Overview
The ISO3088DWRG4 is an isolated half-duplex differential line transceiver produced by Texas Instruments. It is designed for TIA/EIA 485/422 applications and offers high-speed data transmission with robust isolation features. The device is part of the ISO308x series, which includes full- and half-duplex transceivers suitable for various industrial and commercial applications. The ISO3088DWRG4 is particularly useful in scenarios requiring galvanic isolation to protect against electrical noise and ground loops, making it ideal for long transmission lines and sensitive control circuits.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Signaling Rate | Up to 20 Mbps | |
| Isolation Voltage | 2500 VRMS for 60 seconds (UL 1577) | |
| Operating Temperature | -40°C to +85°C | |
| Package Type | 16-SOIC | |
| Package Body Size | 10.30 mm × 7.50 mm | |
| Differential Input Resistance | 48 kΩ | |
| Differential Input Capacitance | 16 pF (typical) | |
| ESD Protection | 12 kV HBM between bus pins and GND2, 6 kV HBM between bus pins and GND1 | |
| Transient Immunity | 50 kV/μs (typical) |
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)
- Fail-safe receiver for bus open, short, idle
- 3.3-V inputs are 5-V tolerant
- Bus-pin ESD protection – 12-kV HBM between bus pins and GND2, 6-kV HBM between bus pins and GND1
- Safety-related 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
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 ISO3088DWRG4?
The maximum signaling rate is up to 20 Mbps.
- What is the isolation voltage rating of the ISO3088DWRG4?
The isolation voltage rating is 2500 VRMS for 60 seconds as per UL 1577.
- What is the operating temperature range of the ISO3088DWRG4?
The operating temperature range is -40°C to +85°C.
- What type of package does the ISO3088DWRG4 come in?
The ISO3088DWRG4 comes in a 16-SOIC package.
- What is the differential input resistance of the ISO3088DWRG4?
The differential input resistance is 48 kΩ.
- Does the ISO3088DWRG4 have ESD protection?
- What are some of the safety-related certifications for the ISO3088DWRG4?
The device has certifications such as 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.
- Can the ISO3088DWRG4 be used in security systems?
- Is the ISO3088DWRG4 tolerant to 5-V inputs on 3.3-V logic levels?
- What is the typical transient immunity of the ISO3088DWRG4?
The typical transient immunity is 50 kV/μs.
