Packaging information
| Package | Pins SOIC (DW) | 16 |
| Operating temperature range (°C) -55 to 125 |
| Package qty | Carrier 2,000 | LARGE T&R |
Features for the ISO7740
- 100Mbps data rate
- Robust isolation barrier:
- >30-year projected lifetime at 1500VRMS working voltage
- Up to 5000VRMS isolation rating
- Up to 12.8kV surge capability
- ±100kV/µs typical CMTI
- Wide supply range: 2.25V to 5.5V
- 2.25V to 5.5V level translation
- Default output high (ISO774x) and low (ISO774xF) options
- Wide temperature range: –55°C to 125°C
- Low power consumption, typical 1.5mA per channel at 1Mbps
- Low propagation delay: 10.7ns typical (5V Supplies)
- Robust electromagnetic compatibility (EMC)
- System-level ESD, EFT, and surge immunity
- ±8kV IEC 61000-4-2 contact discharge protection across isolation barrier
- Low emissions
- Wide-SOIC (DW-16) and QSOP (DBQ-16) package options
- Automotive version available: ISO774x-Q1
- Safety-related certifications:
- DIN EN IEC 60747-17 (VDE 0884-17)
- UL 1577 component recognition program
- IEC 61010-1, IEC 62368-1, IEC 60601-1, and GB 4943.1 certifications
Description for the ISO7740
The ISO774x devices are high-performance, quad-channel digital isolators with 5000VRMS (DW package) and 3000VRMS (DBQ package) isolation ratings per UL 1577. This family includes devices with reinforced insulation ratings according to VDE, CSA, TUV and CQC. The ISO7741B device is designed for applications that require basic insulation ratings only.
The ISO774x 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 double capacitive silicon dioxide (SiO2) insulation barrier. These devices come with enable pins which can be used to put the respective outputs in high impedance for multi-controller driving applications and to reduce power consumption. The ISO7740 device has all four channels in the same direction, the ISO7741 device has three forward and one reverse-direction channels, and theISO7742device has two forward and two reverse-direction channels. If the input power or signal is lost, default output is high for devices without suffix F and low for devices with suffix F. See the Device Functional Modes section for further details.
Used in conjunction with isolated power supplies, these devices help prevent noise currents on data buses, such as RS-485, RS-232, and CAN, or other circuits from entering the local ground and interfering with or damaging sensitive circuitry. Through remarkable chip design and layout techniques, electromagnetic compatibility of the ISO774x devices significantly enhanced to ease system-level ESD, EFT, surge, and emissions compliance. The ISO774x devices are available in 16-pin SOIC and QSOP packages.