Analog Devices Inc./Maxim Integrated MAX6384XS17D3

Overview

MAX6384XS17D3 from Maxim Integrated is a low-power microprocessor supervisory circuit with active-low push-pull reset output, factory-set 1.67V reset threshold (±2.5% over –40°C to +125°C), 140ms minimum VCC reset timeout, and debounced manual reset input. It monitors single-supply voltages from +1.0V to +5.5V and consumes only 3µA at +1.8V, enabling reliable power-on reset in battery-powered IoT sensors and portable medical devices.

For engineers reviewing the MAX6384XS17D3 datasheet, MAX6384XS17D3 pinout, MAX6384XS17D3 application, or MAX6384XS17D3 equivalent, key selection criteria include its 140ms reset timeout, 1.67V threshold accuracy, SC70-4 package footprint, MR input with internal 63kΩ pullup, and guaranteed reset validity down to VCC = 1V.

Technical Context

The MAX6384XS17D3 implements a precision bandgap-based voltage comparator with ±2.5% threshold accuracy across –40°C to +125°C and 60ppm/°C tempco. Its internal timer generates a fixed 140ms minimum reset assertion period after VCC rises above 1.67V.

It features a debounced manual reset input (MR) with 1µs minimum pulse width and 100ns glitch rejection, internally pulled up to VCC via 63kΩ, and guarantees correct reset logic state for supply voltages as low as 1.0V - critical for brownout resilience in ultra-low-voltage embedded systems.

Key Specifications

Pinout & Package

MAX6384XS17D3 is housed in a 4-pin SC70 package (X4-1), measuring 1.5mm × 1.0mm × 0.8mm, with wettable flanks for automated optical inspection. Pin 1 = VCC, Pin 2 = RESET, Pin 3 = MR, Pin 4 = GND.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6326XR17D3+, MAX6384XS17D3 adds MR functionality in a 4-pin SC70, simplifying front-panel integration; compared with TPS3124E17DBVR, it offers push-pull drive and tighter timeout control, reducing external component count and boot latency.

Availability

MAX6384XS17D3 is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, smart utility meters, and automotive body control units requiring stable component supply and long-term manufacturability.

Supply support for MAX6384XS17D3 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, automotive, communications, and computing markets.

The MAX6381–MAX6390 family delivers single/dual low-voltage, low-power µP reset circuits optimized for battery longevity, wide temperature operation, and minimal board area in space-constrained embedded systems.

FAQ

What is the exact reset threshold voltage of MAX6384XS17D3 and how stable is it over temperature?

The MAX6384XS17D3 has a factory-set nominal reset threshold of 1.67V, with guaranteed accuracy of ±2.5% over the full operating temperature range of –40°C to +125°C. Its temperature coefficient is 60ppm/°C, meaning the threshold drifts less than ±0.015V across the entire range - sufficient for robust brownout detection in industrial and automotive applications where supply rails vary with thermal load.

Does MAX6384XS17D3 require an external pullup resistor on the RESET pin?

No, MAX6384XS17D3 does not require an external pullup resistor on the RESET pin because it features an active-low push-pull output. The internal driver actively pulls the RESET line low during assertion and high during deassertion, eliminating the need for external components and reducing PCB footprint - a key advantage over open-drain alternatives like MAX6383 or TPS3124E17DBVR.

What is the function and electrical behavior of the MR pin on MAX6384XS17D3?

The MR (Manual Reset) pin on MAX6384XS17D3 is an active-low input with an internal 63kΩ pullup resistor to VCC. Driving MR low for ≥1µs forces reset assertion, which remains active for the full 140ms timeout after MR returns high. Its 100ns glitch rejection prevents false triggers, and it accepts standard TTL/CMOS logic levels - enabling direct connection to momentary switches or FPGA GPIO without external conditioning circuitry.

Can MAX6384XS17D3 operate reliably when VCC drops below 1.8V?

Yes, MAX6384XS17D3 is fully specified to operate and guarantee correct RESET output logic state down to VCC = 1.0V. This ensures deterministic behavior during deep brownout conditions - for example, when a lithium coin cell discharges from 3.0V to 1.1V. Its 3µA supply current at 1.8V and continued functionality at 1.0V make it ideal for energy-harvesting and ultra-low-power sensor nodes where supply collapse is expected.

What package type and dimensions does MAX6384XS17D3 use, and is it RoHS-compliant?

MAX6384XS17D3 uses the 4-pin SC70 package (package code X4-1), with nominal dimensions of 1.5mm × 1.0mm × 0.8mm and wettable flanks for solder joint inspection. The "+" suffix in the ordering code (e.g., MAX6384XS17D3+) explicitly denotes a lead-free, RoHS-compliant construction per JEDEC J-STD-020 moisture sensitivity level 1, suitable for standard reflow profiles without special handling.