MAX3232 查看數據表（PDF） - Tiger Electronic
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MAX3232 Datasheet PDF : 16 Pages
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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
Receiver Propagation Delay
VCC = 3.0V to 4.5V, RL = 3k&, CL =
250pF, one transmitter switching, MBAUD
= VCC
VCC = 4.5V to 5.5V, RL = 3k&, CL =
1000pF, one transmitter switching, MBAUD
= VCC
R_IN to R_OUT, CL = 150pF
tPHL
tPLH
Receiver Output Enable Time Normal operation
Receiver Output Disable Time Normal operation
Transmitter Skew
Receiver Skew
| tPHL - tPLH |, MBAUD = GND
| tPHL - tPLH |, MBAUD = VCC
| tPHL - tPLH |
Transition-Region Slew Rate
VCC = 3.3V, RL = 3& to 7k&,
+3V to -3V or -3V to +3V,
TA = +25°C
CL = 150pF
to 1000pF
MBAUD =
GND
MBAUD =
VCC
CL = 150pF to 2500pF,
MBAUD = GND
1000
1000
0.15
0.15
200
200
100
25
50
6
30
24
150
4
30
kbps
µs
ns
ns
ns
ns
ns
V/µs
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 3kΩ, TA = +25°C, unless otherwise noted.)
MAX3222/MAX3232
TRANSMITTER OUTPUT VOLTAGE
vs. LOAD CAPACITANCE
6
5
VOUT+
4
3
1
0
-1
-2
-3
-4
-5
-6
0
VOUT-
1000 2000 3000 4000
LOAD CAPACITANCE
(pF)
5000
22
20
235kbps
18
16
14
12
10
8
6
MAX3222/MAX3232
SLEW RATE
vs. LOAD CAPACITANCE
FOR DATA RATES UP TO
-SLEW
+SLEW
2
0
150
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
10
5
0
0 1000 2000 3000 4000 5000
LOAD CAPACITANCE (pF)
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