3.0V to 5.5V, Low-Power, up to 1Mbps, True RS-232Transceivers Using Four 0.1µF External Capacitors
MAX3222/MAX3232/MAX3237/MAX3241
TIMING CHARACTERISTICS—MAX3237
(VCC= +3.0V to +5.5V, C1–C4 = 0.1µF (Note 2), TA= TMINto TMAX, unless otherwise noted. Typical values are at TA= +25°C.)
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 testedat 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
MAX3222/MAX3232
SLEW RATE
vs. LOAD CAPACITANCE
2018SLEW RATE (V/µs)
1614121086
420
5000
150
1000
2000
3000
4000
5000
MAX3222/MAX3232
SUPPLY CURRENT vs. LOAD CAPACITANCE
WHEN TRANSMITTING DATA
35SUPPLY CURRENT (mA)
3025
2015
1050
1000
2000
3000
4000
5000
TRANSMITTER OUTPUT VOLTAGE (V)
6543210-1-2-3-4-5-6
1000
2000
3000
2240
4000
LOAD CAPACITANCE (pF)LOAD CAPACITANCE (pF)LOAD CAPACITANCE (pF)
4_______________________________________________________________________________________
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