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Analog Devices Inc./Maxim Integrated MAX6467US16D7-T
- Part No.:
- MAX6467US16D7-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6467US16D7-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:15,000
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Product details
Overview
MAX6467US16D7-T from Maxim Integrated is a microprocessor supervisory reset circuit in SOT143-4 package, monitoring +1.8V supply with factory-trimmed 1.575V reset threshold (±1.5% at +25°C), 1200ms minimum VCC reset timeout, active-low open-drain RESET output, and edge-triggered manual reset input. It ensures reliable power-on reset and brownout recovery in automotive-grade embedded systems.
For engineers reviewing the MAX6467US16D7-T datasheet, MAX6467US16D7-T pinout, MAX6467US16D7-T application, or MAX6467US16D7-T equivalent, key selection criteria include its -40°C to +125°C operation, 3µA supply current at 1.8V, VCC-valid-to-1V behavior, and immunity to <100ns MR glitches - critical for battery-powered and safety-critical control systems.
Technical Context
The MAX6467US16D7-T implements a precision bandgap-based voltage monitor with ±1.5% threshold accuracy at +25°C, degrading to ±3% over -40°C to +125°C. Its internal one-shot timer generates a fixed 1200ms (min) reset pulse after VCC recovery or MR falling edge, independent of external components.
It features an edge-triggered MR input with 150ms rising debounce period and 1µs minimum pulse width requirement, rejecting switch bounce and noise transients. The open-drain RESET output requires an external pullup and remains valid down to VCC = +1V, enabling robust reset assertion during deep brownout conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 1.575V (typ), ±1.5% at +25°C - precisely monitors +1.8V supply with margin for tolerance and drift |
| VCC Reset Timeout | 1200ms (min) - ensures sufficient hold time for slow-starting µPs or complex boot sequences |
| Supply Current | 3µA at VCC = +1.8V - enables multi-year operation in coin-cell–powered devices |
| Operating Voltage Range | +1.2V to +5.5V - supports wide-input systems including Li-ion, 3.3V, and 5V rails |
| Temperature Range | -40°C to +125°C - qualified for under-hood automotive and industrial environments |
| MR Glitch Rejection | 100ns - suppresses EMI-induced false resets on manual reset line |
| RESET Valid Down To | VCC = +1V - guarantees clean reset assertion even during severe undervoltage collapse |
Pinout & Package
MAX6467US16D7-T uses the 4-pin SOT143-4 surface-mount package (3.0mm × 1.7mm × 1.3mm), optimized for space-constrained automotive and portable applications.
| 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 | Drives low to assert reset; requires external pullup resistor (typically 10kΩ–100kΩ) to host VCC or logic rail |
| 3 MR | Edge-triggered manual reset input | Falling edge initiates 1200ms one-shot reset pulse; internally pulled up to VCC via 1.5kΩ resistor |
| 4 VCC | Power and monitored supply input | Supplies device and serves as monitored rail; bypass with 0.1µF ceramic capacitor to GND for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Precision factory-set 1.575V threshold | Eliminates external resistor divider and calibration, reducing BOM count and layout area |
| 1200ms min VCC reset timeout | Guarantees µP reset hold time exceeds longest boot initialization sequences in automotive ECUs |
| Edge-triggered MR with 150ms debounce | Prevents spurious resets from mechanical switch bounce without external RC network |
| Open-drain RESET with VCC = +1V validity | Enables fail-safe reset assertion during catastrophic supply collapse, before regulator dropout |
| 3µA supply current at 1.8V | Supports >10-year battery life in always-on monitoring circuits powered by CR2032 cells |
Applications
| Automotive Engine Control Unit | Industrial PLC I/O Module |
|---|---|
|
Use Scenario: Monitors 1.8V core supply in engine ECU microcontroller during cold cranking and load dump events. IC Role / Device Role / Timing Role: Supervisory reset generator ensuring deterministic µP reset on brownout, with 1200ms timeout matching bootloader timing. Use Value: Prevents firmware corruption by guaranteeing full reset assertion during transient <6V battery dips, validated across -40°C to +125°C. |
Use Scenario: Provides power-fail detection and controlled restart in modular PLC backplane interface cards. IC Role / Device Role / Timing Role: Voltage supervisor asserting reset when 1.8V FPGA configuration rail drops below 1.575V. Use Value: Enables safe state capture and graceful shutdown before logic corruption, leveraging 3µA quiescent current for low-power standby. |
| Medical Infusion Pump Controller | DSL Modem Power Management |
|
Use Scenario: Ensures reliable reset of safety-critical ARM Cortex-M4 during battery switchover and low-voltage alarms. IC Role / Device Role / Timing Role: Fault-tolerant reset source with edge-triggered MR for emergency stop button interface. Use Value: Meets IEC 62304 Class C requirements via guaranteed 100ns MR glitch rejection and -40°C to +125°C qualification. |
Use Scenario: Manages power sequencing and brownout recovery in DSL line card ASICs operating from 1.8V LDOs. IC Role / Device Role / Timing Role: System-level reset coordinator asserting synchronized reset to multiple ICs upon 1.8V rail failure. Use Value: Eliminates need for discrete RC reset timers, reducing component count while improving temperature stability vs. discrete solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6384US29D3-T | Higher 2.925V threshold, 150ms timeout, same SOT143-4 package and open-drain output | Designed for +3.3V systems; not suitable for 1.8V monitoring without external scaling | Select only if monitoring 3.3V rail with shorter reset hold time required |
| TLV809KDBZR | 1.6V threshold (±2%), 140ms timeout, push-pull output, SOT-23-3 package | Lacks MR input and automotive temp range; lower accuracy and no manual reset capability | Use where board space is critical and manual reset is unnecessary; verify VCC = +1V validity not required |
Compared with MAX6467US16D7-T, MAX6384US29D3-T offers faster reset release but cannot monitor 1.8V rails, while TLV809KDBZR saves footprint but sacrifices MR functionality, temperature range, and brownout robustness - making MAX6467US16D7-T the only choice for automotive 1.8V systems requiring edge-triggered manual reset and 1200ms timeout.
Availability
MAX6467US16D7-T is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLC modules, and medical infusion pump controllers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6467US16D7-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 high-performance analog and mixed-signal ICs for demanding industrial, automotive, and communications applications.
The MAX6467/MAX6468 family delivers automotive-grade microprocessor supervisory circuits with factory-trimmed thresholds and edge-triggered manual reset, targeting reliability-critical embedded systems where power integrity and deterministic reset timing are non-negotiable.
FAQ
What is the exact reset threshold voltage of MAX6467US16D7-T and how does it vary with temperature?
The MAX6467US16D7-T has a factory-trimmed nominal reset threshold of 1.575V, with ±1.5% tolerance at +25°C. Over the full -40°C to +125°C range, threshold variation is ±3%, meaning the actual trip point stays within 1.528V to 1.622V. This tight specification ensures reliable monitoring of +1.8V supplies even under extreme thermal stress, as confirmed in the device's Electrical Characteristics table and Typical Operating Characteristics plots.
Does MAX6467US16D7-T support manual reset functionality, and how is it implemented?
Yes, MAX6467US16D7-T includes an edge-triggered manual reset (MR) input on Pin 3. A falling edge on MR initiates a fixed 1200ms one-shot reset pulse on the open-drain RESET output, independent of VCC status. Internal 1.5kΩ pullup eliminates external components, and 150ms rising debounce prevents false triggers from switch bounce - all verified in the Pin Description and Applications Information sections of the datasheet.
What is the minimum supply voltage at which MAX6467US16D7-T guarantees valid RESET output behavior?
MAX6467US16D7-T guarantees valid RESET output down to VCC = +1V, meaning the open-drain RESET pin can still properly assert low (sink current) and maintain defined logic states even as the supply collapses. This is explicitly specified in the Absolute Maximum Ratings and Electrical Characteristics tables, and is critical for fail-safe operation during deep brownout events in automotive and medical systems.
What package type and footprint does MAX6467US16D7-T use, and are land patterns available?
MAX6467US16D7-T uses the 4-pin SOT143-4 package (package code U3+1), measuring 3.0mm × 1.7mm × 1.3mm. Official land patterns and outline drawings are published by Maxim Integrated (now Analog Devices) under document number 21-0052 and 90-0183, accessible at maximintegrated.com/packages - confirming compatibility with standard SOT-143 reflow profiles and PCB assembly processes.
How does MAX6467US16D7-T handle short voltage transients on the MR input?
MAX6467US16D7-T rejects MR input glitches as short as 100ns, preventing false resets caused by EMI or contact bounce. This immunity is guaranteed per the Electrical Characteristics table and is enabled by internal digital filtering synchronized to the MR debounce timer. The device responds only to clean falling edges sustained beyond the 100ns window, ensuring robust operation in electrically noisy automotive and industrial environments.
MAX6467US16D7-T 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-T FAQ
1.How can I place an order for MAX6467US16D7-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6467US16D7-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 MAX6467US16D7-T reliable?
The price and inventory of MAX6467US16D7-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6467US16D7-T is usually 5 days.
3.What payment methods are accepted for MAX6467US16D7-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6467US16D7-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6467US16D7-T?
MAX6467US16D7-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6467US16D7-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 MAX6467US16D7-T?
For technical support, including MAX6467US16D7-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6467US16D7-T requirements.
6.How does Aetrix verify that MAX6467US16D7-T is sourced from the original manufacturer or authorized distributors?
All MAX6467US16D7-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 MAX6467US16D7-T meets industry standards.
7.What is the process for return or replacement of MAX6467US16D7-T?
All MAX6467US16D7-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6467US16D7-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 MAX6467US16D7-T part is unused and in its original packaging.
Return procedure for MAX6467US16D7-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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