Texas Instruments ISO14xx Isolated Transceivers
Texas Instruments ISO14xx Isolated Transceivers are galvanically-isolated differential line transceivers for TIA/EIA RS-485 and RS-422 applications. These noise-immune transceivers are designed to operate in harsh industrial environments. The bus pins of these devices can endure high levels of IEC electrostatic discharge (ESD) and IEC electrical fast transient (EFT) events, eliminating the need for additional components on the bus for system-level protection. The devices are available for both basic and reinforced isolation.
These transceivers are used for long-distance communications. Isolation breaks the ground loop between the communicating nodes, allowing for a much larger common-mode voltage range. The symmetrical isolation barrier of each device is tested to provide 5000VRMS of isolation for 1 minute per UL 1577 between the bus-line transceiver and the logic-level interface.
The ISO14xx devices can operate from 1.71V to 5.5V on side 1, which lets the devices be interfaced with low-voltage FPGAs and ASICs. The wide supply voltage on side two, from 3V to 5.5V, eliminates the need for a regulated supply voltage on the isolated side. These devices support a wide operating ambient temperature range from –40°C to +125°C.
Features
- Compatible with TIA/EIA-485-A
- PROFIBUS Compatible at 5V Bus-side supply
- Bus I/O protection
- ± 30kV HBM
- ±16kV IEC 61000-4-2 Contact discharge
- ± 4kV IEC 61000-4-4 Electrical fast transient
- Low-EMI 500kbps data rate
- 1.71V to 5.5V Logic-side supply (VCC1), 3V to 5.5V Bus-side supply (VCC2)
- Failsafe receiver for Bus open, short, and idle
- 1/8 Unit load up to 256 nodes on Bus
- 100kV/µs (typical) High common-mode transient immunity
- Extended temperature range from –40°C to +125°C
- Glitch-free power-up and power-down for hot plug-in
- Wide-body SOIC-16 package
- Pin compatible to most isolated RS-485 transceivers
- Safety-related certifications
- All Certifications Planned
- 7071VPK VIOTM and 1500VPK VIORM (Reinforced and Basic Options) per DIN V VDE V 0884-11:2017-01
- 5000VRMS Isolation for 1 Minute per UL 1577
- IEC 60950, IEC 60601 and EN 61010 Certifications
- CQC, TUV, and CSA Certifications
Applications
- Grid infrastructure
- Solar inverter
- Factory automation and control
- Motor drives
- HVAC Systems and building automation
Associated Development Tool
Texas Instruments ISO1410DW Evaluation Module
Designed to evaluate the reinforced isolated RS-485 ISO1410 in 16-Pin wide body SOIC package.
Texas Instruments ISO1412DWEVM Evaluation Module
Designed to quickly and easily demonstrate the isolated RS-485 ISO1412 in a 16-Pin package.
Block Diagrams
