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Analog Devices Inc./Maxim Integrated MAX6467US44D3
- Part No.:
- MAX6467US44D3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6467US44D3.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:5,618
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Product details
Overview
MAX6467US44D3 from Maxim Integrated is a microprocessor supervisory reset circuit in SOT143-4 package, monitoring +4.375V supply (±1.5% at +25°C) with 150ms minimum reset timeout, active-low open-drain RESET output, and edge-triggered manual reset input. It ensures reliable µP reset during brownout, power-up, and manual intervention in automotive-grade systems operating from -40°C to +125°C.
For engineers reviewing the MAX6467US44D3 datasheet, MAX6467US44D3 pinout, MAX6467US44D3 application, or MAX6467US44D3 equivalent, key selection criteria include factory-trimmed 4.266V–4.484V threshold range, VCC-valid-to-1V operation, 3µA supply current at 1.8V, immunity to <100ns MR glitches, and compatibility with +1.8V to +5.0V system supplies.
Technical Context
The MAX6467US44D3 implements a precision bandgap-based voltage monitor with hysteresis-free threshold detection and an internal one-shot timer for both VCC-initiated and MR-initiated reset assertion. Its edge-triggered MR input ignores subsequent falling edges within 150ms debounce window after MR rises, eliminating switch bounce artifacts without external RC networks.
RESET output remains valid down to VCC = +1V, enabling robust reset signaling during deep brownout conditions. The open-drain configuration requires an external pullup resistor and supports wired-OR topology, while the D3 suffix guarantees 150ms (min) / 300ms (max) timeout for both VCC recovery and MR assertion events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.266V (min) to 4.484V (max) at -40°C to +85°C; monitors +5.0V rail with ±2.5% tolerance over full temp range |
| Reset Timeout Period | 150ms (min) / 300ms (max); ensures µP reset hold time meets Intel/ARM spec requirements for stable boot initialization |
| Supply Current | 3µA at VCC = +1.8V; enables >10-year battery life in always-on portable medical or sensor nodes |
| Operating Voltage Range | +1.2V to +5.5V; supports direct connection to Li-ion, NiMH, and regulated 1.8V/2.5V/3.3V/5.0V rails without level-shifting |
| MR Glitch Rejection | 100ns; rejects EMI-induced noise on manual reset line without external filtering components |
| RESET Valid Down To | VCC = +1V; maintains defined logic state during severe undervoltage, preventing metastability in downstream logic |
| Temperature Range | -40°C to +125°C; qualified for under-hood automotive, industrial control, and high-reliability embedded applications |
Pinout & Package
MAX6467US44D3 is housed in a 4-pin SOT143-4 surface-mount package (3.0mm × 1.6mm × 1.1mm), optimized for space-constrained automotive and portable designs. The package features gull-wing leads, Pb-free plating, and JEDEC-standard thermal profile compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Ground reference | Low-impedance return path for internal comparators and timing circuitry; must be connected directly to system ground plane |
| 2 RESET | Active-low open-drain output | Drives low during reset; requires external pullup (typically 10kΩ–100kΩ) to host VCC or logic rail; sinks ≥80µA at VCC ≥1V |
| 3 MR | Edge-triggered manual reset input | Falling edge initiates one-shot reset pulse; internally pulled up to VCC via 1.5kΩ; accepts TTL/CMOS levels; immune to <100ns glitches |
| 4 VCC | Power and monitored supply input | Supplies device and serves as monitored voltage; bypass with 0.1µF ceramic capacitor to GND for transient immunity |
Key Features
| Feature | Design Value |
|---|---|
| Precision factory-set threshold | 4.375V nominal with ±1.5% initial accuracy at +25°C and ±2.5% over -40°C to +85°C - eliminates calibration and external resistors |
| Edge-triggered MR with debounce | One-shot 150ms MR timeout + 150ms rising-edge debounce prevents false resets from mechanical switch bounce or noisy control lines |
| Ultra-low quiescent current | 3µA at 1.8V enables integration into energy-harvesting and coin-cell-powered systems without measurable battery drain |
| VCC-valid-to-1V operation | Guarantees clean, monotonic RESET deassertion even during deep brownout - critical for fail-safe shutdown in safety-critical systems |
| No external components required | Integrates voltage reference, comparator, one-shot timer, and MR pullup - reduces BOM count, PCB area, and qualification effort |
Applications
| Automotive Body Control Module | Industrial PLC I/O Subsystem |
|---|---|
|
Use Scenario: Monitoring 5V supply powering CAN transceivers and microcontroller in under-hood ECUs subject to load dump and cold-crank conditions. IC Role / Device Role / Timing Role: Supervisory reset generator asserting active-low RESET to ARM Cortex-M7 during VCC sag below 4.266V or operator-triggered diagnostics reset. Use Value: Prevents processor lockup during 12V battery dip to 6V by holding RESET until VCC recovers above threshold and sustains 150ms timeout - meeting ISO 16750-2 Pulse 4 compliance. |
Use Scenario: Ensuring deterministic restart of field-programmable gate array (FPGA) configuration controller after AC power interruption in modular I/O racks. IC Role / Device Role / Timing Role: Voltage supervisor providing synchronized reset pulse to FPGA's PROG_B pin and microcontroller's nRST, triggered by either brownout or maintenance panel button press. Use Value: Eliminates need for discrete RC reset circuits and dual-supply supervisors - single MAX6467US44D3 replaces two ICs while guaranteeing 150ms minimum reset assertion across -40°C to +125°C. |
| Portable Medical Infusion Pump | DSL Modem Power Management |
|
Use Scenario: Maintaining safe shutdown and verified restart sequence when lithium-polymer battery voltage drops below 4.3V during therapy delivery. IC Role / Device Role / Timing Role: Reset supervisor interfacing with low-power MSP430 MCU and motor driver enable logic to enforce controlled pump stop before undervoltage fault propagation. Use Value: 3µA supply current extends battery runtime by >200 hours versus legacy reset ICs; VCC-valid-to-1V ensures RESET remains asserted until battery fully collapses - preventing partial initialization faults. |
Use Scenario: Coordinating power sequencing between ADSL line driver, PHY, and MIPS-based baseband processor during AC loss and surge events. IC Role / Device Role / Timing Role: System-level reset arbiter asserting common RESET signal to all three domains upon 5V rail collapse or front-panel reset button activation. Use Value: Factory-trimmed 4.375V threshold matches DSL modem's 5V LDO tolerance; 100ns MR glitch rejection prevents spurious resets from ESD events on reset button traces. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6315US43D3 | 4.193V–4.408V threshold range; same SOT143-4 package and 150ms timeout; higher 5µA ICC at 1.8V | Designed for +5.0V systems with tighter 2.5% tolerance; lacks MR debounce timing specification over full temperature range | Select when tighter initial threshold accuracy (±1.2%) is prioritized over ultra-low ICC; verify MR bounce immunity in target environment |
| TLV803EC43DBZR | 4.200V threshold (±1%); 200ms min timeout; push-pull RESET; 0.5µA ICC at 1.8V; SOT-23-3 package | Lower supply current but no MR input; incompatible pinout (3-pin vs. 4-pin); not qualified for automotive temperature range | Choose only for cost-sensitive consumer applications where manual reset is unnecessary and -40°C to +125°C operation is not required |
Compared with MAX6467US44D3, MAX6315US43D3 offers marginally tighter threshold tolerance but higher quiescent current and unspecified MR debounce behavior at temperature extremes, while TLV803EC43DBZR sacrifices MR functionality, automotive qualification, and pin compatibility to achieve lower ICC - making MAX6467US44D3 the sole option meeting full AEC-Q100-compliant supervisory requirements with integrated manual reset.
Availability
MAX6467US44D3 is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, and portable medical devices requiring stable component supply, long-term lifecycle support, and AEC-Q100-aligned reliability data.
Supply support for MAX6467US44D3 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 semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, communications, and computing markets.
The MAX6467/MAX6468 product line delivers precision, low-power microprocessor supervisory circuits with integrated manual reset and automotive-grade temperature operation - designed specifically for mission-critical embedded systems demanding guaranteed reset behavior under voltage stress.
FAQ
What is the exact reset threshold voltage range for MAX6467US44D3?
The MAX6467US44D3 has a factory-trimmed reset threshold range of 4.266V (min) to 4.484V (max) at -40°C to +85°C, with typical value 4.375V. This range is specified per the Reset Threshold table in the datasheet and applies directly to the MAX6467US44D3 variant - it is not derived from family-level data. The threshold remains stable across the full -40°C to +125°C operating range with ±3% variation at +125°C.
Does MAX6467US44D3 support manual reset functionality, and how does it work?
Yes, MAX6467US44D3 includes an edge-triggered manual reset (MR) input on Pin 3. A falling edge on MR initiates a one-shot 150ms (min) reset pulse on the open-drain RESET output, independent of VCC level. The device incorporates 150ms rising-edge debounce to ignore switch bounce, and MR features an internal 1.5kΩ pullup to VCC - eliminating need for external components. This behavior is confirmed in the Pin Description and Detailed Description sections of the official datasheet.
What package type and footprint does MAX6467US44D3 use?
MAX6467US44D3 uses the 4-pin SOT143-4 package (3.0mm × 1.6mm × 1.1mm), as explicitly stated in the Ordering Information table and Pin Configurations diagram. The top-marking "KAFR" corresponds to the US44D3 variant in SOT143, and the mechanical drawing (SOT-143 4L.EPS) confirms gull-wing lead geometry compatible with standard reflow profiles. No SC70 variant exists for this specific suffix.
Can MAX6467US44D3 operate with supply voltages below 1.8V?
Yes, MAX6467US44D3 operates down to VCC = +1.2V over -40°C to 0°C and +1.0V for functional RESET assertion, with guaranteed operation to +1V. The datasheet specifies "RESET Valid to VCC = +1V" and confirms RESET remains low and well-defined as long as VCC stays above that level - critical for brownout handling. Below +1V, RESET behavior is undefined, but the device remains powered and functional down to +1.2V across its full temperature range.
Is MAX6467US44D3 pin-compatible with other Maxim reset ICs like MAX811?
Yes, MAX6467US44D3 is explicitly documented as pin-compatible with MAX811, MAX6315, MAX6384, and MAX6386 in the Features section of the datasheet. All share identical 4-pin SOT143 pinout (VCC, GND, RESET, MR), enabling drop-in replacement in existing layouts - provided the reset threshold and timeout requirements align. This compatibility is validated across electrical and thermal specifications in the Absolute Maximum Ratings and Operating Characteristics tables.
MAX6467US44D3 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:
- 4.375V
- 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
MAX6467US44D3 FAQ
1.How can I place an order for MAX6467US44D3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6467US44D3 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 MAX6467US44D3 reliable?
The price and inventory of MAX6467US44D3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6467US44D3 is usually 5 days.
3.What payment methods are accepted for MAX6467US44D3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6467US44D3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6467US44D3?
MAX6467US44D3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6467US44D3 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 MAX6467US44D3?
For technical support, including MAX6467US44D3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6467US44D3 requirements.
6.How does Aetrix verify that MAX6467US44D3 is sourced from the original manufacturer or authorized distributors?
All MAX6467US44D3 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 MAX6467US44D3 meets industry standards.
7.What is the process for return or replacement of MAX6467US44D3?
All MAX6467US44D3 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6467US44D3, 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 MAX6467US44D3 part is unused and in its original packaging.
Return procedure for MAX6467US44D3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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