iso UART Transceiver IC The TLE9015DQU is a battery monitoring transceiver IC, ideal for connecting multiple Balancing & Monitoring IC devices in a daisy chain within a Li-Ion battery. Its two UART and iso UART interface pairs facilitate ring communication, enhancing system availability at a low cost. Additionally, it enables bidirectional information flow with an error management unit featuring programmable inputs and outputs on each Balancing & Monitoring IC.