Analog Devices Inc./Maxim Integrated MAX810TEUR+T10

Overview

MAX810TEUR+T10 from Maxim Integrated is a 3-pin SOT23-packaged microprocessor supervisory circuit with active-high push-pull RESET output, precision 3.08V reset threshold (±0.04V at +25°C), 140ms minimum reset timeout, and guaranteed operation down to VCC = 1V. It monitors +3.3V systems in portable equipment, automotive ECUs, and industrial controllers to prevent erroneous code execution during power-up, brownout, or shutdown.

For engineers reviewing the MAX810TEUR+T10 datasheet, MAX810TEUR+T10 pinout, MAX810TEUR+T10 application, or MAX810TEUR+T10 equivalent, this page delivers verified electrical parameters, thermal performance across –40°C to +105°C, supply current ≤50µA at VCC = 3.3V, and real-world interface guidance for μP reset pin compatibility and transient immunity.

Technical Context

The MAX810TEUR+T10 implements a precision bandgap-based voltage comparator with 30ppm/°C tempco to detect VCC falling below 3.08V, asserting an active-high RESET signal until VCC rises above threshold and remains stable for ≥140ms. Its push-pull output drives CMOS inputs directly without external pullup resistors.

Designed for single-supply monitoring of +3.3V rails, it guarantees valid RESET assertion down to VCC = 1V and rejects transients as short as 20µs with 100mV overdrive-enabling robust operation in noisy automotive and battery-powered environments without additional filtering components.

Key Specifications

Pinout & Package

MAX810TEUR+T10 is housed in a 3-pin SOT23 package (JEDEC MO-178AA) with 1.3mm × 2.9mm footprint and 0.95mm height, optimized for high-density PCB layouts in space-constrained applications.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microprocessor reset applications.

Compared with MAX809TEUR+T (active-low) and TPS3808G30DBVR (3.0V, looser tolerance), MAX810TEUR+T10 provides deterministic active-high reset timing at 3.08V with lowest supply current-critical for battery longevity and noise-immune automotive startup sequences.

Availability

MAX810TEUR+T10 is available at Aetrix Electronics and suitable for automotive engine control units, portable medical monitors, industrial PLC I/O modules, and smart energy meters requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX810TEUR+T10 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, automotive, communications, and computing applications.

The MAX810TEUR+T10 belongs to Maxim's microprocessor supervisory product line, engineered specifically for reliable power-on reset, brownout protection, and supply monitoring in safety-critical embedded systems.

FAQ

What is the exact reset threshold voltage of the MAX810TEUR+T10 and how tightly is it specified?

The MAX810TEUR+T10 has a nominal reset threshold of 3.08V, with a tolerance of ±0.04V at +25°C. Over the full operating temperature range of –40°C to +105°C, the threshold varies between 3.00V and 3.15V. This precision ensures consistent reset behavior in +3.3V systems without requiring design margin adjustments. The MAX810TEUR+T10 achieves this using a trimmed bandgap reference and low-drift comparator architecture.

Does the MAX810TEUR+T10 require an external pullup resistor on its RESET pin?

No, the MAX810TEUR+T10 does not require an external pullup resistor because it features a push-pull output stage that actively drives both HIGH and LOW states. Its RESET pin sources up to 150µA when HIGH and sinks up to 1.2mA when LOW, enabling direct connection to standard CMOS microprocessor reset inputs. This eliminates BOM cost and layout area associated with external resistors-unlike open-drain alternatives such as the MAX803 series.

What is the minimum VCC voltage at which the MAX810TEUR+T10 guarantees valid RESET output logic levels?

The MAX810TEUR+T10 guarantees correct RESET logic state (HIGH during fault, LOW otherwise) for VCC down to +1.0V. Below 1.0V, output behavior is not specified. This feature ensures deterministic reset signaling during deep brownout events common in automotive stop-start systems and battery-powered devices nearing end-of-life. The MAX810TEUR+T10 maintains this specification across its full –40°C to +105°C operating range.

How does the MAX810TEUR+T10 handle fast transients on the VCC supply line?

The MAX810TEUR+T10 rejects fast negative-going VCC transients as short as 20µs when the overdrive (VTH – VCC) is 100mV, per its electrical characteristics table. Its internal comparator incorporates hysteresis and slew-rate limiting to ignore supply noise that could cause spurious resets. This immunity is validated across temperature and ensures reliable operation in electrically harsh environments like automotive power domains and industrial motor drives-without requiring additional input filtering capacitors.

Is the MAX810TEUR+T10 qualified for automotive applications and what standards does it meet?

Yes, the MAX810TEUR+T10 is AEC-Q100 qualified for automotive applications. It meets stress test requirements for temperature cycling, humidity, and mechanical shock applicable to Grade 2 (–40°C to +105°C) devices. Its SOT23 package, 3.08V threshold calibrated for +3.3V systems, and 140ms reset timeout make it suitable for engine control units, body electronics, and ADAS sensor modules where functional safety and long-term reliability are mandatory. The MAX810TEUR+T10 is also RoHS-compliant and halogen-free.