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ISO654x 4-Channel Digital Isolator Carriers
These breakout boards for the 4-channel ISO654x functional isolators from Texas Instruments enable digital communication between two galvanically (electrically) isolated devices at up to 50 Mbps per channel. This isolation means that current cannot flow from one side to the other, and incorrect connections or bad voltages on one side cannot propagate through to damage the device on the other side. It also means the logic voltage can be at different levels on the two sides, allowing these carrier boards to function as level shifters.
The six IC versions feature different combinations of channel directions and default output behavior as shown in the table below:
| Pololu Item # |
IC part number |
Default output |
Channels | Max data rate |
Working voltage 1 |
Min PCB Creepage 2 |
Size | Price | |
|---|---|---|---|---|---|---|---|---|---|
 ISO654x carrier |
#5740 | ISO6540 | high | 4 forward, 0 reverse |
50 Mbps | 400 VRMS | 5.3 mm | 0.6″×0.7″ | $2.75 |
| #5741 | ISO6540F | low | |||||||
| #5742 | ISO6541 | high | 3 forward, 1 reverse |
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| #5743 | ISO6541F | low | |||||||
| #5744 | ISO6542 | high | 2 forward, 2 reverse |
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| #5745 | ISO6542F | low | |||||||
| Note 1: IC component functional isolation rating per manufacturer datasheet. | |||||||||
| Note 2: Minimum creepage along PCB surface based on layout design only. Other creepage distances, e.g. along the body of the component, may be lower. | |||||||||
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Pinouts of the ISO654x 4-Channel Digital Isolator Carrier series. |
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Products in category “ISO654x 4-Channel Digital Isolator Carriers”
| Pololu item #: 5740 | |
| Brand: Pololu | supply outlook |
| Status: Active and Preferred | |
|
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This module is a carrier board for TI’s ISO6540 general purpose functional isolator, which enables four channels of galvanically isolated digital communication between two devices at up to 50 Mbps per channel. All four channels are in the forward direction, and they default to high in the event of input power or signal loss.
| Pololu item #: 5741 | |
| Brand: Pololu | supply outlook |
| Status: Active and Preferred | |
|
|
|
This module is a carrier board for TI’s ISO6540F general purpose functional isolator, which enables four channels of galvanically isolated digital communication between two devices at up to 50 Mbps per channel. All four channels are in the forward direction, and they default to low in the event of input power or signal loss.
| Pololu item #: 5742 | |
| Brand: Pololu | supply outlook |
| Status: Active and Preferred | |
|
|
|
This module is a carrier board for TI’s ISO6541 general purpose functional isolator, which enables four channels of galvanically isolated digital communication between two devices at up to 50 Mbps per channel. It provides three forward channels and one reverse channel, and they default to high in the event of input power or signal loss.
| Pololu item #: 5743 | |
| Brand: Pololu | supply outlook |
| Status: Active and Preferred | |
|
|
|
This module is a carrier board for TI’s ISO6541F general purpose functional isolator, which enables four channels of galvanically isolated digital communication between two devices at up to 50 Mbps per channel. It provides three forward channels and one reverse channel, and they default to low in the event of input power or signal loss.
| Pololu item #: 5744 | |
| Brand: Pololu | supply outlook |
| Status: Active and Preferred | |
|
|
|
This module is a carrier board for TI’s ISO6542 general purpose functional isolator, which enables four channels of galvanically isolated digital communication between two devices at up to 50 Mbps per channel. It provides two forward channels and two reverse channels, and they default to high in the event of input power or signal loss.
| Pololu item #: 5745 | |
| Brand: Pololu | supply outlook |
| Status: Active and Preferred | |
|
|
|
This module is a carrier board for TI’s ISO6542F general purpose functional isolator, which enables four channels of galvanically isolated digital communication between two devices at up to 50 Mbps per channel. It provides two forward channels and two reverse channels, and they default to low in the event of input power or signal loss.
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ISO654XINTRO: Get one or more items from category ISO654x 4-Channel Digital Isolator Carriers at $2.22. This offer is valid through 31 May 2026.
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