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Analog Devices Inc./Maxim Integrated MAX6468XS26D3+T
- Part No.:
- MAX6468XS26D3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6468XS26D3+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:1,361
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Product details
Overview
MAX6468XS26D3+T from Analog Devices is a push-pull output microprocessor supervisory reset circuit in SC70-4 package, monitoring +2.625V supply (±1.5% at +25°C) with 150ms minimum reset timeout, active-low RESET assertion on VCC drop or MR edge trigger, and guaranteed operation down to VCC = +1V - used in automotive control modules and industrial embedded systems requiring AEC-Q100-compliant voltage supervision.
For engineers reviewing the MAX6468XS26D3+T datasheet, MAX6468XS26D3+T pinout, MAX6468XS26D3+T application, or MAX6468XS26D3+T equivalent, key selection criteria include factory-trimmed 2.625V threshold accuracy, 150ms reset timeout stability over -40°C to +125°C, push-pull output drive capability, MR edge-triggered one-shot behavior, and immunity to sub-100ns glitches on manual reset input.
Technical Context
The MAX6468XS26D3+T implements a precision bandgap-based voltage reference with comparator and edge-triggered monostable logic for MR input, delivering deterministic reset timing without external components. Its internal 1.5kΩ MR pullup resistor enables direct switch-to-GND connection without external biasing.
Reset assertion occurs when VCC falls below 2.625V (min 2.559V, max 2.691V at +25°C), with propagation delay under 35µs and reset timeout tightly bounded between 150ms and 300ms across temperature. The push-pull output drives high to 0.8×VCC at 500µA load, eliminating need for external pullup.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.625V (typ), ±1.5% at +25°C; monitors +2.6V supply rails with tight tolerance for reliable brownout detection |
| Reset Timeout Period | 150ms (min) to 300ms (max); ensures µP reset duration meets ARM Cortex-M and PIC MCU requirements |
| Supply Voltage Range | +1.2V to +5.5V; supports operation during deep brownout while maintaining valid RESET down to VCC = +1V |
| Supply Current | 3µA at VCC = +1.8V; enables multi-year battery life in always-on sensor nodes |
| MR Glitch Rejection | 100ns; rejects mechanical switch bounce and EMI-induced noise on manual reset line |
| Operating Temperature | -40°C to +125°C; qualified for under-hood automotive and industrial control environments |
| Output Type | Active-low push-pull; eliminates external pullup resistor and reduces BOM count vs open-drain alternatives |
Pinout & Package
MAX6468XS26D3+T uses a 4-pin SC70-4 package (2.0mm × 2.1mm × 0.9mm), optimized for space-constrained PCB layouts in portable and automotive electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Ground reference | Return path for all internal circuitry; must be connected to low-impedance system ground plane |
| 2 RESET | Active-low reset output | Push-pull driver asserts low during VCC brownout or MR falling edge; sinks up to 3.2mA at VCC ≥ +4.5V |
| 3 MR | Manual reset input | Edge-triggered; internal 1.5kΩ pullup allows direct SPST switch-to-GND connection; ignores bounce within 150ms debounce window |
| 4 VCC | Power and monitored supply | 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 2.625V threshold | Eliminates external resistor divider and calibration, reducing design cycle time and test cost |
| Edge-triggered MR with one-shot timing | Ensures single, fixed-duration reset pulse per button press regardless of switch hold time or contact chatter |
| 150ms minimum reset timeout | Meets JEDEC JESD78B requirement for minimum reset assertion time in microcontroller applications |
| Push-pull RESET output | Drives high actively without external pullup, simplifying layout and improving noise margin on reset bus |
| Valid RESET down to VCC = +1V | Guarantees clean reset release during power-down sequences where supply decays slowly |
Applications
| Automotive Engine Control Unit | Industrial PLC I/O Module |
|---|---|
Use Scenario: Monitors 2.6V auxiliary rail powering CAN transceiver and sensor interface ASIC in engine bay. IC Role / Device Role / Timing Role: Supervisory reset generator asserting active-low RESET to microcontroller and peripheral ICs during voltage sag. Use Value: AEC-Q100 qualification and -40°C to +125°C operation ensure reliability in under-hood thermal cycling; 100ns MR glitch rejection prevents false resets from ignition noise. | Use Scenario: Supervises 2.6V FPGA configuration supply in DIN-rail mounted programmable logic controller. IC Role / Device Role / Timing Role: Voltage monitor and manual reset coordinator providing synchronized reset to FPGA, ADC, and isolation drivers. Use Value: Push-pull output eliminates pullup resistor, reducing component count and board area; 150ms timeout matches FPGA configuration timing requirements. |
| Medical Infusion Pump Controller | Smart Energy Meter MCU Subsystem |
Use Scenario: Watches 2.6V real-time clock and motor driver supply in battery-backed infusion pump. IC Role / Device Role / Timing Role: Brownout detector and operator-initiated reset source ensuring safe shutdown and restart sequence. Use Value: 3µA quiescent current extends battery life during standby; RESET validity to VCC = +1V guarantees controlled power-down before supply collapse. | Use Scenario: Monitors 2.6V metrology ADC and secure MCU supply in ANSI C12.22-compliant smart meter. IC Role / Device Role / Timing Role: System-level reset supervisor coordinating cold start and firmware update recovery. Use Value: Factory-trimmed 2.625V threshold eliminates calibration step in production test; SC70-4 footprint enables compact dual-sided PCB layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6386US26D3+T | Same SC70-4 package, identical 2.625V threshold and 150ms timeout, but open-drain output requiring external pullup | Suitable where system already uses shared reset bus with pullup; not drop-in due to output topology mismatch | Select when leveraging existing open-drain reset architecture or needing pin compatibility with legacy MAX6386 designs |
| TLV803EB26DBZR | 2.63V threshold, 140ms min timeout, SOT-23-3 package, 1.8V–6V supply range, no MR input | Lacks manual reset functionality; intended for simple power-on reset only, not interactive system recovery | Choose only if manual reset is unnecessary and board space permits SOT-23-3; not functionally equivalent for MR-dependent use cases |
Compared with MAX6468XS26D3+T, MAX6386US26D3+T requires external pullup and lacks push-pull drive strength, while TLV803EB26DBZR omits MR entirely - making MAX6468XS26D3+T the sole option supporting both precise 2.625V supervision and robust edge-triggered manual reset in SC70-4.
Availability
MAX6468XS26D3+T is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLC modules, medical infusion pumps, smart energy meters, and battery-powered IoT edge devices requiring stable component supply across extended temperature ranges.
Supply support for MAX6468XS26D3+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.
The MAX6467/MAX6468 product line delivers precision voltage supervision with edge-triggered manual reset for automotive-grade and industrial embedded systems where reliability under voltage transients and thermal stress is critical.
FAQ
What is the exact reset threshold voltage of the MAX6468XS26D3+T?
The MAX6468XS26D3+T has a factory-trimmed nominal reset threshold of 2.625V, with guaranteed limits of 2.559V (min) and 2.691V (max) at +25°C. Over the full -40°C to +125°C operating range, threshold tolerance expands to ±3%, maintaining accuracy for automotive and industrial applications where supply rails drift with temperature.
Does the MAX6468XS26D3+T require an external pullup resistor on the RESET pin?
No, the MAX6468XS26D3+T features a push-pull RESET output and does not require an external pullup resistor. Unlike open-drain variants such as the MAX6467, this version actively drives HIGH to 0.8×VCC at 500µA load, simplifying schematic design and improving noise immunity on the reset bus without additional components.
What is the function of the MR pin on the MAX6468XS26D3+T?
The MR pin on the MAX6468XS26D3+T is an edge-triggered manual reset input. A falling edge initiates a fixed 150ms–300ms one-shot RESET pulse, independent of how long MR remains low. Internal 1.5kΩ pullup allows direct connection to a normally-open momentary switch, and 150ms rising-edge debounce prevents false triggers from mechanical bounce.
Is the MAX6468XS26D3+T qualified for automotive applications?
Yes, the MAX6468XS26D3+T is AEC-Q100 qualified for automotive use and specified over -40°C to +125°C. Its SC70-4 package, precision 2.625V threshold, and immunity to 100ns glitches make it suitable for engine control, body electronics, and ADAS subsystems where voltage supervision must survive harsh thermal and electrical environments.
How does the MAX6468XS26D3+T behave when VCC drops below +1V?
The MAX6468XS26D3+T guarantees proper operation only down to VCC = +1V. Below this level, the device ceases to function and RESET state is undefined. For applications requiring valid reset signaling down to 0V, external circuitry (e.g., pulldown resistor on RESET) is needed - though this approach applies only to push-pull outputs like those in MAX6468XS26D3+T, not open-drain variants.
MAX6468XS26D3+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-82A, SOT-343
- 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:
- SC-70-4
MAX6468XS26D3+T FAQ
1.How can I place an order for MAX6468XS26D3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6468XS26D3+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 MAX6468XS26D3+T reliable?
The price and inventory of MAX6468XS26D3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6468XS26D3+T is usually 5 days.
3.What payment methods are accepted for MAX6468XS26D3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6468XS26D3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6468XS26D3+T?
MAX6468XS26D3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6468XS26D3+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 MAX6468XS26D3+T?
For technical support, including MAX6468XS26D3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6468XS26D3+T requirements.
6.How does Aetrix verify that MAX6468XS26D3+T is sourced from the original manufacturer or authorized distributors?
All MAX6468XS26D3+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 MAX6468XS26D3+T meets industry standards.
7.What is the process for return or replacement of MAX6468XS26D3+T?
All MAX6468XS26D3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6468XS26D3+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 MAX6468XS26D3+T part is unused and in its original packaging.
Return procedure for MAX6468XS26D3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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