ISL81387 datasheet(23/27 Pages) INTERSIL

23 / 27 page

ISL81387, ISL41387

FN6201.4

June 9, 2014

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FIGURE 39. RS-232, TRANSMITTER MAXIMUM DATA RATE vs LOAD

CAPACITANCE

FIGURE 40. RS-232, TRANSMITTER OUTPUT VOLTAGE vs DATA RATE

FIGURE 41. RS-232, TRANSMITTER SKEW vs DATA RATE

FIGURE 42. RS-485, TRANSMITTER JITTER vs DATA RATE WITH 2000’

CAT-5 CABLE

FIGURE 43. RS-485, TRANSMITTER JITTER vs DATA RATE WITH 1000’

CAT-5 CABLE

FIGURE 44. RS-485, TRANSMITTER JITTER vs DATA RATE WITH 350’

CAT-5 CABLE

Typical Performance Curves V

CC = VL = 5V, TA = +25°C; Unless Otherwise Specified. (Continued)

100

1000

2000

3000

4000

5000

100

200

300

400

500

600

700

800

900

1000

1100

LOAD CAPACITANCE (pF)

2 TRANSMITTERS AT +25°C

2 TRANSMITTERS AT +85°C

1 TRANSMITTER AT +25°C

VOUT 4V

ALL TOUTS LOADED WITH 5k TO GND

1 TRANSMITTER AT +85°C

100

200

300

400

500

600

700

800

-7.5

-5.0

5.0

7.5

2.5

-2.5

DATA RATE (kbps)

+25°C

+85°C

+25°C

+85°C

VOUT+

VOUT -

2 TRANSMITTERS SWITCHING

ALL TOUTS LOADED WITH 5k TO GND, CL = 1000pF

150

250

350

450

550

650

750

150

200

250

300

350

400

450

DATA RATE (kbps)

+25°C

+85°C

ALL TOUTS LOADED WITH 3k TO GND, CL = 1000pF

2 TRANSMITTERS SWITCHING

DATA RATE (kbps)

32 100

200

300

400

500

600

700

800

900

1000

0.1

100

DOUBLE TERM’ED WITH 121



SLOW

MED

FAST

DATA RATE (kbps)

32 100

200

300

400

500

600

700

800

900

1000

0.1

100

DOUBLE TERM’ED WITH 121



SLOW

MED

FAST

DATA RATE (kbps)

32 100

200

300

400

500

600

700

800

900

1000

0.1

100

DOUBLE TERM’ED WITH 121



SLOW

MED

FAST

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