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Analog Devices Inc./Maxim Integrated MAX6467US42D3
- Part No.:
- MAX6467US42D3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6467US42D3.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:719
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Product details
Overview
MAX6467US42D3 from Maxim Integrated is a microprocessor supervisory reset circuit in SOT143-4 package, monitoring +4.2V supply with ±2.5% threshold accuracy over -40°C to +125°C, asserting active-low open-drain RESET for 150ms (min) on VCC drop or edge-triggered manual reset, used in automotive and industrial embedded control systems.
For engineers reviewing the MAX6467US42D3 datasheet, MAX6467US42D3 pinout, MAX6467US42D3 application, or MAX6467US42D3 equivalent, key selection criteria include factory-trimmed 4.095V–4.305V reset threshold, 3µA supply current at 1.8V, VCC operation down to +1V, immunity to <100ns MR glitches, and compatibility with +5.0V/+3.3V/+2.5V/+1.8V µP platforms.
Technical Context
The MAX6467US42D3 implements a precision bandgap-based voltage monitor with hysteresis-free threshold detection and edge-triggered one-shot logic for MR input. Its internal 1.5kΩ pullup enables direct pushbutton connection without external components.
It features dual timeout paths: VCC reset timeout (150ms min) triggered by supply droop below 4.2V threshold, and MR one-shot timeout (150ms min) initiated by falling edge on MR, with 150ms rising-edge debounce to suppress switch bounce-both independent of VCC level once asserted.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.095V (min) to 4.305V (max) at -40°C to +85°C; ensures reliable brownout detection for +5.0V systems with 5% tolerance |
| Reset Timeout Period | 150ms (min) to 300ms (max); guarantees sufficient µP reset hold time across temperature and process variation |
| Supply Current | 3µA (typ) at VCC = +1.8V; enables ultra-low-power operation in battery-backed or always-on monitoring circuits |
| Operating Voltage Range | +1.2V to +5.5V; supports valid RESET assertion down to VCC = +1V, critical for graceful shutdown sequencing |
| MR Glitch Rejection | 100ns; rejects noise spikes on manual reset line without requiring external RC filtering |
| MR Rising Debounce | 150ms (min); prevents multiple resets from mechanical switch bounce during release |
| Output Type | Active-low open-drain RESET; requires external pullup for system-level logic compatibility and voltage translation |
Pinout & Package
MAX6467US42D3 is housed in a 4-pin SOT143-4 package (3.0mm × 1.5mm × 1.0mm), optimized for space-constrained automotive and portable applications. The package is RoHS-compliant and qualified for -40°C to +125°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Ground reference | Return path for internal biasing and RESET sink current; must be low-impedance to ensure accurate threshold sensing |
| 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 translation |
| 3 MR | Edge-triggered manual reset input | Falling edge initiates one-shot reset pulse; internal 1.5kΩ pullup allows NC if unused; accepts TTL/CMOS levels |
| 4 VCC | Power supply and monitored voltage | Provides operating power and serves as the sensed rail; bypass with 0.1µF capacitor to GND for transient immunity |
Key Features
| Feature | Design Value |
|---|---|
| Precision factory-set 4.2V threshold | Eliminates external resistor divider and calibration, reducing BOM count and layout area in +5V systems |
| Edge-triggered MR with one-shot timing | Ensures single, deterministic reset pulse per button press regardless of press duration-no software debouncing needed |
| 150ms minimum reset timeout | Meets JEDEC JESD76 requirements for µP reset hold time across full automotive temperature range |
| 3µA supply current at 1.8V | Enables integration into always-on subsystems (e.g., CAN wake-up monitors) without impacting battery life |
| VCC operation down to +1V | Guarantees valid RESET state during deep brownout, supporting controlled firmware save before power loss |
Applications
| Automotive Body Control Module | Industrial PLC I/O Subsystem |
|---|---|
|
Use Scenario: Monitoring 5V supply powering MCU and CAN transceiver in door module under load dump and cold-crank conditions. IC Role / Device Role / Timing Role: Supervisory reset circuit asserting active-low RESET to hold MCU in reset until stable 5V rail is confirmed. Use Value: Factory-trimmed 4.2V threshold matches ISO 7637-2 Pulse 4 (cold crank) margin; 150ms timeout exceeds worst-case µP reset requirement. |
Use Scenario: Ensuring deterministic restart of ARM-based controller after power interruption in DIN-rail mounted PLC. IC Role / Device Role / Timing Role: Edge-triggered manual reset supervisor providing glitch-immune reset initiation via front-panel button. Use Value: 100ns MR glitch rejection prevents spurious resets from EMI; 150ms debounce eliminates false triggers from mechanical switch bounce. |
| Medical Infusion Pump Controller | DSL Modem Power Management |
|
Use Scenario: Validating main 3.3V supply to safety-critical microcontroller during startup and fault recovery sequences. IC Role / Device Role / Timing Role: Precision voltage monitor with guaranteed operation down to VCC = +1V, enabling safe shutdown signaling. Use Value: RESET remains valid while VCC decays from 3.3V to 1V, allowing firmware to store fault logs before power collapse. |
Use Scenario: Providing power-on reset and user-initiated reset for ADSL PHY and DSP subsystems sharing a 5V rail. IC Role / Device Role / Timing Role: Dual-path reset generator-VCC-monitored reset at power-up and edge-triggered MR reset for field service. Use Value: Open-drain RESET output allows wired-OR with other supervisors; 3µA quiescent current minimizes standby power draw. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6384US42D3 | Same 4.2V threshold and 150ms timeout, but uses older BiCMOS process; higher ICC (5µA typ at 1.8V) | Lacks MR rising debounce; requires external RC filter for switch bounce suppression | Select when legacy qualification or second-source validation is required; not recommended for new designs demanding lowest power |
| TLV809E42DBZR | 4.2V threshold with ±1% accuracy, 200ms timeout, push-pull output; no MR input | No manual reset capability; designed for simple power-on reset only | Choose when MR functionality is unnecessary and tighter threshold tolerance is prioritized over flexibility |
Compared with MAX6467US42D3, MAX6384US42D3 offers functional overlap but higher supply current and no integrated MR debounce, while TLV809E42DBZR provides superior threshold accuracy but omits manual reset-making MAX6467US42D3 optimal for automotive and industrial systems requiring robust, self-contained reset supervision with user intervention capability.
Availability
MAX6467US42D3 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLCs, and medical device controllers requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle support.
Supply support for MAX6467US42D3 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, and communications markets.
The MAX6467/MAX6468 family was designed specifically for automotive-grade microprocessor supervision, delivering precision reset thresholds, edge-triggered manual reset, and extended temperature operation in minimal footprint packages.
FAQ
What is the exact reset threshold voltage range for MAX6467US42D3?
The MAX6467US42D3 has a factory-trimmed reset threshold of 4.095V (min) to 4.305V (max) over -40°C to +85°C, and 4.035V (min) to 4.365V (max) over -40°C to +125°C. This 4.2V nominal threshold is optimized for monitoring +5.0V supplies with standard 5% tolerance, ensuring reliable brownout detection without external components. The MAX6467US42D3 achieves this via laser-trimmed internal resistors during wafer test.
Does MAX6467US42D3 support manual reset with switch debouncing?
Yes, the MAX6467US42D3 includes built-in MR rising-edge debounce with a guaranteed 150ms (min) period, eliminating the need for external RC filters. A falling edge on MR initiates a one-shot 150ms (min) RESET pulse, and subsequent falling edges within the debounce window are ignored-ensuring exactly one reset per button press even with mechanical switch bounce. This behavior is intrinsic to the MAX6467US42D3's internal timing circuitry and requires no configuration.
What is the supply current of MAX6467US42D3 at low VCC voltages?
The MAX6467US42D3 draws only 3µA (typical) at VCC = +1.8V and 25°C, rising to 7.5µA (max) across temperature and process variation. At VCC = +1.2V, supply current remains below 10µA-enabling use in ultra-low-power always-on monitoring circuits. This low ICC is achieved through Maxim's proprietary BiCMOS process and optimized internal bias networks, a key differentiator of the MAX6467US42D3 versus legacy supervisors.
Can MAX6467US42D3 operate reliably during deep brownout conditions?
Yes, the MAX6467US42D3 guarantees valid RESET output down to VCC = +1V, meaning it continues asserting or deasserting RESET correctly as the supply decays from 4.2V to 1V. This ensures the host µP receives unambiguous reset signaling throughout brownout, enabling safe state capture before power loss. Below +1V, the MAX6467US42D3 ceases operation-but its behavior above +1V is fully specified and tested per AEC-Q100.
What package and pinout does MAX6467US42D3 use?
The MAX6467US42D3 is supplied in a 4-pin SOT143-4 package (3.0mm × 1.5mm × 1.0mm) with pins arranged as GND (1), RESET (2), MR (3), VCC (4) in top-view orientation. This pinout is identical across all MAX6467USxxD3 variants and matches industry-standard supervisory IC layouts, simplifying PCB reuse. The SOT143 package is qualified for automotive reflow profiles and supports automated optical inspection (AOI) due to its gull-wing leads.
MAX6467US42D3 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:
- 4.2V
- 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
MAX6467US42D3 FAQ
1.How can I place an order for MAX6467US42D3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6467US42D3 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 MAX6467US42D3 reliable?
The price and inventory of MAX6467US42D3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6467US42D3 is usually 5 days.
3.What payment methods are accepted for MAX6467US42D3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6467US42D3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6467US42D3?
MAX6467US42D3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6467US42D3 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 MAX6467US42D3?
For technical support, including MAX6467US42D3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6467US42D3 requirements.
6.How does Aetrix verify that MAX6467US42D3 is sourced from the original manufacturer or authorized distributors?
All MAX6467US42D3 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 MAX6467US42D3 meets industry standards.
7.What is the process for return or replacement of MAX6467US42D3?
All MAX6467US42D3 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6467US42D3, 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 MAX6467US42D3 part is unused and in its original packaging.
Return procedure for MAX6467US42D3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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