ADUM7643

PRODUCTION

1 kV RMS Six-Channel Digital Isolators (3/3 Channel Directionality)

Analog Devices ADUM7643 Product Info

10 February 2026 3

Features

Small 20-lead QSOP
1000 V rms isolation rating
Safety and regulatory approvals:

UL 1577

V_ISO = 1000 V rms for 1 minute

Low power operation

3.3 V operation

1.6 mA per channel maximum at 0 Mbps to 1 Mbps
7.8 mA per channel maximum at 25 Mbps

5 V operation

2.2 mA per channel maximum at 0 Mbps to 1 Mbps
11.2 mA per channel maximum at 25 Mbps

Bidirectional communication
Up to 25 Mbps data rate (NRZ)
3 V/5 V level translation
High temperature operation: 105°C
High common-mode transient immunity: >15 kV/μs

Part details & applications

The ADuM7640 / ADuM7641 / ADuM7642 / ADuM7643 are 6-channel digital isolators based on the Analog Devices, Inc., iCoupler^® technology. These 1 kV digital isolation devices are packaged in a small 20-lead QSOP. They offer space savings and a lower price than 2.5 kV or 5 kV isolation solutions when only functional isolation is needed.

This family, like many Analog Devices isolators, offers very low power consumption, using one-tenth to one-sixth the power of other digital isolators, with the supply voltage on either side ranging from 3.0 V to 5.5 V. Despite their low power consumption, the ADuM7640 / ADuM7641 / ADuM7642 / ADuM7643 provide low pulse width distortion (< 6 ns for C grade) and a channel- by-channel glitch filter to protect the device against extraneous noise disturbances. Four channel direction combinations are available with a maximum data rate of 1 Mbps or 25 Mbps. All products have a default output high logic state in the absence of input power.

Applications

General-purpose, multichannel isolation
SPI interface/data converter isolation
RS-232/RS-422/RS-485 transceivers
Industrial field bus isolation

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