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Analog Devices Inc./Maxim Integrated MAX6467US31D3-T
- Part No.:
- MAX6467US31D3-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6467US31D3-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
MAX6467US31D3-T from Maxim Integrated is a microprocessor supervisory reset circuit in SOT143-4 package, monitoring +3.075V supply with ±1.5% threshold accuracy at +25°C and asserting active-low open-drain RESET for 150ms (min) after VCC drop or MR edge trigger. It operates from +1.2V to +5.5V, draws only 3µA at +1.8V, and supports automotive-grade operation from −40°C to +125°C in portable medical devices and GPS systems.
For engineers reviewing the MAX6467US31D3-T datasheet, MAX6467US31D3-T pinout, MAX6467US31D3-T application, or MAX6467US31D3-T equivalent, this page delivers verified electrical parameters, exact pin functions, confirmed automotive temperature compliance, factory-trimmed reset threshold behavior, and validated alternative options for manual-reset supervisory circuits requiring edge-triggered one-shot timing and VCC ≥ +1V RESET validity.
Technical Context
The MAX6467US31D3-T implements a precision bandgap-based voltage comparator with internal hysteresis to detect VCC drops below its factory-set 3.075V threshold. Its edge-triggered MR input uses an internal 1.5kΩ pullup and debounces falling edges with a fixed 150ms rising-edge debounce window (tDEB), ensuring immunity to switch bounce.
RESET assertion is strictly time-controlled: VCC-initiated resets hold low for 150–300ms after VCC recovers above threshold; MR-initiated resets pulse low for exactly 150–300ms regardless of MR pulse width. The open-drain output remains functional down to VCC = +1V, with VOL ≤ 0.3V at ISINK = 80µA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.075V (typ), ±1.5% tolerance at +25°C - precisely monitors +3.0V supplies without external resistors |
| VCC Operating Range | +1.2V to +5.5V - supports wide-input systems including battery-backed and low-voltage embedded designs |
| Reset Timeout Period | 150ms (min) to 300ms (max) - ensures reliable µP initialization across diverse processor boot sequences |
| Supply Current | 3µA at VCC = +1.8V - enables ultra-low-power operation in always-on battery-powered equipment |
| MR Debounce Period | 150ms (min) to 300ms (max) - guarantees single, glitch-free reset assertion per button press |
| RESET Valid Down To | VCC = +1V - maintains valid logic levels during deep brownout conditions before full power loss |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive and industrial environments |
Pinout & Package
MAX6467US31D3-T is housed in a 4-pin SOT143-4 surface-mount package (3.0mm × 1.7mm × 1.3mm), optimized for space-constrained PCB layouts in portable electronics and automotive modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - GND | Ground reference | Return path for all internal circuitry; must be connected directly to system ground plane for noise immunity |
| 2 - RESET | Active-low open-drain reset output | Requires external pullup resistor; sinks up to 80µA while asserted; valid down to VCC = +1V |
| 3 - MR | Edge-triggered manual reset input | Falling edge initiates one-shot reset; internally pulled up to VCC via 1.5kΩ; ignores bounce within 150ms tDEB window |
| 4 - VCC | Power supply and monitored voltage | Supplies device and serves as monitored rail; bypass with 0.1µF capacitor to GND for transient immunity |
Key Features
| Feature | Design Value |
|---|---|
| Precision factory-trimmed threshold | 3.075V ±1.5% at +25°C eliminates calibration resistors and improves supply-monitoring repeatability |
| Edge-triggered MR with one-shot timing | Guarantees single 150–300ms RESET pulse per button press, independent of MR hold duration |
| Immunity to short VCC transients | Rejects glitches ≤100ns duration and <100mV overdrive - prevents spurious resets in noisy environments |
| Low supply current | 3µA at +1.8V enables >10-year battery life in maintenance-free IoT sensors and wearables |
| VCC ≥ +1V RESET validity | Ensures deterministic reset signaling during gradual brownout, critical for safe shutdown in automotive ECUs |
Applications
| GPS Navigation Modules | Automotive Body Control Units |
|---|---|
|
Use Scenario: GPS receivers powered by vehicle battery with voltage fluctuations during engine cranking. IC Role / Device Role / Timing Role: Supervisory reset circuit monitoring +3.0V LDO output, asserting RESET during brownout and on user-initiated cold reboot. Use Value: Prevents corrupted satellite lock state by enforcing full µP reset when VCC dips below 3.075V, with 150ms timeout matching baseband processor boot requirements. |
Use Scenario: Central body controller managing door locks, lighting, and HVAC using a 32-bit MCU. IC Role / Device Role / Timing Role: Automotive-grade reset supervisor verifying +3.0V domain integrity and enabling service-mode manual reset via diagnostic port. Use Value: −40°C to +125°C operation ensures reliability in under-dash mounting; open-drain RESET interfaces cleanly with multiple voltage-rail supervisors in multi-MCU architectures. |
| Portable Medical Monitors | Digital Camera Power Management |
|
Use Scenario: Battery-powered ECG monitor operating from Li-ion cell with aging-induced voltage sag. IC Role / Device Role / Timing Role: Low-current (3µA) reset supervisor detecting undervoltage on +3.0V analog front-end supply and triggering safe data save before shutdown. Use Value: 3.075V threshold aligns with ADC reference stability margin; 150ms timeout allows firmware to flush memory buffers without missing critical waveform samples. |
Use Scenario: DSLR camera with dual-core image processor and high-speed sensor interface. IC Role / Device Role / Timing Role: Reset coordinator asserting synchronized RESET to processor, ISP, and sensor interface upon power-up or lens-detach event. Use Value: Edge-triggered MR enables clean hardware-initiated reset during hot-swap lens changes; open-drain output allows wired-OR with other system supervisors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6384US31D3-T | Same 3.075V threshold and 150ms timeout, but push-pull RESET output (not open-drain) | Requires no external pullup; unsuitable for wired-OR reset bus configurations | Select when driving single-load RESET lines and minimizing BOM count |
| MAX811TEUS+T | 3.08V threshold, 140ms min timeout, −40°C to +85°C temp range (not automotive) | Lacks extended temperature qualification; higher ICC (10µA typical) | Select for cost-sensitive commercial-grade applications where automotive temp range is unnecessary |
Compared with MAX6467US31D3-T, MAX6384US31D3-T offers push-pull drive but forfeits wired-OR capability, while MAX811TEUS+T trades automotive qualification and ultra-low ICC for lower unit cost in non-automotive designs.
Availability
MAX6467US31D3-T is available at Aetrix Electronics and suitable for GPS navigation modules, automotive body control units, and portable medical monitors requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6467US31D3-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 guaranteed operation down to VCC = +1V for fail-safe embedded systems.
FAQ
What is the exact reset threshold voltage of the MAX6467US31D3-T?
The MAX6467US31D3-T has a factory-trimmed reset threshold of 3.075V (typical), with ±1.5% tolerance at +25°C and ±2.5% over −40°C to +85°C. This value is permanently laser-trimmed during manufacturing and applies specifically to the "31" suffix variant, enabling precise monitoring of +3.0V supply rails without external components.
Does the MAX6467US31D3-T support automotive temperature requirements?
Yes, the MAX6467US31D3-T is fully specified for operation from −40°C to +125°C and qualifies for automotive applications. Its datasheet explicitly states automotive temperature range compliance, and the "/V" marking option (though not present in this specific part number) confirms Maxim's automotive qualification process for the MAX6467 family.
What type of RESET output does the MAX6467US31D3-T provide?
The MAX6467US31D3-T provides an active-low open-drain RESET output, requiring an external pullup resistor. This configuration enables wired-OR connection with other reset sources - a key differentiator from push-pull alternatives like the MAX6468 or MAX6384 variants - and ensures compatibility with multi-rail supervision schemes.
How long does the RESET signal stay asserted after a manual reset trigger on the MAX6467US31D3-T?
After a falling edge on the MR pin, the MAX6467US31D3-T asserts RESET low for a fixed one-shot period of 150ms (minimum) to 300ms (maximum), independent of how long MR remains low. This timing matches the D3 suffix specification and is guaranteed across the full −40°C to +125°C temperature range.
Can the MAX6467US31D3-T operate reliably below 1.8V supply voltage?
Yes, the MAX6467US31D3-T operates down to VCC = +1.2V over −40°C to 0°C and +1.0V over 0°C to +125°C. Its RESET output remains valid (VOL ≤ 0.3V) as long as VCC stays above +1V, making it suitable for brownout detection in deeply scaled low-voltage systems where other supervisors fail.
MAX6467US31D3-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:
- 3.075V
- 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
MAX6467US31D3-T FAQ
1.How can I place an order for MAX6467US31D3-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6467US31D3-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 MAX6467US31D3-T reliable?
The price and inventory of MAX6467US31D3-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6467US31D3-T is usually 5 days.
3.What payment methods are accepted for MAX6467US31D3-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6467US31D3-T transactions.
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4.How is shipping managed for MAX6467US31D3-T?
MAX6467US31D3-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6467US31D3-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 MAX6467US31D3-T?
For technical support, including MAX6467US31D3-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6467US31D3-T requirements.
6.How does Aetrix verify that MAX6467US31D3-T is sourced from the original manufacturer or authorized distributors?
All MAX6467US31D3-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 MAX6467US31D3-T meets industry standards.
7.What is the process for return or replacement of MAX6467US31D3-T?
All MAX6467US31D3-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6467US31D3-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 MAX6467US31D3-T part is unused and in its original packaging.
Return procedure for MAX6467US31D3-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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