SP3243EUEA-L-TR Datasheet, PDF (4/25 Pages) Exar Corporation – 3 Driver/5 Receiver Intelligent +3.0V to +5.5V RS-232 Transceivers

TYPICAL PERFORMANCE CHARACTERISTICS
Unless otherwise noted, the following performance characteristics apply for V_CC = +3.3V, 1000kbps data rate, all
drivers loaded with 3kΩ, 0.1µF charge pump capacitors, and T_AMB = +25°C.
200
150
100
50
0
0
T1 at 500Kbps
T2 at 31.2Kbps
All TX loaded 3K // CLoad
250 500 1000 1500
Load Capacitance (pF)
2000
Figure 1. Transmitter Skew VS. Load Capacitance
6
4
2
0
-2
-4
-6
2.7
1Driver at 1Mbps
Other Drivers at 62.5Kbps
All Drive rs Loaded with 3K // 250pF
3
3.5
4
4.5
5
Supply V oltage (V)
Figure 2. Transmitter Output Voltage VS. Supply
Voltage for the SP3243EU
6
4 ^2Mbps
1.5Mbps
1Mbps
2
0
1 TX at full data rate
2 TX’s at1/16 data rate
-2
-4 _2Mbps
1.5Mbps
1Mbps
-6
0
250
500 1000 1500
Load Capacitance (pF)
2000
Figure 3. Transmitter Output Voltage VS. Load
Capacitance for the SP3243EU
40
35
30
250Kbps
120Kbps
25
20Kbps
20
15
10
5
0
0
1 Transmi tter at full Data Rate
2 Transmi tters at 1 5.5 Kbps
All Transmi tters loa des 3K + Load Cap
1000 2000 3000
4000
Load Capacitance (pF)
5000
Figure 4. Supply Current VS. Load Capacitance for
the SP3243EU
25
20
15
10
1 Transmitter at 250Kbps
2 Transmitters at 15.6Kbps
5
All drivers loaded with 3K // 1000pF
0
2.7
3
3.5
4
4.5
5
Supply V oltage (V _DC)
Figure 5. Supply Current VS. Supply Voltage for the
SP3243EU
6
4
TxOUT +
2
0
-2
TxOUT -
-4
-6
0
1000 2000 3000 4000 5000
Load Capacitance (pF)
Figure 6. Transmitter Output Voltage VS. Load
Capacitance for the SP3243EB
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com

SP3243E_102_060611