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Analog Devices Inc./Maxim Integrated MAX6468XS16D3-T
- Part No.:
- MAX6468XS16D3-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6468XS16D3-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:4,801
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Product details
Overview
MAX6468XS16D3-T from Maxim Integrated is a push-pull output microprocessor supervisory reset circuit in SC70-4 package, monitoring +1.8V supply with factory-trimmed 1.575V reset threshold (±1.5% at +25°C), 150ms minimum reset timeout, and edge-triggered manual reset. It ensures reliable power-on reset and brownout recovery in automotive-grade embedded systems operating from -40°C to +125°C.
For engineers reviewing the MAX6468XS16D3-T datasheet, MAX6468XS16D3-T pinout, MAX6468XS16D3-T application, or MAX6468XS16D3-T equivalent, key selection criteria include its 1.575V threshold tolerance, push-pull active-low RESET output driving capability, MR debounce timing, VCC = +1V operation limit, and automotive temperature qualification.
Technical Context
The MAX6468XS16D3-T implements a precision bandgap-based voltage monitor with hysteresis and an edge-triggered one-shot timer for manual reset. Its internal 1.5kΩ MR pullup resistor enables direct switch connection without external components, and the push-pull RESET output delivers 0.8×VCC high-level drive at 500µA sink current.
Reset assertion occurs when VCC falls below 1.575V or on MR falling edge, with guaranteed 150ms minimum timeout for both VCC and MR events. The device remains functional down to VCC = +1V and rejects transients ≤100ns, ensuring immunity to short supply glitches during system operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 1.575V ±1.5% at +25°C; monitors +1.8V supply with margin for tolerance and drift |
| Reset Timeout Period | 150ms (min); ensures µP reset hold time meets boot ROM requirements |
| Supply Current | 3µA at VCC = +1.8V; enables ultra-low-power battery-backed operation |
| Operating Voltage Range | +1.0V to +5.5V; supports valid RESET output down to VCC = +1V |
| Output Type | Active-low push-pull; eliminates need for external pullup resistor |
| Temperature Range | -40°C to +125°C; qualified for automotive under-hood and industrial control environments |
| MR Debounce Period | 150ms (min); prevents false resets from mechanical switch bounce |
Pinout & Package
MAX6468XS16D3-T is housed in a 4-pin SC70-4 package (2.0mm × 2.1mm × 0.9mm), optimized for space-constrained PCB layouts in portable and automotive modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Ground reference | Return path for all internal circuitry; requires low-inductance connection to system ground plane |
| 2 RESET | Active-low reset output | Push-pull driver capable of sourcing 500µA at 0.8×VCC; directly interfaces with µP reset input |
| 3 MR | Edge-triggered manual reset input | Falling-edge sensitive; internal 1.5kΩ pullup allows momentary switch-to-GND connection without external components |
| 4 VCC | Power and monitored supply | Supplies device and serves as monitored rail; bypass with 0.1µF capacitor to GND for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Precision factory-set threshold | 1.575V ±1.5% at +25°C enables accurate +1.8V supply monitoring without calibration |
| Edge-triggered MR with one-shot | Guarantees single 150ms RESET pulse per MR button press, eliminating latch-up risk |
| Push-pull RESET output | Eliminates external pullup resistor, reducing BOM count and board area in high-volume designs |
| VCC = +1V operation limit | Ensures deterministic reset behavior during deep brownout, critical for fail-safe shutdown |
| Automotive temperature range | -40°C to +125°C qualification supports deployment in engine control units and ADAS modules |
Applications
| Automotive Engine Control Unit | Industrial PLC Module |
|---|---|
Use Scenario: Monitors 1.8V core supply in ECU microcontroller during cold cranking and load dump conditions. IC Role / Device Role / Timing Role: Supervisory reset generator asserting active-low RESET until VCC stabilizes above 1.575V for ≥150ms. Use Value: Prevents spurious MCU execution during unstable battery voltage, meeting ISO 16750-2 transient immunity requirements. | Use Scenario: Provides power-on and brownout reset for ARM-based PLC CPU running real-time control firmware. IC Role / Device Role / Timing Role: Edge-triggered MR input accepts operator-initiated reset; push-pull RESET drives FPGA configuration logic. Use Value: Eliminates external pullup resistor and guarantees 150ms reset hold time, simplifying compliance with IEC 61131-2 safety timing. |
| Medical Infusion Pump | DSL Modem Power Management |
Use Scenario: Ensures safe shutdown and restart of motor controller ASIC when 1.8V digital supply dips during battery transition. IC Role / Device Role / Timing Role: Monitors VCC and asserts RESET low until supply recovers and holds for 150ms; operates down to VCC = +1V. Use Value: Meets IEC 62304 Class C software safety requirement for deterministic reset during power anomaly. | Use Scenario: Generates clean power-on reset for DSL PHY and DSP subsystems after AC/DC converter stabilization. IC Role / Device Role / Timing Role: Factory-trimmed 1.575V threshold matches 1.8V rail tolerance; MR input enables field service reset via front-panel button. Use Value: Reduces component count vs. discrete RC reset circuits while improving temperature stability across -40°C to +85°C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6386US29D3-T | Same SC70-4 package, 2.925V threshold, 150ms timeout; open-drain output requires external pullup | Designed for +3.3V systems; not suitable for +1.8V monitoring without level-shifting | Select only if higher threshold and open-drain interface match system architecture |
| TPS3808G15DBVR | 1.5V threshold, 200ms timeout, SOT-23-5 package; 1.6µA quiescent current at 1.8V | Includes watchdog timer; lacks edge-triggered MR debounce logic | Choose when watchdog functionality is required and MR debounce is implemented externally |
Compared with MAX6468XS16D3-T, MAX6386US29D3-T requires external pullup and targets higher supply rails, while TPS3808G15DBVR adds watchdog capability but increases pin count and removes integrated MR debouncing-making MAX6468XS16D3-T optimal for cost-sensitive, space-constrained +1.8V automotive reset applications.
Availability
MAX6468XS16D3-T is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLC modules, medical infusion pumps, and DSL modem power management requiring stable component supply across extended temperature ranges.
Supply support for MAX6468XS16D3-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 is a semiconductor company specializing in analog and mixed-signal ICs for power, sensing, connectivity, and security applications.
The MAX6467/MAX6468 product line delivers precision voltage-monitoring and reset generation for microprocessor-based systems, targeting automotive, industrial, and medical applications demanding high reliability and extended temperature operation.
FAQ
What is the exact reset threshold voltage of MAX6468XS16D3-T and how is it trimmed?
The MAX6468XS16D3-T has a factory-trimmed reset threshold of 1.575V, with ±1.5% tolerance at +25°C and ±2.5% over -40°C to +85°C. This value is laser-trimmed during production to match the "16" suffix in the part number and is specified in the Reset Threshold table of the datasheet. The threshold is designed specifically to monitor +1.8V supplies with adequate margin for variation and temperature drift.
Does MAX6468XS16D3-T require an external pullup resistor on the RESET pin?
No, MAX6468XS16D3-T does not require an external pullup resistor because it features a push-pull active-low RESET output. Unlike the open-drain MAX6467 variant, the MAX6468 version internally drives both high and low states, enabling direct connection to microprocessor reset inputs without additional components-reducing BOM cost and PCB footprint.
What is the minimum VCC voltage at which MAX6468XS16D3-T guarantees valid RESET output operation?
MAX6468XS16D3-T guarantees valid RESET output operation down to VCC = +1V. Below this voltage, the internal circuitry may no longer assert or deassert RESET reliably. This specification ensures deterministic reset behavior during deep brownout conditions common in automotive and battery-powered systems before complete power collapse.
How does the manual reset (MR) input of MAX6468XS16D3-T handle switch bounce?
The MR input of MAX6468XS16D3-T incorporates a built-in 150ms rising-edge debounce period (tDEB). After MR transitions from low to high, subsequent falling edges within that window are ignored, ensuring only one 150ms RESET pulse per button press. This eliminates need for external RC filtering or firmware debouncing in applications using mechanical pushbuttons.
Is MAX6468XS16D3-T qualified for automotive applications and what temperature range does it support?
Yes, MAX6468XS16D3-T is qualified for automotive applications and operates over the full -40°C to +125°C junction temperature range. It is packaged in SC70-4 and specified for use in engine control units, ADAS modules, and infotainment systems where extended temperature performance and AEC-Q100 stress testing compliance are required.
MAX6468XS16D3-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-82A, SOT-343
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 1.575V
- 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
MAX6468XS16D3-T FAQ
1.How can I place an order for MAX6468XS16D3-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6468XS16D3-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 MAX6468XS16D3-T reliable?
The price and inventory of MAX6468XS16D3-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6468XS16D3-T is usually 5 days.
3.What payment methods are accepted for MAX6468XS16D3-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6468XS16D3-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6468XS16D3-T?
MAX6468XS16D3-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6468XS16D3-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 MAX6468XS16D3-T?
For technical support, including MAX6468XS16D3-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6468XS16D3-T requirements.
6.How does Aetrix verify that MAX6468XS16D3-T is sourced from the original manufacturer or authorized distributors?
All MAX6468XS16D3-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 MAX6468XS16D3-T meets industry standards.
7.What is the process for return or replacement of MAX6468XS16D3-T?
All MAX6468XS16D3-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6468XS16D3-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 MAX6468XS16D3-T part is unused and in its original packaging.
Return procedure for MAX6468XS16D3-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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