Interface

Overview

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.

ISL3260xE Functional Diagram
ISL3260xE Functional Diagram
  • 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
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Applications

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

Documentation

Title Type Date
ISL32600E, ISL32601E, ISL32602E, ISL32603E Datasheet
PDF1.66 MB
Datasheet
AN1978: Surge Protection for Renesas' Standard RS-485 Transceivers
PDF1023 KB
Application Note
AN1985: Transient Protection for the Standard RS-485 Transceiver: ISL3152E
PDF207 KB
Application Note
AN1979: Surge Protection simplified with Renesas' Overvoltage Protected (OVP) Transceivers
PDF474 KB
Application Note
R15AN0011: FAQs: RS-485 Transceivers
PDF366 KB
Application Note
R15AN0002: RS-485 Transient Protection in Industrial DC-Supply Buses
PDF178 KB
Application Note
AN1991: Isolating RS-485 Interfaces with High-Speed Digital Optocouplers
PDF513 KB
Application Note
AN1990: RS-485 Transceivers in J1708 Physical Layer Applications of Heavy Duty Vehicles
PDF826 KB
Application Note
AN1987: RS-485 External Fail-Safe Biasing for Isolated Long Haul Buses
PDF443 KB
Application Note
AN1986: External Fail-Safe Biasing of RS-485 Networks
PDF582 KB
Application Note
AN1989: RS-422 vs RS-485: Similarities and Key Differences
PDF440 KB
Application Note
AN1976: Important Transient Immunity Tests for RS-485 Networks
PDF338 KB
Application Note
AN1977: Transient Voltage Suppressors: Operation and Features
PDF365 KB
Application Note
AN1980: Ground Potential Differences: Origin and Remedies
PDF375 KB
Application Note
Analog ICs Brochure
PDF4.91 MB日本語
Brochure
Transceivers Brochure
PDF2.95 MB
Brochure
TB506: Functional Principles of RS-485 Drivers and Receivers
PDF156 KB
Other
TB511: The Unit Load Concept
PDF253 KB
Other
TB505: Understanding the Difference between HBM and IEC 61000-4-2 ESD Immunity
PDF254 KB
Other
PIN19028 - Q3 Cy 19 Price Increase Notice
PDF208 KB
Price Increase Notice
PCN22018 - MSL Re-Classification for listed Renesas MSOP and nSOIC products
PDF178 KB
Product Change Notice
PCN20017 - Alternate bond wire material and assembly facility of the listed Renesas nSOIC packaged products
PDF266 KB
Product Change Notice
PCN15046 - Wafer Fabrication Site Change for Listed Intersil Products - Global Foundry P6 Process transfer to Palm Bay - Phase II
PDF398 KB
Product Change Notice
RS-485: Transmitting Full-Duplex Data over Single Twisted-Pair Cable
PDF438 KB
Report
R70TB0002: Understanding the Differences in ESD Device-Level Testing
PDF188 KB
Technical Brief
TB509: Detecting Bus Signals Correctly with Failsafe Biased RS-485 Receivers
PDF300 KB
Technical Brief
How to Simplify Industrial PC Interfaces
PDF920 KB 简体中文
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Design & Development

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Models

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isl32601e
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Model - IBIS

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