HIGH-SPEED OCTAL DIGITAL INPUT FOR PLC AND AUTOMATION

Mouser Electronics is now stocking the MAX22195 octal industrial digital input device from Maxim Integrated. Designed to reduce size, power and system cost for programmable logic controller digital-input subsystems, the MAX22195 is a highly integrated IEC 61131-2-compliant digital input device for industrial, process and building automation applications.

The fault-tolerant, 5 x 5mm device translates eight 24V industrial inputs to a serialised CMOS-compatible, parallel outputs with propagation delay of less than 300ns from input to output for all channels. It interfaces with 3 or 5.5V logic and incorporates a current-setting resistor, allowing engineers to configure it for IEC 61131-2 type 1, 2, or 3 inputs. It includes an internal low dropout regulator that provides power to digital isolators and other field-side circuits, plus energy-less field-side LED drivers that meet the indicator light requirement of IEC 61131-2 with no additional power dissipation.

The device also offers surge protection to ±1 and ±8kV contact electrostatic discharge and ±15kV air gap electrostatic discharge protection to contribute to increased system robustness. It is supported by the MAX22195EVKIT evaluation system, which provides terminal blocks for all eight inputs and a single header for all eight outputs for easy monitoring and evaluation. Eight field-side LEDs indicate input status, and a ‘ready’ LED indicates that it is operating normally.

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