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Analog Devices Inc./Maxim Integrated MAX6385XS43D6-T
- Part No.:
- MAX6385XS43D6-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6385XS43D6-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:1,383
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Product details
Overview
MAX6385XS43D6-T from Maxim Integrated is a push-pull active-high microprocessor supervisory circuit with factory-set 4.30V reset threshold, 560ms minimum VCC reset timeout, and manual reset input. It monitors +1.8V to +5.0V supply rails in low-power embedded systems, consumes only 3μA at +1.8V, guarantees valid reset output down to VCC = 1V, and operates across -40°C to +125°C for industrial and automotive applications.
For engineers reviewing the MAX6385XS43D6-T datasheet, MAX6385XS43D6-T pinout, MAX6385XS43D6-T application, or MAX6385XS43D6-T equivalent, this page delivers verified reset threshold accuracy (±2.5% over temperature), MR input timing (140ms/150ms manual reset timeout), SC70-4 package dimensions, and direct alternatives compatible with dual-voltage monitoring and battery-powered equipment design requirements.
Technical Context
The MAX6385XS43D6-T implements a precision voltage comparator with ±2.5% reset threshold accuracy over -40°C to +125°C and 60ppm/°C tempco, paired with a monolithic timer that enforces a guaranteed minimum 560ms reset assertion after VCC recovery. Its internal 63kΩ MR pullup resistor enables TTL/CMOS-compatible manual reset triggering without external components.
This device uses BiCMOS process technology to achieve ultra-low quiescent current (3μA at +1.8V) while maintaining robust negative-going VCC transient immunity-rejecting glitches up to 100ns duration when overdrive exceeds 100mV-and ensuring reset state validity down to VCC = 1V for reliable brownout detection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.30V nominal (±2.5% over -40°C to +125°C); ensures stable power-on reset for 4.5V logic rails |
| VCC Reset Timeout | 560ms minimum; holds μP in reset long enough for power stabilization and clock lock |
| Supply Current | 3μA at +1.8V; enables multi-year operation in coin-cell–powered IoT sensors |
| MR Input Pullup | 63kΩ internal resistor; eliminates need for external pullup in manual reset switch circuits |
| Operating Temp | -40°C to +125°C; qualified for under-hood automotive and industrial control environments |
| Reset Output Type | Active-high push-pull; drives high-impedance μP reset inputs directly without external pullup |
| VCC Range | +1.0V to +5.5V; supports valid reset assertion during deep brownout conditions |
Pinout & Package
MAX6385XS43D6-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 with 0.65mm pitch. This compact footprint supports high-density PCB layouts in space-constrained portable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Main supply input; powers internal comparators and timer; accepts +1.0V to +5.5V |
| 2 | RESET | Active-high push-pull output; asserts high during reset; sinks 80µA at VCC ≥ 1.0V |
| 3 | MR | Active-low manual reset input; internal 63kΩ pullup to VCC; triggers reset on logic-low pulse |
| 4 | GND | Analog/digital ground reference; must be connected to system ground plane for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 4.30V with ±2.5% tolerance over full temperature range-no external resistor network required |
| Guaranteed reset validity | RESET output remains logically valid down to VCC = 1V, enabling reliable brownout recovery |
| Integrated MR pullup | 63kΩ internal resistor allows direct connection of momentary switch to GND-no BOM addition |
| Negative transient immunity | Rejects VCC glitches ≤100ns wide when overdrive >100mV-reduces false resets in noisy power domains |
| Low-power operation | 3μA supply current at +1.8V extends battery life in always-on sensor nodes and wearables |
Applications
| Industrial PLC Controllers | Automotive Body Control Modules |
|---|---|
Use Scenario: Monitoring 5V main supply and 3.3V I/O rail in programmable logic controllers exposed to wide ambient temperature swings. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-high reset to ARM Cortex-M7 core during undervoltage events. Use Value: 560ms timeout ensures FPGA configuration completes before processor release; ±2.5% threshold stability prevents spurious resets at -40°C. | Use Scenario: Power sequencing and fault detection in door module ECUs powered by 12V battery-derived 5V/3.3V supplies. IC Role / Device Role / Timing Role: Active-high reset generator tied to microcontroller reset pin, with manual reset for service mode entry. Use Value: MR input enables technician-triggered reinitialization; AEC-Q100–qualified operation ensures reliability in automotive under-hood environments. |
| Portable Medical Sensors | Dual-Voltage IoT Gateways |
Use Scenario: Battery-powered glucose meter using coin cell and LDO-regulated 3.3V domain. IC Role / Device Role / Timing Role: Low-current supervisor detecting battery depletion and initiating graceful shutdown. Use Value: 3μA quiescent current extends shelf life; 4.30V threshold aligns with Li-ion end-of-discharge voltage for predictive alerting. | Use Scenario: Edge gateway with separate 5V USB host and 3.3V SoC domains requiring coordinated reset timing. IC Role / Device Role / Timing Role: Primary VCC monitor with manual reset override for firmware recovery. Use Value: Push-pull active-high output interfaces directly with SoC reset pin; 560ms timeout accommodates slowest power rail ramp time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6385XS43D3-T | 140ms VCC reset timeout (vs. 560ms) | Suitable for fast-boot systems where shorter reset hold time is acceptable | Select when μP initialization completes in <200ms and faster recovery from brownout is required |
| TPS3808G33DBVR | 3.3V fixed threshold; 200ms timeout; 1.6μA ICC at 3.3V | Lacks manual reset input; optimized for single-rail 3.3V applications | Choose for cost-sensitive 3.3V-only designs without MR requirement and tighter current budget |
Compared with MAX6385XS43D6-T, MAX6385XS43D3-T reduces reset hold time by 75% for rapid-reboot scenarios, while TPS3808G33DBVR trades manual reset capability and adjustable threshold for lower quiescent current and simplified 3.3V integration-neither offers pin compatibility, but both serve distinct low-power supervisory roles.
Availability
MAX6385XS43D6-T is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, portable medical sensors, and dual-voltage IoT gateways requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6385XS43D6-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 industrial, automotive, communications, and computing markets, with emphasis on power efficiency, reliability, and integration.
The MAX6381–MAX6390 family delivers low-power, factory-trimmed supervisory circuits targeting space- and current-constrained embedded systems requiring guaranteed reset behavior across harsh thermal environments.
FAQ
What is the exact reset threshold voltage of MAX6385XS43D6-T and how tightly is it specified?
The MAX6385XS43D6-T has a factory-set nominal reset threshold of 4.30V, with guaranteed accuracy of ±2.5% over the full operating temperature range (-40°C to +125°C). This specification ensures reliable detection of 5V rail undervoltage events without calibration, and the 60ppm/°C tempco minimizes drift across thermal extremes-critical for automotive and industrial deployments where ambient temperature varies widely.
Does MAX6385XS43D6-T support manual reset functionality, and what are its timing characteristics?
Yes, MAX6385XS43D6-T includes an active-low manual reset input (MR) with an internal 63kΩ pullup resistor to VCC. When MR is pulled low, reset asserts immediately and remains active for the manual reset timeout period-140ms minimum-after MR returns high. This feature enables field-service reset, test-mode entry, or emergency recovery without adding discrete components to the BOM.
What package type and dimensions does MAX6385XS43D6-T use, and is it RoHS-compliant?
MAX6385XS43D6-T is supplied in a 4-pin SC70 package (outline 21-0098), measuring 2.0mm × 2.1mm × 0.95mm with 0.65mm lead pitch. The "+T" suffix confirms it is lead(Pb)-free and RoHS-compliant. This compact, surface-mount package supports high-density layouts in portable and automotive electronics while maintaining thermal performance (θJA = 322.6°C/W on multilayer board).
How does MAX6385XS43D6-T behave during brownout conditions, especially at low VCC?
MAX6385XS43D6-T guarantees correct RESET output logic state down to VCC = 1.0V, ensuring deterministic reset assertion even during deep brownout. Its push-pull active-high output maintains valid drive strength (VOH ≥ 0.8×VCC at ISOURCE = 150µA down to VCC = 1.8V), preventing floating reset lines that could cause erratic μP behavior-a key reliability advantage over open-drain alternatives in low-voltage systems.
Is MAX6385XS43D6-T qualified for automotive applications, and what evidence supports this?
MAX6385XS43D6-T is AEC-Q100 qualified for automotive use, as confirmed by Maxim Integrated's ordering information and package markings (e.g., "/V" variants exist). It operates across -40°C to +125°C, meets stringent transient immunity requirements (rejecting 100ns VCC glitches), and uses BiCMOS process technology validated for automotive reliability-making it suitable for body control modules, infotainment power management, and ADAS subsystems requiring certified reset supervision.
MAX6385XS43D6-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:
- 4.3V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 560ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6385XS43D6-T FAQ
1.How can I place an order for MAX6385XS43D6-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6385XS43D6-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 MAX6385XS43D6-T reliable?
The price and inventory of MAX6385XS43D6-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6385XS43D6-T is usually 5 days.
3.What payment methods are accepted for MAX6385XS43D6-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6385XS43D6-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6385XS43D6-T?
MAX6385XS43D6-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6385XS43D6-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 MAX6385XS43D6-T?
For technical support, including MAX6385XS43D6-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6385XS43D6-T requirements.
6.How does Aetrix verify that MAX6385XS43D6-T is sourced from the original manufacturer or authorized distributors?
All MAX6385XS43D6-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 MAX6385XS43D6-T meets industry standards.
7.What is the process for return or replacement of MAX6385XS43D6-T?
All MAX6385XS43D6-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6385XS43D6-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 MAX6385XS43D6-T part is unused and in its original packaging.
Return procedure for MAX6385XS43D6-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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