Supply flexibility and interface
The EMC1823T-2E/9R: The I²C/SMBUS output lets it share the bus with other sensors and a host MCU — the bus address and protocol are standard, no proprietary handshake. Built-in features include a one-shot conversion mode for on-demand reads, a programmable temperature limit with an output switch that can assert an interrupt, plus standby and shutdown modes to cut quiescent current when the system sleeps. The 10-VFDFN package (2.5x2 mm body) fits tight PCB layouts where board area is at a premium.
Active production — no end-of-life concern
Microchip lists the EMC1823T-2E/9R as Active.