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MAX3325 Datasheet(PDF) 4 Page - Maxim Integrated Products

Part No. MAX3325
Description  3V Dual RS-232 Transceiver with LCD Supply and Contrast Controller
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Maker  MAXIM [Maxim Integrated Products]
Homepage  http://www.maxim-ic.com
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 4 page
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3V Dual RS-232 Transceiver with
LCD Supply and Contrast Controller
4
_______________________________________________________________________________________
-6
-2
-4
2
0
4
6
0
2000
1000
3000
4000
5000
TRANSMITTER OUTPUT VOLTAGE vs.
LOAD CAPACITANCE
LOAD CAPACITANCE (pF)
T1 TRANSMITTING AT 250kbps
T2 TRANSMITTING AT 15.6kbps
-5
-1
-3
3
1
5
VOUT+
VOUT-
0
4
2
8
6
12
10
14
0
2000
1000
3000
4000
5000
SLEW RATE vs. LOAD CAPACITANCE
LOAD CAPACITANCE (pF)
FOR DATA RATES
UP TO 250kbps
0
10
30
20
40
50
0
1000
2000
3000
4000
5000
SUPPLY CURRENT vs. LOAD
CAPACITANCE (T1 = 20kbps)
LOAD CAPACITANCE (pF)
T2 = 120kbps
T2 = 250kbps
T2 = 20kbps
Typical Operating Characteristics
(VDD = VL = +3.3V, circuit and components of Figure 1, all transmitters loaded with 3kΩ,TA = +25°C, unless otherwise noted.)
TIMING CHARACTERISTICS
(VDD = +3.0V to +3.6V, VL = +3.3V, circuit and components of Figure 1, TA = TMIN to TMAX, unless otherwise noted. Typical values
are at VDD = +3.3V, TA = +25°C.)
Note 2: Guaranteed by design and not production tested.
Note 3: No load on REG or transmitter outputs.
tPLH
300
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
Transition-Region Slew Rate
630
V/µs
Transmitter Skew
| tPLH - tPHL |
200
ns
Receiver Propagation Delay
Maximum Data Rate
250
kbps
tPHL
300
ns
Receiver Skew
| tPLH - tPHL |
300
ns
CONDITIONS
VDD = 3.3V, TA = +25°C, RL = 3kΩ to
7k
Ω, CL = 150pF to 1000pF, measured
from +3V to -3V or -3V to +3V
RL = 3kΩ, CL = 1000pF, one transmitter
switching
Receiver input to receiver output,
CL = 150pF




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