ISO7330

1

2

3

4

5

6

7

8

16

15

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11

10

9

INA

INB

OUTC

NC

OUTA

OUTB

INC

NC

GND2

0.1 µF

EN

GND2

NC

GND1

GND1

0.1 µF

ISO7331

1

2

3

4

5

6

7

8

16

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14

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10

9

INA

INB

OUTC

NC

OUTA

OUTB

INC

NC

GND2

0.1 µF

EN2

GND2

EN1

GND1

GND1

0.1 µF

ISO7330C, ISO7330FC, ISO7331C, ISO7331FC

www.ti.com

SLLSEK9B – JANUARY 2015 – REVISED APRIL 2015

Typical Application (continued)

9.2.3 Application Performance Curves

Typical eye diagrams of ISO733x below indicate low jitter and wide open eye at the maximum data rate of 25

Mbps.

Figure 20. Eye Diagram at 25 Mbps, 3.3 V and 25°C

Figure 19. Eye Diagram at 25 Mbps, 5 V and 25°C

9.2.4 Systems Examples

Unlike Optocouplers, which need external components to improve performance, provide bias, or limit current,

ISO733x only needs two external bypass capacitors to operate.

Figure 21. Typical ISO7330 Circuit Hook-up

Figure 22. Typical ISO7331 Circuit Hook-up

10 Power Supply Recommendations

To ensure reliable operation at all data rates and supply voltages, a 0.1 µF bypass capacitor is recommended at

possible. If only a single primary-side power supply is available in an application, isolated power can be

generated for the secondary-side with the help of a transformer driver such as Texas Instruments' SN6501. For

such applications, detailed power supply design and transformer selection recommendations are available in

SN6501 datasheet (SLLSEA0) .

Copyright © 2015, Texas Instruments Incorporated

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Product Folder Links: ISO7330C ISO7330FC ISO7331C ISO7331FC