ANALOG DEVICES MAX22194ATJ+ Digital Input IC, Quad, Industrial, Sink/Source, 8 V to 65 V, -40 °C to 125 °C, TQFN-EP-32

MAX22194ATJ+ is an industrial quad digital input that translates four industrial 24V or TTL level inputs to logic level outputs. This device has a serial interface allowing configuration and reading of serialized data through SPI. The input channels are individually configurable as sinking (p-type) or sourcing (n-type) inputs. Current limiters on each digital input minimize power dissipation while ensuring compliance with the IEC 61131-2 standard. With a single current-setting resistor, the inputs are individually configurable for Type 1/3, Type 2, TTL, or HTL (high-impedance 24V levels). The current sinks or sources can be individually disabled. Every input channel has a programmable glitch/debounce filter. Applications include programmable logic controllers, factory automation, process control.

• V24 supply voltage range from 8V to 65V
• V24 supply current is 1.4mA typical at (V24 = 36V, REGEN open)
• VA load regulation is 4mV typical at (V24 = 12V, IA-LOAD = 1mA to 10mA)
• VA short-circuit current is 28mA typical at (V24 = 12V, VA shorted to GND)
• IEC 61000-4-5 surge ±1.2kV/42 ohm with Minimum 680 ohm pulse resistor at field inputs
• Addressable or daisy-chain SPI to reduce isolation channels
• 2.5V to 5.5V logic interface, LED driver matrix or GPO outputs
• VM glitch filter is 3µs typical at (VM glitch length that is filtered)
• Operating temperature range from -40°C to 125°C
• 32-pin TQFN package