Analog Devices Inc./Maxim Integrated MAX6382XR22D3+

Overview

MAX6382XR22D3+ from Maxim Integrated is a 3-pin SC70 packaged microprocessor supervisory circuit with active-high push-pull reset output, factory-set 2.19V reset threshold (±2.5% over -40°C to +125°C), and 140ms minimum reset timeout. It monitors VCC from +1.8V to +5.0V while drawing only 3μA at +1.8V, and guarantees valid reset state down to VCC = 1V. It is used in portable battery-powered equipment for reliable power-on reset sequencing.

For engineers reviewing the MAX6382XR22D3+ datasheet, MAX6382XR22D3+ pinout, MAX6382XR22D3+ application, or MAX6382XR22D3+ equivalent, key selection criteria include its fixed 2.19V reset threshold accuracy, 140ms timeout delay, active-high push-pull drive capability, SC70 package footprint, and guaranteed operation down to 1V supply voltage.

Technical Context

The MAX6382XR22D3+ implements a precision bandgap-based voltage comparator with ±2.5% threshold accuracy over temperature and 60ppm/°C tempco. Its internal timer generates a fixed 140ms minimum reset assertion period after VCC rises above 2.19V, independent of supply ramp rate.

This device belongs to the MAX6381–MAX6390 family of low-power μP supervisors and uses BiCMOS process technology. It features no manual reset input or auxiliary RESET IN pin - confirming it is a single-supply, basic reset monitor without user-adjustable inputs.

Key Specifications

Pinout & Package

MAX6382XR22D3+ is housed in a RoHS-compliant 3-pin SC70 package (package code X3+2), with 0.65mm pitch and exposed pad not connected internally.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6382XR22D3+, MAX809TRD3+T offers higher reset threshold and older qualification, while TPS3808G33DBVR delivers lower current but demands board rework due to reversed pin order and incompatible threshold - making MAX6382XR22D3+ optimal for 2.2V-rail systems needing minimal footprint and guaranteed 1V operation.

Availability

MAX6382XR22D3+ is available at Aetrix Electronics and suitable for portable medical sensors, battery-powered IoT nodes, and industrial HMI panels requiring stable component supply with automotive-grade temperature support (-40°C to +125°C).

Supply support for MAX6382XR22D3+ 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, and computing applications.

The MAX6381–MAX6390 product line delivers ultra-low-power, precision voltage supervisors optimized for battery-critical and thermally demanding embedded systems where deterministic reset behavior is non-negotiable.

FAQ

What is the exact reset threshold voltage of MAX6382XR22D3+ and how accurate is it over temperature?

The MAX6382XR22D3+ has a factory-set nominal reset threshold of 2.19V, with guaranteed accuracy of ±2.5% over the full operating temperature range of -40°C to +125°C. This value is confirmed in the Reset Thresholds table of the datasheet (suffix "22" corresponds to 2.19V nominal). The tempco is specified at 60ppm/°C, ensuring minimal drift across thermal extremes.

Does MAX6382XR22D3+ include a manual reset input (MR) or auxiliary RESET IN pin?

No, MAX6382XR22D3+ does not include a manual reset input or auxiliary RESET IN pin. Per the Selector Guide and Pin Description tables, only MAX6384–MAX6386 and MAX6390 feature MR, and only MAX6387–MAX6389 include RESET IN. MAX6382 is a basic single-supply supervisor with RESET, VCC, and GND pins only - confirmed by its 3-pin SC70 configuration and functional grouping in the ordering matrix.

What is the minimum supply voltage at which MAX6382XR22D3+ guarantees correct reset output logic state?

MAX6382XR22D3+ guarantees valid reset output logic levels down to VCC = 1.0V. The datasheet explicitly states "Reset Output State Guaranteed Valid Down to VCC = 1V", and electrical characteristics confirm VOL ≤ 0.3V and VOH ≥ 0.8×VCC at VCC ≥ 1.0V with appropriate load conditions. This ensures deterministic behavior during deep brownout recovery.

Can MAX6382XR22D3+ be used in automotive applications, and what qualification does it carry?

MAX6382XR22D3+ carries the "+" suffix indicating RoHS compliance but does not include the "/V" automotive qualification suffix. While it operates across -40°C to +125°C - matching AEC-Q100 Grade 2 temperature range - the specific MAX6382XR22D3+ variant is not AEC-Q100 certified. For automotive use, designers should select /V-trim versions (e.g., MAX6382XR22D3/V+T) explicitly listed in the Ordering Information table.

What are the absolute maximum ratings for VCC and RESET pins on MAX6382XR22D3+?

The absolute maximum rating for VCC is -0.3V to +6.0V relative to GND. For the RESET pin (active-high push-pull), the maximum voltage is VCC + 0.3V, and the maximum sink/source current per pin is 20mA. Exceeding these limits may cause permanent damage. These values are specified in the Absolute Maximum Ratings section of the MAX6381–MAX6390 datasheet Rev 6.