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Analog Devices Inc./Maxim Integrated MAX6467US46D3+
- Part No.:
- MAX6467US46D3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6467US46D3+.pdf
- Description:
- MAX6467 MICROPROCESSOR SUPERVISO
- Quantity:
- Payment:
- Shipping:
Inventory:5,033
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Product details
Overview
MAX6467US46D3+ from Maxim Integrated is a microprocessor supervisory reset circuit in SOT143-4 package, monitoring +4.625V supply with ±1.5% threshold accuracy over -40°C to +125°C, asserting active-low open-drain RESET for 150ms (min) on VCC brownout or edge-triggered manual reset, used in automotive power management and embedded control systems.
For engineers reviewing the MAX6467US46D3+ datasheet, MAX6467US46D3+ pinout, MAX6467US46D3+ application, or MAX6467US46D3+ equivalent, key selection criteria include factory-trimmed 4.625V reset threshold, 150ms minimum reset timeout, open-drain output requiring external pullup, immunity to 100ns MR glitches, and operation down to VCC = +1V.
Technical Context
The MAX6467US46D3+ implements a precision bandgap-based voltage monitor with factory-trimmed 4.625V threshold (±1.5% at +25°C, ±2.5% over -40°C to +85°C), coupled to an edge-triggered one-shot manual reset circuit that ignores MR bounce within 150ms debounce window after MR rising edge.
Its open-drain RESET output sinks up to 1.2mA at VCC ≥ +2.5V while maintaining VOL ≤ 0.3V, remains valid down to VCC = +1V, and exhibits 35µs typical VCC-to-RESET delay with immunity to transients ≤100ns when overdrive exceeds 50mV.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.625V (typ), ±1.5% tolerance at +25°C - precisely monitors +5.0V rails with tight margin for automotive-grade stability |
| Reset Timeout Period | 150ms (min) - ensures sufficient hold time for µP initialization across diverse processor platforms |
| Supply Current | 3µA at VCC = +1.8V - enables ultra-low-power operation in battery-backed or always-on systems |
| Operating Voltage Range | +1.2V to +5.5V - supports wide input range while guaranteeing RESET validity down to +1V |
| MR Glitch Rejection | 100ns - rejects contact bounce and EMI-induced noise on manual reset line without external filtering |
| Output Type | Active-low open-drain - requires external pullup but allows wired-OR configuration with other reset sources |
| Temperature Range | -40°C to +125°C - qualified for under-hood automotive and industrial high-temperature environments |
Pinout & Package
MAX6467US46D3+ uses the 4-pin SOT143-4 surface-mount package (3.0mm × 1.5mm × 1.0mm), optimized for space-constrained automotive and portable applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Ground reference | Return path for internal circuitry and RESET sink current; must be low-impedance connection to system ground plane |
| 2 RESET | Active-low open-drain output | Asserts low during VCC brownout or MR edge trigger; requires external pullup resistor (typically 10kΩ–100kΩ) to host VCC rail |
| 3 MR | Edge-triggered manual reset input | Falling edge initiates one-shot 150ms RESET pulse; internally pulled up to VCC via 1.5kΩ resistor; accepts TTL/CMOS logic levels |
| 4 VCC | Power supply and monitored voltage | Provides operating power and serves as monitored rail; bypass with 0.1µF ceramic capacitor to GND for transient 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 system monitoring |
| Edge-triggered MR with 150ms debounce | Ensures single, clean reset assertion per button press even with mechanical switch bounce, removing need for RC filters |
| 150ms minimum reset timeout | Guarantees µP reset hold time meets ARM Cortex-M, PIC, and STM32 boot requirements without timing margin risk |
| 3µA supply current at 1.8V | Enables integration into always-on subsystems (e.g., CAN wake-up controllers) without measurable battery drain impact |
| VCC = +1V operational floor | Maintains deterministic RESET behavior during deep brownout, supporting fail-safe shutdown sequencing in automotive ECUs |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC I/O Module |
|---|---|
Use Scenario: Monitors 5V microcontroller supply during cold cranking when battery voltage dips to 6–9V, causing regulator output sag. IC Role / Device Role / Timing Role: Supervisory reset circuit asserting active-low RESET to prevent corrupted firmware execution during voltage instability. Use Value: Factory-trimmed 4.625V threshold ensures reliable detection of +5V rail collapse before µP enters undefined state, with 150ms timeout aligning with ISO 16750-2 pulse 4a recovery timing. |
Use Scenario: Provides power-on and brownout reset for ARM-based I/O controller in DIN-rail mounted programmable logic controller. IC Role / Device Role / Timing Role: Voltage supervisor generating synchronized reset signal to multiple peripherals upon 5V supply deviation. Use Value: Open-drain output enables wired-OR with watchdog reset signals; -40°C to +125°C rating supports operation inside sealed enclosures with no forced air cooling. |
| Medical Infusion Pump Controller | DSL Modem Power Management |
Use Scenario: Ensures safe restart of safety-critical MCU after mains interruption or internal DC-DC converter fault in Class II medical device. IC Role / Device Role / Timing Role: Fault-tolerant reset generator with glitch-immune MR input for technician-initiated recalibration sequence. Use Value: 100ns MR glitch rejection prevents spurious resets from ESD events; 3µA quiescent current extends backup battery life during standby mode. |
Use Scenario: Manages reset sequencing for dual-core MIPS processor and ADSL PHY during AC power cycling and line surge events. IC Role / Device Role / Timing Role: Primary supervisor for +5V analog front-end and +3.3V digital core supplies, coordinating controlled boot order. Use Value: Immunity to short VCC transients (<100ns) avoids false resets during DSL line noise bursts; SC70/SOT143 footprint minimizes PCB area in dense modem modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX811SEUS46D3+ | Same 4.625V threshold and 150ms timeout, but higher 10µA supply current and only rated to +85°C | Lacks automotive temperature qualification; unsuitable for under-hood or industrial high-temp deployments | Select MAX811SEUS46D3+ only for commercial-grade cost-sensitive designs where extended temperature range is not required |
| TLV803EB46DBZR | 4.63V threshold (±0.5%), 200ms timeout, push-pull output, 0.5µA supply current, but no MR debounce circuitry | Requires external RC filter on MR pin to suppress switch bounce; lacks integrated 150ms MR debounce window | Choose TLV803EB46DBZR when lowest possible quiescent current is critical and manual reset debouncing can be implemented externally |
Compared with MAX811SEUS46D3+, MAX6467US46D3+ delivers automotive-grade reliability and lower power; versus TLV803EB46DBZR, it trades minimal current increase for integrated MR debounce and guaranteed 125°C operation-critical for uncooled industrial control units.
Availability
MAX6467US46D3+ is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLC modules, medical infusion pump controllers, and DSL modem power management requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6467US46D3+ 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) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for demanding industrial, automotive, and communications applications.
The MAX6467/MAX6468 product line was designed specifically for robust microprocessor supervision in harsh environments, delivering precision voltage monitoring, glitch-immune manual reset, and extended temperature operation without external components.
FAQ
What is the exact reset threshold voltage of MAX6467US46D3+ and how tightly is it specified?
The MAX6467US46D3+ has a factory-trimmed nominal reset threshold of 4.625V, with tolerance of ±1.5% at +25°C and ±2.5% over the full -40°C to +85°C range. At +125°C, the specification widens to ±3%. This precision eliminates need for external resistor networks and ensures reliable detection of +5.0V rail collapse in automotive and industrial systems where supply margins are tight.
Does MAX6467US46D3+ support manual reset functionality, and how does its edge-triggered design work?
Yes, MAX6467US46D3+ features an edge-triggered manual reset (MR) input that responds only to the first falling edge, initiating a fixed 150ms one-shot RESET pulse. It includes built-in 150ms rising-edge debounce to ignore subsequent MR transitions during that window-preventing false resets from switch bounce. The internal 1.5kΩ pullup resistor allows MR to float if unused, simplifying board design.
What output type does MAX6467US46D3+ use, and what external components are required?
MAX6467US46D3+ uses an active-low open-drain RESET output, requiring an external pullup resistor (typically 10kΩ–100kΩ) to the host supply rail. Unlike push-pull variants, this configuration enables wired-OR connection with other reset sources (e.g., watchdog timers). No other external components are needed-the device operates autonomously with only VCC, GND, MR, and RESET connections.
How does MAX6467US46D3+ behave during severe supply voltage droop, and down to what VCC level does RESET remain valid?
MAX6467US46D3+ guarantees RESET output validity down to VCC = +1V, ensuring deterministic reset signaling even during deep brownout conditions. Below +1V, the device ceases operation, but the open-drain output remains in high-impedance state-requiring external pullup to maintain defined logic level. This behavior supports safe shutdown sequencing in automotive ECUs where supply collapse must be cleanly reported before total loss.
Is MAX6467US46D3+ qualified for automotive applications, and what temperature range does it cover?
Yes, MAX6467US46D3+ is explicitly specified over the automotive temperature range of -40°C to +125°C and packaged in the AEC-Q200–compatible SOT143-4 outline. Its BiCMOS process, 125°C junction rating, and guaranteed parametric performance across this range make it suitable for under-hood engine control, transmission control, and ADAS domain controllers where ambient temperatures exceed +105°C.
MAX6467US46D3+ 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:
- -
- Type:
- Power Supply Monitor
- 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:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-4
MAX6467US46D3+ FAQ
1.How can I place an order for MAX6467US46D3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6467US46D3+ 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+ reliable?
The price and inventory of MAX6467US46D3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6467US46D3+ is usually 5 days.
3.What payment methods are accepted for MAX6467US46D3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6467US46D3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6467US46D3+?
MAX6467US46D3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6467US46D3+ 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+?
For technical support, including MAX6467US46D3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6467US46D3+ requirements.
6.How does Aetrix verify that MAX6467US46D3+ is sourced from the original manufacturer or authorized distributors?
All MAX6467US46D3+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX6467US46D3+?
All MAX6467US46D3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6467US46D3+, 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+ part is unused and in its original packaging.
Return procedure for MAX6467US46D3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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