Overview
The ISO3086DWR is a 20-Mbps, full-duplex, 2.5-kVrms isolated RS-485 and RS-422 transceiver produced by Texas Instruments. This device is part of the ISO308x family, which includes isolated full- and half-duplex differential line transceivers. The ISO3086DWR is packaged in a 16-pin SOIC (DW) package and is designed to meet or exceed TIA/EIA RS-485 requirements. It is ideal for applications requiring high-speed data transmission over long distances and provides robust protection against electrical noise and transients.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Signaling Rate | Up to 20 Mbps | Mbps |
| Unit Load | 1/8 unit load | - |
| Number of Nodes on a Bus | Up to 256 | - |
| Bus Capacitance | 16 pF (typical) | pF |
| Transient Immunity | 50 kV/μs (typical) | kV/μs |
| Operating Temperature Range | -40°C to 85°C | °C |
| Package Type | SOIC (DW) 16 pins | - |
| Isolation Voltage | 2500 V RMS (UL 1577), 4000 V PK (CSA 62368-1) | V RMS / V PK |
| ESD Protection | 12 kV HBM between bus pins and GND2, 6 kV HBM between bus pins and GND1 | kV HBM |
Key Features
- Meets or exceeds TIA/EIA RS-485 requirements
- Signaling rates up to 20 Mbps
- 1/8 unit load – up to 256 nodes on a bus
- Thermal shutdown protection
- Low bus capacitance – 16 pF (typical)
- 50 kV/μs typical transient immunity
- Fail-safe receiver for bus open, short, idle
- 3.3-V inputs are 5-V tolerant
- Bus-pin ESD protection
- Safety-related certifications: 4000-V PK basic insulation, 560 V PK V IORM per DIN EN IEC 60747-17, 2500 V RMS isolation per UL 1577, 4000 V PK isolation per CSA 62368-1
Applications
- Security systems
- Chemical production
- Factory automation
- Motor and motion control
- HVAC and building automation networks
- Networked security stations
Q & A
- What is the maximum signaling rate of the ISO3086DWR?
The ISO3086DWR supports signaling rates up to 20 Mbps.
- How many nodes can be connected on a bus using the ISO3086DWR?
The ISO3086DWR can support up to 256 nodes on a bus due to its 1/8 unit load capability.
- What is the operating temperature range of the ISO3086DWR?
The device operates from -40°C to 85°C.
- What type of package does the ISO3086DWR come in?
The ISO3086DWR is packaged in a 16-pin SOIC (DW) package.
- What level of isolation does the ISO3086DWR provide?
The device provides 2500 V RMS isolation per UL 1577 and 4000 V PK isolation per CSA 62368-1.
- Does the ISO3086DWR have ESD protection?
Yes, it has bus-pin ESD protection with 12 kV HBM between bus pins and GND2, and 6 kV HBM between bus pins and GND1.
- What safety certifications does the ISO3086DWR have?
The device is certified according to DIN EN IEC 60747-17, UL 1577, and CSA 62368-1.
- Is the ISO3086DWR suitable for use in harsh industrial environments?
Yes, it is designed to provide robust protection against electrical noise and transients, making it suitable for harsh industrial environments.
- Can the ISO3086DWR be used in applications requiring high-speed data transmission?
Yes, it supports high-speed data transmission up to 20 Mbps.
- Does the ISO3086DWR have thermal shutdown protection?
Yes, it includes thermal shutdown protection to prevent overheating.
