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隔离式 RS-485 收发器

ISO1500

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1Mbps、半双工、3kVrms 超小型隔离式 RS-485 和 RS-422 收发器

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ISO1500

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产品详情

Rating Catalog Integrated isolated power No Isolation rating Basic Duplex Half Data rate (max) (Mbps) 1 Working isolation voltage (VIOWM) (Vrms) 400 Surge isolation voltage (VIOSM) (VPK) 4000 Transient isolation voltage (VIOTM) (VPK) 4242 Withstand isolation voltage (VISO) (Vrms) 2500 ESD HBM (kV) 16 VCC1 (min) (V) 1.71 VCC1 (max) (V) 5.5 VCC2 (min) (V) 4.5 VCC2 (max) (V) 5.5 Fail safe Idle, Open, Short CMTI (min) (kV/µs) 85 Operating temperature range (°C) -40 to 125 Creepage (min) (mm) 3.7 Clearance (min) (mm) 3.7
Rating Catalog Integrated isolated power No Isolation rating Basic Duplex Half Data rate (max) (Mbps) 1 Working isolation voltage (VIOWM) (Vrms) 400 Surge isolation voltage (VIOSM) (VPK) 4000 Transient isolation voltage (VIOTM) (VPK) 4242 Withstand isolation voltage (VISO) (Vrms) 2500 ESD HBM (kV) 16 VCC1 (min) (V) 1.71 VCC1 (max) (V) 5.5 VCC2 (min) (V) 4.5 VCC2 (max) (V) 5.5 Fail safe Idle, Open, Short CMTI (min) (kV/µs) 85 Operating temperature range (°C) -40 to 125 Creepage (min) (mm) 3.7 Clearance (min) (mm) 3.7
SSOP (DBQ) 16 29.4 mm² (4.9 mm × 6 mm)
  • Meets or exceeds requirements of TIA/EIA-485-A
  • Half-duplex transceiver
  • Low-EMI 1-Mbps data rate
  • Bus I/O protection
    • ± 16 kV HBM ESD
  • 1.71-V to 5.5-V Logic-side supply (VCC1), 4.5-V to 5.5-V Bus-side supply (VCC2)
  • 1/8 Unit load: up to 256 nodes on bus
  • Failsafe receiver for bus open, short, and idle
  • 100-kV/µs (typical) High common-mode transient immunity
  • Extended temperature range from –40°C to +125°C
  • Glitch-free power-up and power-down for hot plug-in
  • Ultra-small SSOP (DBQ-16) package
  • Safety-related certifications:
    • 4242-VPK VIOTM and 566-VPK VIORM per DIN VDE V 0884-11:2017-01
    • 3000-VRMS Isolation for 1 minute per UL 1577
    • IEC 60950-1, IEC 62368-1 and IEC 61010-1 certifications
    • CQC, TUV, and CSA certifications
  • Meets or exceeds requirements of TIA/EIA-485-A
  • Half-duplex transceiver
  • Low-EMI 1-Mbps data rate
  • Bus I/O protection
    • ± 16 kV HBM ESD
  • 1.71-V to 5.5-V Logic-side supply (VCC1), 4.5-V to 5.5-V Bus-side supply (VCC2)
  • 1/8 Unit load: up to 256 nodes on bus
  • Failsafe receiver for bus open, short, and idle
  • 100-kV/µs (typical) High common-mode transient immunity
  • Extended temperature range from –40°C to +125°C
  • Glitch-free power-up and power-down for hot plug-in
  • Ultra-small SSOP (DBQ-16) package
  • Safety-related certifications:
    • 4242-VPK VIOTM and 566-VPK VIORM per DIN VDE V 0884-11:2017-01
    • 3000-VRMS Isolation for 1 minute per UL 1577
    • IEC 60950-1, IEC 62368-1 and IEC 61010-1 certifications
    • CQC, TUV, and CSA certifications

The ISO1500 device is a galvanically-isolated differential line transceiver for TIA/EIA RS-485 and RS-422 applications. This device has a 3-channel digital isolator and an RS-485 transceiver in an ultra-small 16-pin SSOP package. The bus pins of this transceiver are protected against IEC ESD contact discharge and IEC EFT events. The receiver output has a failsafe for bus open, short, and idle conditions. The small solution size of ISO1500 greatly reduces the board space required compared to other integrated isolated RS-485 solutions or discrete implementation with optocouplers and non-isolated RS-485 transceiver.

The device is used for long distance communications. Isolation breaks the ground loop between the communicating nodes, allowing for a much larger common mode voltage range. The symmetrical isolation barrier of each device is tested to provide 3000 VRMS of isolation for 1 minute per UL 1577 between the bus-line transceiver and the logic-level interface.

The ISO1500 device can operate from 1.71 V to 5.5 V on side 1 which lets the devices interface with low-voltage FPGAs and ASICs. The supply voltage on side 2 is from 4.5 V to 5.5 V. This device supports a wide operating ambient temperature range from –40°C to +125°C.

The ISO1500 device is a galvanically-isolated differential line transceiver for TIA/EIA RS-485 and RS-422 applications. This device has a 3-channel digital isolator and an RS-485 transceiver in an ultra-small 16-pin SSOP package. The bus pins of this transceiver are protected against IEC ESD contact discharge and IEC EFT events. The receiver output has a failsafe for bus open, short, and idle conditions. The small solution size of ISO1500 greatly reduces the board space required compared to other integrated isolated RS-485 solutions or discrete implementation with optocouplers and non-isolated RS-485 transceiver.

The device is used for long distance communications. Isolation breaks the ground loop between the communicating nodes, allowing for a much larger common mode voltage range. The symmetrical isolation barrier of each device is tested to provide 3000 VRMS of isolation for 1 minute per UL 1577 between the bus-line transceiver and the logic-level interface.

The ISO1500 device can operate from 1.71 V to 5.5 V on side 1 which lets the devices interface with low-voltage FPGAs and ASICs. The supply voltage on side 2 is from 4.5 V to 5.5 V. This device supports a wide operating ambient temperature range from –40°C to +125°C.

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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 ISO1500 3-kVRMS Basic Isolated RS-485/RS-422 Transceiver in Ultra-Small Package 数据表 (Rev. D) PDF | HTML 2020-2-13
证书 VDE Certificate for Reinforced Isolation for DIN EN IEC 60747-17 (Rev. AB) 2026-7-15
证书 TUV Certificate for Isolation Devices (Rev. M) 2026-5-7
证书 UL Certificate of Compliance File E181974 Vol 4 Sec 6 (Rev. S) 2026-5-7
应用简报 如何在 RS-485 系统中隔离信号和电源 (Rev. D) PDF | HTML 英语版 (Rev.D) PDF | HTML 2025-11-14
证书 CQC Certificate for ISOxxDBQ (Rev. B) 2025-8-19
证书 CSA Certificate for ISO1500DBQ 2023-3-23
应用手册 隔离式 RS-485 收发器参考设计 (Rev. A) PDF | HTML 英语版 (Rev.A) PDF | HTML 2022-10-14
产品概述 Isolation for RS-485 PDF | HTML 2022-8-21
应用简报 强大的隔离式 RS-485 支持全新工业应用 (Rev. C) PDF | HTML 英语版 (Rev.C) PDF | HTML 2022-8-18
应用简报 如何隔离 RS-485 以实现超小尺寸 和超高可靠性 (Rev. C) PDF | HTML 英语版 (Rev.C) PDF | HTML 2022-8-1
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
白皮书 简化信号链设计，在小型系统中实现高性能 英语版 2020-10-22
技术文章 The hidden cost of optocouplers for isolated RS-485 and CAN designs PDF | HTML 2019-1-28

设计与开发

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评估板

ISO1500DBQEVM — ISO1500DBQ 超小型封装、隔离式 RS-485 评估模块

ISO1500DBQEVM 评估模块 (EVM) 用于评估采用小型 16 引脚封装（封装代码为 DBQ）的高性能、增强型隔离式 RS-485 ISO1500。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。
用户指南: PDF
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仿真模型

ISO1500 IBIS MODEL

SLLM423.ZIP (92 KB) - IBIS 模型
支持的产品和硬件
封装 引脚 CAD 符号、封装和 3D 模型
SSOP (DBQ) 16 Ultra Librarian
适用于评估类项目的 TI 标准条款与条件。

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