Open-drain output — pull-up resistor required
The open-drain output means the DS1813R-5+T&R can only pull the reset line low; it cannot drive it high. You need an external pull-up resistor to VCC (typically 10kΩ to 100kΩ) to hold the reset line high during normal operation. This also lets you wire-OR multiple open-drain reset outputs together, which is useful if you have multiple supervisors or watchdog circuits sharing a common reset line to the processor.
Industrial temperature range and package
Rated for -40°C to 85°C ambient, this supervisor suits industrial environments — motor drives, PLCs, outdoor telecom gear, and factory-floor controllers that see temperature swings. The SOT-23-3 package is a three-pin surface-mount footprint that fits tight layouts and is straightforward for reflow assembly. No exposed pad, no thermal concerns at the low quiescent current these parts draw.
Lifecycle and sourcing posture
The DS1813R-5+T&R carries an active lifecycle status with ROHS3 compliance. No stock or lead-time figure is published here because the supply picture changes daily; a quote request gets you the real-time answer.
