TYPICAL PERFORMANCE CHARACTERISTICS
Unless otherwise noted, the following performance characteristics apply for VCC = +3.3V, 250kbps data rate, all drivers
loaded with 3KΩ, 0.1µF charge pump capacitors, and TAMB = +25°C.
40
35
30
25
20
15
10
5
25
20
15
10
5
- Slew
+ Slew
120Kbps
250Kbps
20Kbps
1 Transmitter at 250Kbps
1 Transmitter at full Data Rate
2 Transmitters at 15.5 Kbps
2 Transmitter at 15.6Kbps
All drivers loaded 3K + Load Cap
All Transmitters loades 3K + Load Cap
0
0
0
500 1000
2000 3000 4000 5000
0
1000
2000
3000
4000
5000
Load Capacitance (pF)
Load Capacitance (pF)
Figure 7. Slew Rate VS. Load Capacitance for the
SP3243EB
Figure 8. Supply Current VS. Load Capacitance when
Transmitting Data for the SP3243EB
25
20
15
6
TxOUT +
4
2
0
10
1 Transmitter at 250Kbps
-2
2 Transmitters at 15.6Kbps
5
All drivers loaded with 3K // 1000pF
-4
-6
TxOUT -
0
2.7
3
3.5
4
4.5
5
2.7
3
3.5
4
4.5
5
Supply Voltage (V
)
DC
Supply Voltage (V
)
DC
Figure 9. Supply Current VS. Supply Voltage for the
SP3243EB
Figure 10. Transmitter Output Voltage VS. Supply
Voltage for the SP3243EB
Date: 6/2/04
SP3223EB/3243EB +3.0V to +5.5V RS-232 Transceivers
© Copyright 2004 Sipex Corporation
5
SIPEX [ SIPEX CORPORATION ]
