1

ISO1640

SDA2

SCL2

SCL1

GND2

GND1

VCC2

VCC1

SDA1

4

Side 1

Side 2

2 mm

maximum

2 mm

maximum

8

7

6

5

2

3

1

1 k

10 …F

10 …F

1 k

1 k

1 k

Figure 9-5. Typical ISO1640 Circuit Hookup

Power Supply Recommendations

To help ensure reliable operation at data rates and supply voltages, TI recommends connecting a 0.1-µF bypass

capacitor at the 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 TI's SN6501 device. For

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

SN6501 Transformer Driver for Isolated Power Supplies. (SLLSEA0).

ISO1640

SLLSFC2 – OCTOBER 2020

www.ti.com

20

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