The ISL315xE family of 5V powered RS-485/RS-422 transceivers features high output drive and high ESD protection. The devices withstand ±16. 5kV IEC61000-4- 2 ESD strikes without latch-up. The large output voltage of 3. 1V typical into a 54Ω load provides high noise immunity, and enables the drive of up to 8000ft long bus segments, or eight 120Ω terminations in a star topology. These devices possess less than 125μA bus input currents, thus constituting a true 1/8 unit load. The high output drive combined with the low bus input currents allows for connecting up to 512 transceivers on the same bus. The receiver inputs feature a full fail-safe design that turns the receiver outputs high when the bus inputs are open or shorted. The ISL315xE family includes half and full-duplex transceivers with active-high driver-enable pins and active-low receiver enable pins. These transceivers support data rates of 115kbps, 1Mbps, and 20Mbps. Their performance is characterized from -40°C to +85°C.


  • High VOD: 3.1V (Typ) into RD = 54Ω
  • Low bus currents: 125μA constitutes a true 1/8 unit load
  • Allows for up to 512 transceivers on the bus
  • ±16.5kV ESD protection on bus I/O pins
  • High transient overvoltage tolerance of ±100V
  • Full fail-safe outputs for open or shorted inputs
  • Hot plug capability - driver and receiver outputs remain high-impedance during power-up and power-down
  • Supported data rates: 115kbps, 1Mbps, 20Mbps
  • Low supply current (driver disabled): 550μA
  • Ultra-low shutdown current: 70nA


  • Utility Meters and Automated Meter Reading Systems
  • High Node Count Systems
  • PROFIBUS® and Field Bus Networks, and Factory Automation
  • Security Camera Networks
  • Building Lighting and Environmental Control Systems
  • Industrial/Process Control Networks


Title language Type Format File Size Date
star ISL3150E, ISL3152E, ISL3153E, ISL3155E, ISL3156E, ISL3158E Datasheet
PDF 1.47 MB
R15AN0002: RS-485 Transient Protection in Industrial DC-Supply Buses Rev.1.00
Application Note
PDF 178 KB
AN1991: Isolating RS-485 Interfaces with High-Speed Digital Optocouplers
Application Note
PDF 513 KB
AN1990: RS-485 Transceivers in J1708 Physical Layer Applications of Heavy Duty Vehicles
Application Note
PDF 826 KB
AN1987: RS-485 External Fail-Safe Biasing for Isolated Long Haul Buses
Application Note
PDF 443 KB
AN1986: External Fail-Safe Biasing of RS-485 Networks
Application Note
PDF 582 KB
AN1985: Transient Protection for the Standard RS-485 Transceiver: ISL3152E
Application Note
PDF 335 KB
AN1989: RS-422 vs RS-485: Similarities and Key Differences
Application Note
PDF 440 KB
AN1976: Important Transient Immunity Tests for RS-485 Networks
Application Note
PDF 338 KB
AN1977: Transient Voltage Suppressors: Operation and Features
Application Note
PDF 365 KB
AN1978: Surge Protection for Intersil's Standard RS-485 Transceivers
Application Note
PDF 369 KB
AN1979: Surge Protection simplified with Intersil's Overvoltage Protected (OVP) Transceivers
Application Note
PDF 500 KB
AN1980: Ground Potential Differences: Origin and Remedies
Application Note
PDF 375 KB
AN1593: Add a Loss of Signal (LOS) Indicator to Your RS-485 or RS-422 Transceiver
Application Note
PDF 559 KB
Motor Solutions Brochure 日本語, 简体中文
PDF 1.82 MB
Analog ICs Brochure 日本語
PDF 2.72 MB
TB506: Functional Principles of RS-485 Drivers and Receivers
PDF 156 KB
TB511: The Unit Load Concept
PDF 253 KB
TB505: Understanding the Difference between HBM and IEC 61000-4-2 ESD Immunity
PDF 254 KB
PIN19028 - Q3 Cy 19 Price Increase Notice
Price Increase Notice
PDF 208 KB
PA21026 - Datasheet specification change for listed Renesas ISL3150E, ISL3152E, ISL3153E, ISL3155E, ISL3156E, ISL3158E* products
Product Advisory
PDF 193 KB
PA16061 - Introduce New T-type End Plug for n-SOIC rail (packing tube)
Product Advisory
PDF 106 KB
PCN20017 - Alternate bond wire material and assembly facility of the listed Renesas nSOIC packaged products
Product Change Notice
PDF 266 KB
PCN14036 - Wafer fabrication Site Change for Listed Intersil Products - Palm Bay, Florida
Product Change Notice
PDF 294 KB
PCN12086 - Alternate Manufacturing Site for Assembly of the Listed Intersil PDIP Packaged Products -Amkor Technology, Philippines (ATP)
Product Change Notice
PCN12026 - Alternate Manufacturing Site for Assembly of the Listed Intersil 8-Lead SOIC Packaged Products
Product Change Notice
PDF 140 KB
PLC18018 - General Q3 Product Life Cycle Notice
Product Life Cycle Notice
PDF 388 KB
TB509: Detecting Bus Signals Correctly with Failsafe Biased RS-485 Receivers
Technical Brief
PDF 300 KB
How to Simplify Industrial PC Interfaces 简体中文
White Paper
PDF 920 KB
RS-485 Transceiver Tutorial 简体中文
White Paper
PDF 246 KB


Title language Type Format File Size Date
Model - Other