| Customization: | Available |
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| Conductive Type: | Bipolar Integrated Circuit |
| Integration: | GSI |
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ISO1540DR : Digital Isolators Low-Power,Bidirec I2C Iso
Mfr. Part#: ISO1540DR
Datasheet: 
(e-mail or chat us for PDF file)
ROHS Status:
Quality: 100% Original
Warranty: ONE YEAR
| Series: | ISO1540 |
| Mounting Style: | SMD/SMT |
| Package / Case: | SOIC-8 |
| Number of Channels: | 2 Channel |
| Polarity: | Bidirectional |
| Data Rate: | 1 Mb/s |
| Isolation Voltage: | 2500 Vrms |
| Isolation Type: | Capacitive Coupling |
| Supply Voltage - Max: | 5.5 V |
| Supply Voltage - Min: | 3 V |
| Operating Supply Current: | 2.5 mA, 3.1 mA |
| Propagation Delay Time: | 70 ns |
| Minimum Operating Temperature: | - 40 C |
| Maximum Operating Temperature: | + 125 C |
| Packaging: | Reel |
| Packaging: | Cut Tape |
| Development Kit: | ISO154XEVM |
| Moisture Sensitive: | Yes |
| Operating Supply Voltage: | 3 V to 5.5 V |
| Product Type: | Digital Isolators |
| Protocol Supported: | I2C |
| Factory Pack Quantity: | 100 |
| Subcategory: | Interface ICs |
| Type: | I2C Isolator |
| Part # Aliases: | HPA02222DR |
| Unit Weight: | 0.019048 oz |
The ISO1540 and ISO1541 devices are low-power, bidirectional isolators that are compatible with I2C interfaces. These devices have logic input and output buffers that are separated by Texas Instruments Capacitive Isolation technology using a silicon dioxide (SiO2) barrier. When used with isolated power supplies, these devices block high voltages, isolate grounds, and prevent noise currents from entering the local ground and interfering with or damaging sensitive circuitry. This isolation technology provides for function, performance, size, and power consumption advantages when compared to optocouplers. The ISO1540 and ISO1541 devices enable a complete isolated I2C interface to be implemented within a small form factor. The ISO1540 has two isolated bidirectional channels for clock and data lines while the ISO1541 has a bidirectional data and a unidirectional clock channel. The ISO1541 is useful in applications that have a single controller while the ISO1540 is suitable for multi-controller applications. For applications where clock stretching by the target is possible, the ISO1540 device should be used. Isolated bidirectional communication is accomplished within these devices by offsetting the low-level output voltage on side 1 to a value greater than the high level input voltage on side 1, thus preventing an internal logic latch that otherwise would occur with standard digital isolators.
APPLICATION
• Isolated I2C buses
• SMBus and PMBus interfaces
• Open-drain networks
• Motor control systems
• Battery management
• I2C level shifting
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