Overview
The ISO15DWG4 is an isolated 3.3-V half-duplex differential line transceiver designed for TIA/EIA 485/422 applications, manufactured by Texas Instruments. This device is part of the ISOx5 family, which includes both half-duplex and full-duplex configurations. The ISO15DWG4 is particularly suited for applications requiring galvanic isolation between the bus-line transceiver and the logic-level interface, enhancing protection against electrical noise and transients.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Temperature | -40°C to 85°C | °C |
| Supply Voltage | 3.15V to 3.6V | V |
| Data Rate | Up to 1 Mbps | Mbps |
| Isolation Voltage | 2500 VRMS | VRMS |
| Common Mode Transient Immunity | 50 kV/μs (typical) | kV/μs |
| Package Type | 16-SOIC (0.295", 7.50mm Width) | |
| Number of Channels | 3 | |
| Inputs - Side 1/Side 2 | 2/1 |
Key Features
- Meets or exceeds TIA/EIA RS-485 requirements.
- 1/8 unit load, allowing up to 256 nodes on a bus.
- Signaling rates up to 1 Mbps.
- Thermal shutdown protection.
- Low bus capacitance – 16 pF (typical).
- Fail-safe receiver for bus open, short, or idle conditions.
- 3.3-V inputs are 5-V tolerant.
- Safety and regulatory approvals: 4000-VPK VIOTM, 560-VPK VIORM per DIN EN IEC 60747-17 (VDE 0884-17), and 2500 VRMS isolation rating per UL 1577 and 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 primary function of the ISO15DWG4?
The ISO15DWG4 is an isolated 3.3-V half-duplex differential line transceiver designed for TIA/EIA 485/422 applications.
- What is the operating temperature range of the ISO15DWG4?
The operating temperature range is -40°C to 85°C.
- What is the maximum data rate supported by the ISO15DWG4?
The device supports signaling rates up to 1 Mbps.
- What is the isolation voltage of the ISO15DWG4?
The isolation voltage is 2500 VRMS.
- What are the safety and regulatory approvals for the ISO15DWG4?
The device has approvals for 4000-VPK VIOTM, 560-VPK VIORM per DIN EN IEC 60747-17 (VDE 0884-17), and 2500 VRMS isolation rating per UL 1577 and CSA 62368-1.
- What types of applications is the ISO15DWG4 suitable for?
The device is suitable for security systems, chemical production, factory automation, motor and motion control, HVAC and building automation networks, and networked security stations.
- What is the package type of the ISO15DWG4?
The package type is 16-SOIC (0.295", 7.50mm Width).
- Does the ISO15DWG4 have thermal shutdown protection?
- Is the ISO15DWG4 5-V tolerant on its inputs?
- What is the typical bus capacitance of the ISO15DWG4?
The typical bus capacitance is 16 pF.
