Adafruit ISO1540 Bidirectional I2C Isolator - Qwiic
The Adafruit ISO1540 Bidirectional I2C Isolator is used to add full electrical isolation between two sides of an I2C bus. The chip Adafruit use, the TI ISO1540 is fully bi-directional, supports up to 1 MHz clock rates, supports clock-stretching, works with 3 to 5V DC power or logic (separate on either side of course), with 2500 V-RMS isolation.
Usage is easy - you get power/ground/clock/data breakout pads for each side as well as a matching STEMMA QT connector. Unlike other isolators, the two sides are obviously electrically isolated, which means each half must be powered! Check that the green LED is lit on both sides. Now send data over I2C and you're good to go. There are 10K pullups on each side, from the I2C pins to the matching VCC for that side.
Quick Spec
- Isolated bidirectional, I2C compatible, communication
- Supports up to 1-MHz operation
- 3-V to 5.5-V supply range
- Open-drain outputs With 3.5-mA Side 1 and 35-mA Side 2 sink current capability
- -40°C to +125°C operating temperature
- ±50-kV/μs transient immunity (Typical)
- HBM ESD protection of 4 kV on all pins; 8 kV on bus pins
- Safety-related certifications
- 4242-VPK isolation per DIN VDE V 0884-11:2017-01
- 2500-VRMS isolation for 1 minute per UL 1577
- CSA approval per IEC 60950-1 and IEC 62368-1 end equipment standards
- CQC basic insulation per GB4943.1-2011
- Dimensions: 25.5 x 18mm
- Net Weight: 4g
Resources
Shipping List
- 1 x Adafruit ISO1540 Bidirectional I2C Isolator - Qwiic
Adafruit ISO1540 Bidirectional I2C Isolator - Qwiic
- Brand: Adafruit
- Product Code: AF4903
- Weight: 0.004kg
- Product Status : Active
Stock
| Warehouse | Stock Status | Location |
|---|---|---|
| Centurion | In Stock | FF395 |
| Stellenbosch | No Stock |
We ship free of charge between branches to complete your order.
-
R178.00 (Inc Tax: R204.70)
Related Products
4N25 Optoisolator - SMD (4 Pack)
4N25 Optoisolator - SMD (4 Pack) An optoisolator or optocoupler is a cool little device that allows you to completely separate sections of an electrical circuit. The 4N25 family is an industry standa..
R18.00 (Inc Tax: R20.70)
PC817 Opto Isolator - DIP (4 Pack)
PC817 Opto Isolator - DIP (4 Pack) The PC817 is an optocoupler or opto-isolator, which is an electronic component that uses light to isolate two circuits electrically while allowing data or signals..
R8.00 (Inc Tax: R9.20)
Opto Isolator 24-5V Module
Opto Isolator 24-5V Module This is a uni-directional 24VDC to 5VDC level-shifter with complete isolation. A practical use of such a device is to use an output signal from a 24VDC system such as from ..
R85.00 (Inc Tax: R97.75)
Isolation Board 4 Channel
Isolation Board 4 Channel This is a PC817 4 Channel Optocoupler Isolation Board. The onboard 4-Channel 817 are independent, so they can achieve different voltage control at the same time. Using 4-w..
R32.00 (Inc Tax: R36.80)
Tags: adafruit, iso1540, bi, bidirectional, i2c, iso, isolator, qwiic, opto, isolate, isolator