T = 25°C, V

= V

= 3.3 V,

A

CC1

CC2

Pattern: PRBS 2 -1

7

T = 25°C, V

1 = V

2 = 3.3 V, Pattern: PRBS 2 -1

A

CC

CC

7

ISO7420E, ISO7420FE, ISO7421E, ISO7421FE

SLLSE45F – DECEMBER 2010 – REVISED JULY 2015

www.ti.com

Typical Application (continued)

9.2.3 Application Curves

Figure 27. ISO7420FE Typical Eye Diagram at 100 MBPS,

Figure 26. ISO7420FE Typical Eye Diagram at 50 MBPS,

3.3 V Operation

3.3 V Operation

10 Power Supply Recommendations

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

input and output supply pins (VCC1 and VCC2). The capacitors should be placed as close to the supply pins as

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).

24

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