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Analog Devices Inc./Maxim Integrated MAX20484CATEC/VY+T
- Part No.:
- MAX20484CATEC/VY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
MAX20484CATEC/VY+T.pdf
- Description:
- ASIL-D POWER SYSTEM MONITOR WITH
- Quantity:
- Payment:
- Shipping:
Inventory:2,902
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Product details
Overview
MAX20484CATEC/VY+T from Analog Devices is an ASIL D-compliant power-system monitor SoC with five voltage monitor inputs, ±0.8% threshold accuracy, 25kHz–50MHz clock/fault monitoring, I²C-configurable challenge/response watchdog, and flexible power-sequence recorder - deployed in ADAS domain controllers for real-time power integrity supervision.
For engineers reviewing the MAX20484CATEC/VY+T datasheet, MAX20484CATEC/VY+T pinout, MAX20484CATEC/VY+T application, or MAX20484CATEC/VY+T equivalent, key selection considerations include ASIL D compliance validation, OTP configuration with ECC, dual independent RESET outputs, and side-wettable 3mm × 3mm TQFN-EP packaging for automotive reflow inspection.
Technical Context
The MAX20484CATEC/VY+T integrates five fixed-voltage monitor channels with independently programmable OV/UV thresholds (90–110% of nominal, 0.5% step size), a dedicated CLKIN input supporting 25kHz–50MHz external clock/fault detection, and a windowed watchdog accessible via I²C with challenge/response mode enabled through OTP configuration.
Its Flexible Power Sequence Recorder (FPSR) captures timestamped power-up/power-down events per channel, supports sleep/standby state logging, and stores fault records with CRC-protected I²C interface - all operating across –40°C to +125°C with AEC-Q100 qualification and 150µA active current draw.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.35V to 5.60V - supports direct connection to common automotive rail voltages including 3.3V and 5V domains. |
| Voltage Monitor Inputs | 5 fixed-input channels - enables simultaneous supervision of MCU core, I/O, memory, PHY, and auxiliary rails without external dividers. |
| OV/UV Threshold Accuracy | ±0.8% - ensures precise fault detection within tight safety margins required for ASIL D systems. |
| Clock Monitor Range | 25kHz to 50MHz - covers crystal oscillators, PLL reference clocks, and high-speed serial link timing signals. |
| Operating Current | 150µA - minimizes system-level power overhead during continuous supervision in always-on domains. |
| Power-Down Current | 8µA - allows low-power retention mode during vehicle sleep states while preserving configuration. |
| Package | 3mm × 3mm, 16-pin TQFN-EP with side-wettable flanks - enables automated optical inspection (AOI) of solder joints in automotive PCB assembly. |
Pinout & Package
MAX20484CATEC/VY+T is housed in a 3mm × 3mm, 16-pin TQFN-EP package with exposed thermal pad and side-wettable flanks for solder joint inspection. Pin numbering follows standard TQFN convention with pin 1 marked by dot or chamfer.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Supply Input | Primary power rail input (2.35V–5.60V); decoupling capacitor required adjacent to pin. |
| GND | Ground Reference | Analog/digital ground return; connected to exposed EP for thermal and EMI performance. |
| IN1–IN5 | Voltage Monitor Inputs | Five high-impedance analog inputs for direct connection to monitored rails; no external resistors needed. |
| CLKIN | Clock/Fault Monitor Input | Dedicated AC-coupled input accepting 25kHz–50MHz square-wave or sine signals for clock health verification. |
| SDA/SCL | I²C Interface | Standard bidirectional I²C bus lines supporting 100kHz/400kHz modes; includes CRC protection and programmable address. |
| RESET1/RESET2 | Configurable Reset Outputs | Two open-drain outputs independently programmable for reset assertion timing, polarity, and fault-trigger conditions. |
| INTB | Interrupt Output | Active-low open-drain interrupt signal indicating fault event, watchdog timeout, or FPSR completion. |
Key Features
| Feature | Design Value |
|---|---|
| Flexible Power Sequence Recorder (FPSR) | Stores separate timestamps for power-up and power-down sequences per channel, including sleep/standby transitions - enabling root-cause analysis of boot failures. |
| Challenge/Response Watchdog | I²C-accessible windowed watchdog requiring periodic challenge-response handshake - prevents software lockup without relying on internal timers alone. |
| OTP Configuration with ECC | One-time-programmable memory with error-correcting code and reload capability - ensures immutable safety-critical settings survive field updates and voltage transients. |
| Dual Independent RESET Outputs | Each RESET pin configurable for different assertion conditions (e.g., IN1 UV + CLKIN fault vs. IN3 OV only) - supports hierarchical reset architecture in multi-domain SoCs. |
| CRC-Protected I²C Interface | Hardware CRC generation/checking on all I²C read/write transactions - eliminates undetected data corruption during configuration or status polling. |
Applications
| ADAS Domain Controller Supervision | Autonomous Driving Compute Module |
|---|---|
Use Scenario: Real-time monitoring of 5 voltage rails (CPU core, GPU, memory, SerDes, IO) and reference clock in NVIDIA Orin-based ADAS ECUs. IC Role / Device Role / Timing Role: Centralized power-system monitor providing ASIL D-compliant fault detection, sequence logging, and coordinated reset signaling. Use Value: Enables ISO 26262-compliant failure response with <10ms reset assertion latency and timestamped fault history for diagnostic traceability. | Use Scenario: Supervising heterogeneous compute clusters (ARM Cortex-A78AE + R5F cores) in zonal E/E architectures with shared clock distribution. IC Role / Device Role / Timing Role: Clock/fault monitor and watchdog coordinator ensuring deterministic startup sequencing and runtime clock health verification. Use Value: Eliminates need for discrete clock monitors and multiple reset supervisors - reduces BOM count by 4 components per zone. |
| Remote Sensor Node Power Management | Automotive MCU Safety Monitoring |
Use Scenario: Battery-powered radar/LiDAR sensor nodes requiring ultra-low quiescent current and fault-logging during extended sleep cycles. IC Role / Device Role / Timing Role: Low-power system supervisor managing wake-on-fault, recording brownout events, and validating clock presence before sensor activation. Use Value: Achieves 8µA power-down current while retaining full configuration and fault history - extends battery life >3× versus discrete solutions. | Use Scenario: Monitoring Renesas RH850/U2A or Infineon AURIX TC4x MCUs in safety-critical body control modules. IC Role / Device Role / Timing Role: Dual-reset generator with independent OV/UV thresholds per rail and challenge/response watchdog interfacing via I²C. Use Value: Supports dual-core lockstep validation by asserting RESET1 on core rail fault and RESET2 on clock fault - satisfying ASIL D decomposition requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar power-system monitor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX22510GTE+ | Four-input monitor with integrated isolated I²C, no clock monitor or FPSR; 5.5V max supply. | Targeted at isolated communication interfaces rather than full-domain power supervision. | Select when galvanic isolation is required but clock monitoring and sequence logging are not. |
| TPS659413RWER | Three-input PMIC with integrated buck converters; lacks clock monitor, FPSR, and challenge/response watchdog. | Designed for power conversion + basic monitoring in infotainment SoCs, not ASIL D systems. | Select when DC/DC regulation is needed alongside monitoring, and ASIL D compliance is not mandated. |
Compared with MAX20484CATEC/VY+T, MAX22510GTE+ trades clock/fault monitoring and FPSR for isolated I²C, while TPS659413RWER replaces comprehensive supervision with integrated power conversion - neither provides the ASIL D-compliant, clock-aware, sequence-recording capability of MAX20484CATEC/VY+T.
Availability
MAX20484CATEC/VY+T is available at Aetrix Electronics and suitable for ADAS domain controllers, autonomous driving compute modules, and remote sensor nodes requiring stable component supply under AEC-Q100 and ASIL D design constraints.
Supply support for MAX20484CATEC/VY+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 automotive, industrial, communications, and healthcare markets.
The MAX20484CATEC/VY+T belongs to Analog Devices' automotive safety power-monitoring product line, engineered specifically for ASIL D-compliant power integrity supervision in next-generation ADAS and autonomous driving platforms.
FAQ
What is the operating temperature range of the MAX20484CATEC/VY+T?
The MAX20484CATEC/VY+T operates over –40°C to +125°C ambient temperature and is AEC-Q100 qualified for automotive applications. This range supports placement near high-temperature domains such as radar processors or power inverters. The device maintains ±0.8% voltage threshold accuracy across this full range, validated per AEC-Q100 stress test conditions. MAX20484CATEC/VY+T's thermal design includes an exposed pad for efficient heat dissipation in compact layouts.
Does the MAX20484CATEC/VY+T support ASIL D compliance out of the box?
Yes, the MAX20484CATEC/VY+T is designed to meet ASIL D requirements when used with a supervisory controller, as confirmed in its functional safety documentation. It includes built-in diagnostics such as CRC-protected I²C, OTP with ECC, fault recording, and dual independent RESET outputs - all contributing to FIT rate reduction and diagnostic coverage targets. MAX20484CATEC/VY+T's safety manual specifies integration guidelines for achieving ASIL D in end systems.
How many voltage inputs does the MAX20484CATEC/VY+T monitor, and are they configurable?
The MAX20484CATEC/VY+T monitors exactly five voltage inputs (IN1–IN5), each with independently programmable overvoltage (102.5%–110%) and undervoltage (90%–97.5%) thresholds in 0.5% steps and ±0.8% accuracy. No external resistor dividers are required - all inputs accept direct connection to standard automotive rails (1.0V–5.0V). MAX20484CATEC/VY+T supports universal channel configuration via I²C, allowing dynamic reassignment of fault responses per input.
What clock frequencies can the MAX20484CATEC/VY+T monitor on its CLKIN pin?
The MAX20484CATEC/VY+T accepts clock or fault signals from 25kHz to 50MHz on its dedicated CLKIN pin, covering common automotive timing sources including 27MHz video clocks, 40MHz Ethernet PHY references, and 10–33MHz MCU crystal oscillators. The input is AC-coupled and internally conditioned for jitter tolerance up to ±15% duty cycle variation. MAX20484CATEC/VY+T reports loss-of-clock, frequency deviation, and pulse-width faults via INTB and I²C registers.
Can the MAX20484CATEC/VY+T replace discrete voltage monitors and watchdog ICs in an automotive design?
Yes - the MAX20484CATEC/VY+T integrates five voltage monitors, clock/fault detection, challenge/response watchdog, FPSR, and dual RESET outputs into a single 3mm × 3mm package, reducing component count and PCB area versus discrete alternatives. It eliminates external resistors, RC timing networks, and separate I²C address jumpers. MAX20484CATEC/VY+T's side-wettable TQFN-EP enables AOI-compatible assembly, directly addressing automotive manufacturing requirements.
MAX20484CATEC/VY+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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+T FAQ
1.How can I place an order for MAX20484CATEC/VY+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20484CATEC/VY+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 MAX20484CATEC/VY+T reliable?
The price and inventory of MAX20484CATEC/VY+T 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+T is usually 5 days.
3.What payment methods are accepted for MAX20484CATEC/VY+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20484CATEC/VY+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20484CATEC/VY+T?
MAX20484CATEC/VY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20484CATEC/VY+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 MAX20484CATEC/VY+T?
For technical support, including MAX20484CATEC/VY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20484CATEC/VY+T requirements.
6.How does Aetrix verify that MAX20484CATEC/VY+T is sourced from the original manufacturer or authorized distributors?
All MAX20484CATEC/VY+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 MAX20484CATEC/VY+T meets industry standards.
7.What is the process for return or replacement of MAX20484CATEC/VY+T?
All MAX20484CATEC/VY+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20484CATEC/VY+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 MAX20484CATEC/VY+T part is unused and in its original packaging.
Return procedure for MAX20484CATEC/VY+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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