The ISO7231C-Q1 are triple-channel digital isolators with multiple channel configurations and output enable functions. These devices have logic input and output buffers separated by TI’s silicon dioxide (SiO2) isolation barrier. Used in conjunction with isolated power supplies, these devices block high voltage, isolate grounds, and prevent noise currents on a data bus or other circuits from entering the local ground and interfering with or damaging sensitive circuitry.
The ISO7231C-Q1 has two channels in one direction and one channel in opposition. These devices have an active-high output enable that when driven to a low level, places the output in a high-impedance state.
The ISO7231C-Q1 have TTL input thresholds and a noise-filter at the input that prevents transient pulses of up to 2ns in duration from being passed to the output of the device.
In each device, a periodic update pulse is sent across the isolation barrier to provide the proper dc level of the output. If this dc-refresh pulse is not received, the input is assumed to be unpowered or not being actively driven, and the failsafe circuit drives the output to a logic high state. (Contact TI for a logic low failsafe option).
These devices require two supply voltages of 3.3V, 5V, or any combination. All inputs are 5V tolerant when supplied from a 3.3V supply and all outputs are 4mA CMOS. These devices are characterized for operation over the ambient temperature range of –40°C to 125°C.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | ISO7231C-Q1 High Speed, Triple Digital Isolators datasheet (Rev. C) | PDF | HTML | 17 Oct 2025 |
| Certificate | VDE Certificate for Basic Isolation for DIN EN IEC 60747-17 (Rev. AA) | 11 Jun 2026 | ||
| White paper | Improve Your System Performance by Replacing Optocouplers with Digital Isolators (Rev. D) | PDF | HTML | 07 Nov 2025 | |
| Certificate | CSA Certificate for ISO72xxDW (Rev. A) | 20 Aug 2025 | ||
| Certificate | UL Certificate of Compliance File E181974 Vol 4 Sec 1 (Rev. A) | 05 Aug 2022 | ||
| White paper | Why are Digital Isolators Certified to Meet Electrical Equipment Standards? | 16 Nov 2021 | ||
| White paper | Distance Through Insulation: How Digital Isolators Meet Certification Requiremen | PDF | HTML | 11 Jun 2021 | |
| Application brief | How to Replace Optocouplers with Digital Isolators in Standard Interface Circuit (Rev. A) | PDF | HTML | 19 May 2021 | |
| Application brief | Considerations for Selecting Digital Isolators | 24 Jul 2018 |
For additional terms or required resources, click any title below to view the detail page where available.
DIGI-ISO-EVM is an evaluation module (EVM) used to evaluate any of the TI single-channel, dual-channel, triple-channel, quad-channel or six-channel digital isolator devices in five different packages - 8-pin narrow-body SOIC (D), 8-pin wide-body SOIC (DWV), 16-pin wide-body SOIC (DW), 16-pin ultra- (...)
The ISO723X724X evaluation module (EVM) supports the rapid, parametric evaluation of the Triple and Quad Digital Isolators. The EVM will be delivered with an ISO7241C soldered on the board. If another device is desired, please order samples from www.ti.com. If you do not have the capability to (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| SOIC (DW) | 16 | Ultra Librarian |
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