SP3243E EXAR [Exar Corporation], SP3243E Datasheet - Page 4

• Manufacturer Part Number: SP3243E
• Description: 3 Driver/5 Receiver Intelligent +3.0V to +5.5V RS-232 Transceivers
• Manufacturer: EXAR [Exar Corporation]

Unless otherwise noted, the following performance characteristics apply for V
drivers loaded with 3kΩ, 0.1µF charge pump capacitors, and T
Figure 1. Transmitter Skew VS. Load Capacitance
Figure 3. Transmitter Output Voltage VS. Load
Capacitance for the SP3243EU
Figure 5. Supply Current VS. Supply Voltage for the
SP3243EU
200
150
100
50
-2
-4
-6
25
20
15
10
6
4
2
0
0
5
0
0
0
2.7
2Mbps
2Mbps
1 TX at full data rate
2 TX’s at1/16 data rate
250
1 Transmitter at 250Kbps
2 Transmitters at 15.6Kbps
All drivers loaded with 3K // 1000pF
250
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
3
Load Capacitance (pF)
Supply V oltage (V
Load Capacitance (pF)
1.5Mbps
1.5Mbps
T1 at 500Kbps
T2 at 31.2Kbps
All TX loaded 3K // CLoad
500
3.5
500
1000
4
1000
1Mbps
1Mbps
DC
)
1500
4.5
1500
2000
5
2000
TYPICAL PERFORMANCE CHARACTERISTICS
4
Figure 4. Supply Current VS. Load Capacitance for
the SP3243EU
Figure 2. Transmitter Output Voltage VS. Supply
Voltage for the SP3243EU
Figure 6. Transmitter Output Voltage VS. Load
Capacitance for the SP3243EB
AMB
= +25°C.
40
35
30
25
20
15
10
-2
-4
-6
-2
-4
-6
5
0
6
4
2
0
6
4
2
0
0
2.7
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
1000
3
CC
TxOUT +
TxOUT -
Load Capacitance (pF)
Load Capacitance (pF)
Supply V oltage (V)
= +3.3V, 1000kbps data rate, all
250Kbps
2000
3.5
2000
1Driver at 1Mbps
Other Drivers at 62.5Kbps
All Drive rs Loaded with 3K // 250pF
3000
3000
4
120Kbps
SP3243E_100_072309
4000
20Kbps
4.5
4000
5000
5
5000