SP3220B Datasheet, PDF (4/18 Pages) Sipex Corporation – High Speed +3.0V to +5.5V RS-232 Driver/Receiver Pair

TYPICAL PERFORMANCE CHARACTERISTICS
Unless otherwise noted, the following performance characteristics apply for V_CC = +3.3V, 250kbps data rates, all drivers
loaded with 3kΩ, 0.1µF charge pump capacitors, and T_AMB = +25°C.
30
25
20
T1 at Full Data Rate
T2 at 1/16 Full Data Rate
T1+T2 Loaded with 3k/CLoad
15
10
125Kbps
60Kbps
20Kbps
5
0
0
1000 2000 3000 4000 5000
Load Capacitance (pF)
Figure 1. I_CC vs Load Capacitance for the SP3220B.
6
4
2
T1 at 250Kbps
0
TxOUT +
-2
-4
TxOUT -
-6
0
1000 2000 3000 4000
Load Capacitance (pF)
5000
Figure 2. Transmiter Output Voltage vs Load Capacitance
for the SP3220B..
6
TxOUT +
4
2
0
-2
-4
TxOUT -
-6
2.7
3
3.5
4
4.5
5
Supply Voltage (V)
Figure 3. Transmitter Output Voltage vs Supply Voltage
for the SP3220B.
12
10
8
6
4
2
T1 Loaded with 3K // 1000pf @ 250Kbps
0
2.7
3
3.5
4
4.5
5
Supply Voltage (V)
Figure 4. Supply Current vs Supply Voltage for the
SP3220B.
25
20
15
10
5
00
- Slew
+ Slew
500 1000 2000 3000 4000 5000
Load Capacitance (pF)
Figure 5. Slew Rate vs Load Capacitance for the
SP3220B.
40
30
2Mbps
20
1Mbps
500Kbps
10
0
0 250 500 1000 2000 3000 4000
Load Capacitance (pF)
Figure 4. Supply Current vs Supply Voltage for the
SP3220U.
Rev. 7/8/03
SP3220B/U +3.0 to +5.0V RS-232 Transceivers
4
© Copyright 2003 Sipex Corporation