Dual-rail supervisor in a SOT-23-6
The MAX6826RUT from Maxim is a multi-voltage supervisor that monitors two independent supply rails. One channel has a fixed threshold of 2.63V; the second channel accepts an adjustable threshold via an external resistor divider. The push-pull, totem-pole output asserts reset active low when either monitored voltage drops below its threshold and holds reset for a minimum of 140ms after all rails return above threshold. Rated for the -40°C to 125°C industrial temperature range, this supervisor suits equipment that lives under the hood or on a factory floor — engine ECUs, outdoor base stations, motor drives where the controller board sees ambient heat from the cabinet. The SOT-23-6 package fits tight layouts alongside the power entry stage.
Push-pull output — no external pull-up needed
The push-pull output (totem pole) drives the reset line high or low without requiring an external pull-up resistor. That saves one component per supervisor channel and keeps the BOM count low. Open-drain supervisors need that resistor; this part does not. The active-low reset polarity matches the convention used on most MCUs and SoCs that expect a low-true reset signal.
Thresholds and monitoring flexibility
The fixed 2.63V threshold monitors a 2.5V or 2.8V rail. The adjustable channel sets a trip point for a second rail using two resistors.
Lifecycle and compliance
The MAX6826RUT carries an active lifecycle status — no last-time-buy notice, no NRND flag. Note that the part is listed as RoHS non-compliant, so if your BOM requires full RoHS exemption compliance, verify the acceptable exemption status or check the lead-free variant in the same family.