My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6385XS19D3-T
- Part No.:
- MAX6385XS19D3-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6385XS19D3-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:1,874
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6385XS19D3-T from Maxim Integrated is a low-power microprocessor supervisory circuit with active-high push-pull reset output, factory-set 1.9V reset threshold (±2.5% over -40°C to +125°C), 140ms minimum VCC reset timeout, and debounced manual reset input. It monitors single supply voltage in battery-powered embedded systems where reliable power-on reset and brownout protection are critical.
For engineers reviewing the MAX6385XS19D3-T datasheet, MAX6385XS19D3-T pinout, MAX6385XS19D3-T application, or MAX6385XS19D3-T equivalent, key selection criteria include reset threshold accuracy at ultra-low VCC (valid down to 1V), MR input pullup resistance (63kΩ), SC70-4 package footprint, and immunity to negative-going VCC transients up to 35µs at 100mV overdrive.
Technical Context
The MAX6385XS19D3-T implements a precision bandgap-based reset comparator with ±2.5% threshold tolerance across -40°C to +125°C and 60ppm/°C tempco. Its internal timer guarantees a minimum 140ms reset assertion after VCC rises above 1.9V or after release of the active-low MR signal.
It features a dedicated debounced manual reset input with internal 63kΩ pullup resistor, enabling direct connection to momentary switches without external components. The active-high push-pull RESET output drives high during reset assertion and guarantees valid logic state for VCC ≥ 1V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 1.90V (nominal), ±2.5% over full temperature range - ensures accurate brownout detection for 1.8V/2.5V I/O domains |
| VCC Reset Timeout | 140ms (min) - provides sufficient hold time for μP initialization before release |
| Supply Current | 3μA at +1.8V - enables multi-year operation in coin-cell–powered devices |
| Operating Voltage Range | 1.0V to 5.5V - supports valid reset assertion even during deep brownout conditions |
| MR Input Pullup | 63kΩ - allows direct switch-to-GND interface with no external resistor required |
| Reset Output Type | Active-high push-pull - eliminates need for external pullup and simplifies interface to μP reset inputs |
| Transient Immunity | 35µs max glitch rejection at 100mV overdrive - suppresses noise-induced false resets on noisy rails |
Pinout & Package
MAX6385XS19D3-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 space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Primary supply input and monitored voltage rail - must be decoupled with 0.1µF capacitor near pin |
| 2 | RESET | Active-high push-pull reset output - drives high during reset; sinks current when deasserted |
| 3 | GND | Analog/digital ground reference - requires low-impedance connection to system ground plane |
| 4 | MR | Active-low manual reset input - internally pulled up to VCC; assert by pulling to GND |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 1.9V threshold | Eliminates external resistor divider and calibration effort for 1.8V core monitoring |
| 140ms guaranteed reset timeout | Meets JEDEC JESD78B requirements for μP reset hold time under slow-rising VCC |
| MR debounce & internal pullup | Supports direct mechanical switch interface without RC network or firmware polling |
| Valid operation down to VCC = 1V | Ensures deterministic reset behavior during deep undervoltage events |
| 3μA supply current at 1.8V | Reduces quiescent power in always-on subsystems by >50% vs. legacy reset ICs |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Wearable ECG patch operating from CR2032 coin cell with intermittent BLE transmission. IC Role / Device Role / Timing Role: Monitors 1.8V LDO output and asserts active-high RESET to ARM Cortex-M0+ during power-up and brownout. Use Value: 3μA quiescent current extends battery life beyond 3 years; 140ms timeout ensures full flash initialization before code execution. | Use Scenario: DIN-rail mounted analog input module powered by isolated 3.3V DC-DC converter. IC Role / Device Role / Timing Role: Provides fail-safe reset to FPGA configuration logic upon 3.3V rail collapse or operator-initiated diagnostics reset. Use Value: MR input enables field-service reset without power cycling; ±2.5% threshold stability prevents spurious resets across industrial temperature range. |
| Automotive Body Control Units | Smart Home Hub Power Management |
Use Scenario: 12V-to-1.8V/3.3V power tree in door module with CAN FD interface. IC Role / Device Role / Timing Role: Supervises 1.8V core rail and triggers MCU reset if voltage drops below 1.9V during load dump recovery. Use Value: Negative transient immunity (35µs @ 100mV) prevents false resets during alternator switching noise. | Use Scenario: Wi-Fi/BLE gateway with dual-rail PMIC supplying 1.1V CPU and 3.3V peripherals. IC Role / Device Role / Timing Role: Monitors 3.3V I/O rail and coordinates synchronized reset of SoC and wireless co-processor via shared RESET line. Use Value: Active-high push-pull output eliminates level-shifter requirement for 3.3V-tolerant reset inputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326XR19D3-T | Same 1.9V threshold and 140ms timeout, but active-low open-drain output requiring external pullup | Suitable only where host MCU accepts active-low reset with external biasing | Select when board layout already includes pullup or when interfacing to legacy µP with active-low reset pin |
| TPS3808G19DBVR | 1.9V threshold, 200ms timeout (not 140ms), 1.8V–6V VCC range, 1.6μA typical ICC | Higher VCC max rating and lower current, but lacks MR input and has different timing binning | Choose for ultra-low-power applications where 60ms longer timeout is acceptable and manual reset is unnecessary |
Compared with MAX6326XR19D3-T and TPS3808G19DBVR, the MAX6385XS19D3-T uniquely combines active-high push-pull drive, integrated MR pullup, and precise 140ms timeout - enabling simpler BOM, smaller PCB area, and deterministic reset coordination in dual-rail or switch-debounced systems.
Availability
MAX6385XS19D3-T is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, automotive body control units, and smart home hub power management requiring stable component supply and long-term production continuity.
Supply support for MAX6385XS19D3-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 power, sensing, and connectivity applications, with emphasis on reliability and low-power operation.
The MAX6381–MAX6390 family delivers single/dual-supply microprocessor supervisory circuits optimized for battery-powered, automotive, and industrial systems demanding high accuracy, low quiescent current, and robust noise immunity.
FAQ
What is the exact reset threshold voltage and tolerance for MAX6385XS19D3-T?
The MAX6385XS19D3-T has a factory-set nominal reset threshold of 1.90V, with guaranteed tolerance of ±2.5% over the full operating temperature range (-40°C to +125°C). This specification is validated per the Electrical Characteristics table in the official Maxim Integrated datasheet revision 7 (8/20), ensuring accurate brownout detection for 1.8V logic domains without external calibration.
Does MAX6385XS19D3-T support manual reset functionality, and how is it implemented?
Yes, MAX6385XS19D3-T includes a debounced manual reset input (MR) with an internal 63kΩ pullup resistor to VCC. Driving MR low forces an immediate reset assertion, which remains active for the full 140ms timeout after MR is released. No external components are needed - a simple momentary switch from MR to GND suffices, making it ideal for field-service or test-mode reset in compact designs.
What package type and dimensions does MAX6385XS19D3-T use?
MAX6385XS19D3-T uses a 4-pin SC70 package (outline number 21-0098, land pattern 90-0187), measuring 2.0mm × 2.1mm × 0.95mm. It is RoHS-compliant (+ suffix), rated for -40°C to +125°C operation, and designed for reflow soldering with peak temperature up to +260°C. This ultra-small footprint supports high-density layouts in portable and wearable electronics.
How does MAX6385XS19D3-T behave when VCC drops below 1.0V?
MAX6385XS19D3-T guarantees correct reset output logic state down to VCC = 1.0V, but operation ceases below that level. For applications requiring valid reset signaling all the way to 0V, an external pullup resistor (e.g., 100kΩ) on the active-high RESET output is recommended - though this technique applies only to push-pull outputs like those in MAX6385XS19D3-T and not open-drain variants.
Is MAX6385XS19D3-T qualified for automotive applications?
No, MAX6385XS19D3-T is not automotive-qualified. It carries the "+T" suffix indicating lead-free/RoHS compliance but lacks the "/V" automotive qualification marker. For AEC-Q100 Grade 2 (-40°C to +105°C) or Grade 1 (-40°C to +125°C) applications, designers should select variants such as MAX6385XS19D3/V+T - which undergo additional stress testing and screening per automotive standards.
MAX6385XS19D3-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:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6385XS19D3-T FAQ
1.How can I place an order for MAX6385XS19D3-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6385XS19D3-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 MAX6385XS19D3-T reliable?
The price and inventory of MAX6385XS19D3-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6385XS19D3-T is usually 5 days.
3.What payment methods are accepted for MAX6385XS19D3-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6385XS19D3-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6385XS19D3-T?
MAX6385XS19D3-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6385XS19D3-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 MAX6385XS19D3-T?
For technical support, including MAX6385XS19D3-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6385XS19D3-T requirements.
6.How does Aetrix verify that MAX6385XS19D3-T is sourced from the original manufacturer or authorized distributors?
All MAX6385XS19D3-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 MAX6385XS19D3-T meets industry standards.
7.What is the process for return or replacement of MAX6385XS19D3-T?
All MAX6385XS19D3-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6385XS19D3-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 MAX6385XS19D3-T part is unused and in its original packaging.
Return procedure for MAX6385XS19D3-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6385XS19D3-T Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
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.
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…
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…
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…
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 …
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…
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…
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…
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…
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…
