Dual-voltage monitoring in a compact SOT-23-6 footprint
The MAX6828TUT is a multi-voltage supervisor from Analog Devices that monitors two independent supply rails, with one fixed threshold at 3.08 V and a second adjustable input for a user-defined trip point. The reset output is active-low, open-drain, and asserts for a minimum of 140 ms after all monitored voltages rise above their thresholds, providing a clean power-on reset signal to the downstream processor or FPGA.
Threshold selection and reset timing for system reliability
The adjustable input, monitored against an internal 1.25 V reference, allows the second channel to be set for a 2.5 V, 1.8 V, or any other rail via an external resistor divider. The 140 ms minimum reset timeout ensures the system supply has fully settled before the processor begins code execution, eliminating the need for an external delay capacitor in many designs. The open-drain output allows wire-OR connection with other reset sources, and the active-low polarity matches the reset input of most MCUs and SoCs.
Package, footprint, and compliance considerations
Housed in a 6-lead SOT-23 package (supplier device package SOT-23-6), the MAX6828TUT occupies minimal board area and is compatible with standard SOT-23-6 land patterns. The part is surface-mount and supplied in bulk packaging, suitable for both prototype builds and medium-volume reflow assembly. Note that the device is listed as RoHS non-compliant, which may affect its eligibility for certain end-product environmental certifications; verify against your local compliance requirements before specifying.