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Analog Devices Inc./Maxim Integrated MAX6467US16D7
- Part No.:
- MAX6467US16D7
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6467US16D7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:1,649
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Product details
Overview
MAX6467US16D7 from Maxim Integrated is a microprocessor supervisory reset circuit in SOT143-4 package, monitoring +1.8V supply with factory-trimmed 1.575V reset threshold (±2.5% over -40°C to +85°C), 1200ms min VCC reset timeout, and active-low open-drain RESET output. It ensures reliable µP reset during brownout, power-up, and manual initiation in automotive and industrial embedded systems.
For engineers reviewing the MAX6467US16D7 datasheet, MAX6467US16D7 pinout, MAX6467US16D7 application, or MAX6467US16D7 equivalent, key selection factors include its 1.575V threshold tolerance, 1200ms reset timeout, open-drain output requiring external pullup, operation down to VCC = +1V, and immunity to sub-100ns MR glitches - critical for noise-prone automotive ECUs and battery-powered medical devices.
Technical Context
The MAX6467US16D7 implements edge-triggered, one-shot manual reset logic: a falling edge on MR initiates a fixed 150ms–300ms pulsed RESET assertion, independent of MR pulse width, with internal 150ms rising-edge debounce to suppress switch bounce. Its reset detection uses precision bandgap reference with ±2.5% threshold accuracy over -40°C to +85°C and ±3% over full -40°C to +125°C range.
VCC monitoring operates from +1.2V to +5.5V with 3µA supply current at +1.8V; RESET remains valid as low as VCC = +1V. The open-drain output supports flexible voltage translation via external pullup and tolerates up to +6.0V on RESET pin, enabling interfacing with higher-voltage logic domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 1.575V (min), ±2.5% over -40°C to +85°C - precisely matches +1.8V supply with 5% margin for brownout detection |
| VCC Reset Timeout | 1200ms (min), 2400ms (max) - ensures sufficient hold time for slow-starting µPs in automotive infotainment systems |
| MR Timeout Period | 150ms (min), 300ms (max) - guarantees consistent manual reset pulse width regardless of button press duration |
| Supply Current | 3µA at VCC = +1.8V - enables multi-year battery life in portable medical sensors and GPS trackers |
| Operating Voltage Range | +1.2V to +5.5V - supports wide-input industrial power rails and legacy 5V µP platforms |
| RESET Output Type | Active-low open-drain - allows level-shifting via external pullup to 1.8V/3.3V/5V logic without additional translators |
| MR Glitch Rejection | 100ns - rejects EMI-induced noise on manual reset line in electric vehicle control modules |
Pinout & Package
Package: 4-pin SOT143-4 (JEDEC TO-253-4), 1.3mm × 2.1mm footprint, -40°C to +125°C automotive grade.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Ground reference | Return path for internal bias 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) |
| 3 MR | Edge-triggered manual reset input | Falling edge initiates one-shot reset; internal 1.5kΩ pullup to VCC allows NC if unused; accepts TTL/CMOS levels |
| 4 VCC | Power and monitored supply input | Supplies device and serves as monitored rail; bypass with 0.1µF ceramic capacitor to GND for transient immunity |
Key Features
| Feature | Design Value |
|---|---|
| Precision factory-set threshold | 1.575V ±2.5% over -40°C to +85°C eliminates calibration resistors and reduces BOM count in space-constrained PCBs |
| Edge-triggered MR with one-shot timing | Guarantees fixed 150–300ms RESET pulse even with sustained MR low - prevents unintended repeated resets from sticky switches |
| 1200ms VCC reset timeout | Meets automotive cold-cranking requirements where supply may dip below threshold for >1 second before stabilizing |
| Valid RESET down to VCC = +1V | Ensures deterministic reset behavior during deep brownout conditions common in 12V automotive systems with LDO dropout |
| Immunity to short VCC transients | Rejects <100ns glitches at 100mV overdrive - maintains system stability during switching regulator noise coupling |
Applications
| Automotive Body Control Module | Portable Medical Glucose Monitor |
|---|---|
Use Scenario: Monitors 12V-to-3.3V LDO output powering MCU in door module during engine cranking. IC Role / Device Role / Timing Role: Supervisory reset generator asserting RESET during VCC dips below 1.575V for ≥1200ms. Use Value: Prevents MCU lockup during 500ms cold-crank events by guaranteeing reset hold time exceeds worst-case supply recovery. |
Use Scenario: Ensures reliable startup and brownout recovery in AAA-battery-powered glucose meter with 1.8V rail. IC Role / Device Role / Timing Role: Low-current (3µA) supervisor providing 1.575V threshold detection and manual reset via tactile button. Use Value: Extends battery life beyond 2 years while maintaining reset validity down to VCC = +1V during end-of-life battery discharge. |
| Industrial PLC I/O Module | GPS Tracking Beacon |
Use Scenario: Guards ARM Cortex-M4 processor against undervoltage during 24V DC field power fluctuations. IC Role / Device Role / Timing Role: Edge-triggered MR interface for maintenance reset; open-drain RESET pulled to 3.3V logic domain. Use Value: Eliminates need for external debounce RC network and supports hot-swap reset without firmware intervention. |
Use Scenario: Provides fail-safe reset for GNSS SoC during solar-charged Li-ion battery voltage sag in remote asset trackers. IC Role / Device Role / Timing Role: Monitors 1.8V core supply with 1200ms timeout to accommodate slow GPS cold-start sequences. Use Value: Prevents partial initialization failures by ensuring MCU remains held in reset until GNSS receiver achieves stable lock. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6315US29D3 | Higher 2.925V reset threshold; 150ms reset timeout; same SOT143-4 package and open-drain output | Designed for +3.3V systems; unsuitable for +1.8V monitoring due to 1.35V minimum threshold | Select only when supervising 3.3V rails with shorter reset hold requirements |
| TLV803EC29DBZR | 2.93V threshold; 140ms timeout; push-pull output; 1.8V–6V operating range; SOT23-3 package | Lacks MR input and edge-triggered manual reset; smaller 3-pin footprint but no manual reset capability | Choose when manual reset is unnecessary and board space is constrained to 3-pin layout |
Compared with MAX6467US16D7, MAX6315US29D3 offers faster reset release but cannot monitor 1.8V supplies, while TLV803EC29DBZR saves board area but removes critical manual reset functionality - making MAX6467US16D7 uniquely suited for automotive and portable designs requiring both precise low-voltage supervision and robust operator-initiated reset.
Availability
MAX6467US16D7 is available at Aetrix Electronics and suitable for automotive body control modules, portable medical diagnostics, industrial PLC I/O, GPS tracking beacons, and battery-powered sensor nodes requiring stable component supply across extended temperature ranges.
Supply support for MAX6467US16D7 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 high-performance analog and mixed-signal ICs for automotive, industrial, and communications markets, emphasizing reliability and integration.
The MAX6467/MAX6468 family targets automotive-grade power-supply supervision with edge-triggered manual reset, addressing stringent AEC-Q100 requirements for under-hood and infotainment applications.
FAQ
What is the exact reset threshold voltage of MAX6467US16D7 and its tolerance over temperature?
The MAX6467US16D7 has a factory-trimmed reset threshold of 1.575V, with ±2.5% tolerance over -40°C to +85°C and ±3% over the full -40°C to +125°C automotive range. This specification is confirmed in the Reset Threshold table of the official datasheet and ensures accurate brownout detection for +1.8V systems across extreme environmental conditions. The MAX6467US16D7 achieves this using a precision bandgap reference, eliminating need for external resistor dividers.
Does MAX6467US16D7 support manual reset functionality, and how does it behave?
Yes, MAX6467US16D7 features an edge-triggered manual reset (MR) input that responds only to falling edges, initiating a fixed one-shot RESET pulse of 150ms–300ms duration. Internal 150ms rising-edge debounce prevents false triggers from switch bounce, and the 1.5kΩ internal pullup allows MR to remain unconnected if unused. This behavior is explicitly documented in the Pin Description and Detailed Description sections of the MAX6467US16D7 datasheet.
What is the supply current consumption of MAX6467US16D7 at 1.8V, and why does it matter?
The MAX6467US16D7 draws only 3µA typical supply current at VCC = +1.8V, as specified in the Electrical Characteristics table. This ultra-low quiescent current directly extends battery life in portable applications such as medical glucose monitors and GPS trackers - enabling multi-year operation on coin-cell or small Li-ion batteries without compromising reset reliability. The MAX6467US16D7 maintains this performance across its full -40°C to +125°C operating range.
Can MAX6467US16D7 operate reliably when VCC drops below 1.8V, and down to what voltage?
Yes, MAX6467US16D7 guarantees functional operation and valid RESET output down to VCC = +1V, as stated in the Absolute Maximum Ratings and Electrical Characteristics tables. This capability ensures deterministic reset behavior during deep brownout events common in automotive 12V systems with cascaded regulators, where intermediate rails may sag below nominal voltage. The MAX6467US16D7 continues asserting RESET until VCC recovers above 1.575V and holds it for the full 1200ms timeout.
What package type and pin configuration does MAX6467US16D7 use, and where is this defined?
MAX6467US16D7 uses the 4-pin SOT143-4 package (JEDEC TO-253-4), with pin 1 = GND, pin 2 = RESET (open-drain), pin 3 = MR, and pin 4 = VCC - confirmed in the Pin Configurations section and Package Information of the official datasheet. The top-marking "KAFN" uniquely identifies this variant, and the SOT143 footprint measures 1.3mm × 2.1mm, supporting high-density automotive PCB layouts requiring AEC-Q200-compliant packaging.
MAX6467US16D7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- TO-253-4, TO-253AA
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 1.575V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 1.2s Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-4
MAX6467US16D7 FAQ
1.How can I place an order for MAX6467US16D7 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6467US16D7 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 MAX6467US16D7 reliable?
The price and inventory of MAX6467US16D7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6467US16D7 is usually 5 days.
3.What payment methods are accepted for MAX6467US16D7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6467US16D7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6467US16D7?
MAX6467US16D7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6467US16D7 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 MAX6467US16D7?
For technical support, including MAX6467US16D7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6467US16D7 requirements.
6.How does Aetrix verify that MAX6467US16D7 is sourced from the original manufacturer or authorized distributors?
All MAX6467US16D7 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 MAX6467US16D7 meets industry standards.
7.What is the process for return or replacement of MAX6467US16D7?
All MAX6467US16D7 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6467US16D7, 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 MAX6467US16D7 part is unused and in its original packaging.
Return procedure for MAX6467US16D7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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