MAX22195ATJ+T

Sensor And Detector Interfaces Overview

The MAX22195ATJ+T is an octal industrial digital input device that translates eight 24V inputs to parallel CMOS outputs. It operates from a field supply of 7V to 65V or a logic supply of 3.0V to 5.5V, featuring a maximum propagation delay of 300ns and channel-to-channel skew of ±10ns. The device includes an integrated 3.3V LDO regulator capable of supplying up to 25mA. It supports configurable IEC 61131-2 Type 1, 2, and 3 inputs with current limits ranging from 0.56mA to 3.97mA via an external resistor. The component is housed in a 5mm x 5mm 32-TQFN package and operates within an ambient temperature range of -40°C to +125°C.

Sensor And Detector Interfaces Feature Summary

• High-speed parallel output for simultaneous signal delivery
• Configurable IEC 61131-2 compliant input types
• Integrated energyless LED drivers
• Built-in fault diagnostics including thermal shutdown

Sensor And Detector Interfaces Applications

• Programmable Logic Controllers
• Industrial Automation
• Process Automation
• Building Automation

Sensor And Detector Interfaces Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm RoHS compliance status and packaging details. Ensure the selected variant matches the required lead-free specifications for your manufacturing process. Cross-reference the part number with authorized distributors to confirm availability and authenticity before placing orders.

Sensor And Detector Interfaces Selection Notes

Select this component when high-speed parallel response is required over serial interfaces. Verify the input current limit requirements against the available REFDI resistor values to ensure compatibility with Type 1, 2, or 3 sensor standards. Confirm that the power supply architecture supports either direct field voltage operation or external logic supply configurations.

Sensor And Detector Interfaces Part Context

This device belongs to the MAX2219x family of industrial digital input devices designed for robust field environments. It shares functional similarities with the MAX22190 but differs by providing parallel outputs instead of serial SPI communication. This distinction makes it suitable for applications requiring immediate synchronous data access without microcontroller polling overhead.

Sensor And Detector Interfaces Replacement Considerations

The MAX22190ATJ+T serves as a related alternative within the same product family. While both devices offer octal industrial digital inputs, the MAX22190 provides serial SPI output rather than parallel outputs. Designers must evaluate whether the system requires parallel synchronization or can accommodate serial communication protocols.

Sensor And Detector Interfaces FAQ

How is the input current limit configured?

The input current limit is set by connecting a specific resistor value between the REFDI pin and GND. An 8.6kΩ resistor configures Type 1 and Type 3 inputs, while a 5.2kΩ resistor configures Type 2 inputs.

What conditions cause the READY output to deassert?

The READY output goes to high-impedance if the VDD24 field supply is too low, a fault is detected in the current-setting resistor (open or short), or the device enters thermal shutdown due to excessive temperature.

Can the device be powered solely by the VDD3 pin?

Yes, the MAX22195 can be powered by a 3.0V to 5.5V supply connected to the VDD3 pin. In this configuration, the VDD24 pin must be left floating, and the EXTVM pin should be connected to VDD3 to disable field supply monitoring.