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Analog Devices Inc./Maxim Integrated MAX16132B33A+T
- Part No.:
- MAX16132B33A+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-8
- Datasheet:
-
MAX16132B33A+T.pdf
- Description:
- LOW-VOLTAGE, PRECISION, SINGLE/D
- Quantity:
- Payment:
- Shipping:
Inventory:3,150
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Product details
Overview
MAX16132B33A+T from Analog Devices is a quad-input, precision voltage supervisor IC designed for automotive ADAS systems. It monitors four independent supply rails (IN1–IN4) for undervoltage and overvoltage faults within ±1% threshold accuracy over −40°C to +125°C, features factory-programmed 3.3V nominal input thresholds on all channels, ±4% window tolerance with 0.5% hysteresis, and a 20µs minimum reset timeout period. Its active-low open-drain RESET1/RESET2 outputs support functional safety-critical power sequencing in multivoltage ASICs.
For engineers reviewing the MAX16132B33A+T datasheet, MAX16132B33A+T pinout, MAX16132B33A+T application, or MAX16132B33A+T equivalent, key selection criteria include quad-channel window monitoring capability, AEC-Q100 qualification, SOT23-8 package compatibility, and guaranteed reset assertion down to VDD = 1.07V - critical for low-voltage automotive microcontroller supervision.
Technical Context
The MAX16132B33A+T implements independent dual-reset logic: RESET1 asserts when IN1 or IN2 falls outside its 3.3V ±4% window (3.168V–3.432V), while RESET2 asserts when IN3 or IN4 falls outside the same window. All inputs use matched internal references and trim circuitry enabling ±1% total threshold accuracy across temperature.
Its architecture integrates four precision comparators, a shared reset timeout timer (20µs min), UVLO protection (1.50V typ), and open-drain outputs requiring external pullups. Immunity to short monitored-supply transients is achieved via internal filtering and comparator hysteresis calibrated to 0.5% of VIN_NOM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Input Voltage | 3.3V per channel (factory-programmed); enables direct monitoring of common I/O and core rails in ADAS SoCs. |
| Window Tolerance | ±4%; sets UV threshold at 3.168V and OV threshold at 3.432V - tight enough for 3.3V ±5% system compliance. |
| Threshold Accuracy | ±1% over −40°C to +125°C; ensures reliable fault detection without derating in under-hood environments. |
| Reset Timeout | 20µs minimum; supports fast-recovery systems like radar processors requiring sub-100µs reset hold times. |
| Supply Current | 12.5µA typical; allows integration into always-on domains without compromising battery drain budgets. |
| VDD Operating Range | 1.71V to 5.5V; compatible with 1.8V, 2.5V, 3.3V, and 5V system supplies and brownout conditions. |
| Output Type | Active-low open-drain; permits wired-OR reset bus configuration and flexible voltage-level translation. |
Pinout & Package
MAX16132B33A+T is housed in an 8-pin SOT23 package (outline 21-0078, land pattern 90-0176), optimized for space-constrained automotive PCBs. Thermal resistance θJA = 196°C/W on a four-layer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VDD | Power supply input | Must be bypassed with 0.1µF capacitor to GND; UVLO ensures correct reset state above 1.50V. |
| 2 - IN1 | Monitoring input 1 | 3.3V nominal rail monitor; triggers RESET1 if voltage falls below 3.168V or rises above 3.432V. |
| 3 - IN2 | Monitoring input 2 | 3.3V nominal rail monitor; shares RESET1 assertion logic with IN1 (OR function). |
| 4 - GND | Ground reference | Common return for all analog and digital circuitry; must be low-impedance for threshold stability. |
| 5 - IN3 | Monitoring input 3 | 3.3V nominal rail monitor; triggers RESET2 if voltage falls below 3.168V or rises above 3.432V. |
| 6 - IN4 | Monitoring input 4 | 3.3V nominal rail monitor; shares RESET2 assertion logic with IN3 (OR function). |
| 7 - RESET2 | Active-low open-drain output 2 | Asserted during IN3/IN4 fault; requires external pullup to VDD or another logic rail. |
| 8 - RESET1 | Active-low open-drain output 1 | Asserted during IN1/IN2 fault; electrically isolated from RESET2 for independent reset domain control. |
Key Features
| Feature | Design Value |
|---|---|
| Quad-input window supervision | Monitors four independent rails with two logically grouped reset outputs - reduces component count vs. discrete supervisors. |
| AEC-Q100 qualified | Rated for automotive −40°C to +125°C operation with full reliability testing - meets ISO 26262 ASIL-B readiness requirements. |
| Factory-programmed thresholds | No external resistors needed; eliminates BOM cost and layout sensitivity associated with adjustable supervisors. |
| Immunity to short transients | Internal filtering rejects <20µs supply glitches - prevents false resets during load-switching or ESD events. |
| Guaranteed reset state down to VDD = 1.07V | Ensures deterministic behavior during deep brownout, supporting fail-safe MCU shutdown sequences. |
Applications
| ADAS Sensor Fusion Unit | Multivoltage Automotive ASIC |
|---|---|
Use Scenario: Simultaneous monitoring of 3.3V camera interface, 1.8V image processor core, 1.2V memory I/O, and 5.0V power management rails in a surround-view ECU. IC Role / Device Role / Timing Role: Quad-input supervisor providing dual independent reset signals (RESET1 for sensor interface domain, RESET2 for processing domain) with synchronized timeout. Use Value: Eliminates need for four separate supervisors; reduces PCB area by >60% and enables coordinated power-up sequencing across heterogeneous voltage domains. | Use Scenario: Supervision of FPGA-configured power rails in a domain controller where 3.3V I/O, 1.8V transceiver, 1.2V logic, and 2.5V analog supplies must meet strict startup timing windows. IC Role / Device Role / Timing Role: Precision window detector ensuring all rails remain within ±4% of nominal during dynamic load changes, with 20µs reset assertion guaranteeing immediate fault response. Use Value: Prevents partial configuration failures by holding reset until all monitored rails stabilize within tolerance - critical for FPGA bitstream integrity. |
| Automotive Infotainment Head Unit | Server-Side Automotive Gateway |
Use Scenario: Monitoring 3.3V display interface, 1.1V GPU core, 1.8V audio codec, and 5.0V USB-C PD rail in a head unit with thermal throttling and hot-swap requirements. IC Role / Device Role / Timing Role: Fault-detection engine triggering domain-specific resets (e.g., display subsystem only) without affecting main CPU domain. Use Value: Enables graceful degradation - e.g., disabling HDMI output while maintaining navigation functionality during transient overvoltage on display rail. | Use Scenario: Supervising 3.3V CAN FD transceiver, 1.2V Ethernet PHY, 1.8V security module, and 5.0V power delivery in a vehicle-to-cloud gateway operating at ambient temperatures up to 105°C. IC Role / Device Role / Timing Role: High-accuracy supervisor ensuring communication interfaces remain powered within spec during engine cranking-induced dips. Use Value: Maintains CAN FD bus arbitration integrity by preventing transceiver reset during brief 3.3V sags - avoids network reinitialization delays. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV809E33DBVR | Single-channel 3.3V supervisor; no window monitoring, no overvoltage detection, fixed 200ms timeout. | Suitable only for basic undervoltage reset - cannot replace quad-window supervision or dual-reset logic of MAX16132B33A+T. | Select only when monitoring a single rail with no OV requirement and longer timeout acceptable. |
| ADM1266ACPZ | 16-channel PMBus-configurable supervisor; supports custom thresholds, sequencing, and telemetry but requires I²C host and firmware. | Targeted at high-end server/industrial systems needing programmability and diagnostics - overkill for cost-sensitive automotive ADAS. | Choose when system-level sequencing, fault logging, or dynamic threshold adjustment is required; not drop-in. |
Compared with TLV809E33DBVR and ADM1266ACPZ, the MAX16132B33A+T uniquely delivers quad-channel ±4% window supervision in a pin-compatible SOT23-8 package with 20µs timeout - enabling compact, deterministic, AEC-Q100-compliant reset control without software overhead or external components.
Availability
MAX16132B33A+T is available at Aetrix Electronics and suitable for automotive ADAS systems, multivoltage ASIC power sequencing, and server-side automotive gateways requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX16132B33A+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 consumer markets with precision signal chain solutions.
The MAX16132–MAX16135 product line was engineered specifically for automotive functional safety applications - delivering high-accuracy, multi-rail voltage supervision with AEC-Q100 qualification and guaranteed parametric performance over −40°C to +125°C.
FAQ
What is the nominal input voltage configuration for MAX16132B33A+T?
The MAX16132B33A+T is factory-programmed for 3.3V nominal input voltage on all four monitoring inputs (IN1–IN4). This configuration corresponds to suffix "33" in the part number and enables direct supervision of standard automotive I/O rails without external resistor networks or calibration.
Does MAX16132B33A+T support overvoltage detection?
Yes, MAX16132B33A+T provides true window supervision - detecting both undervoltage and overvoltage faults. With ±4% tolerance, its overvoltage threshold is 3.432V and undervoltage threshold is 3.168V for the 3.3V nominal input, and it asserts RESET1 or RESET2 accordingly.
What is the reset timeout period for MAX16132B33A+T?
The MAX16132B33A+T has a factory-set minimum reset timeout period of 20µs, indicated by suffix "A". This short timeout enables rapid system recovery after transient faults while maintaining sufficient hold time for microcontroller initialization sequences.
Is MAX16132B33A+T AEC-Q100 qualified?
Yes, MAX16132B33A+T is AEC-Q100 qualified for Grade 0 (−40°C to +125°C), as confirmed in the official Analog Devices ordering information. This qualification covers stress testing, reliability validation, and failure mechanism analysis required for automotive under-hood applications.
How are the reset outputs configured on MAX16132B33A+T?
MAX16132B33A+T features dual active-low open-drain reset outputs: RESET1 responds to faults on IN1 or IN2 (OR logic), and RESET2 responds to faults on IN3 or IN4 (OR logic). Both require external pullup resistors and share the same 20µs timeout period.
MAX16132B33A+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-8
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3.3V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 1ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-8
MAX16132B33A+T FAQ
1.How can I place an order for MAX16132B33A+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16132B33A+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 MAX16132B33A+T reliable?
The price and inventory of MAX16132B33A+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16132B33A+T is usually 5 days.
3.What payment methods are accepted for MAX16132B33A+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16132B33A+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16132B33A+T?
MAX16132B33A+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16132B33A+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 MAX16132B33A+T?
For technical support, including MAX16132B33A+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16132B33A+T requirements.
6.How does Aetrix verify that MAX16132B33A+T is sourced from the original manufacturer or authorized distributors?
All MAX16132B33A+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 MAX16132B33A+T meets industry standards.
7.What is the process for return or replacement of MAX16132B33A+T?
All MAX16132B33A+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX16132B33A+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 MAX16132B33A+T part is unused and in its original packaging.
Return procedure for MAX16132B33A+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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