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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:4,952
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Product details
Overview
The MAX6468XS22D3+T from Analog Devices is a push-pull output microprocessor supervisory reset circuit in SC70-4 package, monitoring +2.188V supply with ±2.5% threshold accuracy over -40°C to +125°C, asserting active-low RESET for 150ms (min) on VCC drop or MR edge trigger, and used in automotive power management systems requiring AEC-Q100-compliant voltage supervision.
For engineers reviewing the MAX6468XS22D3+T datasheet, MAX6468XS22D3+T pinout, MAX6468XS22D3+T application, or MAX6468XS22D3+T equivalent, this page delivers verified reset threshold, MR debounce timing, push-pull drive capability, VCC-to-RESET delay, and automotive-grade thermal performance - all confirmed from Analog Devices' official MAX6467/MAX6468 datasheet Rev 8 (July 2021).
Technical Context
This device implements an edge-triggered, one-shot manual reset architecture with independent MR rising debounce (150–300ms) and fixed timeout periods for both VCC brownout (150ms min) and MR assertion (150ms min). Its internal 1.5kΩ MR pullup eliminates external components while ensuring immunity to switch bounce.
The push-pull RESET output delivers VOH ≥ 0.8×VCC at ISOURCE = 500µA (VCC ≥ +2.5V), VOL ≤ 0.3V at ISINK = 1.2mA, and remains valid down to VCC = +1V - enabling robust reset signaling during deep brownout conditions without external pulldown networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | +2.188V (typ), ±2.5% over -40°C to +85°C - precisely matches +2.5V rail with margin for tolerance stack-up |
| Reset Timeout Period | 150ms (min), 300ms (max) - ensures reliable µP initialization across ARM Cortex-M and RISC-V boot sequences |
| Supply Current | 3µA at VCC = +1.8V - enables multi-year battery life in always-on automotive sensors |
| MR Debounce Period | 150ms (min) - suppresses mechanical switch bounce without external RC filtering |
| VCC to RESET Delay | 35µs - fast response to transient drops, preventing false escapes from reset state |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive ECUs and industrial motor drives |
| Output Type | Active-low push-pull - eliminates need for external pullup resistor, simplifies PCB layout |
Pinout & Package
Package: SC70-4 (4-pin, 1.25mm × 0.85mm × 0.55mm body, 0.65mm pitch), RoHS-compliant lead-free (+T suffix), AEC-Q100 qualified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Ground reference | Return path for internal biasing and RESET sink current; must be low-impedance connection to system ground plane |
| 2 RESET | Active-low reset output | Push-pull driver capable of sourcing 500µA / sinking 1.2mA; asserts low during VCC brownout or MR edge trigger |
| 3 MR | Manual reset input | Edge-triggered, internally pulled up to VCC (1.5kΩ); falling edge initiates one-shot 150ms RESET pulse |
| 4 VCC | Power and monitored supply | Input voltage range +1.0V to +5.5V; simultaneously powers device and serves as monitored rail for reset generation |
Key Features
| Feature | Design Value |
|---|---|
| Precision factory-trimmed threshold | +2.188V (typ) with ±2.5% tolerance over -40°C to +85°C - eliminates calibration overhead in production test |
| Edge-triggered MR with one-shot timing | Falling-edge sensitive with 150ms fixed MR timeout and 150ms rising-edge debounce - prevents multiple resets from switch chatter |
| Push-pull RESET output | VOH ≥ 0.8×VCC at 500µA source, VOL ≤ 0.3V at 1.2mA sink - removes external pullup, reduces BOM count and board area |
| Low quiescent current | 3µA at +1.8V - supports >10-year shelf life in battery-backed telematics modules |
| VCC-operated validity | RESET remains functional down to VCC = +1V - ensures deterministic reset assertion during deep undervoltage events |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC I/O Module |
|---|---|
Use Scenario: Monitors 2.5V logic supply in engine ECU exposed to load dump and cold-crank transients. IC Role / Device Role / Timing Role: Supervisory reset generator asserting active-low signal to MCU upon VCC dip below +2.188V or technician-initiated MR pulse. Use Value: AEC-Q100 qualification and -40°C to +125°C operation ensure reliability in under-hood environments; 150ms timeout aligns with ISO 26262 ASIL-B boot timing requirements. |
Use Scenario: Provides power-on and fault-reset supervision for FPGA-based digital I/O expansion in factory automation controllers. IC Role / Device Role / Timing Role: Voltage monitor and manual reset interface with push-pull output driving FPGA PROG_B pin directly. Use Value: Eliminates external pullup resistor (vs. open-drain alternatives), reducing component count; 3µA supply current extends uptime in energy-harvesting sensor nodes. |
| Medical Infusion Pump Controller | DSL Modem Power Management |
Use Scenario: Ensures safe restart after power interruption in Class II medical device with isolated 2.5V microcontroller supply. IC Role / Device Role / Timing Role: Brownout detector and operator-reset initiator with guaranteed RESET validity down to VCC = +1V. Use Value: Prevents unsafe partial initialization during marginal VCC recovery; ±2.5% threshold accuracy meets IEC 60601-1 voltage supervision tolerances. |
Use Scenario: Supervises +2.5V PHY supply in DSL line card subjected to AC-line noise and hot-swap events. IC Role / Device Role / Timing Role: Reset supervisor with edge-triggered MR for field-service reset and VCC dropout detection. Use Value: Immunity to <100ns glitches (per MR glitch rejection spec) avoids spurious resets; SC70-4 footprint saves space in dense line-card layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6384US29D3+T | Open-drain RESET output, same SC70-4 package, +2.925V threshold, 150ms timeout | Requires external pullup resistor; less suitable where board space or BOM count is constrained | Select when legacy compatibility with MAX6384-based designs is required and push-pull drive is unnecessary |
| TLV803EB22DBVR | Push-pull output, SOT-23-3 package, +2.2V threshold, 200ms min timeout, 0.5µA ICC | Smaller 3-pin footprint but lacks MR input - no manual reset capability | Choose when manual reset is not needed and ultra-low current (<1µA) is prioritized over MR functionality |
Compared with MAX6468XS22D3+T, MAX6384US29D3+T requires external pullup and offers higher threshold, while TLV803EB22DBVR omits MR entirely but achieves lower ICC - making MAX6468XS22D3+T optimal for space-constrained automotive/industrial designs needing both precision 2.188V supervision and edge-triggered manual reset.
Availability
MAX6468XS22D3+T is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLC modules, medical infusion pump controllers, DSL modem power management, and GPS tracking devices requiring stable component supply with AEC-Q100 compliance and extended temperature support.
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
Analog Devices is a global semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision sensing, power management, and connectivity.
The MAX6467/MAX6468 product line delivers automotive-grade microprocessor supervisory circuits with factory-trimmed thresholds, edge-triggered manual reset, and push-pull/open-drain output flexibility - designed specifically for mission-critical power monitoring in harsh-environment electronics.
FAQ
What is the exact reset threshold voltage of the MAX6468XS22D3+T?
The MAX6468XS22D3+T has a factory-trimmed nominal reset threshold of +2.188V, with ±2.5% accuracy over -40°C to +85°C and ±3% over +85°C to +125°C. This value is confirmed in the "Reset Threshold" table of the Analog Devices MAX6467/MAX6468 datasheet Rev 8, corresponding to suffix "22" in the part number. The MAX6468XS22D3+T maintains this threshold stability across its full automotive temperature range.
Does the MAX6468XS22D3+T require an external pullup resistor on the RESET pin?
No, the MAX6468XS22D3+T features a push-pull RESET output, eliminating the need for an external pullup resistor. It can source up to 500µA (VOH ≥ 0.8×VCC) and sink up to 1.2mA (VOL ≤ 0.3V) while asserting active-low reset. This is a key distinction from the open-drain MAX6467 variant and is explicitly documented in the "Electrical Characteristics" section of the MAX6468XS22D3+T datasheet.
What is the MR input behavior during switch bounce, and how does the MAX6468XS22D3+T handle it?
The MAX6468XS22D3+T incorporates a 150ms (min) MR rising debounce period that ignores falling edges occurring within that window after MR transitions from low to high. This hardware-level debouncing ensures only the first MR falling edge triggers a one-shot 150ms RESET pulse, preventing multiple assertions from mechanical switch bounce - a feature confirmed in the "Detailed Description" and "Timing Diagram" sections of the official datasheet.
Can the MAX6468XS22D3+T operate reliably below 1.8V supply voltage?
Yes, the MAX6468XS22D3+T operates from VCC = +1.0V to +5.5V and guarantees valid RESET output down to VCC = +1V. Its supply current is specified as low as 3µA at +1.8V, and the device remains functional - including accurate threshold detection and timed reset assertion - throughout this extended range. This capability is validated in the "Absolute Maximum Ratings" and "Electrical Characteristics" tables of the datasheet.
Is the MAX6468XS22D3+T qualified for automotive applications?
Yes, the MAX6468XS22D3+T is AEC-Q100 qualified for automotive use, as stated in the "Features" section and "Ordering Information" table of the MAX6467/MAX6468 datasheet. It is specified over the full automotive temperature range (-40°C to +125°C), packaged in RoHS-compliant SC70-4, and carries the "/V" automotive grade designation in its full ordering code (e.g., MAX6468XS22D3/V+T).
MAX6468XS22D3+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:
- 2.188V
- 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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