4.4V threshold, 130 ms timeout — the reset supervisor for a single supply rail
The DS1708ESA+: The reset output is configurable as active-high or active-low, both push-pull, so it drives the reset input of an MCU, DSP, or ASIC without an external pull-up.
130 ms minimum reset timeout — what it buys the system
The 130 ms minimum reset timeout gives the power supply time to stabilise after a brownout or power-up before the processor is released from reset. For a typical MCU with a 16 MHz crystal, 130 ms covers the oscillator start-up and regulator ramp — the supervisor holds the core in reset until the rail is solid. With a single voltage monitored, this part fits designs where only the main core supply needs supervision — no auxiliary rail sequencing. The 4.4V threshold is aimed at 5V nominal rails; the supervisor trips when the supply falls to 4.4V, which is 12% below the nominal 5V, leaving margin before the logic rails collapse.
Package and temperature grade
The DS1708ESA+ comes in an 8-SOIC package — the industry-standard 0.154-inch wide body, 3.90 mm width, 1.27 mm pitch. The supplier device package is 8-SOIC, so the PCB footprint matches any standard SOIC-8 land pattern. It covers factory-floor enclosures, outdoor telecom cabinets, and engine-bay electronics that see 85°C soak — but not the 125°C junction of under-hood automotive without derating.