Analog Devices Inc./Maxim Integrated DS1810-10+

Overview

DS1810-10+ from Maxim Integrated (now Analog Devices) is a precision voltage-monitoring reset IC with push-pull output, designed to supervise 5V power rails in microprocessor systems. It asserts an active-low reset for 150 ms after VCC returns to tolerance, features a 4.25V–4.49V trip threshold, operates from 1.2V to 5.5V, and supports -40°C to +85°C industrial temperature range.

For engineers reviewing the DS1810-10+ datasheet, DS1810-10+ pinout, DS1810-10+ application, or DS1810-10+ equivalent, key selection criteria include reset timeout stability, trip point accuracy, push-pull drive capability, low ICC (30–40 µA), and dual-package availability (TO-92/SOT-23) for legacy and space-constrained designs.

Technical Context

The DS1810-10+ uses an internal precision temperature-compensated voltage reference and comparator to detect VCC deviations against its factory-trimmed 4.37V typical trip point. Its push-pull output eliminates external pull-up resistors and maintains valid logic states down to VCC = 0 V when externally biased with a 100 kΩ resistor to ground.

During power-up, the device holds RST active for ≥100 ms (typical 150 ms) after VCC crosses the trip threshold; during power-down, it asserts reset within 2–5 µs of detecting out-of-tolerance VCC. Output sink capability reaches 10 mA at 0.4V, while sourcing is limited to 350 µA at 2.4V.

Key Specifications

Pinout & Package

DS1810-10+ is available in both TO-92 (3-lead through-hole) and SOT-23 (3-lead surface-mount) packages. Both share identical pin mapping and functional assignment.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX809TRD1+T and TPS3808G15DBVR, the DS1810-10+ delivers fixed 4.37V supervision with push-pull drive and zero-VCC RST validity-enabling simpler, more robust power-fail response in cost-sensitive industrial controllers without design overhead.

Availability

DS1810-10+ is available at Aetrix Electronics and suitable for industrial automation, medical instrumentation, and smart metering applications requiring stable component supply, long-lifecycle support, and proven field reliability in harsh environments.

Supply support for DS1810-10+ 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 high-reliability industrial, automotive, and communications systems.

The DS1810-10+ belongs to Maxim's EconoReset family-engineered for low-cost, high-accuracy power-supply monitoring in resource-constrained microprocessor-based equipment where simplicity and deterministic reset behavior are critical.

FAQ

What is the exact VCC trip voltage range for DS1810-10+?

The DS1810-10+ has a guaranteed VCC trip point range of 4.25V (minimum) to 4.49V (maximum), with a typical value of 4.37V. This 10% tolerance band is factory-trimmed and temperature-compensated, making DS1810-10+ suitable for precise 5V rail supervision without external calibration. The specification is validated across the full -40°C to +85°C operating temperature range.

Does DS1810-10+ require an external pull-up resistor on the RST pin?

No, DS1810-10+ does not require an external pull-up resistor because it features a push-pull output stage. The RST pin actively drives high or low, eliminating dependency on external components for logic-level definition. This simplifies PCB layout and improves noise immunity compared to open-drain supervisors like the MAX809 series. DS1810-10+ retains full RST functionality even when VCC drops to 0 V, provided a 100 kΩ resistor is connected from RST to GND.

How long does DS1810-10+ hold the reset signal active after power recovery?

DS1810-10+ holds the RST signal active for a guaranteed minimum of 100 ms and a maximum of 300 ms after VCC returns to an in-tolerance condition, with a typical duration of 150 ms. This timeout is internally generated and independent of external capacitors or resistors. The fixed delay ensures sufficient time for power supply stabilization and microprocessor core initialization before software execution resumes - a key reliability feature of DS1810-10+.

Can DS1810-10+ operate below 1.2V VCC?

DS1810-10+ is specified to function down to 1.2V VCC per its recommended operating conditions, and its internal circuitry remains active until VCC falls below that level. However, the RST output can maintain valid logic states even as VCC approaches 0 V - when a 100 kΩ resistor is connected from RST to GND. In that configuration, DS1810-10+ continues asserting reset during deep brownout, enabling safe shutdown sequences not possible with standard supervisors.

Which packages are offered for DS1810-10+ and are their pinouts identical?

DS1810-10+ is offered in both TO-92 (through-hole) and SOT-23 (surface-mount) packages. Both variants share identical pin numbering and functional assignment: Pin 1 = RST (active-low push-pull output), Pin 2 = VCC (supply input), Pin 3 = GND (ground). No redesign or layout change is required when migrating between packages, making DS1810-10+ ideal for prototyping-to-production transitions.