Overview
The ISO3082DW is an isolated half-duplex differential line transceiver designed for TIA/EIA 485/422 applications, manufactured by Texas Instruments. This device is part of the ISO308x series, which includes isolated full- and half-duplex transceivers. The ISO3082DW is ideal for use in long transmission lines due to its ability to break ground loops, allowing for a larger common-mode voltage range. It provides significant protection against electrical noise transients, reducing the risk of damage to sensitive circuitry.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 16-SOIC (0.295", 7.50mm Width) |
| Operating Temperature Range | -40°C to 85°C |
| Number of Channels | 3 |
| Inputs - Side 1/Side 2 | 2/1 |
| Channel Type | Unidirectional |
| Voltage - Isolation | 2500 Vrms |
| Common Mode Transient Immunity (Min) | 25 kV/µs |
| Data Rate | Up to 20 Mbps (signaling rate), 200 kbps (typical data rate) |
| Supply Voltage | 3.15 V ~ 5.5 V, 4.5 V ~ 5.5 V |
| ESD Protection | 12 kV HBM between bus pins and GND2, 6 kV HBM between bus pins and GND1 |
| Safety Certifications | 4000 VPK basic insulation, 560 VPK VIORM per DIN EN IEC 60747-17, 2500 Vrms isolation per UL 1577, 4000 VPK isolation per CSA 62368-1 |
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
Applications
- Security systems
- Chemical production
- Factory automation
- Motor and motion control
- HVAC and building automation networks
- Networked security stations
Q & A
- What is the ISO3082DW used for?
The ISO3082DW is used as an isolated half-duplex differential line transceiver for TIA/EIA 485/422 applications.
- What is the operating temperature range of the ISO3082DW?
The operating temperature range is from -40°C to 85°C.
- What is the isolation voltage of the ISO3082DW?
The isolation voltage is 2500 Vrms.
- What are the key safety certifications of the ISO3082DW?
The device has certifications including 4000 VPK basic insulation, 560 VPK VIORM per DIN EN IEC 60747-17, 2500 Vrms isolation per UL 1577, and 4000 VPK isolation per CSA 62368-1.
- What is the typical data rate of the ISO3082DW?
The typical data rate is 200 kbps, though signaling rates can go up to 20 Mbps.
- Does the ISO3082DW have ESD protection?
- What are some common applications of the ISO3082DW?
Common applications include security systems, chemical production, factory automation, motor and motion control, HVAC and building automation networks, and networked security stations.
- Is the ISO3082DW RoHS compliant?
- What is the package type of the ISO3082DW?
The package type is 16-SOIC (0.295", 7.50mm Width).
- Does the ISO3082DW have thermal shutdown protection?
