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Industrial Digital I/O Interface ICs

High-voltage industrial digital input (DI) and digital output (DO) signals (also called binary signals), typically range in magnitude from 0 to 24V. Digital I/O signals are used by industrial automation and control equipment, operating in harsh and noisy environments, to communicate on/off status between remote devices and controllers.

Our industrial digital I/O ICs perform voltage level translation while providing circuit protection. Many also perform data serialization to allow economical operation through digital signal isolators.

Key Benefits:

Most robust solutions on the market with the highest integration.
Fast time-to-market with the best support in the industry.

Digital I/O Ebrief

Digital I/O Parametric Search

Digital Input ICs

Industrial digital input (DI) ICs interface between high-voltage signals from sensors on the factory floor and the lower voltages found in automation and control equipment such as industrial controllers. Our IEC61131-2-compliant digital input interface devices offer the smallest solution size, lowest power dissipation, and most robust operation with 1kV of surge protection and integrated diagnostics. Our parasitically powered digital input IC reduces power dissipation by up to 60 percent and does not require a discrete isolated power supply.

See All Digital Inputs

Digital Output ICs

Industrial digital output (DO) ICs are used for high-speed switching of high-voltage output signals in industrial automation and control applications. Our digital output drivers have very low on-resistance (reducing power dissipation and allowing increased channel density), integrated surge protection, diagnostics, and allow safe demagnetization of inductive loads.

See All Digital Outputs

Configurable Digital Input/Output ICs

Digital I/O devices allow a controller to configure a channel electronically as either a digital input or digital output, without the need to change hardware, thereby removing the limitation on the available card types. This provides greater design flexibility and reduces the costs associated with changes that may be required during project commissioning. Our DIO products are fully IEC compliant, software-configurable and include the patented SafeDemag^™ technology, which allows for quick and safe demagnetization of any size inductive load.

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Industrial Digital IO Evaluation Boards and Peripheral Modules

Peripheral module boards (PMBs) provide an easy way to evaluate our digital IO devices.

PMB Key Features

Powered from a Single 3.0V to 5.5V Logic Supply, Without the Need for a 24V Field Supply
Configured for IEC 61131-2 Type 1 and Type 3 Sensor Inputs
Proven PCB Layout
Works with USB2PMB2# or USB2GPIO# Adapter and Munich GUI Software

Product Selector Table Featured Products Design Resources

Industrial Digital I/O Interface Product Selector Table

Device Type	Device Evaluated	Device Description	Evaluation Kit	Peripheral Module Board
Digital Input	MAX22190	8-Channel Industrial Digital Input with Diagnostics	MAX22190EVKIT	MAX22190PMB
Digital Input	MAX22191	Single-Channel Parasitically Powered Digital Input	MAX22191EVKIT	MAX22191PMB
Digital Input	MAX22192	Octal Industrial Digital Input with Diagnostics and Digital Isolation	MAX22192EVKIT
Digital Input	MAX22195	High-Speed, Octal, Industrial Digital Input with Parallel Output	MAX22195EVKIT
Digital Output	MAX14912	8-Channel High-Speed, Digital Output Driver	MAX14912EVKIT	MAX14912PMB
Digital IO	MAX14914	Single-Channel Driver, Configurable as DI or DO	MAX14914EVKIT	MAX14914PMB
Digital Output	MAX14915	8-Channel Industrial Digital Outputs with Diagnostics	MAX14915EVKIT
Digital Output	MAX14916	8-Channel 1A/4-Channel 2A Industrial Digital Outputs with Diagnostics	MAX14916EVKIT

Companion Board	Device Evaluated	Description	Board Number
Adapter Board	-	Low-cost, easy-to-use USB-to-I²C/SPI/GPIO interface adapter board	USB2GPIO
Isolation Board	MAX14483	Provide isolation between the USB adapter board and any peripheral module board	USB2GPIOISO