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ISO7742

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增强型 4 通道、2/2、数字隔离器

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新 ISO6442 正在供货 具有 250kV/us CMTI、150Mbps 且 EMC 性能优异的增强型/基础型 4 通道、2/2 数字隔离器 Pin-to-pin cost-effective solution; 250kV/us CMTI and 150 Mbps that supports most digital isolation applications

ISO7742

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Rating Catalog Integrated isolated power No Number of channels 4 Forward/reverse channels 2 forward / 2 reverse Data rate (max) (Mbps) 100 Protocols GPIO, PWM, SPI, UART Propagation delay time (typ) (ns) 10.7 Propagation delay time (max) (ns) 17 Part-to-part output skew (max) (ns) 4.4 Channel-to-channel output skew (max) (ns) 4 Certifications CQC, CSA, DIN, TUV Isolation rating Basic, Reinforced Withstand isolation voltage (VISO) (Vrms) 3000, 5000 Surge isolation voltage (VIOSM) (kVPK) 10, 12.8 CMTI (min) (kV/µs) 85 Default output High, Low Creepage (min) (mm) 3.7, 8 Current consumption per channel (DC) (typ) (mA) 0.85 Current consumption per channel (1 Mbps) (typ) (mA) 1.5 Operating temperature range (°C) -55 to 125 Transient isolation voltage (VIOTM) (VPK) 4242, 8000 Clearance (min) (mm) 3.7, 8
Rating Catalog Integrated isolated power No Number of channels 4 Forward/reverse channels 2 forward / 2 reverse Data rate (max) (Mbps) 100 Protocols GPIO, PWM, SPI, UART Propagation delay time (typ) (ns) 10.7 Propagation delay time (max) (ns) 17 Part-to-part output skew (max) (ns) 4.4 Channel-to-channel output skew (max) (ns) 4 Certifications CQC, CSA, DIN, TUV Isolation rating Basic, Reinforced Withstand isolation voltage (VISO) (Vrms) 3000, 5000 Surge isolation voltage (VIOSM) (kVPK) 10, 12.8 CMTI (min) (kV/µs) 85 Default output High, Low Creepage (min) (mm) 3.7, 8 Current consumption per channel (DC) (typ) (mA) 0.85 Current consumption per channel (1 Mbps) (typ) (mA) 1.5 Operating temperature range (°C) -55 to 125 Transient isolation voltage (VIOTM) (VPK) 4242, 8000 Clearance (min) (mm) 3.7, 8
SSOP (DBQ) 16 29.4 mm² (4.9 mm × 6 mm) SOIC (DW) 16 106.09 mm² (10.3 mm × 10.3 mm)
  • 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
    • For Ultra-wide package options, supporting >21.2mm Creepage, refer to ISO7741U and ISO7742U
    • For smaller, cost-optimized packages (up to 50% smaller for reinforced isolation), further improved noise immunity (up to 250kV/us CMTI) and higher data rate support (up to 150Mbps), refer to ISO644x
  • 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
  • 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
    • For Ultra-wide package options, supporting >21.2mm Creepage, refer to ISO7741U and ISO7742U
    • For smaller, cost-optimized packages (up to 50% smaller for reinforced isolation), further improved noise immunity (up to 250kV/us CMTI) and higher data rate support (up to 150Mbps), refer to ISO644x
  • 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

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.

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.

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技术文档

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顶层文档 类型 标题 格式选项 下载最新的英语版本 日期
* 数据表 ISO774x High-Speed, Robust-EMC Reinforced and Basic Quad-Channel Digital Isolators 数据表 (Rev. K) PDF | HTML 2026-8-11
证书 VDE Certificate for Reinforced Isolation for DIN EN IEC 60747-17 (Rev. AB) 2026-7-15
应用手册 了解高压应用的安全要求和隔离需求 第 I 部分：区分不同的安全标准并了解安全要求的基本原理 PDF | HTML PDF | HTML 2026-7-7
应用手册 用于控制和保护的 HVDC 架构和设计方案简介 PDF | HTML PDF | HTML 2026-5-26
证书 CSA Certificate for ISO77xxDW (Rev. C) 2026-5-7
证书 TUV Certificate for Isolation Devices (Rev. M) 2026-5-7
证书 CSA Certificate for ISO77xxDBQ (Rev. B) 2026-5-7
证书 UL Certificate of Compliance File E181974 Vol 4 Sec 6 (Rev. S) 2026-5-7
白皮书 通过使用数字隔离器替代光耦合器改善系统性能 (Rev. D) PDF | HTML 英语版 (Rev.D) PDF | HTML 2025-11-13
证书 CQC Certificate for ISOxxDBQ (Rev. B) 2025-8-19
证书 CQC Certificate for ISOxxDWx (Rev. K) 2025-8-18
应用手册 数字隔离器设计指南 (Rev. G) PDF | HTML 英语版 (Rev.G) PDF | HTML 2023-9-20
应用手册 具有 16kV 接触放电 ESD 保护功能且符合 IEC60601-1-2 标准的数字隔离设计 PDF | HTML 英语版 PDF | HTML 2023-2-17
白皮书 Why are Digital Isolators Certified to Meet Electrical Equipment Standards? 2021-11-16
白皮书 绝缘穿透距离：数字隔离器如何满足认证要求 英语版 PDF | HTML 2021-9-27
应用简报 如何在 I2C 系统中隔离信号和电源 (Rev. B) PDF | HTML 英语版 (Rev.B) PDF | HTML 2021-8-9
功能安全信息 ISO7742-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML 2020-6-18
模拟设计期刊 SPI 总线远距离通信扩展 (Rev. A) 2018-10-2
模拟设计期刊 使用数字隔离器设计隔离式 I2C 总线接口 (Rev. A) 2018-10-2
应用简报 Considerations for Selecting Digital Isolators 2018-7-24
模拟设计期刊 How to reduce radiated emissions of digital isolators for systems with RF module 2018-3-26
模拟设计期刊 Designing an Isolated I2C Bus interface by using digital isolators (Rev. A) 2018-3-13
应用手册 Isolation Glossary (Rev. A) 2017-9-19

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评估板

DIGI-ISO-EVM — 通用数字隔离器评估模块

DIGI-ISO-EVM 是一个评估模块 (EVM)，用于评估 TI 采用以下五种不同封装的任何单通道、双通道、三通道、四通道或六通道数字隔离器器件：8 引脚窄体 SOIC (D)、8 引脚宽体 SOIC (DWV)、16 引脚宽体 SOIC (DW)、16 引脚超宽体 SOIC (DWW) 和 16 引脚 QSOP (DBQ) 封装。此 EVM 具有足够的 Berg 引脚选项，支持使用超少的外部元件来评估相应器件。

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评估板

ISO7741DBQEVM — ISO7741 评估模块（DBQ 封装）

ISO7741DBQEVM 是一款用于评估采用 16 引脚 SSOP 封装（封装代码 DBQ）的高性能增强型四通道数字隔离器 ISO7741 的评估模块。此 EVM 具有足够的测试点和跳线选项，支持使用超少的外部元件来评估相应器件。
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ISO7741EVM — ISO7741 高速、强大的 EMC 四通道数字隔离器评估模块

ISO7741EVM 是一款用于评估 ISO7741 器件的评估模块 (EVM)。ISO7741 是一款高性能增强型四通道数字隔离器，采用宽体 SOIC 封装（封装代码 DW）。此 EVM 具有足够的测试点和跳线选项，支持使用超少的外部元件来评估相应器件。
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仿真模型

ISO7742 IBIS Model (Rev. A)

SLLM312A.ZIP (62 KB) - IBIS 模型
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仿真模型

ISO7742 PSpice Transient Model

SLLM472.ZIP (243 KB) - PSpice 模型
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参考设计

TIDA-010062 — 1kW、80+ titanium、GaN CCM 图腾柱无桥 PFC 和半桥 LLC（具有 LFU）参考设计

此参考设计是一种数字控制的紧凑型 1kW 交流/直流电源设计，适用于服务器电源单元 (PSU) 和电信整流器应用。该高效设计支持两个主要功率级，包括一个前端连续导通模式 (CCM) 图腾柱无桥功率因数校正 (PFC) 功率级。PFC 级采用带有集成驱动器的 LMG341x GaN FET，可在宽负载范围内实现高效率，并且符合 80 Plus Titanium 要求。该参考设计还支持 LMG3422 GaN FET 半桥电感器-电感器-电容器 (LLC) 隔离式直流/直流级，以便在 1kW 功率下实现 +12V 直流输出。两个控制卡使用 C2000™ Piccolo™ 微控制器来控制两个功率级。
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TIDA-010271 — 面向储能系统的可堆叠电池管理单元参考设计

该参考设计是一种全面的电芯温度检测和高电芯电压精度锂离子 (Li-ion)、磷酸铁锂 (LiFePO4) 电池包（32 芯）。该设计可监控每个电芯的电压和电芯温度，并保护电池包以确保安全使用。该设计使用板载和非板载菊花链通信接口，以实现具有成本效益的堆叠式总线连接。得益于这些特性，该参考设计适用于高容量电池包应用。
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TIDA-060020 — 支持 HART 的 PLC 模拟输入模块参考设计

此参考设计是一个单通道 4mA 至 20mA 模拟输入模块，支持高速可寻址远程传感器 (HART) 通信协议，可在场发射器和可编程逻辑控制器 (PLC) 之间进行双向数字通信。代表主要变量的回路电流流经电流检测电阻器，产生与之成正比的电压，该电压由精密 Δ-Σ 模数转换器 (ADC) (ADS1260) 进行数字化。该设计中使用了 DAC8740H 调制解调器，以在整个电流环路中实现 HART 通信。ADS1260 和 DAC8740H 与外部微控制器相连接，该微控制器控制着 ADS1260 采样，并包含支持 HART 协议的 HART 软件栈。该设计还具有数字隔离、宽电源电压范围以及用于 (...)
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封装 引脚 CAD 符号、封装和 3D 模型
SSOP (DBQ) 16 Ultra Librarian
SOIC (DW) 16 Ultra Librarian
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