Two-channel supervisor for multi-rail sequencing
The Texas Instruments TPS3779CDRYT is a multi-voltage supervisor that monitors two independent supply voltages and asserts a single active-low reset output when either rail falls below its threshold. The reset output is push-pull, totem-pole style, eliminating the need for an external pull-up resistor and providing a clean logic-level signal to the downstream processor or FPGA. Thresholds are adjustable or selectable via external resistor dividers, giving the designer flexibility to set precise monitoring points for each rail without requiring a fixed-voltage variant.
Temperature range and package for harsh environments
Housed in a 6-pin SON package measuring 1.45 mm x 1.0 mm (6-SON), the TPS3779CDRYT fits tight PCB layouts common in portable instrumentation and sensor modules. Surface-mount assembly with the small SON footprint requires careful solder-paste stencil design to avoid bridging; the exposed pad aids thermal conduction to the board.