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:
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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.
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.
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.
Peripheral module boards (PMBs) provide an easy way to evaluate our digital IO devices.
PMB Key Features
| 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 | 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 |
MAX14912EVKITOctal HS or push-pull, SafeDemag surge protection with integrated diagnostics and LED matrix.
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MAX14914EVKITThe only fully software-configurable DIO push-pull, fast, and surge protection product with SafeDemag™.
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MAX22190EVKITFully IEC61131-2-compliant octal digital input with wire-break detection, integrated diagnostics, and LED matrix.
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Also See:
Digital Signal Isolators ›
IO-Link Transceivers and Binary Drivers ›
Go-IO PLC: Ultra-Portable IO On-the-Go ›
Worried About Heat in Your I/O Module? No Need to Sweat
