Texas Instruments ISO771x/ISO771x-Q1 Digital Isolators

Texas Instruments ISO771x/ISO771x-Q1 Digital Isolators are a high-performance, single-channel digital isolator with 5000V_RMS (DW package) and 3000V_RMS (D package) isolation ratings per UL 1577. This device is also certified by VDE, TUV, CSA, and CQC. The ISO771x/ISO771x-Q1 provides high electromagnetic immunity and low emissions at low power consumption while isolating CMOS or LVCMOS digital I/Os. The isolation channel has a logic input and output buffer separated by a silicon dioxide (SiO₂) insulation barrier. In the event of input power or signal loss, the default output is high for a device without suffix F and low for a device with suffix F. When used in conjunction with isolated power supplies, the device helps prevent noise currents on a data bus or other circuits from entering the local ground and interfering with or damaging sensitive circuitry. Through innovative chip design and layout techniques, the electromagnetic compatibility of the ISO771x/ISO771x-Q1 device has been significantly enhanced to ease system-level ESD, EFT, surge, and emissions compliance. The Texas Instruments ISO771x-Q1 devices are AEC-Q100 qualified for automotive applications.

Features

Signaling rate up to 100Mbps
2.25V to 5.5V wide supply range
2.25V to 5.5V level translation
Default output high and low options
–55°C to 125°C wide temperature range
Low power consumption, typical 1.7mA at 1Mbps
Low propagation delay, 11ns typical (5V supplies)
High CMTI, ±100kV/µs typical
Robust Electromagnetic Compatibility (EMC):
- System-level ESD, EFT, and surge immunity
- Low emissions
> 40 years isolation barrier life
Wide-SOIC (DW-16) and narrow-SOIC (D-8) package options

Safety and regulatory approvals
- VDE reinforced insulation per DIN V VDE V 0884-10 (VDE V 0884-10):2006-12
- UL 1577 component recognition program
- CSA component acceptance notice 5A, IEC 60950-1, and IEC 60601-1 end equipment standards
- CQC certification per GB4943.1-2011
- TUV certification according to EN 60950-1 and EN 61010-1
- VDE, UL, CSA, and TUV certifications for DW-16 package complete; all other certifications planned