Overview
The ISO15DWR is a 1-Mbps, half-duplex, isolated RS-485 and RS-422 transceiver produced by Texas Instruments. This device is designed to meet or exceed TIA/EIA RS-485 requirements and is ideal for applications requiring high-speed data transmission over long distances. The ISO15DWR features capacitive coupling for isolation, ensuring a high level of protection against electrical noise and transients. It operates within a wide temperature range of -40°C to 85°C, making it suitable for various industrial and commercial environments.
Key Specifications
| Specification | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Technology | Capacitive Coupling |
| Type | RS422, RS485 |
| Isolated Power | No |
| Number of Channels | 3 |
| Inputs - Side 1/Side 2 | 2/1 |
| Channel Type | Unidirectional |
| Voltage - Isolation | 2500Vrms |
| Common Mode Transient Immunity (Min) | 25kV/µs |
| Data Rate | 1Mbps |
| Voltage - Supply | 3.15V ~ 3.6V |
| Operating Temperature | -40°C ~ 85°C |
| Mounting Type | Surface Mount |
| Package / Case | 16-SOIC (0.295", 7.50mm Width) |
Key Features
- Meets or exceeds TIA/EIA RS-485 requirements
- 1/8 unit load – Up to 256 nodes on a bus
- Signaling rates up to 1 Mbps
- 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
- Safety and regulatory approvals: 4000-VPK VIOTM, 560-VPK VIORM per DIN EN IEC 60747-17, 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 ISO15DWR used for? The ISO15DWR is used for isolated half-duplex differential line transmission in TIA/EIA 485/422 applications.
- What is the data rate of the ISO15DWR? The data rate of the ISO15DWR is up to 1 Mbps.
- What is the isolation voltage of the ISO15DWR? The isolation voltage of the ISO15DWR is 2500Vrms.
- What are the operating temperature ranges for the ISO15DWR? The operating temperature range for the ISO15DWR is -40°C to 85°C.
- Does the ISO15DWR have thermal shutdown protection? Yes, the ISO15DWR has thermal shutdown protection.
- What is the typical transient immunity of the ISO15DWR? The typical transient immunity of the ISO15DWR is 50 kV/µs.
- Is the ISO15DWR RoHS compliant? Yes, the ISO15DWR is RoHS compliant.
- What package type does the ISO15DWR come in? The ISO15DWR comes in a 16-SOIC (DW) package.
- What are the safety and regulatory approvals for the ISO15DWR? The ISO15DWR has safety and regulatory approvals including 4000-VPK VIOTM, 560-VPK VIORM per DIN EN IEC 60747-17, and 2500 VRMS isolation rating per UL 1577 and CSA 62368-1.
- Can the ISO15DWR be used in harsh environments? Yes, the ISO15DWR is suitable for use in harsh environments due to its extended temperature ratings and high isolation voltage.
