4

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com

SP3222EB/SP3232EB_103_081414

Unless otherwise noted, the following performance characteristics apply for V

drivers loaded with 3kΩ, 0.1µF charge pump capacitors, and T

Figure 2. Slew Rate vs Load Capacitance

Figure 1. Transmitter Output Voltage vs Load

Capacitance

6

4

2

0

-2

-4

-6

0

1000

2000

3000

4000

5000

TxOUT+

TxOUT-

Load Capacitance (pF)

T1 at 250Kbps

T2 at 15.6Kbps

All TX loaded 3K // CLoad

Figure 3. Supply Current VS. Load Capacitance

when Transmitting Data

Figure 5. Transmitter Output Voltage vs Supply

Voltage

Figure 4. Supply Current VS. Supply Voltage

TYPICAL PERFORMANCE CHARACTERISTICS

30

25

20

15

10

5

0

0

500

1000

2000

3000

4000

5000

Load Capacitance (pF)

- Slew

+ Slew

T1 at 250Kbps

T2 at 15.6Kbps

All TX loaded 3K // CLoad

6

4

2

0

-2

-4

-6

2.7

3

3.5

4

4.5

5

Supply Voltage (V)

TxOUT -

TxOUT+

T1 at 250Kbps

T2 at 15.6Kbps

All TX loaded 3K // 1000 pF

35

30

25

20

15

10

5

0

Load Capacitance (pF)

0

1000

2000

3000

4000

5000

250Kbps

125Kbps

20Kbps

T1 at Full Data Rate

T2 at 1/16 Data Rate

All TX loaded 3K // CLoad

16

14

12

10

8

6

4

2

0

2.7

3

3.5

4

4.5

5

Supply Voltage (V)

1 Transmitter at 250Kbps

1 Transmitter at 15.6Kbps

All transmitters loaded with 3K // 1000pf