Texas Instruments ISO672x/ISO672x-Q1 Digital Isolators
Texas Instruments ISO672x/ISO672x-Q1 Dual-Channel Digital Isolators are ideal for cost-sensitive applications requiring up to 3000VRMS (D package) isolation ratings per UL 1577. These devices are also certified by VDE, TUV, CSA, and CQC. The ISO672x/ISO672x-Q1 devices provide high electromagnetic immunity and low emissions at low power consumption while isolating CMOS or LVCMOS digital I/Os. Each isolation channel has a logic input and output buffer separated by TI’s double capacitive silicon dioxide (SiO2) insulation barrier. The ISO672xB/ISO672xB-Q1 device has 2 isolation channels with 1 channel in each direction. In the event of input power or signal loss, the default output is high for devices without suffix F and low for devices with suffix F.
Used in conjunction with isolated power supplies, these devices help prevent noise currents on data buses, such as UART, SPI, RS-485, RS-232, and CAN, from damaging sensitive circuitry. Through innovative chip design and layout techniques, the electromagnetic compatibility of the ISO672x/ISO672x-Q1 has been significantly enhanced to ease system-level ESD, EFT, surge, and emissions compliance. The Texas Instruments ISO672x/ISO672x-Q1 family of devices is available in an 8-pin SOIC narrow-body (D) package and is a pin-to-pin upgrade to the older generations. The ISO672x-Q1 devices are AEC-Q100 qualified for automotive applications.
Features
- 50Mbps data rate
- Robust isolation barrier
- High lifetime at 450VRMS working voltage
- Up to 3000VRMS isolation rating
- ±75kV/µs typical CMTI
- 1.71V to 1.89V and 2.25V to 5.5V wide supply range
- 1.71V to 5.5V level translation
- Default output High (ISO672xB) and Low (ISO672xFB) options
- –40°C to +125°C wide temperature range
- 1.8mA per channel typical at 1Mbps
- Robust electromagnetic compatibility (EMC)
- System-Level ESD, EFT, and surge immunity
- ±8kV IEC 61000-4-2 contact discharge protection across the isolation barrier
- Low emissions
- 11ns typical low propagation delay
- Narrow-SOIC (D-8) package
- Safety-related certifications (pending)
- DIN V VDE 0884-11:2017-01
- UL 1577 component recognition program
- IEC 60950-1, IEC 62368-1, IEC 61010-1, IEC 60601-1 and GB 4943.1-2011 certifications
Applications
- Power supplies
- Grid, electricity meter
- Motor drives
- Factory automation
- Building automation
- Lighting
- Appliances
Datasheets
Functional Block Diagram
Related Development Tools
Texas Instruments DIGI-ISO-EVM Digital Isolator Evaluation Module
For TI single-channel, dual-channel, triple-channel, quad-channel, or six-channel digital isolators.
Texas Instruments ISO6721DEVM Digital Isolator Evaluation Module
Evaluates the ISO6721, a general-purpose, robust EMC dual-channel digital isolator in the SOIC-8.