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Analog Devices Inc./Maxim Integrated MAX20484CATEC/VY+
- Part No.:
- MAX20484CATEC/VY+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
MAX20484CATEC/VY+.pdf
- Description:
- ASIL-D POWER SYSTEM MONITOR WITH
- Quantity:
- Payment:
- Shipping:
Inventory:2,763
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Product details
Overview
MAX20484CATEC/VY+ from Analog Devices is an ASIL D-compliant, highly integrated power-system monitor SoC with up to five voltage-monitor inputs, a 25kHz–50MHz clock/fault monitor, challenge/response watchdog, flexible power-sequence recorder (FPSR), and two independently programmable RESET outputs-designed for automotive ADAS and autonomous driving processing systems.
For engineers reviewing the MAX20484CATEC/VY+ datasheet, MAX20484CATEC/VY+ pinout, MAX20484CATEC/VY+ application, or MAX20484CATEC/VY+ equivalent, key selection considerations include ASIL D compliance, ±0.8% OV/UV threshold accuracy, I²C-configurable FPSR timestamping, clock fault detection range, and side-wettable 3mm × 3mm TQFN-EP package suitability for high-reliability automotive PCBs.
Technical Context
The MAX20484CATEC/VY+ implements a dual-domain monitoring architecture: analog voltage comparators with programmable OV/UV thresholds (90%–110% of nominal, 0.5% step size) feed into a digital diagnostics engine that logs timestamps for power-up/power-down sequences via its Flexible Power Sequence Recorder (FPSR). Each of the five fixed-input channels supports independent threshold programming and fault recording with CRC-protected I²C interface access.
Its clock/fault monitor accepts external clock signals from 25kHz to 50MHz and asserts fault on missing edges or frequency deviation beyond user-defined windows; the challenge/response watchdog supports both simple windowed and cryptographic challenge modes, configurable via OTP with ECC and reload capability-enabling robust safety-critical supervision without external microcontroller intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.35V to 5.60V - supports direct connection to automotive 3.3V or 5V rails without LDO buffering |
| Voltage Monitor Inputs | 5 fixed-input channels - enables simultaneous monitoring of MCU core, I/O, memory, sensor, and auxiliary rails |
| OV/UV Threshold Accuracy | ±0.8% - ensures precise detection of supply deviations critical for ASIL D fault containment |
| Clock Monitor Range | 25kHz to 50MHz - covers crystal oscillators, PLL outputs, and system clocks in ADAS domain controllers |
| Operating Current | 150µA - minimizes quiescent load on always-on domains while maintaining full supervision capability |
| Package | 3mm × 3mm, 16-pin TQFN-EP with side-wettable leads - enables automated optical inspection (AOI) and solder joint reliability verification per AEC-Q100 |
| Temperature Range | −40°C to +125°C - qualified for under-hood and near-sensor placement in automotive environments |
Pinout & Package
MAX20484CATEC/VY+ is housed in a 3mm × 3mm, 16-pin TQFN-EP package with exposed thermal pad and side-wettable leads for enhanced manufacturability and solder-joint inspection in automotive production.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power Supply Input | Primary 2.35V–5.60V supply rail for internal circuitry and analog monitors |
| GND | Ground Reference | Analog and digital ground reference shared across all monitoring functions |
| IN1–IN5 | Voltage Monitor Inputs | Five dedicated analog inputs for fixed-rail voltage supervision (e.g., 1.2V, 1.8V, 3.3V, 5V) |
| CLKIN | Clock/Fault Monitor Input | Accepts external clock signal (25kHz–50MHz); detects missing pulses or frequency deviation |
| SDA / SCL | I²C Interface Pins | Two-wire serial interface for configuration, status readback, and FPSR data retrieval |
| RESET1 / RESET2 | Programmable Reset Outputs | Open-drain outputs independently configurable for reset assertion timing and polarity |
| WDI | Watchdog Input | Optional external watchdog trigger input supporting simple or challenge-response mode |
| WDO | Watchdog Output | Open-drain output asserting fault when watchdog timer expires or challenge fails |
Key Features
| Feature | Design Value |
|---|---|
| Flexible Power Sequence Recorder (FPSR) | Stores separate power-up and power-down timestamps per channel-enables root-cause analysis of boot failures in multi-rail SoC systems |
| Challenge/Response Watchdog | Supports cryptographic challenge exchange over I²C-prevents unauthorized firmware resets and enhances security in OTA-updatable ECUs |
| OTP Configuration with ECC | One-time-programmable registers store critical settings (thresholds, reset delays, watchdog windows) with error-correcting code and reload capability-ensures configuration integrity after power cycles |
| CRC-Protected I²C Interface | Hardware CRC on all I²C transactions prevents misconfiguration due to bus corruption-required for ASIL D diagnostic coverage |
| AEC-Q100 Qualified | Qualified to Grade 0 (−40°C to +150°C ambient) stress test profile-validates robustness for safety-critical automotive placement |
Applications
| ADAS Domain Controller Supervision | Autonomous Driving SoC Monitoring |
|---|---|
Use Scenario: Real-time monitoring of power rails and clock integrity in NVIDIA Orin or Qualcomm Ride platforms during active perception and planning. IC Role / Device Role / Timing Role: Centralized power-system monitor providing ASIL D-compliant fault detection, FPSR logging, and watchdog supervision for multi-core SoCs. Use Value: Enables deterministic fault response and post-mortem analysis of power sequencing anomalies affecting sensor fusion accuracy. | Use Scenario: Supervising voltage stability and clock health across CPU, GPU, NPU, and memory subsystems in L4 autonomous vehicle compute modules. IC Role / Device Role / Timing Role: Safety-critical supervisor IC coordinating reset propagation, clock fault reporting, and power-state transition logging. Use Value: Reduces need for discrete supervisors and improves time-to-diagnosis for intermittent rail collapse or oscillator drift. |
| Remote Radar Sensor Module | Automotive Gateway ECU Power Management |
Use Scenario: Compact 77GHz radar module requiring reliable low-power supervision of 1.2V digital, 3.3V interface, and 5V RF supply rails. IC Role / Device Role / Timing Role: Integrated voltage/clock/sequence monitor enabling single-chip supervision in space-constrained modules. Use Value: Eliminates external RC timers and discrete comparators-reducing BOM count and improving thermal margin at −40°C to +125°C. | Use Scenario: Gateway ECU managing CAN FD, Ethernet, and LIN communication stacks with strict power-state coordination requirements. IC Role / Device Role / Timing Role: Power-system monitor enforcing safe power-up/down sequencing across multiple domain MCUs and transceivers. Use Value: Ensures deterministic wake-up order and prevents bus contention during cold-start and sleep/wake transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar power-system monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX22512GTE+ | Four-channel voltage monitor only; no FPSR, no clock monitor, no challenge/response watchdog; supports only simple windowed watchdog | Limited to non-ASIL D or lower-integration automotive body electronics | Choose MAX22512GTE+ only if clock monitoring, sequence logging, and cryptographic watchdog are not required |
| TPS659413ARSLR | PMIC with integrated buck/boost regulators; voltage monitoring limited to 3 inputs; no FPSR or clock/fault monitor; watchdog is basic windowed type | Targeted at power delivery + basic supervision in infotainment or telematics-not ADAS SoC-level supervision | Choose TPS659413ARSLR when combined regulation and light supervision suffice, but not for ASIL D-compliant standalone monitoring |
Compared with MAX22512GTE+ and TPS659413ARSLR, the MAX20484CATEC/VY+ uniquely delivers ASIL D-compliant, fully configurable power-system supervision-including FPSR timestamping, 25kHz–50MHz clock fault detection, and challenge/response watchdog-making it the only option for high-integrity ADAS domain controller monitoring where discrete function integration and diagnostic coverage are mandatory.
Availability
MAX20484CATEC/VY+ is available at Aetrix Electronics and suitable for ADAS domain controllers, autonomous driving SoC platforms, and remote radar sensor modules requiring stable component supply, long-term automotive lifecycle support, and AEC-Q100 traceability.
Supply support for MAX20484CATEC/VY+ 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 automotive, industrial, communications, and healthcare markets.
The MAX20484CATEC/VY+ belongs to Analog Devices' automotive safety power-supervision product line, engineered specifically to consolidate ASIL D-compliant voltage, clock, and sequence monitoring into a single chip for next-generation ADAS and autonomous driving systems.
FAQ
What is the operating temperature range supported by the MAX20484CATEC/VY+?
The MAX20484CATEC/VY+ is rated for operation from −40°C to +125°C ambient temperature and is AEC-Q100 qualified for automotive use. This range supports placement in demanding locations such as near radar sensors, under-hood ECUs, or within ADAS domain controllers where thermal management is constrained. The MAX20484CATEC/VY+ maintains full ASIL D diagnostic functionality across this entire range without derating.
Does the MAX20484CATEC/VY+ support programmable voltage-monitor thresholds?
Yes, the MAX20484CATEC/VY+ supports programmable overvoltage (OV) thresholds from 102.5% to 110% and undervoltage (UV) thresholds from 97.5% to 90% of nominal rail voltage, with ±0.8% accuracy and 0.5% step resolution. These thresholds are configured via I²C and stored in OTP memory with ECC protection. The MAX20484CATEC/VY+ applies these settings independently per monitored input (IN1–IN5).
How does the Flexible Power Sequence Recorder (FPSR) in the MAX20484CATEC/VY+ function?
The FPSR in the MAX20484CATEC/VY+ autonomously records timestamps for power-up and power-down events on each of the five monitored inputs, storing them separately in nonvolatile memory. It captures edge-triggered transitions with microsecond resolution and supports both simple on/off and complex sleep/standby sequences. The MAX20484CATEC/VY+ allows retrieval of this logged data via I²C for failure root-cause analysis in field-deployed ADAS systems.
Is the MAX20484CATEC/VY+ compatible with standard I²C interfaces?
Yes, the MAX20484CATEC/VY+ features a standard two-wire I²C interface with programmable slave address, CRC-protected transactions, and support for standard-mode (100kHz) and fast-mode (400kHz) speeds. All configuration, status reads, FPSR data retrieval, and watchdog challenge exchanges occur over this interface. The MAX20484CATEC/VY+ also includes glitch filtering and noise immunity features tailored for automotive bus environments.
What safety certifications apply to the MAX20484CATEC/VY+?
The MAX20484CATEC/VY+ is AEC-Q100 qualified (Grade 0) and designed to meet ISO 26262 ASIL D requirements when used with a supervisory controller. Its architecture includes redundant diagnostics, CRC-protected configuration, OTP with ECC, and hardware-enforced fault containment-validated through FMEDA and safety analysis documentation provided by Analog Devices. The MAX20484CATEC/VY+ is not a standalone ASIL D device but achieves ASIL D system-level compliance in validated configurations.
MAX20484CATEC/VY+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-WFQFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- -
- Type:
- Power Supply Monitor
- Number of Voltages Monitored:
- 5
- Voltage - Threshold:
- Adjustable/Selectable
- Output:
- Push-Pull, Push-Pull
- Reset:
- Active Low
- Reset Timeout:
- Adjustable/Selectable
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 16-SW-TQFN (3x3)
MAX20484CATEC/VY+ FAQ
1.How can I place an order for MAX20484CATEC/VY+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20484CATEC/VY+ 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 MAX20484CATEC/VY+ reliable?
The price and inventory of MAX20484CATEC/VY+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20484CATEC/VY+ is usually 5 days.
3.What payment methods are accepted for MAX20484CATEC/VY+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20484CATEC/VY+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20484CATEC/VY+?
MAX20484CATEC/VY+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20484CATEC/VY+ 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 MAX20484CATEC/VY+?
For technical support, including MAX20484CATEC/VY+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20484CATEC/VY+ requirements.
6.How does Aetrix verify that MAX20484CATEC/VY+ is sourced from the original manufacturer or authorized distributors?
All MAX20484CATEC/VY+ 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 MAX20484CATEC/VY+ meets industry standards.
7.What is the process for return or replacement of MAX20484CATEC/VY+?
All MAX20484CATEC/VY+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20484CATEC/VY+, 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 MAX20484CATEC/VY+ part is unused and in its original packaging.
Return procedure for MAX20484CATEC/VY+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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