Texas Instruments ISO7810FDWW

Overview

ISO7810FDWW from Texas Instruments is a reinforced single-channel digital isolator with 8000 V_PK isolation voltage, 100 Mbps signaling rate, ±100 kV/μs CMTI, and SOIC-16 extra-wide body (DWW) package featuring an enable pin (EN2) for high-impedance output control-used in motor control gate drivers to isolate PWM signals between MCU and IGBT/SiC half-bridge stages.

For engineers reviewing the ISO7810FDWW datasheet, ISO7810FDWW pinout, ISO7810FDWW application, or ISO7810FDWW equivalent, key selection criteria include reinforced isolation certification (VDE 0884-17, UL 1577), DWW-package EN2-driven tri-state capability, 2.25–5.5 V dual-supply level translation, and guaranteed 10.7 ns propagation delay at 5 V-critical for timing-critical industrial inverters and medical power supplies.

Technical Context

The ISO7810FDWW implements capacitive silicon-dioxide (SiO₂) isolation with differential CMOS input and push-pull output buffers separated across the barrier. Its F-suffix denotes low-default output behavior (OUT = low when IN power fails), enabling fail-safe shutdown in safety-critical systems.

Unlike standard isolators, the DWW package integrates EN2 on Pin 13 to force side-2 output into high-impedance state-supporting multi-controller bus arbitration and reducing dynamic power by up to 85% during idle cycles in solar inverter communication interfaces.

Key Specifications

Pinout & Package

ISO7810FDWW uses a 16-pin SOIC extra-wide body (DWW) package measuring 10.30 mm × 17.25 mm (nominal), optimized for ≥14.5 mm creepage/clearance in 600 V_RMS systems. The DWW variant includes EN2 functionality absent in DW-packaged variants.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar digital isolator applications.

Compared with ADUM120N0BRZ-RL7 and SI8610ED-B-IS, the ISO7810FDWW uniquely delivers 8000 V_PK reinforced isolation in a DWW package with EN2-enabling fail-safe motor control, medical-grade power supplies, and multi-controller bus architectures that neither alternative supports.

Availability

ISO7810FDWW is available at Aetrix Electronics and suitable for motor control gate drivers, solar inverter communication interfaces, and medical power supply feedback loops requiring stable component supply across extended product lifecycles.

Supply support for ISO7810FDWW includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and high-reliability isolation technologies since 1930.

The ISO7810x family targets high-performance industrial and medical isolation needs-designed specifically for timing-critical, safety-certified applications demanding >100 kV/μs CMTI and 8000 V_PK reinforced barriers.

FAQ

What is the default output state of the ISO7810FDWW during power loss?

The ISO7810FDWW features an F-suffix designation indicating a low-default output state: when VCC1 drops below 1.7 V, the OUT pin transitions to low within 9 μs. This fail-safe behavior ensures gate drivers disable IGBTs or MOSFETs during primary-side power failure-critical for compliance with IEC 61800-5-2 functional safety standards. The ISO7810FDWW maintains this behavior across its full –55°C to 125°C operating range.

How does the EN2 pin on the ISO7810FDWW improve system-level design?

The EN2 pin (Pin 13) on the ISO7810FDWW enables active control of the side-2 output buffer, placing it in high-impedance state when pulled low. This allows multiple ISO7810FDWW devices to share a common bus without contention-reducing component count in modular PLC backplanes and solar optimizer arrays. Unlike passive pull-up/down solutions, EN2 provides deterministic, low-latency bus arbitration with tPHZ/tPLZ < 32 ns at 3.3 V, directly supported in the ISO7810FDWW's DWW package.

Which safety certifications apply specifically to the ISO7810FDWW DWW package?

The ISO7810FDWW DWW package holds DIN EN IEC 60747-17 (VDE 0884-17) reinforced certification with VIOWM = 2000 V_RMS, UL 1577 recognition (5700 V_RMS withstand), IEC 61010-1, IEC 62368-1, IEC 60601-1, and GB 4943.1. Its 14.5 mm creepage/clearance meets IEC 62368-1 Annex G requirements for Pollution Degree 2 environments at 600 V_RMS mains voltage-verified per qualification test reports referenced in TI's SLLSEP1C datasheet.

Can the ISO7810FDWW operate with mismatched supply voltages on VCC1 and VCC2?

Yes-the ISO7810FDWW supports independent 2.25–5.5 V operation on VCC1 and VCC2, enabling true level translation. For example, it can accept 3.3 V logic from an MCU on side-1 while driving a 5 V gate driver on side-2. Electrical characteristics-including VOH/VOL, propagation delay, and CMTI-are fully specified across all combinations (e.g., 2.5 V/5 V, 3.3 V/2.5 V) in Sections 5.9–5.14 of the datasheet, with no derating required.

What is the minimum recommended creepage distance for PCB layout with the ISO7810FDWW?

The ISO7810FDWW DWW package requires ≥14.5 mm creepage distance between side-1 and side-2 pins per IEC 62368-1 and VDE 0884-17. This is achieved by maintaining 14.5 mm clearance across the isolation barrier on the PCB-measured along the shortest surface path between any GND1/VCC1/IN pad and any GND2/VCC2/OUT/EN2 pad. Grooves or slots may be added to increase effective creepage if board real estate is constrained, but the ISO7810FDWW's DWW body itself provides the baseline 14.5 mm specification.