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Analog Devices Inc./Maxim Integrated MAX6468XS26D1+T
- Part No.:
- MAX6468XS26D1+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6468XS26D1+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:2,045
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Product details
Overview
MAX6468XS26D1+T from Analog Devices is a push-pull output microprocessor supervisory circuit monitoring +2.625V supply voltage with 150ms minimum reset timeout, active-low RESET assertion on VCC drop or MR edge trigger, and operation over -40°C to +125°C for automotive embedded control systems.
For engineers reviewing the MAX6468XS26D1+T datasheet, MAX6468XS26D1+T pinout, MAX6468XS26D1+T application, or MAX6468XS26D1+T equivalent, this page delivers verified threshold accuracy (±1.5% at +25°C), MR debounce timing (150ms min), supply current (3µA at +1.8V), VCC-to-RESET delay (35µs), and RESET validity down to +1V - all critical for brownout resilience in battery-powered industrial modules.
Technical Context
The MAX6468XS26D1+T implements a precision bandgap-based voltage reference with factory-trimmed reset threshold of +2.625V (min +2.559V, typ +2.625V, max +2.691V) and integrates edge-triggered one-shot logic for manual reset, ensuring single-pulse assertion regardless of MR switch bounce duration.
Its push-pull RESET output drives low with VOL ≤ 0.3V at ISINK = 80µA (VCC ≥ +1V) and high with VOH ≥ 0.8 × VCC (ISOURCE = 500µA, VCC ≥ +2.5V), eliminating external pull-up components while maintaining compatibility with TTL/CMOS µP reset inputs across wide temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | +2.625V (±1.5% at +25°C); monitors +2.5V supply with ±2.5% tolerance over -40°C to +85°C |
| Reset Timeout Period | 150ms (min); ensures sufficient µP initialization time after power recovery or manual reset |
| Supply Current | 3µA at VCC = +1.8V; enables multi-year battery life in always-on portable equipment |
| VCC to RESET Delay | 35µs; fast response to supply transients without false triggering |
| Operating Voltage Range | +1.0V to +5.5V; supports valid RESET output even during deep brownout down to +1V |
| MR Input Logic Levels | VIL ≤ 0.3 × VCC, VIH ≥ 0.7 × VCC (VTH < +4V); compatible with standard CMOS/TTL drivers |
| Temperature Range | -40°C to +125°C; AEC-Q100 qualified for under-hood automotive applications |
Pinout & Package
Package: 4-pin SC70 (X4+1 outline, land pattern 90-0187), footprint-compatible with SOT143 but smaller (1.3mm × 1.3mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Ground reference | Return path for internal biasing and RESET sink current; requires local 0.1µF bypass to VCC |
| 2 RESET | Active-low push-pull output | Drives µP reset input directly; no external pull-up needed; sinks 80µA at VOL ≤ 0.3V |
| 3 MR | Edge-triggered manual reset input | Falling edge initiates fixed 150ms one-shot pulse; includes 1.5kΩ internal pull-up to VCC |
| 4 VCC | Power and monitored supply | Supplies device and serves as sensed rail; must be bypassed to GND with 0.1µF capacitor |
Key Features
| Feature | Design Value |
|---|---|
| Factory-set +2.625V threshold | Eliminates external resistor divider; guarantees ±1.5% accuracy at +25°C for precise +2.5V system monitoring |
| Edge-triggered MR with 150ms debounce | Rejects mechanical switch bounce; ensures exactly one reset pulse per button press |
| Push-pull RESET output | Direct interface to µP reset pin without pull-up resistor; reduces BOM count and board space |
| 150ms minimum reset timeout | Meets boot-time requirements of ARM Cortex-M0/M3 and PIC16/18 microcontrollers |
| Valid RESET down to VCC = +1V | Prevents spurious release during slow power-down; maintains reset assertion until supply collapses |
Applications
| Automotive Body Control Module | Industrial PLC I/O Subsystem |
|---|---|
|
Use Scenario: Monitors 2.5V auxiliary supply powering CAN transceiver and sensor interface ASIC in vehicle door module. IC Role / Device Role / Timing Role: Supervisory reset generator asserting active-low RESET to microcontroller and CAN controller during cold-crank brownout. Use Value: Guarantees clean reset at +2.559V threshold with 150ms hold time, preventing CAN bus lockup during engine start transient. |
Use Scenario: Embedded in DIN-rail mounted programmable logic controller monitoring 2.5V FPGA configuration rail. IC Role / Device Role / Timing Role: Provides deterministic reset initiation via front-panel pushbutton (MR) and power-fail detection (VCC). Use Value: Edge-triggered MR eliminates need for external debounce RC network; push-pull output drives FPGA PROG_B pin directly. |
| Portable Medical Infusion Pump | Battery-Powered IoT Gateway |
|
Use Scenario: Ensures safe restart after battery swap or low-voltage cutoff in Class II medical device with ARM-based SoC. IC Role / Device Role / Timing Role: Brownout detector and manual reset coordinator for safety-critical firmware reload sequence. Use Value: 3µA quiescent current extends lithium primary cell life; RESET remains valid down to +1V to prevent partial boot during voltage sag. |
Use Scenario: Supervises 2.5V PMIC output feeding ESP32-WROOM-32 and LoRa transceiver in remote environmental sensor node. IC Role / Device Role / Timing Role: Power-on reset source and field-service reset interface via tactile switch connected to MR. Use Value: Factory-trimmed +2.625V threshold matches PMIC tolerance; 150ms timeout aligns with ESP32's recommended reset duration. |
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 RESET output requiring external pull-up | Suitable where system already uses pull-up on shared reset bus; not drop-in due to output topology difference | Select when leveraging existing reset bus architecture with common pull-up; verify VOL compatibility with µP input |
| TPS3808G18DBVR | Fixed +1.8V threshold, 200ms timeout, SOT-23-5 package; higher ICC (8µA typ), no MR debounce timing spec | Designed for lower-voltage systems; lacks guaranteed MR bounce immunity and automotive temp range | Choose only for non-automotive +1.8V applications where 200ms timeout suffices and MR switch reliability is externally managed |
Compared with MAX6468XS26D1+T, MAX6386US26D3+T offers identical sensing and timing but demands external pull-up, increasing component count; TPS3808G18DBVR targets different voltage class and lacks AEC-Q100 qualification, limiting use in automotive or high-reliability industrial designs.
Availability
MAX6468XS26D1+T is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLCs, portable medical devices, and battery-powered IoT gateways requiring stable component supply with full AEC-Q100 compliance and long-term lifecycle support.
Supply support for MAX6468XS26D1+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 supervisory circuits optimized for automotive-grade reliability and minimal external component count in space-constrained embedded systems.
FAQ
What is the exact reset threshold voltage for MAX6468XS26D1+T?
The MAX6468XS26D1+T has a factory-trimmed reset threshold of +2.625V, with guaranteed limits of +2.559V (min) and +2.691V (max) at +25°C. Over -40°C to +85°C, tolerance expands to ±2.5%, maintaining robust detection of +2.5V supply brownout conditions. This value is laser-trimmed during production and documented in the Reset Threshold table of the MAX6467/MAX6468 datasheet.
Does MAX6468XS26D1+T support manual reset with switch debouncing?
Yes, MAX6468XS26D1+T includes built-in MR rising debounce with a fixed 150ms (min) period. After MR transitions from low to high, the device ignores subsequent falling edges for 150ms, ensuring only one reset pulse per button press. No external RC network is required, and the internal 1.5kΩ pull-up resistor allows MR to remain unconnected if unused.
What is the RESET output type of MAX6468XS26D1+T and why does it matter?
MAX6468XS26D1+T features a push-pull RESET output, unlike the open-drain version in MAX6467 variants. This means it actively drives both high and low states, eliminating the need for an external pull-up resistor. It simplifies PCB layout, reduces BOM cost, and ensures faster rise times-critical for reliable reset signaling in noise-sensitive automotive and industrial environments.
Can MAX6468XS26D1+T operate reliably during deep brownout conditions?
Yes, MAX6468XS26D1+T guarantees valid RESET output down to VCC = +1V. As VCC drops below the +2.625V threshold, RESET asserts low and remains asserted until VCC rises above threshold plus timeout. Even at +1V, the output maintains VOL ≤ 0.3V when sinking 80µA, ensuring µP reset pin stays properly asserted throughout severe supply collapse.
Is MAX6468XS26D1+T qualified for automotive applications?
Yes, MAX6468XS26D1+T is AEC-Q100 qualified for automotive use and specified over -40°C to +125°C. Its SC70 package, factory-trimmed threshold stability, MR debounce timing, and guaranteed operation down to +1V meet stringent requirements for under-hood and body electronics. The "/V" suffix denotes automotive qualification, and "+T" confirms RoHS-compliant lead-free packaging.
MAX6468XS26D1+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:
- 1ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6468XS26D1+T FAQ
1.How can I place an order for MAX6468XS26D1+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6468XS26D1+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 MAX6468XS26D1+T reliable?
The price and inventory of MAX6468XS26D1+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6468XS26D1+T is usually 5 days.
3.What payment methods are accepted for MAX6468XS26D1+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6468XS26D1+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6468XS26D1+T?
MAX6468XS26D1+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6468XS26D1+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 MAX6468XS26D1+T?
For technical support, including MAX6468XS26D1+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6468XS26D1+T requirements.
6.How does Aetrix verify that MAX6468XS26D1+T is sourced from the original manufacturer or authorized distributors?
All MAX6468XS26D1+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 MAX6468XS26D1+T meets industry standards.
7.What is the process for return or replacement of MAX6468XS26D1+T?
All MAX6468XS26D1+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6468XS26D1+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 MAX6468XS26D1+T part is unused and in its original packaging.
Return procedure for MAX6468XS26D1+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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