5V supervisor with 170ms reset timeout
The TPS3851G50EDRBT is a single-channel voltage supervisor from Texas Instruments, monitoring a 5V rail and asserting an active-low reset for a minimum of 170ms after the supply crosses the threshold. This reset timeout is long enough to let a typical MCU or FPGA complete its internal power-up sequence before the processor sees the release edge. The open-drain output lets you wire-OR the reset signal with other supervisors or a manual reset button, pulling the line low when any fault occurs.
125°C junction — under-hood or furnace-side
The 8-SON package's exposed pad helps keep the die temperature within spec when the supervisor is powered from a 5V rail that may see ripple. Compared to the TLV803EA29VDBZR, which has a 130ms minimum reset timeout and a 1V supply range, the TPS3851G50EDRBT is fixed at 5V threshold with a longer 170ms timeout — a better fit for 5V-only systems where the processor needs more time to stabilise before the reset releases.
No end-of-life notice or last-time-buy date has been issued. Sourcing is per RFQ — we confirm current availability and pricing at quote time. The base product number TPS3851 covers the family; the G50EDRBT suffix locks the 5V threshold, active-low output, and 8-SON package.