40-Mbps, half-duplex, isolated RS-485 & RS-422 transceiver with integrated transformer driver
Product details
Parameters
Package | Pins | Size
Features
- Meets or Exceeds the Requirements of EN 50170
and TIA/EIA-485-A - Signaling Rates up to 40 Mbps
- Easy Isolated Power Design with Integrated
Transformer Driver - Typical Efficiency > 60% (ILOAD = 100 mA) - see
SLUU471 - Differential Output exceeds 2.1 V (54-Ω Load)
- Low Bus Capacitance 10 pF (Maximum)
- Fail-safe Receiver for Bus Open, Short, or Idle
- 50-kV/µs Typical Transient Immunity
- Safety and Regulatory Approvals
- 4242 VPK Basic Insulation per DIN V VDE V
0884-10 and DIN EN 61010-1 - 2500 VRMS Isolation for 1 minute per UL 1577
- CSA Component Acceptance Notice 5A, IEC
60950-1 and IEC 61010-1 Standards
- 4242 VPK Basic Insulation per DIN V VDE V
Description
The ISO1176T is an isolated differential line transceiver with integrated oscillator outputs that provide the primary voltage for an isolation transformer. The device is ideal for long transmission lines because the ground loop is broken to allow the device to operate with a much larger common-mode voltage range.
The symmetrical isolation barrier of each device is tested to provide 4242VPK of isolation per VDE for 60 seconds between the line transceiver and the logic-level interface.
The galvanically isolated differential bus transceiver is an integrated circuit designed for bi-directional 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 whenever the driver is disabled or VCC2 = 0.
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 near-by sensitive circuitry if they are of sufficient magnitude and duration. The ISO1176T 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.
Technical documentation
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
This document describes the ISO1176T/35T/3086T Evaluation Module (EVM). It is used to evaluate the ISO1176T PROFIBUS Transceiver, the ISO35T RS-485 transceiver, or ISO3086T RS-485 Transceiver. Because the devices are similar transceivers, and the printed-circuit board is the same for all three EVMs (...)
Features
400V peak Isolation, 560V peak VIORM
- UL 1577, IEC 60747-5-2 (VDE 0884,Rev. 2),
- IEC 61010-1, IEC 60950-1 and CSA Apporoved
Meets or Exceeds the Requirments of EN 50170 and TIA/EIA RS-485
Signaling Rate up to 40 Mbps
Differential Output exceeds 2.1V (54 ohm Load)
Low Bus Capacitance-10pF (MAX)
50kV/us (...)
Description
The smaller EVM version shows the customer the space required for their design. This circuit provides an isolated, 40 Mbps, 3.3V to 5V Profibus interface using the ISO1176T, isolated Profibus transceiver and the TPS high accuracy linear regulator. The circuit achieves signal and power isolation and (...)
Features
Description
This document describes the ISO1176T/35T/3086T Evaluation Module (EVM). It is used to evaluate the ISO1176T PROFIBUS Transceiver, the ISO35T RS-485 transceiver, or ISO3086T RS-485 Transceiver. Because the devices are similar transceivers, and the printed-circuit board is the same for all three EVMs (...)
Features
4000 Vpeak Isolation
Bus-Pin ESD Protection
- 16 kV HBM Betweent Bus-Pins and GND2
- 6 kV HBM Between Bus-Pins and GND1
1/8 unit Load - Up to 256 Nodes on a Bus
Designed for RS-458 and RS-422 Applications
Signaling Rates up to 1 Mbps
Thermal Shutdown Protection
Low Bus Capacitance - 16 pF (Typ)
50 kV/us (...)
Software development
Features
ARM9 frequency: Up to 375 MHz
Data rates (baud): 12M, 6M, 3M, 1.5M, 500k, 187.5k, 93.75k, 19.2k, 9.6k
DPv0 support: Cyclic exchange of data and diagnosis
DPv1 support: Acyclic/cyclic data exchange and alarm handling
DPv2 support: Not yet supported, please contact TI for additional information
Response time: (...)
Reference designs
CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| SOIC (DW) | 16 | View options |
Ordering & quality
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