ADuM1253

Ultra-Low-Power, I2C Isolator with

Unidirectional SCL, Extended VDD,

Idle-Bus Hot-Swap, and Low VOL

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Analog Devices | 18

tF2 MEASURED FROM: 0.7VDD2 TO 0.3VDD2

Pin Configuration

TOP VIEW

1

2

3

4

VDD1

GND1

SDA1

ADuM1253

SCL1

5

6

7

8

VDD2

GND2

SDA2

SCL2

+

Pin Description

PIN

NAME

FUNCTION

1

VDD1

Supply Voltage Side 1. Bypass VDD1 ith a 1n an a 0.1μ ceramic capacit r as cl se as p ssible t

the pin.

2

SDA1

Serial Data Input/Output on Side 1. SDA1 is translated to/from SDA2 and is an open-drain output.

3

SCL1

Serial Clock Input on Side 1. SCL1 is translated to SCL2 and is an input.

4

GND1

Ground Reference for Side 1

5

GND2

Ground Reference for Side 2

6

SCL2

Serial Clock Output on Side 2. SCL2 is translated from SCL1 and is an open-drain output.

7

SDA2

Serial Data Input/Output on Side 2. SDA2 is translated to/from SDA1 and is an open-drain output.

8

VDD2

Supply Voltage Side 2. Bypass VDD2 ith a 1n an a 0.1μ ceramic capacitor as close as possible to

the pin.