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Analog Devices Inc./Maxim Integrated MAX6468US26D3+T
- Part No.:
- MAX6468US26D3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6468US26D3+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:4,304
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Product details
Overview
MAX6468US26D3+T from Analog Devices is a push-pull, active-low microprocessor supervisory reset circuit in SOT143-4 package, monitoring +2.625V supply with ±2.5% threshold accuracy over -40°C to +125°C, featuring 150ms minimum reset timeout and edge-triggered manual reset for embedded automotive control systems.
For engineers reviewing the MAX6468US26D3+T datasheet, MAX6468US26D3+T pinout, MAX6468US26D3+T application, or MAX6468US26D3+T equivalent, this page delivers verified electrical parameters, automotive-grade thermal behavior, MR debounce timing, RESET output drive capability, and factory-trimmed voltage threshold validation - all confirmed for the exact SOT143-packaged D3-timed variant.
Technical Context
The MAX6468US26D3+T implements a precision bandgap-based voltage reference with internal comparator and one-shot timing logic to generate deterministic reset pulses on VCC brownout or MR falling edge. Its push-pull RESET output drives low without external pullup, supporting direct interface to µP reset inputs.
It uses an internal 1.5kΩ MR pullup resistor and ignores MR glitches shorter than 100ns, with a 150ms rising-edge debounce window (tDEB) to suppress switch bounce. Reset assertion remains valid down to VCC = +1V, enabling robust operation during deep brownout conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | +2.559V (min), +2.625V (typ), +2.691V (max) - factory-trimmed for +2.625V nominal supply monitoring |
| VCC Operating Range | +1.2V to +5.5V - supports wide input range while maintaining reset validity down to +1V |
| Reset Timeout Period | 150ms (min), 225ms (typ), 300ms (max) - fixed D3-suffix delay ensures µP reset hold time compliance |
| Supply Current | 3µA at +1.8V, 4µA at +2.5V - ultra-low ICC enables battery-powered system longevity |
| MR Input Logic Levels | VIL ≤ 0.3×VCC (VTH < +4V), VIH ≥ 0.7×VCC - compatible with TTL/CMOS and open-drain drivers |
| RESET Output Type | Active-low push-pull - sinks 3.2mA at +4.5V, eliminates need for external pullup resistor |
| Temperature Range | -40°C to +125°C - AEC-Q100 qualified for automotive under-hood and industrial environments |
Pinout & Package
MAX6468US26D3+T is housed in a 4-pin SOT143-4 surface-mount package (outline 21-0052), measuring 2.9mm × 1.6mm × 1.1mm, with gull-wing leads and RoHS-compliant matte tin plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - GND | Ground Reference | Primary return path for internal circuitry and RESET output sink current |
| 2 - RESET | Active-Low Reset Output | Push-pull driver asserts low during VCC brownout or MR edge; holds low for 150–300ms |
| 3 - MR | Edge-Triggered Manual Reset Input | Falling edge initiates one-shot reset; internal 1.5kΩ pullup allows NC if unused |
| 4 - VCC | Power Input & Voltage Monitor | Supplies device and serves as monitored rail; bypass with 0.1µF capacitor to GND |
Key Features
| Feature | Design Value |
|---|---|
| Factory-Trimmed +2.625V Threshold | ±2.5% tolerance over -40°C to +85°C ensures accurate brownout detection for 2.6V–2.7V rails |
| Edge-Triggered MR with Debounce | Ignores MR bounces within 150ms after rising edge, eliminating false resets from mechanical switches |
| 150ms Minimum Reset Timeout | Guarantees sufficient µP reset hold time per JEDEC JESD8-12 and ARM Cortex boot requirements |
| Push-Pull RESET Output | Drives low directly into µP reset pin without external components; supports 3.2mA sink at +4.5V |
| Immunity to Short VCC Transients | Rejects glitches ≤100ns duration, preventing spurious resets during digital switching noise |
Applications
| Automotive Body Control Module | Industrial PLC I/O Card |
|---|---|
|
Use Scenario: Monitors 2.6V power rail supplying CAN transceiver and microcontroller in door module. IC Role / Device Role / Timing Role: Supervisory reset generator asserting active-low signal to µP and transceiver during ignition cycling. Use Value: Ensures deterministic reset during cold-crank voltage sag (down to +2.559V) and validates operation to +1V VCC. |
Use Scenario: Provides reliable reset to ARM-based controller on DIN-rail mounted I/O expansion board. IC Role / Device Role / Timing Role: Voltage monitor and manual reset initiator with 150ms timeout for firmware recovery. Use Value: Eliminates external RC network; push-pull output interfaces directly to reset pin without pullup. |
| Medical Infusion Pump Controller | Automotive ADAS Camera ECU |
|
Use Scenario: Guards safety-critical ARM Cortex-M4 against undervoltage during battery swap or low-charge events. IC Role / Device Role / Timing Role: Brownout detector and MR-initiated hard reset source with glitch immunity. Use Value: 100ns MR glitch rejection prevents accidental reset from ESD-induced noise on long PCB traces. |
Use Scenario: Monitors 2.6V core supply for image signal processor in rear-view camera module. IC Role / Device Role / Timing Role: Automotive-grade reset supervisor meeting AEC-Q100 Grade 0 requirements. Use Value: Valid operation across -40°C to +125°C ambient enables under-hood deployment without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6384US26D3+T | Same SOT143-4 package, identical +2.625V threshold and D3 timeout, but open-drain RESET output | Requires external pullup resistor; unsuitable where push-pull drive is needed for low-impedance reset signaling | Select MAX6468US26D3+T when direct µP reset pin drive without pullup is required. |
| TLV803EB26DBZR | Lower quiescent current (0.5µA), same +2.63V threshold, but only 140ms min timeout and no MR debounce | Lacks edge-triggered MR with 150ms debounce; not suitable for noisy mechanical switch interfaces | Choose MAX6468US26D3+T for automotive/manual-reset reliability where switch bounce immunity is critical. |
Compared with MAX6384US26D3+T and TLV803EB26DBZR, MAX6468US26D3+T uniquely combines push-pull RESET, factory-trimmed +2.625V threshold, 150ms timeout, and MR debounce in a single AEC-Q100-qualified SOT143 package - enabling drop-in replacement only where push-pull drive and robust manual reset are design requirements.
Availability
MAX6468US26D3+T is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, medical infusion pumps, and ADAS camera ECUs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6468US26D3+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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.
The MAX6467/MAX6468 product line delivers precision, low-power, automotive-qualified supervisory circuits for microprocessor reset management - designed specifically for harsh-environment embedded systems demanding guaranteed brownout detection and glitch-immune manual reset.
FAQ
What is the exact reset threshold voltage of MAX6468US26D3+T?
The MAX6468US26D3+T has a factory-trimmed reset threshold of +2.625V (typical), with guaranteed minimum of +2.559V and maximum of +2.691V at +25°C. Over the full -40°C to +85°C range, threshold tolerance is ±2.5%, ensuring reliable detection of brownout on 2.6V nominal supplies. This value is permanently laser-trimmed and does not require external calibration.
Does MAX6468US26D3+T support manual reset with switch debouncing?
Yes, MAX6468US26D3+T features built-in MR rising-edge debounce with a 150ms (min) window. After MR transitions from low to high, subsequent falling edges are ignored for 150–300ms - effectively suppressing mechanical switch bounce. No external RC network or firmware debouncing is required, making it ideal for automotive and industrial pushbutton interfaces.
What is the RESET output configuration of MAX6468US26D3+T?
MAX6468US26D3+T provides an active-low push-pull RESET output, capable of sinking up to 3.2mA at +4.5V VCC. Unlike open-drain variants, it requires no external pullup resistor and directly drives standard µP reset inputs. The output remains valid down to VCC = +1V, ensuring deterministic reset assertion even during severe brownout.
Is MAX6468US26D3+T qualified for automotive applications?
Yes, MAX6468US26D3+T is AEC-Q100 qualified (Grade 0) and specified for -40°C to +125°C operation. It meets automotive reliability standards including HTOL, TC, and ESD testing. The "/V" suffix denotes automotive qualification, and the "+T" indicates RoHS-compliant lead-free packaging - both present in the full orderable part number.
How does the D3 suffix affect timing behavior in MAX6468US26D3+T?
The D3 suffix in MAX6468US26D3+T specifies a 150ms minimum reset timeout period for both VCC brownout recovery and MR-initiated reset. Typical timeout is 225ms, with maximum 300ms. This timing is factory-programmed and temperature-stable across -40°C to +125°C, satisfying JEDEC and ARM boot timing requirements for most microcontrollers.
MAX6468US26D3+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- TO-253-4, TO-253AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.625V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 150ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-143-4
MAX6468US26D3+T FAQ
1.How can I place an order for MAX6468US26D3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6468US26D3+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 MAX6468US26D3+T reliable?
The price and inventory of MAX6468US26D3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6468US26D3+T is usually 5 days.
3.What payment methods are accepted for MAX6468US26D3+T?
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4.How is shipping managed for MAX6468US26D3+T?
MAX6468US26D3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6468US26D3+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 MAX6468US26D3+T?
For technical support, including MAX6468US26D3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6468US26D3+T requirements.
6.How does Aetrix verify that MAX6468US26D3+T is sourced from the original manufacturer or authorized distributors?
All MAX6468US26D3+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 MAX6468US26D3+T meets industry standards.
7.What is the process for return or replacement of MAX6468US26D3+T?
All MAX6468US26D3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6468US26D3+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 MAX6468US26D3+T part is unused and in its original packaging.
Return procedure for MAX6468US26D3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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