Features
- 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
ISL3260xE Functional Diagram
Description
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.
Parameters
| Attributes | Value |
|---|---|
| Temp. Range (°C) | -40 to +125°C |
| Devices Allowed on Bus | 256 |
Package Options
| Pkg. Type | Pkg. Dimensions (mm) | Lead Count (#) | Pitch (mm) |
|---|---|---|---|
| MSOP | 3.0 x 3.0 x 0.00 | 8 | 0.7 |
Applications
- Differential Sensor Interfaces
- Process Control Networks
- Security Camera Networks
- Building Environmental Control/Lighting Systems
| Part Number | Status | Samples | Stock | RoHS | Package | Budgetary Price (USD) | Lead Count (#) | Carrier Type | Moisture Sensitivity Level (MSL) | Pitch (mm) | Pkg. Dimensions (mm) | Pb (Lead) Free | Pb Free Category | Temp. Range (°C) | Country of Assembly | Country of Wafer Fabrication |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ISL32603EFUZ | Active | Available | In Stock | RoHS:EN | MSOP | 1ku | $1.58 | 8# | Tube | 1 | 0.7mm | 3.0 x 3.0 x 0.00 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C | MALAYSIA, THAILAND | USA |
| ISL32603EFUZ-T | Active | N/A | In Stock | RoHS:EN | MSOP | 1ku | $1.58 | 8# | Reel | 1 | 0.7mm | 3.0 x 3.0 x 0.00 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C | MALAYSIA, THAILAND | USA |
| ISL32603EFUZ-T7A | Active | N/A | In Stock | RoHS:EN | MSOP | 1ku | $2.25 | 8# | Reel | 1 | 0.7mm | 3.0 x 3.0 x 0.00 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C | MALAYSIA, THAILAND | USA |
| ISL32603EFBZ | Obsolete | N/A | In Stock | RoHS:EN | SOIC | 8# | Tube | 3 | 1.3mm | 4.9 x 3.9 x 0.00 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C | |||
| ISL32603EFBZ-T | Obsolete | N/A | In Stock | RoHS:EN | SOIC | 8# | Reel | 3 | 1.3mm | 4.9 x 3.9 x 0.00 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C | |||
| ISL32603EFBZ-T7A | Obsolete | N/A | In Stock | RoHS:EN | SOIC | 8# | Reel | 3 | 1.3mm | 4.9 x 3.9 x 0.00 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C |
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- TrainingPDF 719 KB R15TB0008EU0100 Rev.1.00 Dec 18, 2023
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- Application NotePDF 365 KB AN1978 Apr 12, 2023AI-generated Summary: The document details surge protection circuits for RS-485 transceivers, focusing on Level 4 (4kV) protection using gas discharge tubes (GDTs) for higher overvoltage and overcurrent tolerance. It compares protection schemes by component count, board area, and cost, highlighting that higher-level protection increases complexity and expense. The BOMs for Level 3 and Level 4 circuits list components such as transceivers, bidirectional TVS diodes, transient blocking units, thyristors or GDTs, and resistors. The GDT switching characteristic explains how it diverts transient currents to ground by transitioning from high impedance to a crowbar current path. Simpler protection can be achieved with overvoltage protected transceivers.
- Application NotePDF 207 KB an1985 Aug 19, 2022AI-generated Summary: Transient protection for RS-485 transceivers involves careful TVS diode design to prevent damage from high surge currents. Internal ESD structures in the ISL3152E share transient current with external TVS diodes, risking damage without current-limiting resistors. Using thick-film resistors under 200 ohms between TVS and transceiver limits surge current while minimizing bus voltage attenuation. Recommended PCB layout includes low-inductance ground and Vcc planes, 0603 resistors for wave or reflow soldering, and proper component placement to reduce inductance and enhance protection.
- Application NotePDF 474 KB AN1979 Aug 16, 2022AI-generated Summary: The document explains surge protection using Renesas’ Overvoltage Protected (OVP) transceivers with various protection schemes. It details the use of TVS diodes and thyristors to protect data lines against surge currents while maintaining low capacitance for high data rates. Different configurations address various common-mode voltage ranges and surge levels, ensuring compliance with IEC61000-4-5 standards. The paper includes calculations for peak protection voltages and discusses device characteristics and combinations for robust surge protection in industrial applications.
- Product Change NoticePDF 178 KB Jun 17, 2022
- Technical BriefPDF 188 KB R70TB0002EU0100 Rev.1.00 May 17, 2022
- Product Change NoticePDF 266 KB Jun 04, 2020
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- Application NotePDF 365 KB AN1978 Apr 12, 2023AI-generated Summary: The document details surge protection circuits for RS-485 transceivers, focusing on Level 4 (4kV) protection using gas discharge tubes (GDTs) for higher overvoltage and overcurrent tolerance. It compares protection schemes by component count, board area, and cost, highlighting that higher-level protection increases complexity and expense. The BOMs for Level 3 and Level 4 circuits list components such as transceivers, bidirectional TVS diodes, transient blocking units, thyristors or GDTs, and resistors. The GDT switching characteristic explains how it diverts transient currents to ground by transitioning from high impedance to a crowbar current path. Simpler protection can be achieved with overvoltage protected transceivers.
- Application NotePDF 207 KB an1985 Aug 19, 2022AI-generated Summary: Transient protection for RS-485 transceivers involves careful TVS diode design to prevent damage from high surge currents. Internal ESD structures in the ISL3152E share transient current with external TVS diodes, risking damage without current-limiting resistors. Using thick-film resistors under 200 ohms between TVS and transceiver limits surge current while minimizing bus voltage attenuation. Recommended PCB layout includes low-inductance ground and Vcc planes, 0603 resistors for wave or reflow soldering, and proper component placement to reduce inductance and enhance protection.
- Application NotePDF 474 KB AN1979 Aug 16, 2022AI-generated Summary: The document explains surge protection using Renesas’ Overvoltage Protected (OVP) transceivers with various protection schemes. It details the use of TVS diodes and thyristors to protect data lines against surge currents while maintaining low capacitance for high data rates. Different configurations address various common-mode voltage ranges and surge levels, ensuring compliance with IEC61000-4-5 standards. The paper includes calculations for peak protection voltages and discusses device characteristics and combinations for robust surge protection in industrial applications.
- Application NotePDF 178 KB r15an0002eu-rs-485-transient-protection Oct 28, 2019
- White PaperIndustrial PC designs increasingly demand compact form factors and flexible communication interfaces. This paper explores how modern dual-protocol transceivers support both RS-232 and RS-485 standards while offering high integration and advanced configuration options. It also presents application examples that illustrate their versatility in industrial systems.View More (13)
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