What the MAX6356SZUT-T does on a multi-rail board
The MAX6356SZUT-T from Maxim Integrated is a 3-channel multi-voltage supervisor in a SOT-23-6 package. It monitors three supply rails simultaneously, with fixed thresholds at 2.32 V and 2.93 V plus one adjustable input, and asserts an active-low reset output (push-pull/totem pole) when any monitored voltage falls below its threshold. The reset timeout is a minimum of 100 ms, giving the system time to stabilize. Typical use cases include multi-voltage ASIC/FPGA boards, telecom line cards, and industrial controllers where a supervisor must sequence or guard several rails from a single small package.
Threshold selection and design margin
The two fixed thresholds—2.32 V and 2.93 V—monitor common logic rails with undervoltage-trip margin. The adjustable input sets a third threshold via an external resistor divider.
Package and mounting constraints
Surface-mount SOT-23-6 footprint. The supplier device package is the same SOT-23-6. Board layout should follow the Maxim recommended land pattern; the small body means the supervisor can sit near the power entry or the monitored IC without consuming much PCB area. No heatsinking is needed—the device draws negligible quiescent current.
Lifecycle and compliance note
The MAX6356SZUT-T is listed as Active. One important compliance detail: this part is marked RoHS non-compliant.