Product details

Rating Catalog Integrated isolated power No Isolation rating Basic Duplex Half Data rate (max) (MBps) 40 Working isolation voltage (VIOWM) (Vrms) 400 Surge isolation voltage (VIOSM) (VPK) 4000 Transient isolation voltage (VIOTM) (VPK) 4000 Withstand isolation voltage (VISO) (Vrms) 2500 ESD HBM (kV) 16 VCC1 (min) (V) 3.15 VCC1 (max) (V) 5.5 VCC2 (min) (V) 4.75 VCC2 (max) (V) 5.25 Fail safe Idle, Open, Short CMTI (min) (kV/µs) 25 Operating temperature range (°C) -40 to 85 Creepage (min) (mm) 8.34 Clearance (min) (mm) 8.34
Rating Catalog Integrated isolated power No Isolation rating Basic Duplex Half Data rate (max) (MBps) 40 Working isolation voltage (VIOWM) (Vrms) 400 Surge isolation voltage (VIOSM) (VPK) 4000 Transient isolation voltage (VIOTM) (VPK) 4000 Withstand isolation voltage (VISO) (Vrms) 2500 ESD HBM (kV) 16 VCC1 (min) (V) 3.15 VCC1 (max) (V) 5.5 VCC2 (min) (V) 4.75 VCC2 (max) (V) 5.25 Fail safe Idle, Open, Short CMTI (min) (kV/µs) 25 Operating temperature range (°C) -40 to 85 Creepage (min) (mm) 8.34 Clearance (min) (mm) 8.34
SOIC (DW) 16 106.09 mm² 10.3 x 10.3
  • Meets or exceeds the requirements of EN 50170 and TIA/EIA-485-A
  • Signaling rates up to 40 Mbps
  • Differential output exceeds 2.1 V (54 Ω load)
  • Low bus capacitance – 10 pF (maximum)
  • Up to 160 transceivers on a bus
  • 50 kV/µs typical transient immunity
  • Fail-safe receiver for bus open, short, idle
  • 3.3 V inputs are 5 V tolerant
  • Bus-pin ESD protection
    • 16 kV HBM between bus pins and GND2
    • 6 kV HBM between bus pins and GND1
  • Safety and regulatory approvals
    • 4000 V PK isolation, 560 V PK V IORM per DIN EN IEC 60747-17 (VDE 0884-17)
    • 2500 V RMS isolation rating per UL 1577
    • 4000 V PK isolation rating per CSA 62368-1
  • Meets or exceeds the requirements of EN 50170 and TIA/EIA-485-A
  • Signaling rates up to 40 Mbps
  • Differential output exceeds 2.1 V (54 Ω load)
  • Low bus capacitance – 10 pF (maximum)
  • Up to 160 transceivers on a bus
  • 50 kV/µs typical transient immunity
  • Fail-safe receiver for bus open, short, idle
  • 3.3 V inputs are 5 V tolerant
  • Bus-pin ESD protection
    • 16 kV HBM between bus pins and GND2
    • 6 kV HBM between bus pins and GND1
  • Safety and regulatory approvals
    • 4000 V PK isolation, 560 V PK V IORM per DIN EN IEC 60747-17 (VDE 0884-17)
    • 2500 V RMS isolation rating per UL 1577
    • 4000 V PK isolation rating per CSA 62368-1

The ISO1176 device is an isolated differential line transceiver designed for use in PROFIBUS applications. The device is ideal for long transmission lines because the ground loop is broken to provide for operation with a much larger common-mode voltage range. The symmetrical isolation barrier of each device is tested to provide 2500 V RMS of isolation per UL between the line transceiver and the logic level interface.

The galvanically isolated differential bus transceiver is an integrated circuit designed for bidirectional data communication on multipoint bus-transmission lines. The transceiver combines a galvanically isolated differential line driver and differential input line receiver. The driver has an active-high enable with isolated enable-state output on the ISODE pin (pin 10) to facilitate direction control. The driver differential outputs and the receiver differential inputs connect internally to form a differential input/output (I/O) bus port that is designed to offer minimum loading to the bus allowing up to 160 nodes.

The PV pin (pin 7) is provided as a full-chip enable option. All device outputs become high impedance when a logic low is applied to the PV pin. For more information, see the function tables in .

Any cabled I/O can be subjected to electrical noise transients from various sources. These noise transients can cause damage to the transceiver and/or nearby sensitive circuitry if they are of sufficient magnitude and duration. The ISO1176 can significantly reduce the risk of data corruption and damage to expensive control circuits.

The device is characterized for operation over the ambient temperature range of –40°C to +85°C.

The ISO1176 device is an isolated differential line transceiver designed for use in PROFIBUS applications. The device is ideal for long transmission lines because the ground loop is broken to provide for operation with a much larger common-mode voltage range. The symmetrical isolation barrier of each device is tested to provide 2500 V RMS of isolation per UL between the line transceiver and the logic level interface.

The galvanically isolated differential bus transceiver is an integrated circuit designed for bidirectional data communication on multipoint bus-transmission lines. The transceiver combines a galvanically isolated differential line driver and differential input line receiver. The driver has an active-high enable with isolated enable-state output on the ISODE pin (pin 10) to facilitate direction control. The driver differential outputs and the receiver differential inputs connect internally to form a differential input/output (I/O) bus port that is designed to offer minimum loading to the bus allowing up to 160 nodes.

The PV pin (pin 7) is provided as a full-chip enable option. All device outputs become high impedance when a logic low is applied to the PV pin. For more information, see the function tables in .

Any cabled I/O can be subjected to electrical noise transients from various sources. These noise transients can cause damage to the transceiver and/or nearby sensitive circuitry if they are of sufficient magnitude and duration. The ISO1176 can significantly reduce the risk of data corruption and damage to expensive control circuits.

The device is characterized for operation over the ambient temperature range of –40°C to +85°C.

Download View video with transcript Video

Similar products you might be interested in

open-in-new Compare alternates
Pin-for-pin with same functionality to the compared device
ISO1450 ACTIVE EMC protected, 50-Mbps, half-duplex, 5-kVrms isolated RS-485 & RS-422 transceiver This updated device has a higher isolation rating, increased transceiver EMC protection, wider supply range and stronger CMTI

Technical documentation

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

ISO1176EVM — ISO1176EVM Evaluation Module

The EVM can be used to evaluate device parameters while acting as a guide for board layout. The board allows the connection of a 50 ohm coaxial cable (via an SMA connector) to connect to instrumentation, or to 54-ohm controlled impedance cable of varying lengths (via a female header or (...)

User guide: PDF
Not available on TI.com
Simulation model

ISO1176_3 IBIS Model

SLLC328.ZIP (19 KB) - IBIS Model
Simulation model

ISO1176_5 IBIS Model

SLLC327.ZIP (18 KB) - IBIS Model
Reference designs

TIDA-00128 — Low-Power, Low-Noise Analog Front End Design for Circuit Breakers (ACB/MCCB-ETU)

This reference design is intended for use in molded case circuit breakers (MCCB) electronic trip units.  The op amp based design acts as current monitoring for over-current earth fault relays. Utilizing a low cost op amp, this design provides a pick-up (A) accuracy ±10 % and time delay (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-00191 — Analog Front End for Motor Electronic Overload Relays with Enhanced Current Range

This reference design is the analog front end (AFE) for an electronic overload relay, used for monitoring and protecting motors from overcurrent or undercurrent events. It is an ideal tool for developers creating overload relays for sensitive AC motors in industrial applications. This programmable (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-00012 — High Efficiency Isolated CAN & Profibus Interface Reference Design

The high-efficiency isolated CAN and Profibus interface reference design is intended for use in industrial systems that require isolated power for CAN and/or Profibus transceivers. This design highlights the ability to completely shut off both the power converter and data transceivers with just one (...)
Test report: PDF
Schematic: PDF
Package Pins Download
SOIC (DW) 16 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos