Texas Instruments ISO774x/ISO774x-Q1 Quad-Channel Digital Isolators are high-performance, quad-channel digital isolators with 5000VRMS (DW package) and 2500VRMS (DBQ package) isolation ratings per UL 1577. The ISO774x/ISO774x-Q1 quad-channel isolators have reinforced insulation ratings according to VDE, CSA, TUV, and CQC standards. These 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 a silicon dioxide (SiO2) insulation barrier. These enable pins that can put the respective outputs in high impedance for multi-master driving applications and reduce power consumption. The ISO7740/ISO7740-Q1 devices have all four channels in the same direction. These ISO7741/ISO7741-Q1 devices have three forward, and one reverse-direction channel and the ISO7742/ISO7742-Q1 devices have two forward and two reverse-direction channels. The Texas Instruments ISO774x-Q1 devices are AEC-Q100 qualified for automotive applications.
Features
Signaling rate of up to 100Mbps
Robust isolation barrier
>100-year projected lifetime at 1500VRMS working voltage
Up to 5000VRMS isolation rating
Up to 12.8kV surge capability
±100kV/µs typical CMTI
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 at typical 1.5mA per channel @ 1Mbps
The low propagation delay of 10.7ns (typ.) (5V supplies)
High CMTI (±75kv/µs typ.)
Robust Electromagnetic Compatibility (EMC)
System-level ESD, EFT, and surge immunity
±8 kV IEC 61000-4-2 contact discharge protection across the isolation barrier
Low emissions
Isolation barrier life: >40 years
Wide-SOIC (DW-16) and QSOP (DBQ-16) package options
