Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Supervisors

Analog Devices Inc./Maxim Integrated MAX6385XS19D7-T

Name: MAX6385XS19D7-T
Brand: Analog Devices Inc./Maxim Integrated
SKU: MAX6385XS19D7-T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: MAX6385XS19D7-T

Manufacturer:: Analog Devices Inc./Maxim Integrated

Category:: Supervisors

Package:: SC-82A, SOT-343

Datasheet:: MAX6385XS19D7-T.pdf

Description:: IC SUPERVISOR 1 CHANNEL SC70-4

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:1,603

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

MAX6385XS19D7-T from Maxim Integrated is a low-power, active-high push-pull μP supervisory circuit with factory-set 1.9V reset threshold, 1200ms V_CC reset timeout, and debounced manual reset input (MR). It monitors single supply voltage in battery-powered or space-constrained embedded systems and guarantees valid reset output down to V_CC = 1V. Designed for critical microprocessor power-up sequencing in portable instrumentation and industrial controllers.

For engineers reviewing the MAX6385XS19D7-T datasheet, MAX6385XS19D7-T pinout, MAX6385XS19D7-T application, or MAX6385XS19D7-T equivalent, key selection factors include its 1.9V ±2.5% threshold accuracy over –40°C to +125°C, 3μA supply current at 1.8V, 4-pin SC70 package, MR input with internal 63kΩ pullup, and guaranteed push-pull output behavior below 1V V_CC.

Technical Context

The MAX6385XS19D7-T implements a precision bandgap-based voltage comparator monitoring V_CC against a fixed 1.9V threshold, with ±2.5% tolerance across –40°C to +125°C and 60ppm/°C tempco. Its internal timer asserts the active-high RESET output for ≥1200ms after V_CC rises above threshold, ensuring reliable μP initialization during brownout recovery.

It features a dedicated MR input with 1µs minimum pulse width support, 100ns glitch rejection, and 200ns MR-to-RESET delay - enabling robust external reset initiation without external debounce. The push-pull output drives high (≥0.8×V_CC) when deasserted and low (≤0.3V at 1.2mA) when asserted, eliminating need for external pullup resistors.

Key Specifications

Parameter	Value and Actual Design Meaning
Reset Threshold	1.90V (nominal), ±2.5% over –40°C to +125°C - ensures accurate brownout detection across automotive and industrial temperature ranges
V_CC Reset Timeout	1200ms (minimum) - provides sufficient hold time for slow-ramping power supplies and complex boot sequences
Supply Current	3μA at V_CC = 1.8V - enables multi-year operation in coin-cell–powered IoT sensors and wearables
Operating Voltage Range	1.0V to 5.5V - supports valid reset assertion down to 1V and compatibility with 1.2V, 1.8V, 2.5V, 3.3V, and 5V logic domains
Output Type	Active-high push-pull - eliminates external pullup resistor, reduces BOM count, and ensures fast, rail-to-rail logic transitions
Manual Reset Input	MR with 63kΩ internal pullup - allows direct connection of momentary switch to GND; no external components required for basic reset function
Reset Output Validity	Guaranteed down to V_CC = 1V - maintains deterministic logic state during deep undervoltage conditions before complete power collapse

Pinout & Package

MAX6385XS19D7-T is housed in a RoHS-compliant 4-pin SC70 package (outline 21-0098, land pattern 90-0187), measuring 2.0mm × 2.1mm × 0.95mm - optimized for ultra-compact PCB layouts in portable electronics.

Pin/Terminal	Circuit Role	Design Meaning
1	V_CC	Primary supply input and monitored voltage source; accepts 1.0V–5.5V; powers internal comparator and timer
2	RESET	Active-high push-pull output; drives high (≥0.8×V_CC) when deasserted, low (≤0.3V) when asserted; no external pullup needed
3	GND	Analog and digital ground reference; must be connected directly to system ground plane for noise immunity
4	MR	Active-low manual reset input; internally pulled up to V_CC via 63kΩ resistor; assert by pulling to GND for ≥1µs

Key Features

Feature	Design Value
Factory-trimmed 1.9V threshold	Eliminates external resistor divider; achieves ±2.5% accuracy over full temperature range without calibration
1200ms minimum reset timeout	Ensures μP remains held in reset long enough for power supply stabilization and clock lock in FPGA/CPU applications
Debounced MR input with internal pullup	Reduces component count and board area; enables direct switch interface without RC network or Schmitt trigger
Valid operation down to V_CC = 1V	Prevents metastability on reset line during deep brownout, improving system reliability in battery-fail scenarios
3μA supply current at 1.8V	Extends battery life in always-on monitoring nodes; supports >10-year operation on CR2032 cells in low-duty-cycle systems

Applications

Portable Medical Sensors	Industrial PLC I/O Modules
Use Scenario: Wearable ECG patch with coin-cell power and Bluetooth LE MCU requiring fail-safe boot after battery insertion or voltage sag. IC Role / Device Role / Timing Role: Monitors 1.8V LDO output; asserts active-high RESET for ≥1200ms on power-up and brownout; MR enables user-initiated recalibration. Use Value: Guarantees clean μP startup even as battery voltage decays from 3.0V to 1.9V; 3μA quiescent current extends operational life beyond 24 months.	Use Scenario: DIN-rail mounted analog input module operating in harsh factory environments with fluctuating 24VDC supply. IC Role / Device Role / Timing Role: Supervises 3.3V system rail derived from switching regulator; detects undervoltage events and forces controlled reboot via active-high RESET. Use Value: ±2.5% threshold accuracy prevents spurious resets during load transients; 1200ms timeout accommodates slow-starting isolated DC/DC converters.
Automotive Body Control Units	Smart Energy Meters
Use Scenario: Low-voltage subsystem (e.g., door module) powered from vehicle battery via 5V LDO, subject to cold-crank and load-dump conditions. IC Role / Device Role / Timing Role: Resets 32-bit ARM Cortex-M MCU on V_CC drop below 1.9V; MR supports service-mode diagnostics via CAN-triggered reset. Use Value: Valid reset output down to 1V prevents latch-up during cranking (battery dips to ~6V → LDO output ~1.2V); AEC-Q100 qualified variants available.	Use Scenario: Revenue-grade meter with dual-supply architecture (3.3V MCU + 1.8V metrology ASIC) requiring synchronized reset on main AC-derived rail failure. IC Role / Device Role / Timing Role: Monitors 3.3V rail; generates 1200ms active-high pulse to hold both processors in reset until backup supercapacitor discharges safely. Use Value: Push-pull output drives heavy capacitive loads (≥100pF) without rise-time degradation; eliminates timing skew between processor and ADC domains.

Portable Medical Sensors

Industrial PLC I/O Modules

Use Scenario: Wearable ECG patch with coin-cell power and Bluetooth LE MCU requiring fail-safe boot after battery insertion or voltage sag.

IC Role / Device Role / Timing Role: Monitors 1.8V LDO output; asserts active-high RESET for ≥1200ms on power-up and brownout; MR enables user-initiated recalibration.

Use Value: Guarantees clean μP startup even as battery voltage decays from 3.0V to 1.9V; 3μA quiescent current extends operational life beyond 24 months.

Use Scenario: DIN-rail mounted analog input module operating in harsh factory environments with fluctuating 24VDC supply.

IC Role / Device Role / Timing Role: Supervises 3.3V system rail derived from switching regulator; detects undervoltage events and forces controlled reboot via active-high RESET.

Use Value: ±2.5% threshold accuracy prevents spurious resets during load transients; 1200ms timeout accommodates slow-starting isolated DC/DC converters.

Automotive Body Control Units

Smart Energy Meters

Use Scenario: Low-voltage subsystem (e.g., door module) powered from vehicle battery via 5V LDO, subject to cold-crank and load-dump conditions.

IC Role / Device Role / Timing Role: Resets 32-bit ARM Cortex-M MCU on V_CC drop below 1.9V; MR supports service-mode diagnostics via CAN-triggered reset.

Use Value: Valid reset output down to 1V prevents latch-up during cranking (battery dips to ~6V → LDO output ~1.2V); AEC-Q100 qualified variants available.

Use Scenario: Revenue-grade meter with dual-supply architecture (3.3V MCU + 1.8V metrology ASIC) requiring synchronized reset on main AC-derived rail failure.

IC Role / Device Role / Timing Role: Monitors 3.3V rail; generates 1200ms active-high pulse to hold both processors in reset until backup supercapacitor discharges safely.

Use Value: Push-pull output drives heavy capacitive loads (≥100pF) without rise-time degradation; eliminates timing skew between processor and ADC domains.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MAX6385XS26D7-T	2.63V reset threshold (vs. 1.90V); identical timing, package, and MR functionality	Suitable for 2.5V/2.8V supply monitoring instead of 1.8V systems	Select when supervising higher-voltage rails; same footprint and layout - only threshold differs
MAX6326XR19D7-T	Same 1.9V threshold and 1200ms timeout, but no MR input; 3-pin SC70 package (no MR pin)	Lacks manual reset capability; smaller footprint but reduced system-level control flexibility	Choose for cost-sensitive, space-constrained designs where external reset is unnecessary

Compared with MAX6385XS19D7-T, MAX6385XS26D7-T shifts threshold upward for higher-voltage rails while preserving all timing and interface behavior, whereas MAX6326XR19D7-T removes MR functionality and reduces pin count - trading system debuggability for minimal size and cost.

Availability

MAX6385XS19D7-T is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, automotive body control units, and smart energy meters requiring stable component supply across extended temperature and long product lifecycles.

Supply support for MAX6385XS19D7-T 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 demanding industrial, automotive, and computing applications - emphasizing low power, high reliability, and AEC-Q100 qualification.

The MAX6381–MAX6390 family delivers single/dual low-voltage μP reset circuits targeting battery-powered and thermally stressed systems where deterministic power-on reset and brownout immunity are critical.

FAQ

What is the exact reset threshold voltage of MAX6385XS19D7-T and how tightly is it specified?

The MAX6385XS19D7-T has a nominal reset threshold of 1.90V, with guaranteed tolerance of ±2.5% over the full operating temperature range of –40°C to +125°C. This means the actual threshold falls between 1.85V and 1.95V at +25°C, and between 1.85V and 1.95V across temperature - verified by design and production-tested per Maxim's specifications.

Does MAX6385XS19D7-T support manual reset, and what are the electrical requirements for the MR pin?

Yes, MAX6385XS19D7-T includes a debounced manual reset input (MR) with an internal 63kΩ pullup resistor to V_CC. To assert reset, drive MR low with a logic signal or momentary switch to GND for ≥1µs. The input accepts TTL/CMOS levels and rejects glitches <100ns. No external components are required for basic operation.

What is the minimum V_CC level at which MAX6385XS19D7-T guarantees correct RESET output logic state?

MAX6385XS19D7-T guarantees valid RESET output behavior down to V_CC = 1.0V. Below this, the output may become indeterminate. This feature ensures reliable reset signaling during deep brownout conditions - critical for graceful shutdown in battery-powered systems before complete power loss.

How does the 1200ms reset timeout of MAX6385XS19D7-T improve system reliability compared to shorter timeouts?

The 1200ms minimum reset timeout in MAX6385XS19D7-T ensures the microprocessor remains held in reset long enough for unstable power supplies (e.g., slow-starting DC/DC converters or supercapacitor-backed rails) to fully stabilize and for clocks to achieve lock - preventing premature code execution and memory corruption during power-up or recovery.

Is MAX6385XS19D7-T compatible with standard 4-pin SC70 footprints, and what are its thermal characteristics?

Yes, MAX6385XS19D7-T uses the industry-standard 4-pin SC70 package (outline 21-0098, land pattern 90-0187). Its thermal resistance is θ_JA = 322.6°C/W on a multilayer board. This allows safe operation at ambient temperatures up to +125°C with typical power dissipation <100μW - well within the 245mW absolute maximum rating.

MAX6385XS19D7-T Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc./Maxim Integrated

Series:: -

Package/Case:: SC-82A, SOT-343

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Programmable:: Not Verified

Type:: Simple Reset/Power-On Reset

Number of Voltages Monitored:: 1

Voltage - Threshold:: 1.9V

Output:: Push-Pull, Totem Pole

Reset:: Active High

Reset Timeout:: 1.2s Minimum

Operating Temperature:: -40°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SC-70-4

MAX6385XS19D7-T FAQ

1.How can I place an order for MAX6385XS19D7-T through Aetrix?

Please submit a Request for Quotation (RFQ) for MAX6385XS19D7-T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for MAX6385XS19D7-T reliable?

The price and inventory of MAX6385XS19D7-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6385XS19D7-T is usually 5 days.

3.What payment methods are accepted for MAX6385XS19D7-T?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6385XS19D7-T transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MAX6385XS19D7-T?

MAX6385XS19D7-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MAX6385XS19D7-T order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for MAX6385XS19D7-T?

For technical support, including MAX6385XS19D7-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6385XS19D7-T requirements.

6.How does Aetrix verify that MAX6385XS19D7-T is sourced from the original manufacturer or authorized distributors?

All MAX6385XS19D7-T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX6385XS19D7-T meets industry standards.

7.What is the process for return or replacement of MAX6385XS19D7-T?

All MAX6385XS19D7-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6385XS19D7-T, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The MAX6385XS19D7-T part is unused and in its original packaging.

Return procedure for MAX6385XS19D7-T:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…