JAJSLU0A June 2023 – February 2024 ISO1228
PRODUCTION DATA
ISO1228 supports field side LED indication. The current through INx and RPAR is diverted to the LEDx pins once the voltage transition threshold VIH is exceeded on INx pins. The LEDs are thus powered by the digital input current, which saves system power dissipation. Similarly, once the INx voltage reduces below VIL, the LEDx pins are bypassed by internal switches shutting the LED off. The use of LED indication is optional. The LEDx pins can be connected directly to GND in sink mode provided wire-break detection is not used and V24V in source mode.