The ISL32600E, ISL32601E, ISL32602E, and ISL32603E are ±15kV IEC61000 ESD protected, micro-power, wide supply range transceivers for differential communication. The ISL32600E and ISL32601E operate with VCC ≥ 2. 7V and have maximum supply currents as low as 100µA with both the transmitter (Tx) and receiver (Rx) enabled. The ISL32602E and ISL32603E operate with supply voltages as low as 1. 8V. These transceivers have very low bus currents, so they present less than a 1/8 unit load to the bus. This allows more than 256 transmitters on the network without violating the RS-485 specification's 32 unit load maximum. The Rx inputs feature symmetrical switching thresholds and up to 65mV of hysteresis to improve noise immunity and to reduce duty cycle distortion in the presence of slow moving input signals. The Rx input common-mode range is the full -7V to +12V RS-485 range for supply voltages ≥ 3V. Hot plug circuitry ensures that the Tx and Rx outputs remain in a high impedance state while the power supply stabilizes. This transceiver family uses slew rate limited drivers, which reduce EMI, and minimize reflections from improperly terminated transmission lines or from unterminated stubs in multidrop and multipoint applications. The ISL32600E and ISL32602E are configured for full duplex (separate Rx input and Tx output pins) applications. The ISL32601E and ISL32603E are half duplex versions that multiplex the Rx inputs and Tx outputs to allow transceivers with output disable functions in 8 Ld packages.


  • Single 1.8V, 3V, or 3.3V supply
  • Low supply currents
    • ISL32601E: 100µA (maximum) at 3V
    • ISL32603E: 150µA (maximum) at 1.8V
  • Ultra low shutdown supply current: 10nA
  • IEC61000 ESD protection on RS-485 I/O pins: ±15kV
    • Class 3 ESD levels on all other pins: >8kV HBM
  • Symmetrical switching thresholds for less duty cycle distortion
  • Up to 65mV hysteresis for improved noise immunity
  • Data rates from 128kbps to 460kbps
  • Specified for +125°C operation
  • 1/8 unit load allows up to 256 devices on the bus
  • -7V to +12V common-mode input/output voltage range (VCC ≥ 3V)
  • Half and full duplex pinouts; three state Rx and Tx outputs
  • 5V tolerant logic inputs
  • Tiny MSOP packages consume 50% less board space


  • Differential Sensor Interfaces
  • Process Control Networks
  • Security Camera Networks
  • Building Environmental Control/Lighting Systems


Title language Type Format File Size Date
Datasheets & Errata
star ISL32600E, ISL32601E, ISL32602E, ISL32603E Datasheet Datasheet PDF 1.66 MB
Application Notes & White Papers
R15AN0002: RS-485 Transient Protection in Industrial DC-Supply Buses Rev.1.00 Application Note PDF 178 KB
How to Simplify Industrial PC Interfaces 简体中文 White Paper PDF 920 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
PCN20017 - Alternate bond wire material and assembly facility of the listed Renesas nSOIC packaged products Product Change Notice PDF 266 KB
PCN15046 - Wafer Fabrication Site Change for Listed Intersil Products - Global Foundry P6 Process transfer to Palm Bay - Phase II Product Change Notice PDF 398 KB
Analog ICs Brochure 日本語 Brochure PDF 4.20 MB
PIN19028 - Q3 Cy 19 Price Increase Notice Price Increase Notice PDF 208 KB
TB506: Functional Principles of RS-485 Drivers and Receivers Other PDF 156 KB
TB509: Detecting Bus Signals Correctly with Failsafe Biased RS-485 Receivers Technical Brief PDF 300 KB
TB511: The Unit Load Concept Other PDF 253 KB
TB505: Understanding the Difference between HBM and IEC 61000-4-2 ESD Immunity Other PDF 254 KB


Title language Type Format File Size Date
isl32601e Model - Other IBS 34 KB