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Analog Devices Inc./Maxim Integrated MAX6467US33D3+T
- Part No.:
- MAX6467US33D3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6467US33D3+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:3,259
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Product details
Overview
MAX6467US33D3+T from Analog Devices is a microprocessor supervisory reset circuit in SOT143-4 package, monitoring +3.3V supply with factory-trimmed 3.300V threshold (±1.5% at +25°C), 150ms minimum reset timeout, active-low open-drain RESET output, and edge-triggered manual reset input. It ensures reliable µP reset during power-up, brownout, and transient events in automotive and industrial embedded systems.
For engineers reviewing the MAX6467US33D3+T datasheet, MAX6467US33D3+T pinout, MAX6467US33D3+T application, or MAX6467US33D3+T equivalent, this page delivers verified electrical parameters, thermal operating range (-40°C to +125°C), MR debounce timing (150ms min), supply current (3µA at +1.8V), and VCC-to-RESET delay (35µs), enabling accurate BOM validation and system-level reset timing analysis.
Technical Context
The MAX6467US33D3+T implements a precision bandgap-based voltage comparator with hysteresis to detect VCC drops below its 3.300V threshold, asserting an active-low open-drain RESET signal. Its internal one-shot timer initiates fixed 150ms reset timeout on either VCC fall or MR falling edge, independent of MR pulse width.
MR input includes internal 1.5kΩ pullup and 150ms rising-edge debounce logic to reject switch bounce; RESET remains valid down to VCC = +1V and supports external pullup for level-shifting. The device operates across full automotive temperature range without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.300V ±1.5% at +25°C; monitors +3.3V supply with guaranteed accuracy over -40°C to +125°C |
| Reset Timeout Period | 150ms (min) / 300ms (max); ensures µP reset duration meets boot-loader requirements |
| Supply Current | 3µA at VCC = +1.8V; enables ultra-low-power operation in battery-backed systems |
| VCC to RESET Delay | 35µs typical; provides fast response to supply droop for real-time fault containment |
| MR Debounce Period | 150ms (min); eliminates false resets from mechanical switch bounce without external RC |
| Operating Voltage Range | +1.0V to +5.5V; supports valid RESET assertion even as VCC decays to 1V |
| Output Type | Active-low open-drain; requires external pullup for logic-level compatibility and bus sharing |
Pinout & Package
MAX6467US33D3+T is housed in a 4-pin SOT143-4 surface-mount package (2.9mm × 1.3mm × 1.0mm), optimized for space-constrained automotive and portable applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - GND | Ground reference | Return path for all internal circuitry; must be connected directly to system ground plane |
| 2 - RESET | Open-drain reset output | Active-low signal requiring external pullup; sinks 80µA at VOL ≤ 0.3V for µP reset assertion |
| 3 - MR | Edge-triggered manual reset input | Falling-edge sensitive; internal 1.5kΩ pullup allows direct pushbutton connection to GND |
| 4 - VCC | Power and monitored supply | Provides operating power and serves as monitored rail; bypass with 0.1µF capacitor to GND |
Key Features
| Feature | Design Value |
|---|---|
| Precision factory-set 3.300V threshold | Eliminates external resistor divider; guarantees ±1.5% accuracy at +25°C and ±2.5% over -40°C to +85°C |
| Edge-triggered MR with one-shot timing | Asserts fixed 150ms RESET pulse on first MR falling edge, ignoring subsequent bounces within 150ms window |
| Immunity to short VCC transients | Rejects glitches ≤100ns duration; prevents spurious resets during EMI or switching noise events |
| Valid RESET down to VCC = +1V | Ensures deterministic reset behavior during deep brownout conditions before full power collapse |
| AEC-Q100 qualified | Qualified for automotive applications per AEC-Q100 Rev H stress testing standards |
Applications
| Automotive Infotainment | Industrial PLC Controller |
|---|---|
Use Scenario: Reset management for head-unit MCU during cold-crank battery dip or ignition cycling. IC Role / Device Role / Timing Role: Supervisory reset circuit asserting active-low RESET to ARM Cortex-M7 core upon VCC drop below 3.300V. Use Value: Guarantees 150ms minimum reset hold time to prevent partial initialization during <100ms battery sag events. | Use Scenario: Reliable restart of programmable logic controller after field wiring fault-induced supply disturbance. IC Role / Device Role / Timing Role: Edge-triggered manual reset supervisor interfacing with front-panel reset button and isolated I/O backplane. Use Value: Internal 150ms MR debounce eliminates need for external RC filter, reducing BOM count and PCB area. |
| Medical Patient Monitor | DSL Modem Power Management |
Use Scenario: Ensuring deterministic boot sequence for safety-critical ARM-based vital-sign processor after AC/DC adapter reconnection. IC Role / Device Role / Timing Role: Single-supply voltage monitor for +3.3V rail powering ADC, display driver, and communication interface. Use Value: 3µA supply current extends backup battery life during standby; RESET validity to +1V prevents premature release during slow discharge. | Use Scenario: Coordinating reset sequencing between DSL PHY and host SoC during line surge recovery. IC Role / Device Role / Timing Role: Open-drain RESET output shared across multiple voltage domains via external pullup to +3.3V or +1.8V. Use Value: Open-drain architecture enables safe wired-OR reset bus implementation without contention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6315US33D3+T | Same SOT143-4 package, 3.3V threshold, 140ms min timeout; lacks MR debounce and glitch immunity specs | Lower-cost option where switch bounce filtering is handled externally | Select when MR debounce is implemented in firmware or external hardware |
| TLV803EB33DBZR | 3.3V threshold, 200ms min timeout, push-pull output; no MR input or edge-triggering | Suitable only for VCC-only monitoring; no manual reset capability | Select when system requires only power-fail detection without operator-initiated reset |
Compared with MAX6467US33D3+T, MAX6315US33D3+T offers reduced feature set but lower unit cost, while TLV803EB33DBZR provides push-pull simplicity at the expense of missing MR functionality-making MAX6467US33D3+T the only choice for automotive-grade, edge-triggered, debounced manual reset in compact SOT143 form factor.
Availability
MAX6467US33D3+T is available at Aetrix Electronics and suitable for automotive infotainment, industrial PLC controllers, and medical patient monitors requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6467US33D3+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 series belongs to Analog Devices' precision supervisory IC product line, designed specifically for automotive-grade power-monitoring applications demanding AEC-Q100 qualification, low quiescent current, and robust transient immunity.
FAQ
What is the exact reset threshold voltage and tolerance for MAX6467US33D3+T?
The MAX6467US33D3+T has a factory-trimmed reset threshold of 3.300V with ±1.5% tolerance at +25°C, ±2.5% over -40°C to +85°C, and ±3% over +85°C to +125°C. This precise voltage matches standard +3.3V supply rails and ensures reliable brownout detection without external calibration components. The threshold is laser-trimmed during manufacturing and documented in the Reset Threshold Table of the official datasheet.
Does MAX6467US33D3+T support manual reset functionality, and how does it work?
Yes, MAX6467US33D3+T features an edge-triggered manual reset (MR) input that responds to the first falling edge only. Upon MR assertion, it generates a fixed 150ms one-shot RESET pulse, ignoring subsequent MR transitions during that period and a 150ms rising-edge debounce window. This eliminates switch bounce issues without external circuitry. The MR pin includes a built-in 1.5kΩ pullup resistor to VCC, allowing direct connection of a momentary switch to GND.
What is the output configuration of MAX6467US33D3+T, and what external components are required?
MAX6467US33D3+T uses an active-low open-drain RESET output, requiring an external pullup resistor to the target logic rail (e.g., +3.3V or +1.8V). No other external components are needed-the device integrates precision threshold detection, timing, debounce, and pullup on MR. The open-drain structure enables wired-OR reset bus configurations and voltage-level translation across domains.
Is MAX6467US33D3+T qualified for automotive applications?
Yes, MAX6467US33D3+T is AEC-Q100 qualified for automotive use and specified over the full -40°C to +125°C temperature range. Its ordering suffix "/V+T" confirms automotive qualification and lead-free RoHS compliance. The device meets stress test requirements for humidity, thermal cycling, and ESD relevant to under-hood and dashboard-mounted electronics.
What is the minimum supply voltage at which MAX6467US33D3+T guarantees valid RESET operation?
MAX6467US33D3+T guarantees valid RESET output behavior down to VCC = +1.0V. Below this voltage, internal circuitry may not function reliably. This specification ensures deterministic reset assertion during deep brownout conditions common in automotive cold-crank scenarios, where battery voltage can dip below 2.0V but remain above 1.0V for sufficient time to complete reset hold.
MAX6467US33D3+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:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3.3V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 150ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-143-4
MAX6467US33D3+T FAQ
1.How can I place an order for MAX6467US33D3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6467US33D3+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 MAX6467US33D3+T reliable?
The price and inventory of MAX6467US33D3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6467US33D3+T is usually 5 days.
3.What payment methods are accepted for MAX6467US33D3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6467US33D3+T transactions.
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4.How is shipping managed for MAX6467US33D3+T?
MAX6467US33D3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6467US33D3+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 MAX6467US33D3+T?
For technical support, including MAX6467US33D3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6467US33D3+T requirements.
6.How does Aetrix verify that MAX6467US33D3+T is sourced from the original manufacturer or authorized distributors?
All MAX6467US33D3+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 MAX6467US33D3+T meets industry standards.
7.What is the process for return or replacement of MAX6467US33D3+T?
All MAX6467US33D3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6467US33D3+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 MAX6467US33D3+T part is unused and in its original packaging.
Return procedure for MAX6467US33D3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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