MAX22190ATJ+

MAX22190ATJ+ is an IEC 61131-2 compliant industrial digital input device. This device translates eight, 24V current-sinking, industrial inputs to a serialized SPI-compatible output that interfaces with 3V to 5.5V logic. A current setting resistor allows the device to be configured for Type 1, Type 2, or Type 3 inputs. Field wiring is verified for proximity switches, by a second threshold detector on each input. When wire-break is enabled, the active-low FAULT output is asserted and a register flag is set if the input current drops below the wire-break threshold for more than 20ms. Additional diagnostics that assert active-low FAULT include over temperature, low 24V field supply, 24V field supply missing, and CRC communication error. For robust operation in industrial environments, each input includes a programmable glitch filter. It is used in applications such as programmable logic controllers, industrial automation, process automation, and building automation.

• Eight input channels with serializer, operates directly from field supply (7V to 65V)
• Accurate input-current limiters, energy less field-side LED drivers
• Input protection to ±40V with low-input leakage current, wire break detection
• Integrated field-supply voltage monitors, integrated overtemperature monitor
• 5-bit CRC code generation and transmission for error detection
• ±8kV contact ESD and ±15kV air gap ESD using minimum 1Kohm resistor
• ±1kV surge tolerant using minimum 1Kohm resistor
• Logic supply current is 13µA typical at (VVL – VGND = +5.5V)
• Load regulation is 4mV typical at (ILOAD = 1mA to 10mA, VDD24 = 24V)
• Operating temperature range from -40°C to +125°C, 32-pin TQFN package

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