Analog Devices Inc./Maxim Integrated DS1810-15+

Overview

DS1810-15+ from Maxim Integrated (now Analog Devices) is a precision voltage-monitoring reset IC with push-pull output, designed to automatically restart microprocessors after power failure. It asserts an active-low reset for 150 ms after V_CC returns to tolerance, features a 4.00–4.24 V trip point, operates from 1.2 V to 5.5 V, and supports -40°C to +85°C industrial temperature range - used in embedded power-up sequencing and brownout protection.

For engineers reviewing the DS1810-15+ datasheet, DS1810-15+ pinout, DS1810-15+ application, or DS1810-15+ equivalent, key selection criteria include guaranteed 150 ms reset timeout, 4.12 V typical V_CC trip point, push-pull output capable of sinking 10 mA, valid RST operation down to V_CC = 1.2 V, and compatibility with TO-92 and SOT-23 packages.

Technical Context

The DS1810-15+ integrates a temperature-compensated voltage reference and comparator to detect V_CC deviations against its factory-trimmed 4.00–4.24 V threshold. Its internal timing circuit ensures minimum 100 ms and maximum 300 ms reset assertion after power recovery, with typical value 150 ms.

It uses a push-pull output stage - not open-drain - enabling direct interface with CMOS inputs without pull-up resistors. The device maintains valid RST logic states down to V_CC = 1.2 V, and with external 100 kΩ RST-to-GND resistor, sustains valid reset signaling even as V_CC approaches 0 V during power-down.

Key Specifications

Pinout & Package

DS1810-15+ is available in both TO-92 and SOT-23 packages. Both variants share identical 3-pin configuration and functional pin mapping.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage supervisor applications.

Compared with MAX6326–41D2T+ and TPS3808G15DBVR, the DS1810-15+ offers fixed 150 ms timeout and push-pull output - reducing component count and simplifying layout - while delivering matched 4.12 V trip accuracy ideal for cost-sensitive 5 V microcontroller systems.

Availability

DS1810-15+ is available at Aetrix Electronics and suitable for microcontroller power-up sequencing, brownout protection in industrial PLCs, and embedded data logger recovery requiring stable component supply and long-term manufacturability.

Supply support for DS1810-15+ 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

Analog Devices (via acquisition of Maxim Integrated) designs precision analog, mixed-signal, and power management ICs for industrial, automotive, and communications markets.

The DS1810-15+ belongs to Maxim's EconoReset™ family - engineered for cost-effective, single-function power monitoring in resource-constrained embedded systems where reliability and minimal external components are critical.

FAQ

What is the exact V_CC trip point range for DS1810-15+?

The DS1810-15+ has a guaranteed V_CC trip point range of 4.00 V to 4.24 V, with a typical value of 4.12 V. This specification is factory-trimmed and tested across the full -40°C to +85°C operating temperature range. The "15" suffix denotes the ±15% tolerance grade on the trip point, ensuring consistent brownout detection in 5 V systems using the DS1810-15+.

Does DS1810-15+ require an external pull-up resistor on the RST pin?

No, the DS1810-15+ features a push-pull output stage, so no external pull-up resistor is needed. Its RST pin actively drives high or low depending on V_CC status. This reduces BOM count and eliminates RC time constant uncertainties. The DS1810-15+ can directly interface with standard CMOS inputs, unlike open-drain supervisors that mandate external pull-ups.

How long does the DS1810-15+ assert reset after V_CC recovers?

The DS1810-15+ asserts the active-low reset signal for a guaranteed minimum of 100 ms and maximum of 300 ms after V_CC returns to tolerance, with a typical duration of 150 ms. This timing is internally generated and independent of external components. The DS1810-15+ uses this fixed timeout to ensure microprocessor and power supply stabilization before releasing reset.

Can DS1810-15+ operate below 1.2 V supply voltage?

The DS1810-15+ guarantees valid RST output operation down to V_CC = 1.2 V. Below that, the internal circuitry cannot sustain regulation - however, with a 100 kΩ resistor from RST to GND, the DS1810-15+ maintains a valid logic-low state even as V_CC collapses to 0 V, enabling robust power-down signaling. This behavior is explicitly characterized in the DS1810-15+ datasheet.

Which packages are offered for DS1810-15+?

The DS1810-15+ is available in both TO-92 through-hole and SOT-23 surface-mount packages. Both share identical pinout (RST-V_CC-GND), electrical specifications, and thermal ratings. The TO-92 variant supports manual prototyping and legacy board designs, while the SOT-23 version enables compact, automated assembly - making the DS1810-15+ adaptable across development and production stages.