Five-rail supervisor in a 16-SOIC
The Maxim Integrated MAX8214AESE is a multi-voltage supervisor that monitors five independent supply rails with adjustable threshold voltages. Each threshold is set by an external resistor divider, so you tune the trip point per rail — no factory-programmed options. The active-low reset output is push-pull (totem pole), meaning it drives high or low without a pull-up resistor, which simplifies the connection to a microcontroller or MPU reset input. Reset timeout is a minimum of 1 ms, long enough to let the supply settle after a fault clears. Housed in a 16-SOIC package (0.154" body width, 3.90 mm), it's a surface-mount part that reflows well in a standard oven. The industrial temperature range of -40°C to 85°C covers most factory-floor, outdoor telecom, and motor-drive environments — no need to derate for a warm cabinet.
What the ratings mean for your BOM
Five monitored voltages let you track the core, I/O, memory, and auxiliary rails on a typical embedded board with a single IC. The 1 ms minimum reset timeout ensures the supervisor holds the system in reset long enough for all rails to reach regulation after a brownout. The push-pull output eliminates the external pull-up resistor that open-drain supervisors require. That saves one component per reset line and frees up board space, which matters when you're packing five monitor channels into a single 16-pin SOIC.