The Renesas ISL317xE are ±15kV IEC61000 ESD protected, 3. 3V powered single transceivers that meet both the RS-485 and RS-422 standards for balanced communication. These devices have very low bus currents (+125µA/-100µA), so they present a true “1/8 unit load” to the RS-485 bus. This allows up to 256 transceivers on the network without violating the RS-485 specification's 32 unit load maximum, and without using repeaters. For example, in a remote utility meter reading system, individual meter readings are routed to a concentrator using an RS-485 network, so the high allowed node count minimizes the number of repeaters required. Receiver (Rx) inputs feature a “Full Fail-Safe” design, which ensures a logic high Rx output if Rx inputs are floating, shorted, or terminated but undriven. Hot Plug circuitry ensures that the Tx and Rx outputs remain in a high impedance state while the power supply stabilizes. The ISL3170E through ISL3175E utilize slew rate limited drivers which reduce EMI, and minimize reflections from improperly terminated transmission lines, or unterminated stubs in multidrop and multipoint applications. Slew rate limited versions also include receiver input filtering to enhance noise immunity in the presence of slow input signals. The ISL3170E, ISL3171E, ISL3173E, ISL3174E, ISL3176E, and ISL3177E are configured for full duplex (separate Rx input and Tx output pins) applications. The half duplex versions multiplex the Rx inputs and Tx outputs to allow transceivers with output disable functions in 8 Ld packages.

特性

  • IEC61000 ESD protection on RS-485 I/O pins ±15kV
    • Class 3 ESD level on all other pins >7kV HBM
  • Full fail-safe (open, short, terminated/floating) receivers
  • Hot plug - Tx and Rx outputs remain three-state during power-up (only versions with output enable pins)
  • True 1/8 unit load allows up to 256 devices on the bus
  • Single 3.3V supply
  • High data rates up to 20Mbps
  • Low quiescent supply current 800µA (Max)
    • Ultra low shutdown supply current 10nA
  • -7V to +12V common-mode input/output voltage range
  • Half and full duplex pinouts
  • Three state Rx and Tx outputs available
  • Current limiting and thermal shutdown for driver overload protection
  • Tiny MSOP packages consume 50% less board space
  • Pb-free (RoHS compliant)

应用

  • Automated utility meter reading systems
  • High node count systems
  • Field bus networks
  • Security camera networks
  • Building environmental control/lighting systems
  • Industrial/process control networks

description文档

文档标题 language 类型 文档格式 文件大小 日期
数据手册与勘误表
star ISL3170E, ISL3171E, ISL3172E, ISL3173E, ISL3174E, ISL3175E, ISL3176E, ISL3177E, ISL3178E 数据手册 PDF 1.25 MB
应用指南 & 白皮书
R15AN0002: RS-485 Transient Protection in Industrial DC-Supply Buses Rev.1.00 应用文档 PDF 178 KB
How to Simplify Industrial PC Interfaces English 白皮书 PDF 1010 KB
RS-485收发器教程 English 白皮书 PDF 474 KB
AN1991: Isolating RS-485 Interfaces with High-Speed Digital Optocouplers 应用文档 PDF 513 KB
AN1990: RS-485 Transceivers in J1708 Physical Layer Applications of Heavy Duty Vehicles 应用文档 PDF 826 KB
AN1987: RS-485 External Fail-Safe Biasing for Isolated Long Haul Buses 应用文档 PDF 443 KB
AN1986: External Fail-Safe Biasing of RS-485 Networks 应用文档 PDF 582 KB
AN1985: Transient Protection for the Standard RS-485 Transceiver: ISL3152E 应用文档 PDF 335 KB
AN1989: RS-422 vs RS-485: Similarities and Key Differences 应用文档 PDF 440 KB
AN1976: Important Transient Immunity Tests for RS-485 Networks 应用文档 PDF 338 KB
AN1977: Transient Voltage Suppressors: Operation and Features 应用文档 PDF 365 KB
AN1978: Surge Protection for Intersil's Standard RS-485 Transceivers 应用文档 PDF 369 KB
AN1979: Surge Protection simplified with Intersil's Overvoltage Protected (OVP) Transceivers 应用文档 PDF 500 KB
AN1980: Ground Potential Differences: Origin and Remedies 应用文档 PDF 375 KB
AN1593: Add a Loss of Signal (LOS) Indicator to Your RS-485 or RS-422 Transceiver 应用文档 PDF 559 KB
PCN / PDN
PCN20017 - Alternate bond wire material and assembly facility of the listed Renesas nSOIC packaged products 产品变更通告 PDF 266 KB
PA16061 - Introduce New T-type End Plug for n-SOIC rail (packing tube) Product Advisory PDF 106 KB
PCN15046 - Wafer Fabrication Site Change for Listed Intersil Products - Global Foundry P6 Process transfer to Palm Bay - Phase II 产品变更通告 PDF 398 KB
PCN13013 - Test Site Change for the Listed Intersil Products - Carsem (CAS) Ipoh Malaysia 产品变更通告 PDF 207 KB
PCN12068 - SOIC w/ Copper Bond Wire @ ASECL as Alternate Assembly Site 产品变更通告 PDF 108 KB
其他
Analog ICs Brochure 日本語 手册 PDF 4.20 MB
TB506: Functional Principles of RS-485 Drivers and Receivers 其他 PDF 156 KB
TB509: Detecting Bus Signals Correctly with Failsafe Biased RS-485 Receivers 技术摘要 PDF 300 KB
TB511: The Unit Load Concept 其他 PDF 253 KB
TB505: Understanding the Difference between HBM and IEC 61000-4-2 ESD Immunity 其他 PDF 254 KB

file_download下载

文档标题 language 类型 文档格式 文件大小 日期
模型
isl3175e Model - Other IBS 43 KB