Device translates and conditions the 24V digital output of sensors and switches

28-04-2015 | Mouser Electronics | Semiconductors

Maxim MAX31915 octal digital input translator is now in stock at Mouser. The device translates and conditions the 24V digital output of sensors and switches used in industrial, process, and building automation. These output signals are converted into 5V CMOS compatible signals required by microcontrollers. The device provides the front-end interface circuit of a programmable logic controller (PLC) digital input module. The signal voltage translation is performed in conjunction with input current limiting and low-pass filtering. Input current-limiting allows a significant reduction in power consumed from the field-supply voltage, as compared to traditional discrete resistor-divider implementations. Selectable on-chip low-pass filters allow flexible de-bouncing and filtering of sensor inputs based on the application. When no filtering is selected, the IC is capable of detecting pulses as short as 0.75┬Ás at its field inputs. Applications include digital input modules for programmable logic controllers (PLCs), industrial automation, building automation and process automation.

By Craig Dyball