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Analog Devices Inc./Maxim Integrated MAX6467US31D7+T
- Part No.:
- MAX6467US31D7+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6467US31D7+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:3,352
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Product details
Overview
MAX6467US31D7+T from Analog Devices is a microprocessor supervisory reset circuit in SOT143-4 package, monitoring +3.0V supply with factory-trimmed 3.075V threshold (±3% over -40°C to +125°C), 1200ms min VCC reset timeout, edge-triggered manual reset input, and active-low open-drain RESET output. It ensures reliable µP reset during brownout, power-up, and manual intervention in automotive and industrial embedded systems.
For engineers reviewing the MAX6467US31D7+T datasheet, MAX6467US31D7+T pinout, MAX6467US31D7+T application, or MAX6467US31D7+T equivalent, this page delivers verified electrical parameters, automotive-grade temperature operation (-40°C to +125°C), SC70/SOT143 package compatibility, AEC-Q100 qualification status, and precise reset timing behavior under transient conditions.
Technical Context
The MAX6467US31D7+T implements a precision bandgap-based voltage reference and comparator to detect VCC drops below its 3.075V threshold, with ±3% tolerance over full automotive temperature range. Its internal one-shot timer generates fixed 1200ms (min) reset pulse after VCC recovery and identical 150ms (min) pulse after MR falling edge.
It features built-in MR debounce logic ignoring subsequent MR edges within 150ms after MR rises, eliminating switch bounce artifacts. The open-drain RESET output requires external pullup and remains valid down to VCC = +1V, supporting low-voltage brownout detection without false releases.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 3.075V (typ), ±3% over -40°C to +125°C - ensures accurate brownout detection for +3.0V systems |
| VCC Reset Timeout | 1200ms (min) - guarantees sufficient µP reset hold time for slow-starting processors |
| MR Timeout Period | 150ms (min) - provides consistent manual reset pulse width independent of MR press duration |
| Supply Current | 3µA at VCC = +1.8V - enables ultra-low-power operation in battery-backed systems |
| Operating Voltage Range | +1.0V to +5.5V - supports wide input range while monitoring +3.0V rail |
| RESET Valid Down To | VCC = +1V - maintains functional reset assertion during deep brownout conditions |
| MR Input Pullup | 1.5kΩ internal - eliminates need for external pullup when MR is unused |
Pinout & Package
MAX6467US31D7+T uses the 4-pin SOT143-4 package (package code U4+1, outline 21-0052), measuring 2.9mm × 1.6mm × 1.1mm with gull-wing leads. Pin 1 = GND, Pin 2 = RESET (open-drain), Pin 3 = MR (edge-triggered input), Pin 4 = VCC (monitored supply input).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for all internal circuitry and reset comparator |
| 2 | RESET | Active-low open-drain output requiring external pullup; asserts low on VCC drop or MR edge |
| 3 | MR | Edge-triggered manual reset input; falling edge initiates fixed 150ms one-shot reset pulse |
| 4 | VCC | Power supply input and monitored voltage rail; bypass with 0.1µF capacitor to GND |
Key Features
| Feature | Design Value |
|---|---|
| Factory-set 3.075V threshold | Eliminates external resistor divider and calibration, reducing BOM count and layout area |
| Edge-triggered MR with debounce | Rejects mechanical switch bounce and ensures single, deterministic reset pulse per button press |
| 1200ms VCC reset timeout | Meets extended reset hold requirements of automotive microcontrollers and safety-critical firmware |
| Open-drain RESET output | Enables wired-OR configuration with other reset sources and flexible voltage-level translation |
| AEC-Q100 qualified | Validated for automotive applications including engine control, ADAS sensors, and infotainment modules |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC I/O Module |
|---|---|
Use Scenario: Monitors 3.0V auxiliary supply powering CAN transceiver and sensor interface ICs in harsh under-hood environments. IC Role / Device Role / Timing Role: Supervisory reset generator asserting active-low RESET to ECU µP and peripheral ICs during voltage sags caused by load dump or cold cranking. Use Value: Guarantees 1200ms minimum reset hold time and operates reliably from -40°C to +125°C, meeting ISO 16750-2 requirements. | Use Scenario: Provides fail-safe reset to ARM Cortex-M7 controller in modular PLC backplane where 3.0V logic rails experience intermittent noise-induced dips. IC Role / Device Role / Timing Role: Voltage monitor and edge-triggered manual reset initiator ensuring deterministic µP restart after field service or watchdog timeout. Use Value: Internal 1.5kΩ MR pullup removes external component; 150ms MR timeout prevents spurious resets from contact chatter. |
| Medical Infusion Pump Controller | DSL Modem Power Management |
Use Scenario: Supervises 3.0V microcontroller supply in battery-operated infusion pump where undervoltage must trigger immediate motor shutdown and alarm. IC Role / Device Role / Timing Role: Brownout detector with guaranteed RESET assertion down to VCC = +1V, enabling safe state capture before power collapse. Use Value: 3µA quiescent current extends battery life; ±3% threshold accuracy ensures repeatable trip point across temperature and unit variance. | Use Scenario: Resets DSL line card processor during AC power interruption or surge events affecting 3.0V digital core supply. IC Role / Device Role / Timing Role: Immune to short-duration transients (<100ns glitch rejection), preventing false resets during line noise bursts. Use Value: 1200ms timeout accommodates slow power-supply recovery in multi-rail AC/DC converters feeding DSL PHY and MAC layers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6386US31D3+T | Same SOT143-4 package, 3.075V threshold, but 150ms reset timeout (not 1200ms); push-pull output option only | Designed for faster-reset µPs; lacks long timeout needed for automotive boot sequences | Select only if system requires shorter reset hold time and push-pull drive capability |
| TLV809E30DBZR | 3.0V threshold, SOT23-3 package, 140ms reset timeout, no manual reset input, lower temp range (-40°C to +125°C not guaranteed) | Lacks MR functionality and automotive qualification; suitable for cost-sensitive consumer designs only | Choose only for non-automotive, MR-free applications where footprint and cost outweigh reliability requirements |
Compared with MAX6467US31D7+T, MAX6386US31D3+T offers faster reset release but no 1200ms option or open-drain flexibility, while TLV809E30DBZR omits manual reset and automotive validation-making MAX6467US31D7+T uniquely suited for AEC-Q100-compliant systems needing long, deterministic reset hold and field-serviceable restart capability.
Availability
MAX6467US31D7+T is available at Aetrix Electronics and suitable for automotive engine control units, industrial programmable logic controllers, medical infusion pumps, DSL modems, and GPS navigation systems requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MAX6467US31D7+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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The MAX6467/MAX6468 product line delivers automotive-grade microprocessor supervisory circuits with precision voltage thresholds, edge-triggered manual reset, and extended temperature operation-designed specifically for safety-critical embedded systems demanding robust power-monitoring and deterministic reset behavior.
FAQ
What is the exact reset threshold voltage of MAX6467US31D7+T and how does it vary with temperature?
The MAX6467US31D7+T has a factory-trimmed nominal reset threshold of 3.075V, with ±2.5% tolerance over -40°C to +85°C and ±3% over +85°C to +125°C. This is confirmed in the Reset Threshold table (suffix "31") and Electrical Characteristics section. The device maintains threshold stability across temperature via precision bandgap reference, with typical normalized variation less than ±0.5% from +25°C baseline per the Typical Operating Characteristics graph (toc05).
Does MAX6467US31D7+T support manual reset functionality, and how is it implemented?
Yes, MAX6467US31D7+T supports edge-triggered manual reset via the MR pin. A falling edge on MR initiates a fixed 150ms (min) one-shot RESET pulse, independent of MR press duration. Internal 1.5kΩ pullup allows MR to float if unused, and 150ms rising-edge debounce prevents false triggers from switch bounce-details are specified in the MR Timing section and Figure 1 timing diagram.
What is the RESET output type of MAX6467US31D7+T, and what design considerations apply?
MAX6467US31D7+T features an active-low open-drain RESET output, requiring an external pullup resistor to the host system's logic rail. This enables wired-OR connection with other reset sources and level-shifting flexibility. Unlike push-pull variants (e.g., MAX6468), it cannot actively drive high-so pullup value must be selected to meet rise-time and bus-loading requirements per application.
Is MAX6467US31D7+T qualified for automotive applications, and what standards does it meet?
Yes, MAX6467US31D7+T is AEC-Q100 qualified for automotive use, as explicitly stated in the Features and Ordering Information sections. It is rated for -40°C to +125°C operation and packaged in lead(Pb)-free RoHS-compliant format (+T suffix). The "/V" designation in related part numbers confirms automotive qualification, and the device meets stress-test requirements per AEC-Q100 Rev H.
What are the key timing parameters of MAX6467US31D7+T related to reset assertion and release?
MAX6467US31D7+T asserts RESET low within 35µs of VCC crossing the threshold (tRD), holds RESET low for ≥1200ms after VCC recovers (tRP), and pulses RESET low for ≥150ms after MR falling edge (tMRP). MR rising debounce (tDEB) is also 150ms (min), ensuring clean manual reset triggering. All values are specified in the Electrical Characteristics table under TA = -40°C to +125°C conditions.
MAX6467US31D7+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- TO-253-4, TO-253AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3.075V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 1.2s Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-143-4
MAX6467US31D7+T FAQ
1.How can I place an order for MAX6467US31D7+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6467US31D7+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 MAX6467US31D7+T reliable?
The price and inventory of MAX6467US31D7+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6467US31D7+T is usually 5 days.
3.What payment methods are accepted for MAX6467US31D7+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6467US31D7+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6467US31D7+T?
MAX6467US31D7+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6467US31D7+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 MAX6467US31D7+T?
For technical support, including MAX6467US31D7+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6467US31D7+T requirements.
6.How does Aetrix verify that MAX6467US31D7+T is sourced from the original manufacturer or authorized distributors?
All MAX6467US31D7+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 MAX6467US31D7+T meets industry standards.
7.What is the process for return or replacement of MAX6467US31D7+T?
All MAX6467US31D7+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6467US31D7+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 MAX6467US31D7+T part is unused and in its original packaging.
Return procedure for MAX6467US31D7+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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