TYPICAL PERFORMANCE CHARACTERISTICS
Unless otherwise noted, the following performance characteristics apply for VCC = +3.3V, 250kbps data rates, all drivers
loaded with 3kΩ, 0.1µF charge pump capacitors, and TAMB = +25°C.
6
4
30
25
20
15
10
5
- Slew
+ Slew
TxOUT +
2
T1 at 250Kbps
0
T2 at 15.6Kbps
All TX loaded 3K // CLoad
-2
-4
-6
T1 at 250Kbps
T2 at 15.6Kbps
TxOUT -
All TX loaded 3K // CLoad
0
0
1000
2000
3000
4000
5000
0
500 1000
2000 3000 4000 5000
Load Capacitance (pF)
Load Capacitance (pF)
Figure 1. Transmitter Output Voltage vs Load
Capacitance.
Figure 2. Slew Rate vs Load Capacitance.
35
16
14
12
10
8
T1 at Full Data Rate
30
25
20
15
10
5
250Kbps
T2 at 1/16 Data Rate
All TX loaded 3K // CLoad
125Kbps
20Kbps
6
1 Transmitter at 250Kbps
1 Transmitter at 15.6Kbps
4
All transmitters loaded with 3K // 1000pf
2
0
0
0
1000
2000
3000
4000
5000
2.7
3
3.5
4
4.5
5
Load Capacitance (pF)
Supply Voltage (V)
Figure 4. Supply Current vs Supply Voltage.
Figure 3. Supply Current vs Load Capacitance when
Transmitting Data.
6
TxOUT +
4
2
T1 at 250Kbps
T2 at 15.6Kbps
0
All TX loaded 3K // 1000 pF
-2
-4
TxOUT -
-6
2.7
3
3.5
4
4.5
5
Supply Voltage (V)
Figure 5. Transmitter Output Voltage vs Supply
Voltage.
Rev. A Date:12/11/03
SP3222EB/3232EB True +3.0 to +5.5V RS-232 Transceivers
© Copyright 2003 Sipex Corporation
4
SIPEX [ SIPEX CORPORATION ]
