lines (SDA1 and SCL1) to VCC1 and on output lines (SDA1 and SCL1) to VCC2, depends on the load and rise

time requirements on the respective lines.

1

ISO154 0-Q1

SDA2

SCL2

SCL1

GND2

GND1

VCC2

VCC1

SDA1

4

Side 1

Side 2

2mm

maximu m

2 mm

maximu m

8

7

6

5

2

3

1

1 k

0.1 F

0.1 F

1 k

1 k

1 k

Figure 8-5. Typical ISO1540-Q1 Circuit Hookup

1

ISO154 1-Q1

SDA2

SCL2

SCL1

GND2

GND1

VCC2

VCC1

SDA1

4

Side 1

Side 2

2mm

maximu m

2 mm

maximu m

8

7

6

5

2

3

1

1 k

0.1 F

0.1 F

1 k

1 k

1 k

Figure 8-6. Typical ISO1541-Q1 Circuit Hookup

8.2.3 Application Curve

T

= 25 C

VCC1 = 3.6 V

A

o

Time - 50 ns/div

900 mV

VOL1

GND1

Figure 8-7. Side 1: Low-to-High Transition

ISO1540-Q1, ISO1541-Q1

SLLSEX0D – NOVEMBER 2016 – REVISED DECEMBER 2022

www.ti.com

24

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