µs
0.15
200
ns
Receiver Output Disable Time Normal operation
200
ns
Transmitter Skew
Receiver Skew
| tPHL - tPLH |, MBAUD = GND
| tPHL - tPLH |, MBAUD = VCC
| tPHL - tPLH |
100
ns
25
ns
50
ns
MBAUD =
CL = 150pF GND
6
Transition-Region Slew Rate
VCC = 3.3V, RL = 3to 7k, to 1000pF
+3V to -3V or -3V to +3V,
TA = +25°C
MBAUD =
VCC
24
CL = 150pF to 2500pF,
MBAUD = GND
4
30
150
V/µs
30
Note 2: MAX3222/MAX3232/MAX3241: C1–C4 = 0.1µF tested at 3.3V ±10%; C1 = 0.047µF, C2–C4 = 0.33µF tested at 5.0V ±10%.
MAX3237: C1–C4 = 0.1µF tested at 3.3V ±5%; C1–C4 = 0.22µF tested at 3.3V ±10%; C1 = 0.047µF, C2–C4 = 0.33µF tested
at 5.0V ±10%.
Note 3: Transmitter input hysteresis is typically 250mV.
__________________________________________Typical Operating Characteristics
(VCC = +3.3V, 235kbps data rate, 0.1µF capacitors, all transmitters loaded with 3k, TA = +25°C, unless otherwise noted.)
MAX3222/MAX3232
TRANSMITTER OUTPUT VOLTAGE
vs. LOAD CAPACITANCE
6
5
VOUT+
4
3
2
1
0
-1
-2
-3
-4
VOUT-
-5
-6
0
1000 2000 3000 4000 5000
LOAD CAPACITANCE (pF)
22
20
18
16
14
12
10
8
6
4
2
0
150
MAX3222/MAX3232
SLEW RATE
vs. LOAD CAPACITANCE
FOR DATA RATES UP TO 235kbps
-SLEW
+SLEW
1000 2000 3000 4000
LOAD CAPACITANCE (pF)
5000
MAX3222/MAX3232
SUPPLY CURRENT vs. LOAD CAPACITANCE
WHEN TRANSMITTING DATA
40
35
235kbps
30
25
120kbps
20
15
20kbps
10
5
0
0
1000 2000 3000 4000 5000
LOAD CAPACITANCE (pF)
4
Maxim Integrated
 

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