ISO1540QDRQ1 Part Information
The ISO1540-Q1 and ISO1541-Q1 devices are lowpower, 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-Q1 and ISO1541-Q1 devices enable a complete isolated I2C interface to be implemented within a small form factor. The ISO1540-Q1 has two isolated bidirectional channels for clock and data lines while the ISO1541Q1 has a bidirectional data and a unidirectional clock channel. The ISO1541-Q1 is useful in applications that have a single master while the ISO1540-Q1 is suitable for multi-master applications. For applications where clock stretching by the slave is possible, the ISO1540-Q1 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 highlevel input voltage on side 1, thus preventing an internal logic latch that otherwise would occur with standard digital isolators.
- 3-V to 5.5-V Supply Range
- AEC-Q100 Qualified With the Following Results: u2013 Device Temperature Grade 1: u201340u00b0C to +125u00b0C Ambient Operating Temperature u2013 Device HBM ESD Classification Level 3A u2013 Device CDM ESD Classification Level C6
- Isolated Bidirectional, I2 C Compatible, Communication
- Open-Drain Outputs With 3.5-mA Side 1 and 35- mA Side 2 Sink Current Capability
- Qualified for Automotive Applications
- Safety-Related Certifications:
- Supports up to 1-MHz Operation
- u00b150-kV/u00b5s Transient Immunity (Typical)
|No. of Channels||2 Channel|
|Supply Voltage Min||3V|
|Supply Voltage Max||5.5V|
|Interface Case Style||SOIC|
|No. of Pins||8Pins|
|Operating Temperature Min||-40°C|
|Operating Temperature Max||125°C|
|Automotive Qualification Standard||AEC-Q100|
|RoHS Phthalates Compliant||Yes|
|MSL||MSL 2 - 1 year|
|SVHC||No SVHC (27-Jun-2018)|
Alternative Part Descriptions
- DIGITAL ISOLATOR, 2-CH, WSOIC-8; No. of Channels:2 Channel; Propagation Delay:33ns; Supply Voltage Min:3V; Supply Voltage Max:5.5V; Interface Case Style:SOIC; No. of Pins:8Pins; Operating Temperature Min:-40°C; Operating Temperature RoHS Compliant: Yes | Newark Electronics
- Automotive, 2.5-kVrms, isolated bidirectional clock, bidirectional I2C isolator | Texas Instruments
Frequently Asked Questions
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What category does ISO1540QDRQ1 fall under?
The ISO1540QDRQ1 is listed under Electronic & Electrical Components > Semiconductors - ICs > Driver & Interface ICs.
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Is the ISO1540QDRQ1 RoHS compliant?
Yes. This part has been flagged as RoHS Compliant by Farnell.
Which authorised distributors for ISO1540QDRQ1 have stock available?
Authorised distributors including Newark Electronics and Texas Instruments have stock available or on a lead time for ISO1540QDRQ1.
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