Analog Devices Inc./Maxim Integrated DS1810-5+TR

Overview

DS1810-5+TR from Maxim Integrated is a 5V 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 (4.50–4.75 V trip point), features temperature-compensated reference accuracy, operates from -40°C to +85°C, and supports valid RST output down to 0 V V_CC with external pull-down - used in embedded microcontroller power supervision.

For engineers reviewing the DS1810-5+TR datasheet, DS1810-5+TR pinout, DS1810-5+TR application, or DS1810-5+TR equivalent, key selection criteria include its 4.62 V typical V_CC trip point, 150 ms reset timeout, push-pull output capable of sinking 10 mA, operation down to 1.2 V supply, and TO-92/SOT-23 package compatibility for space-constrained industrial control and battery-backed systems.

Technical Context

The DS1810-5+TR integrates a precision temperature-compensated voltage reference and comparator to detect V_CC deviations outside ±5% of 5 V (4.50–4.75 V). Its internal logic generates a power-fail signal that forces RST low during undervoltage, then holds it active for 150 ms post-recovery to ensure processor and supply stabilization.

Unlike open-drain reset supervisors, the DS1810-5+TR uses a push-pull output stage enabling direct drive of CMOS inputs without external pull-up. It maintains valid RST state even as V_CC drops below 1.2 V when a 100 kΩ resistor connects RST to GND - critical for brown-out detection during full power collapse.

Key Specifications

Pinout & Package

DS1810-5+TR is supplied in RoHS-compliant TO-92 package (3-pin, 185 mil body) with lead-free plating. Pin assignment is identical across TO-92 and SOT-23 variants.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6326 and TPS3808G01DBVR, the DS1810-5+TR offers fixed 5 V ±5% trip with minimal external components and proven 0 V RST validity - ideal for cost-sensitive, space-constrained industrial designs where 150 ms reset timing and TO-92 compatibility are prioritized.

Availability

DS1810-5+TR is available at Aetrix Electronics and suitable for industrial motor control, smart energy metering, medical handheld diagnostics, and automotive body control modules requiring stable component supply and long-term lifecycle support.

Supply support for DS1810-5+TR 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, mixed-signal, and power management ICs for industrial, medical, and communications applications.

The DS1810-5+TR belongs to Maxim's EconoReset family - low-cost, single-supply voltage supervisors engineered for robust power-fail detection and microprocessor reset generation in cost-sensitive embedded systems.

FAQ

What is the exact V_CC trip point tolerance for DS1810-5+TR?

The DS1810-5+TR has a guaranteed V_CC trip point range of 4.50 V to 4.75 V, corresponding to ±5% of nominal 5 V. This tolerance is maintained across the full -40°C to +85°C operating temperature range using an integrated temperature-compensated voltage reference, as specified in the DC Electrical Characteristics table of the official datasheet.

Does DS1810-5+TR require an external pull-up resistor on the RST pin?

No, DS1810-5+TR does not require an external pull-up resistor because it features a push-pull output stage. The RST pin actively drives high or low depending on reset state. This eliminates the need for external components and reduces board space - a key advantage over open-drain reset ICs like the MAX6326 series.

Can DS1810-5+TR operate with V_CC below 1.2 V?

Yes, DS1810-5+TR maintains a valid RST output even as V_CC approaches 0 V when a 100 kΩ resistor is connected between RST and GND. This configuration allows the output to sink current reliably during full power collapse, enabling fail-safe reset assertion in battery backup and emergency shutdown circuits.

What package type is used for DS1810-5+TR?

DS1810-5+TR is supplied in the TO-92 package (3-pin, 185 mil body) with RoHS-compliant lead-free plating. The "+TR" suffix confirms tape-and-reel packaging and lead-free compliance per Maxim's part numbering convention. Pinout matches the SOT-23 variant: Pin 1 = RST, Pin 2 = V_CC, Pin 3 = GND.

How does DS1810-5+TR differ from DS1810-10+TR or DS1810-15+TR?

DS1810-5+TR differs solely in its V_CC trip point: 4.50–4.75 V (±5%), whereas DS1810-10+TR is ±10% (4.25–4.49 V) and DS1810-15+TR is ±15% (4.00–4.24 V). All share identical timing (150 ms reset hold), push-pull output, package, and temperature range - only the monitored voltage threshold changes between variants.