Analog Devices Inc./Maxim Integrated DS1813-15

Overview

DS1813-15 from Maxim Integrated is a precision voltage-monitoring reset IC with pushbutton support, designed for microprocessor power-up/power-down supervision. It features a 4.13V typical VCC trip point (±15% tolerance), 150ms reset timeout, open-drain RST output with internal 5.5kΩ pullup, and operates from -40°C to +85°C in SOT-23 or TO-92 packages - used in embedded controllers requiring reliable brownout detection and manual reset.

For engineers reviewing the DS1813-15 datasheet, DS1813-15 pinout, DS1813-15 application, or DS1813-15 equivalent, key selection criteria include trip voltage accuracy, reset timeout stability, pushbutton debounce timing, open-drain drive capability, and industrial temperature range compliance.

Technical Context

The DS1813-15 implements a precision bandgap-referenced comparator to detect VCC falling below 4.00V–4.24V (min–max trip window), triggering an active-low reset signal. Its internal circuitry holds RST low for 100–300ms after VCC recovery, ensuring processor stabilization.

It supports dual reset initiation modes: automatic power-supply monitoring and external pushbutton override via the RST pin. The open-drain output with integrated 5.5kΩ pullup enables direct interface to 3.3V/5V logic without external components, while maintaining compatibility with standard microcontroller reset inputs.

Key Specifications

Pinout & Package

DS1813-15 is available in both TO-92 (3-pin through-hole) and SOT-23 (3-pin surface-mount) packages. Pin functions are identical across packages.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage-monitoring reset applications.

Compared with MAX809SEUR+T and TPS3808G15DBVR, the DS1813-15 uniquely integrates pushbutton reset functionality into its RST pin while maintaining a precise 4.13V trip point and ultra-low 30–40µA supply current - making it optimal for cost-sensitive, space-constrained 5V microcontroller supervision where manual reset is required.

Availability

DS1813-15 is available at Aetrix Electronics and suitable for industrial control systems, smart metering modules, and embedded HVAC controllers requiring stable component supply, long-term lifecycle support, and guaranteed traceability.

Supply support for DS1813-15 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Maxim Integrated (now part of Analog Devices) designs precision analog and mixed-signal ICs for industrial, communications, and computing applications.

The DS1813-15 belongs to Maxim's EconoReset family - engineered for low-cost, high-reliability power-supply monitoring in resource-constrained embedded systems with minimal external components.

FAQ

What is the exact VCC trip voltage range for DS1813-15?

The DS1813-15 has a guaranteed VCC trip point range of 4.00V (minimum) to 4.24V (maximum), with a typical value of 4.13V. This ±15% tolerance is laser-trimmed at wafer test and remains stable across the full -40°C to +85°C operating temperature range. The DS1813-15 uses an internal temperature-compensated bandgap reference to maintain this accuracy without external calibration.

Does DS1813-15 require an external pullup resistor on the RST pin?

No, the DS1813-15 includes an internal 5.5kΩ pullup resistor on the RST pin, eliminating the need for an external component in standard 5V applications. This feature reduces BOM count and PCB area. The DS1813-15 open-drain output can directly interface with microcontrollers requiring active-low reset signals, and the internal pullup ensures proper logic-high state when not asserted.

How does DS1813-15 handle manual reset via pushbutton?

The DS1813-15 allows manual reset using the same RST pin: pulling RST low for ≥1µs triggers a reset event, and the output remains low for 100–300ms (typically 150ms) after release. This dual-function pin design removes the need for a separate reset input. The DS1813-15 internally debounces the pushbutton signal and guarantees consistent timing independent of mechanical switch bounce.

What package options are available for DS1813-15?

The DS1813-15 is offered in two industry-standard packages: 3-pin TO-92 (through-hole) and 3-pin SOT-23 (surface-mount). Both share identical pinout (RST-VCC-GND) and electrical specifications. The SOT-23 variant supports automated assembly and saves board space, while the TO-92 version facilitates prototyping and repair. The DS1813-15 marking "813C" identifies the DS1813-15 variant per Maxim's part numbering scheme.

Is DS1813-15 compatible with 3.3V microcontrollers?

Yes, the DS1813-15 is compatible with 3.3V microcontrollers when used with appropriate level-shifting or pullup configuration. Although optimized for 5V systems (trip point ~4.13V), its open-drain RST output can be pulled to 3.3V via an external resistor or shared with other 3.3V logic. The DS1813-15's VCC supply must remain within 0–5.5V, and its reset timeout and pushbutton response remain fully functional regardless of host logic voltage, provided the RST line is properly terminated.