Analog Devices Inc./Maxim Integrated MAX6382XR17D3+

Overview

MAX6382XR17D3+ from Maxim Integrated is a push-pull active-high microprocessor supervisory circuit in 3-pin SC70 package, monitoring VCC from +1.8V to +5.5V with factory-set reset threshold of +1.67V (±2.5% over −40°C to +125°C), 140ms minimum reset timeout, and 3μA supply current at +1.8V. It ensures reliable power-on reset for low-voltage embedded controllers and portable systems.

For engineers reviewing the MAX6382XR17D3+ datasheet, MAX6382XR17D3+ pinout, MAX6382XR17D3+ application, or MAX6382XR17D3+ equivalent, key selection criteria include active-high push-pull output logic, guaranteed valid reset state down to VCC = 1V, ±2.5% threshold accuracy across automotive temperature range, and compatibility with space-constrained SC70 layouts.

Technical Context

The MAX6382XR17D3+ implements a precision bandgap-based voltage comparator with internal 1.67V reference and a digital timeout counter triggered on VCC drop below threshold. Its reset assertion is synchronized to VCC falling edge with 35µs propagation delay and immunity to transients ≤100mV overdrive.

No manual reset (MR) or auxiliary RESET IN inputs are present - this variant is a dedicated single-supply monitor with fixed threshold and timing, optimized for simplicity and minimal footprint in battery-powered instrumentation and microcontroller power sequencing.

Key Specifications

Pinout & Package

MAX6382XR17D3+ uses a 3-pin SC70 package (package code X3+2), with 1.3mm × 0.8mm footprint and 0.65mm lead pitch. Pin 1 = RESET (active-high push-pull), Pin 2 = VCC, Pin 3 = GND.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6382XR17D3+, MAX6326XR17D3+ requires host logic inversion and MAX6382XR17D3+ offers tighter threshold accuracy (±2.5% vs. ±3%) and lower glitch sensitivity - making it preferable for automotive and precision instrumentation where reset timing and voltage margin are critical.

Availability

MAX6382XR17D3+ is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, automotive body control units, and wearables requiring stable component supply with RoHS-compliant packaging and automotive-grade reliability.

Supply support for MAX6382XR17D3+ 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 demanding industrial, automotive, and computing applications.

The MAX6381–MAX6390 family delivers ultra-low-power, factory-trimmed reset supervisors targeting space- and power-constrained embedded systems where deterministic power-on sequencing and brownout protection are essential.

FAQ

What is the exact reset threshold voltage of MAX6382XR17D3+ and how stable is it over temperature?

The MAX6382XR17D3+ has a factory-set nominal reset threshold of +1.67V, with guaranteed tolerance of ±2.5% over the full operating temperature range of −40°C to +125°C. This stability is achieved via laser-trimmed bandgap reference and low-tempco design, ensuring consistent brownout detection without external calibration. The MAX6382XR17D3+ maintains this accuracy across automotive and industrial thermal profiles.

Does MAX6382XR17D3+ support manual reset functionality?

No, MAX6382XR17D3+ does not include a manual reset (MR) input. It is a dedicated single-supply VCC monitor with fixed threshold and timeout. Manual reset capability is only present in MAX6384/MAX6385/MAX6386/MAX6390 variants. For designs requiring operator-initiated reset, MAX6382XR17D3+ must be paired with external logic or replaced with an MR-enabled variant like MAX6385XR17D3+.

What is the minimum supply voltage at which MAX6382XR17D3+ guarantees correct reset output logic state?

The MAX6382XR17D3+ guarantees valid reset output logic state down to VCC = 1.0V. Below this voltage, the internal circuitry cannot maintain defined output behavior. This feature ensures reliable reset assertion during deep brownout conditions common in battery-powered systems, and is explicitly tested and specified in the datasheet's Absolute Maximum Ratings and Electrical Characteristics tables for MAX6382XR17D3+.

Can MAX6382XR17D3+ be used in automotive applications?

Yes - while the base MAX6382XR17D3+ is not automotive-qualified, the /V variant (e.g., MAX6382XR17D3/V+) is AEC-Q100 qualified and rated for −40°C to +125°C operation. The /V suffix denotes automotive qualification, including stress testing for humidity, vibration, and temperature cycling. For automotive body control or infotainment modules, specify the /V version to meet OEM reliability requirements.

What package type and footprint does MAX6382XR17D3+ use, and is it compatible with standard reflow processes?

MAX6382XR17D3+ uses the 3-pin SC70 package (land pattern 90-0208, package code X3+2), measuring 1.3mm × 0.8mm with 0.65mm lead pitch. It is RoHS-compliant (+ suffix) and qualified for standard lead-free reflow soldering per JEDEC J-STD-020, with peak temperature up to +260°C. The small outline supports high-density placement and automated assembly in compact consumer and industrial PCBs.