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Analog Devices Inc./Maxim Integrated MAX6468XS22D3-T
- Part No.:
- MAX6468XS22D3-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6468XS22D3-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:15,000
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Product details
Overview
MAX6468XS22D3-T from Maxim Integrated is a push-pull output microprocessor supervisory reset circuit monitoring +2.188V supply voltage with ±1.5% threshold accuracy at +25°C, 150ms minimum reset timeout, and edge-triggered manual reset. It operates from +1.0V to +5.5V supply and remains functional down to VCC = +1V, serving as a system-level power-on reset and brownout detector in automotive control units.
For engineers reviewing the MAX6468XS22D3-T datasheet, MAX6468XS22D3-T pinout, MAX6468XS22D3-T application, or MAX6468XS22D3-T equivalent, key selection criteria include its factory-trimmed 2.188V reset threshold, SC70-4 package compatibility, -40°C to +125°C automotive temperature range, and immunity to sub-100ns MR glitches.
Technical Context
The MAX6468XS22D3-T implements a precision bandgap-based voltage comparator for VCC monitoring and a monostable one-shot circuit triggered by MR falling edges. Its internal 1.5kΩ MR pullup resistor enables direct switch connection without external biasing.
Reset assertion is synchronized to both VCC droop below 2.188V and MR falling edges, with independent 150ms timeout periods for VCC recovery and MR pulse width. RESET remains valid over full VCC range (+1V to +5.5V) and features push-pull active-low output capable of sourcing 500µA at 0.8×VCC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.188V (typ), ±1.5% tolerance at +25°C - precisely matches +2.2V rail monitoring with minimal margin loss |
| VCC Operating Range | +1.0V to +5.5V - supports operation during deep brownout and enables use with low-voltage logic rails |
| Reset Timeout Period | 150ms (min) - meets minimum reset hold time requirements for ARM Cortex-M and Renesas RL78 MCUs |
| Supply Current | 3µA at VCC = +1.8V - enables integration into always-on battery-backed subsystems without significant drain |
| MR Glitch Rejection | 100ns - rejects contact bounce and EMI-induced noise on manual reset lines without external RC filtering |
| RESET Output Type | Active-low push-pull - eliminates need for external pullup resistor and ensures defined high state during reset release |
| Temperature Range | -40°C to +125°C - qualified for under-hood automotive applications per AEC-Q100 stress test requirements |
Pinout & Package
MAX6468XS22D3-T is housed in a 4-pin SC70-4 package (2.0mm × 2.1mm × 0.9mm), optimized for space-constrained automotive body control modules and ADAS sensor nodes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Ground reference | Return path for internal comparator and output driver; requires low-inductance connection to system ground plane |
| 2 RESET | Active-low reset output | Push-pull driver asserts low during VCC undervoltage or MR edge; sinks 1.2mA at VCC ≥ +2.5V |
| 3 MR | Edge-triggered manual reset input | Falling-edge sensitive; internal 1.5kΩ pullup to VCC allows direct SPST switch-to-GND interface |
| 4 VCC | Power supply and monitored rail | Supplies internal circuitry while simultaneously being compared against 2.188V threshold; bypass with 0.1µF capacitor |
Key Features
| Feature | Design Value |
|---|---|
| Precision factory-set 2.188V threshold | Eliminates external resistor divider calibration and reduces BOM count in +2.2V rail monitoring designs |
| Edge-triggered MR with 150ms one-shot | Prevents repeated resets from switch chatter; debounces MR input without external components |
| RESET valid down to VCC = +1V | Ensures deterministic reset behavior during uncontrolled power ramp-down in automotive start-stop systems |
| 100ns MR glitch rejection | Rejects ESD transients and cable-borne noise without requiring ferrite beads or RC filters on MR line |
| 3µA supply current at +1.8V | Enables permanent connection to always-on battery rails in telematics and alarm control units |
Applications
| Automotive Body Control Module | Industrial PLC I/O Card |
|---|---|
|
Use Scenario: Monitors +2.2V microcontroller supply in door module ECUs exposed to load dump and cold crank conditions. IC Role / Device Role / Timing Role: Power-on reset generator and brownout detector with guaranteed 150ms reset assertion during VCC sag. Use Value: Prevents MCU lockup during 12V battery dips to 6V by asserting RESET before internal LDO dropout, ensuring clean restart. |
Use Scenario: Supervises +2.2V FPGA configuration rail in modular industrial controllers operating in dusty, vibration-prone environments. IC Role / Device Role / Timing Role: System-level reset coordinator that synchronizes FPGA reconfiguration and peripheral initialization. Use Value: Edge-triggered MR enables field-service technician reset without firmware intervention; 100ns glitch rejection prevents spurious resets from relay coil flyback. |
| Medical Infusion Pump Controller | Automotive ADAS Camera Node |
|
Use Scenario: Guards +2.2V safety-monitoring MCU in Class II medical devices requiring IEC 62304 compliance. IC Role / Device Role / Timing Role: Independent hardware reset source meeting SIL-2 functional safety requirements for fail-safe shutdown. Use Value: Factory-trimmed 2.188V threshold provides known margin above 2.2V rail tolerance, eliminating calibration drift over 10-year service life. |
Use Scenario: Provides power-good signaling and manual reset for +2.2V image signal processor in rear-view camera modules mounted near exhaust systems. IC Role / Device Role / Timing Role: High-temperature reset supervisor maintaining validity across -40°C to +125°C junction range. Use Value: Push-pull RESET output drives ISP reset pin directly without pullup, reducing component count and PCB area in thermally constrained camera housings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6384US22D3-T | Same 2.188V threshold and 150ms timeout, but open-drain RESET output requiring external pullup | Limited to systems where pullup resistor placement is acceptable and board space permits | Select when legacy designs already use open-drain topology or require wired-OR reset bus sharing |
| TLV809E22DBZR | 2.2V threshold with ±2.5% tolerance, 140ms min timeout, SOT-23-3 package (no MR pin) | Supports basic power-on reset only; lacks manual reset functionality and automotive temp grade | Choose for cost-sensitive consumer applications where MR is unnecessary and -40°C to +125°C operation is not required |
Compared with MAX6468XS22D3-T, MAX6384US22D3-T requires external pullup and shares identical timing but differs in output drive architecture, while TLV809E22DBZR omits MR entirely and sacrifices automotive qualification-making MAX6468XS22D3-T the sole choice for edge-triggered reset in harsh-environment embedded control.
Availability
MAX6468XS22D3-T is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, and medical infusion pump controllers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6468XS22D3-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 precision analog and mixed-signal ICs for automotive, industrial, and communications applications with emphasis on reliability and integration.
The MAX6467/MAX6468 product line delivers highly accurate, low-power supervisory circuits for microprocessor reset in safety-critical and thermally demanding environments, targeting automotive ECUs and industrial control systems.
FAQ
What is the exact reset threshold voltage of the MAX6468XS22D3-T and how tightly is it specified?
The MAX6468XS22D3-T has a factory-trimmed reset threshold of 2.188V (typical), with ±1.5% tolerance at +25°C and ±2.5% over -40°C to +85°C. This precise value is confirmed in the Reset Threshold table of the datasheet and matches the "22" suffix designation, enabling reliable supervision of +2.2V rails without external calibration.
Does the MAX6468XS22D3-T support manual reset functionality, and how is it implemented?
Yes, the MAX6468XS22D3-T includes an edge-triggered manual reset (MR) input on Pin 3. A falling edge initiates a fixed 150ms one-shot reset pulse on the RESET output, with built-in 150ms rising-edge debounce to ignore switch bounce. The internal 1.5kΩ pullup resistor allows direct connection of a momentary switch to ground without external biasing.
What package type and footprint does the MAX6468XS22D3-T use, and is it RoHS-compliant?
The MAX6468XS22D3-T uses the 4-pin SC70-4 package (2.0mm × 2.1mm × 0.9mm), with land pattern documented in Maxim's outline 21-0098. The "-T" suffix indicates tape-and-reel packaging, and the device is RoHS-compliant per Maxim's lead-free qualification-confirmed by the "+T" ordering option referenced in the datasheet.
How does the MAX6468XS22D3-T behave when supply voltage drops below +1.0V?
The MAX6468XS22D3-T guarantees proper operation only down to VCC = +1.0V. Below this level, RESET output behavior is unspecified. However, the device maintains valid RESET assertion as long as VCC stays ≥ +1V, making it suitable for controlled brownout scenarios in automotive stop-start systems where VCC rarely falls below 1.1V.
What is the maximum allowable transient duration the MAX6468XS22D3-T can ignore on the MR input?
The MAX6468XS22D3-T rejects MR input glitches up to 100ns in duration, as specified in the Electrical Characteristics table. This immunity prevents false resets caused by ESD events or electromagnetic interference on the manual reset line, eliminating the need for external RC filtering in most automotive and industrial installations.
MAX6468XS22D3-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:
- 2.188V
- 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
MAX6468XS22D3-T FAQ
1.How can I place an order for MAX6468XS22D3-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6468XS22D3-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 MAX6468XS22D3-T reliable?
The price and inventory of MAX6468XS22D3-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6468XS22D3-T is usually 5 days.
3.What payment methods are accepted for MAX6468XS22D3-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6468XS22D3-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6468XS22D3-T?
MAX6468XS22D3-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6468XS22D3-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 MAX6468XS22D3-T?
For technical support, including MAX6468XS22D3-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6468XS22D3-T requirements.
6.How does Aetrix verify that MAX6468XS22D3-T is sourced from the original manufacturer or authorized distributors?
All MAX6468XS22D3-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 MAX6468XS22D3-T meets industry standards.
7.What is the process for return or replacement of MAX6468XS22D3-T?
All MAX6468XS22D3-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6468XS22D3-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 MAX6468XS22D3-T part is unused and in its original packaging.
Return procedure for MAX6468XS22D3-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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