IT
ISO6521 2-Channel Digital Isolator Carrier, 1/1, Default High, F
These modules are carrier boards or breakout boards for the ISO652x general purpose functional isolators from Texas Instruments; we therefore recommend referring to the ISO652x datasheet for detailed specifications. The ISO652x features two digital channels that enable 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.
table.active_controller_comparison td.spacer {border: none; background: white;} table.active_controller_comparison td.white {background: white;} table.active_controller_comparison tr.tall {height: 24px;}The four 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 | |
|---|---|---|---|---|---|---|---|---|---|
ISO652x carrier |
#5746 | ISO6520 | high | 2 forward, 0 reverse |
50 Mbps | 450 VRMS | 2.8 mm | 0.4″×0.4″ | $1.95 |
| #5747 (coming soon) | ISO6520F | low | |||||||
| #5748 | ISO6521 | high | 1 forward, 1 reverse |
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| #5749 (coming soon) | ISO6521F | 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. | |||||||||
Pinouts of the ISO652x 2-Channel Digital Isolator Carrier series. |
|---|
This version features the ISO6521, which has one forward channel and one reverse channel and defaults to high in the event of input power or signal loss. It can be differentiated from the other versions by the “6521” marking on the IC.
|
| PIN | Type | Description |
|---|---|---|
| VCC1 | Side 1 power supply. Valid ranges: 1.71 V to 1.89 V or 2.25 V to 5.5 V. Note: Side 1 channel output states are undetermined for 1.05 V |