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Analog Devices Inc./Maxim Integrated MAX6467US46D3-T
- Part No.:
- MAX6467US46D3-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6467US46D3-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:9,895
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Product details
Overview
MAX6467US46D3-T from Maxim Integrated is a microprocessor supervisory reset circuit in SOT143-4 package, monitoring +4.625V supply with ±1.5% threshold accuracy at +25°C, 150ms minimum reset timeout, active-low open-drain RESET output, and edge-triggered manual reset input. It ensures reliable power-on, brownout, and manual reset for automotive-grade embedded controllers.
For engineers reviewing the MAX6467US46D3-T datasheet, MAX6467US46D3-T pinout, MAX6467US46D3-T application, or MAX6467US46D3-T equivalent, this device delivers precision voltage supervision with glitch immunity, ultra-low 3µA supply current at 1.8V, and guaranteed RESET validity down to VCC = +1V - critical for battery-powered and automotive systems requiring robust reset behavior under transient conditions.
Technical Context
The MAX6467US46D3-T implements a precision bandgap-based voltage comparator with factory-trimmed threshold of 4.625V (typ), supporting operation from VCC = +1.2V to +5.5V across -40°C to +125°C. Its edge-triggered MR input uses internal timing logic to ignore switch bounce and enforce a fixed 150ms one-shot reset pulse on falling edge.
RESET assertion is dual-condition: triggered by VCC falling below threshold (with 35µs delay) or MR falling edge (with 200ns propagation delay); RESET remains low for 150–300ms after VCC recovery or MR event. The open-drain output requires external pullup and sinks up to 80µA while maintaining VOL ≤ 0.3V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.625V (typ), ±1.5% at +25°C - precisely monitors +5.0V rail with tight tolerance for stable µP initialization |
| Reset Timeout Period | 150ms (min) - meets minimum reset hold time requirements of most ARM Cortex-M and legacy 8-bit microcontrollers |
| Supply Current | 3µA at VCC = +1.8V - enables multi-year battery life in always-on supervisory applications |
| Operating Voltage Range | +1.2V to +5.5V - supports wide-input industrial and automotive power domains including post-LDO rails |
| Temperature Range | -40°C to +125°C - qualified for under-hood automotive and industrial control environments |
| RESET Output Type | Active-low open-drain - allows wired-OR configuration and level translation via external pullup |
| MR Input Debounce | 150ms rising-edge debounce - eliminates false resets from mechanical switch bounce without external RC |
Pinout & Package
Package: 4-pin SOT143 (U3+1 outline, 90-0183 land pattern), surface-mount, RoHS-compliant tape-and-reel.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Ground reference | Primary return path for internal comparator and reset logic; must be connected directly to system ground plane |
| 2 RESET | Active-low open-drain output | Drives low during reset events; requires external pullup resistor (typically 10kΩ–100kΩ) to host VDD for proper logic level |
| 3 MR | Edge-triggered manual reset input | Falling edge initiates fixed 150ms one-shot reset pulse; internally pulled up to VCC (1.5kΩ) - no external pullup needed |
| 4 VCC | Power and monitored supply input | Supplies device bias and serves as monitored rail; bypass with 0.1µF ceramic capacitor to GND for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Precision factory-set 4.625V threshold | Eliminates external resistor divider and calibration, reducing BOM count and layout area in +5V systems |
| Edge-triggered MR with 150ms one-shot | Ensures deterministic reset duration regardless of how long MR is held low - critical for test jigs and field service |
| Immunity to short VCC transients | Rejects glitches ≤100ns duration (at 100mV overdrive), preventing spurious resets in noisy automotive environments |
| RESET valid down to VCC = +1V | Maintains defined logic state during deep brownout, enabling safe shutdown sequencing before power collapse |
| Ultra-low 3µA supply current | Minimizes quiescent load on backup batteries or energy-harvesting supplies in always-on monitoring nodes |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC I/O Module |
|---|---|
|
Use Scenario: Monitors 5V microcontroller supply in engine management system exposed to load dump and cold-crank transients. IC Role / Device Role / Timing Role: Supervisory reset generator asserting active-low RESET to ARM-based MCU during brownout or manual diagnostic reset. Use Value: Factory-trimmed 4.625V threshold ensures accurate detection of 5V rail collapse; 150ms timeout satisfies ISO 16750-2 cold-crank reset hold requirement. |
Use Scenario: Provides fail-safe reset for programmable logic controller CPU module operating in factory automation cabinets. IC Role / Device Role / Timing Role: Voltage supervisor ensuring deterministic reset initiation and duration during AC line interruption or hot-swap events. Use Value: Open-drain RESET allows shared reset bus across multiple subsystems; -40°C to +125°C rating supports uncooled cabinet deployment. |
| Medical Infusion Pump Controller | DSL Modem Power Management |
|
Use Scenario: Guarantees safe restart of safety-critical microcontroller after power interruption or user-initiated recalibration. IC Role / Device Role / Timing Role: Edge-triggered manual reset interface for technician service mode, coupled with precise VCC supervision. Use Value: 150ms one-shot MR pulse prevents accidental double-reset from button hold; 3µA ICC extends battery backup runtime during AC loss. |
Use Scenario: Supervises 5V digital core supply in DSL modem subjected to frequent power cycling and ESD events. IC Role / Device Role / Timing Role: Reset generator with transient immunity, ensuring clean boot after power restoration without firmware corruption. Use Value: Immunity to ≤100ns VCC glitches avoids false resets during line surge suppression; SC70/SOT143 footprint minimizes PCB area in space-constrained modems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6384US46D3-T | Same 4.625V threshold, 140ms min timeout, push-pull RESET output | Lacks open-drain flexibility; requires no external pullup but cannot be wire-OR'd | Select when system needs active-drive high-state RESET and no shared-bus topology |
| TPS3808G33DBVR | 3.3V fixed threshold, 200ms min timeout, open-drain RESET, 1.6µA ICC | Not suitable for 5V rail monitoring; optimized for lower-voltage SoCs | Choose only if supervising 3.3V domain and ultra-low current (<2µA) is primary constraint |
Compared with MAX6467US46D3-T, MAX6384US46D3-T offers push-pull drive but sacrifices bus-sharing capability, while TPS3808G33DBVR provides lower ICC but cannot monitor 4.625V/5V rails - making MAX6467US46D3-T the only option meeting precision +5V supervision, open-drain flexibility, and automotive temperature range simultaneously.
Availability
MAX6467US46D3-T is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLC modules, medical infusion pump controllers, DSL modems, and GPS navigation systems requiring stable component supply across extended temperature and long product lifecycles.
Supply support for MAX6467US46D3-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 communications applications.
The MAX6467 series targets high-reliability microprocessor supervision in harsh environments, delivering factory-trimmed thresholds, edge-triggered manual reset, and extended temperature operation without external components.
FAQ
What is the exact reset threshold voltage of MAX6467US46D3-T and its tolerance over temperature?
The MAX6467US46D3-T has a nominal reset threshold of 4.625V at +25°C, with ±1.5% tolerance at room temperature. Over the full -40°C to +85°C range, tolerance widens to ±2.5%, and from +85°C to +125°C it is ±3%. This is specified in the Reset Threshold Table of the datasheet and confirmed by electrical characterization testing.
Does MAX6467US46D3-T require an external pullup resistor on the RESET pin?
Yes, MAX6467US46D3-T features an active-low open-drain RESET output and requires an external pullup resistor to a valid logic-high voltage (e.g., 3.3V or 5V). Typical values range from 10kΩ to 100kΩ. This is necessary because the internal circuitry does not drive HIGH - only pulls LOW - and the pullup defines the inactive state voltage level.
What is the minimum VCC voltage at which MAX6467US46D3-T guarantees valid RESET output behavior?
MAX6467US46D3-T guarantees valid RESET output down to VCC = +1V. Below that, the internal circuitry may not operate reliably. This specification ensures predictable reset assertion and release during deep brownout conditions common in automotive and battery-backed systems, and is explicitly tested and guaranteed per the Absolute Maximum Ratings table.
How does the manual reset (MR) input of MAX6467US46D3-T handle switch bounce?
The MR input of MAX6467US46D3-T incorporates a 150ms rising-edge debounce period (tDEB). After MR transitions from low to high, subsequent falling edges within that window are ignored - preventing multiple reset pulses from mechanical switch bounce. This is implemented entirely internally; no external RC network is required, as confirmed in the Applications Information section.
Is MAX6467US46D3-T pin-compatible with other Maxim supervisory devices?
Yes, MAX6467US46D3-T is pin-compatible with MAX811, MAX6315, MAX6384, and MAX6386 in the same SOT143-4 package. Pin functions (VCC, GND, MR, RESET) match identically, enabling drop-in replacement where the 4.625V threshold and 150ms timeout meet system requirements - verified in the Features section and Pin Description table.
MAX6467US46D3-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- TO-253-4, TO-253AA
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.625V
- 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-23-4
MAX6467US46D3-T FAQ
1.How can I place an order for MAX6467US46D3-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6467US46D3-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 MAX6467US46D3-T reliable?
The price and inventory of MAX6467US46D3-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6467US46D3-T is usually 5 days.
3.What payment methods are accepted for MAX6467US46D3-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6467US46D3-T transactions.
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4.How is shipping managed for MAX6467US46D3-T?
MAX6467US46D3-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6467US46D3-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 MAX6467US46D3-T?
For technical support, including MAX6467US46D3-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6467US46D3-T requirements.
6.How does Aetrix verify that MAX6467US46D3-T is sourced from the original manufacturer or authorized distributors?
All MAX6467US46D3-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 MAX6467US46D3-T meets industry standards.
7.What is the process for return or replacement of MAX6467US46D3-T?
All MAX6467US46D3-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6467US46D3-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 MAX6467US46D3-T part is unused and in its original packaging.
Return procedure for MAX6467US46D3-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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