Overview
The ISO1211D, manufactured by Texas Instruments, is a high-performance isolated digital input receiver designed for industrial applications. This device is part of the ISO121x family, which meets IEC 61131-2 standards for 1, 2, and 3 class characteristics. It is specifically tailored for use in programmable logic controllers (PLCs), motor control systems, and grid infrastructure, offering a robust solution for digital input modules. The ISO1211D stands out for its precise current limiting, eliminating the need for field-side power and supporting both sinking and sourcing input configurations. Its compact design and high data rate of up to 4Mbps make it ideal for high-density I/O modules.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Input Voltage Range | ±60 | V | With reverse polarity protection |
| Operating Voltage | 2.25 to 5.5 | V | Supports 2.5V, 3.3V, and 5V controllers |
| Data Rate | 4 | Mbps | Minimum pulse width of 150ns |
| Isolation Rating | 2500 | Vrms | Basic insulation |
| Operating Temperature | -55 to 125 | °C | |
| Package | SOIC-8 |
Key Features
- Complies with IEC 61131-2 standards for digital inputs.
- Precise current limiting for low power consumption.
- No need for field-side power, simplifying design.
- High data rate supports fast operation in industrial applications.
- Compact SOIC-8 package suitable for high-density modules.
Applications
The ISO1211D is widely used in industrial automation, particularly in PLCs and motor control systems. Its ability to handle a wide range of input voltages and its robust isolation features make it suitable for grid infrastructure applications. Additionally, it is employed in safety-critical systems where reliable digital input reception is essential.
Q & A
What is the input voltage range of the ISO1211D?
The ISO1211D supports an input voltage range of ±60V, with reverse polarity protection.
Does the ISO1211D require field-side power?
No, the ISO1211D does not require field-side power, simplifying the design of digital input modules.
What is the maximum data rate supported by the ISO1211D?
The ISO1211D supports a maximum data rate of 4Mbps.
What are the typical applications of the ISO1211D?
Typical applications include PLCs, motor control systems, and grid infrastructure.
What is the isolation rating of the ISO1211D?
The isolation rating is 2500Vrms, providing basic insulation.
What package does the ISO1211D come in?
The ISO1211D is available in an SOIC-8 package.
What is the operating temperature range of the ISO1211D?
The operating temperature range is from -55°C to 125°C.
Can the ISO1211D be used in safety-critical systems?
Yes, the ISO1211D is suitable for safety-critical systems due to its reliable digital input reception.
What standards does the ISO1211D comply with?
The ISO1211D complies with IEC 61131-2 standards for digital inputs.
What is the power supply voltage range for the ISO1211D?
The power supply voltage range is from 2.25V to 5.5V, supporting 2.5V, 3.3V, and 5V controllers.
