Digital inputs and outputs
Design a complete I/O solution for your PLC and industrial control systems
Design your system from start to finish with our portfolio of I/O architectures
Digital input/output (I/O) modules are essential for factory and process automation, providing vital connections to a wide range of sensors and actuators. On the input side, they connect to simple push buttons, proximity switches and high-speed digital encoders. Similarly, on the output side, I/O modules drive simple light bulbs, relays, contactors, actuators and motors. Our portfolio will help you find a competitive solution for isolated or nonisolated architectures for programmable logic controllers (PLCs) and industrial control systems.
Digital I/O architectures
Isolated digital inputs for power-efficient, high-density automation solutions
Isolated digital inputs provide galvanic isolation between a sensor input (or other input type) and a logic output for a host controller interface. When compared to traditional optocoupler solutions, our isolated digital input devices provide a simple low-power alternative with an accurate current limit.
With solutions providing up to eight channels, TI's isolated digital inputs provide substantial space savings and lower design complexity. This alternative to optocouplers enables the design of compact and high-density PLC I/O modules.
Benefits:
- Minimize bill of materials and board space
- Lower design complexity
- Reduce system power dissipation
Learn more about our digital input portfolio:
Digital Input Module, Digital Output Module
How To Simplify Isolated 24V PLC Digital Input Module Designs (Rev. C)
Broken Wire Detection Using An Optical Switch
High-side switches for driving and protecting loads
Our portfolio integrates protection and diagnostics to reliably drive resistive, capacitive or inductive loads in PLC digital outputs. For motors or long cables, our switches internally clamp the drain-to-source voltage to demagnetize load inductance. For safety modules, we offer 60V operating voltage tolerance and support for surge and electrical fast transient (EFT) standards.
Beyond the factory, wide operating ranges and external switch controller options support digital output driving motor drives, off-highway vehicles, energy storage and EV charging.
Features:
- Adjustable current limit
- Output clamp to demagnetize inductive loads
- Wire-break and short-to-supply detection
- Accurate current sensing and ADC
Learn more about our high-side portfolio:
Decrease factory downtime in 24-VDC power distribution with advanced load diagnostics
Power the factory floor with TI high-side switches
Digital Input Module, Digital Output Module
Low-side switches drive efficient and reliable systems
In PLC digital output modules, low-side switches control the flow of current to a load by switching the low side of the power supply. This module is typically used in applications that need to convert a digital signal into an analog output.
Our low-side switch design provides a redundant path to the load, with fault tolerance, as it can handle high currents and voltages up to 70V.
Benefits:
- High reliability
- Low power consumption
- Optional external clamps
- Easy integration
Learn more about our low-side portfolio:
Using DRV to Drive Solenoids (Rev. A)
High speed digital output PLC module reference design
Understanding Motor Driver Current Ratings (Rev. A)
Featured products for Low-side digital outputs
Push-pull digital outputs for precise and efficient control
Our push-pull digital output portfolio offers bidirectional control for precise automation tasks by combining high- and low-side switching in a single configuration. Our portfolio provides efficient sourcing and sinking of current, enabling fast, accurate motion control for motors, actuators and other high-performance applications. Achieve responsive, reliable operation, designed to optimize power delivery and streamline industrial processes.
Benefits:
- High power efficiency
- Bidirectional control
- Reliability
- Overcurrent protection
Learn more about our push-pull portfolio:
Featured reference designs for digital I/O
96-Channel Bidirectional Digital Input Module Reference Design for PLC
High Speed Digital Output PLC Module Reference Design
8-ch Parallel 0.5A Low Side Digital Output Module for PLC Reference Design
Digital Output Modules are a standard component in a PLC/PAC or DCS to control actuators, motors and other resistive, capacitive or inductive loads. Customers will benefit from this integrated protected low side driver with parallel interface as it makes the MCU interface easy to test together with (...)