Overview
The ISO15DW is an isolated half-duplex differential line transceiver produced by Texas Instruments. It is designed for TIA/EIA RS-485 and RS-422 applications. This device is particularly useful in scenarios requiring galvanic isolation between the bus-line transceiver and the logic-level interface, making it ideal for long transmission lines and environments prone to electrical noise transients. The ISO15DW operates within a temperature range of -40°C to 85°C and is packaged in a 16-pin SOIC (DW) package.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOIC (DW) | - |
| Pins | 16 | - |
| Operating Temperature Range | -40 to 85 | °C |
| Data Rate | Up to 1 Mbps | - |
| 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 | - |
| Voltage - Supply | 3.15V ~ 3.6V | V |
| 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-V PK V IOTM, 560-V PK V IORM per DIN EN IEC 60747-17 (VDE 0884-17), 2500 V RMS 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 ISO15DW used for?
The ISO15DW is used as an isolated half-duplex differential line transceiver for TIA/EIA RS-485 and RS-422 applications, providing galvanic isolation between the bus-line transceiver and the logic-level interface.
- What is the operating temperature range of the ISO15DW?
The operating temperature range of the ISO15DW is -40°C to 85°C.
- What is the maximum data rate supported by the ISO15DW?
The ISO15DW supports signaling rates up to 1 Mbps.
- What kind of isolation does the ISO15DW provide?
The ISO15DW provides 2500 V RMS isolation rating per UL 1577 and CSA 62368-1, and 4000-V PK V IOTM, 560-V PK V IORM per DIN EN IEC 60747-17 (VDE 0884-17).
- What is the package type of the ISO15DW?
The ISO15DW is packaged in a 16-pin SOIC (DW) package.
- Is the ISO15DW RoHS compliant?
There is no specific RoHS information available for the ISO15DW, but it is generally expected to comply with relevant regulations.
- What are the key safety features of the ISO15DW?
The ISO15DW includes thermal shutdown protection, fail-safe receiver for bus open, short, idle, and meets various safety and regulatory approvals.
- Can the ISO15DW be used in high-noise environments?
Yes, the ISO15DW is designed to provide significant protection against electrical noise transients, making it suitable for high-noise environments.
- How many nodes can be supported on a bus using the ISO15DW?
The ISO15DW supports up to 256 nodes on a bus due to its 1/8 unit load capability.
- Is the ISO15DW still in production?
No, the ISO15DW is no longer in production.
