My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6722AUTSDD3+T
- Part No.:
- MAX6722AUTSDD3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6722AUTSDD3+T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,321
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6722AUTSDD3+T from Maxim Integrated is a dual-supply ultra-low-voltage microprocessor supervisory circuit in SOT23-6 package, monitoring VCC1 (primary) and VCC2 (secondary) supplies with factory-trimmed reset thresholds of 4.625V (VTH1) and 3.075V (VTH2), 280ms minimum reset timeout, and push-pull active-low RST output. It ensures reliable system reset during brownout in telecom power systems and industrial controllers.
For engineers reviewing the MAX6722AUTSDD3+T datasheet, MAX6722AUTSDD3+T pinout, MAX6722AUTSDD3+T application, or MAX6722AUTSDD3+T equivalent, key selection criteria include dual-rail voltage monitoring capability, guaranteed reset validity down to VCC = 0.8V, push-pull RST output referenced to VCC1, and -40°C to +125°C operation for harsh-environment embedded designs.
Technical Context
The MAX6722AUTSDD3+T integrates two independent voltage comparators with internal 20ppm/°C tempco references, a programmable 280ms reset timeout timer, and a push-pull reset driver referenced to VCC1. Its dual-supply architecture enables simultaneous monitoring of core (e.g., 3.3V) and I/O (e.g., 1.8V) rails without external components.
It features manual-reset input (MR) with 50kΩ internal pullup to VCC1, glitch rejection of 100ns, and MR-to-RST delay of 200ns. The device guarantees valid reset assertion even when either VCC1 or VCC2 drops to 0.8V - critical for low-power brownout detection in battery-backed systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Reset Threshold | 4.625V (typ), factory-trimmed - sets precise brownout detection point for primary supply (e.g., 5V or 3.3V rail) |
| VCC2 Reset Threshold | 3.075V (typ), factory-trimmed - monitors secondary supply (e.g., 3.3V I/O rail) independently |
| Reset Timeout Period | 280ms (min) - ensures μP completes full initialization before release from reset |
| Supply Current | 15µA (typ) at 3.6V - enables long battery life in portable equipment |
| Operating Temperature | -40°C to +125°C - qualified for automotive under-hood and industrial control environments |
| Reset Output Type | Push-pull, active-low RST - eliminates need for external pullup resistor; VOH = 0.8×VCC1 |
| Reset Valid Down To | VCC1 or VCC2 ≥ 0.8V - guarantees functional reset assertion during deep brownout |
Pinout & Package
SOT23-6 package (package code U6+1), 1.6mm × 2.9mm footprint, 1.1mm height, thermal resistance θJA = 115°C/W on multilayer board.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Active-low push-pull reset output referenced to VCC1; asserts when VCC1/VCC2 fall below thresholds or MR is pulled low |
| 2 | GND | System ground reference for all internal comparators and logic |
| 3 | MR | Active-low manual-reset input with 50kΩ internal pullup to VCC1; 1µs minimum pulse width required |
| 4 | VCC2 | Secondary supply input (0.8V–5.5V); powers internal circuitry when > VCC1 and sets VCC2 threshold comparator reference |
| 5 | VCC1 | Primary supply input (0.8V–5.5V); powers device and sets primary reset threshold; defines RST output high level |
| 6 | WDI | Watchdog input; left unconnected disables watchdog; 35s startup period followed by 1.12s normal timeout |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneous VCC1 and VCC2 supervision with separate factory-trimmed thresholds avoids single-point failure in multirail systems |
| Guaranteed reset validity at 0.8V | Ensures deterministic reset behavior during severe brownout - no risk of floating or undefined RST state |
| Push-pull RST output | Eliminates external pullup resistor, reduces BOM count, and improves noise immunity vs. open-drain alternatives |
| 280ms minimum reset timeout | Provides sufficient hold time for complex μP boot sequences including PLL lock, memory initialization, and peripheral configuration |
| Manual-reset input with internal pullup | Enables field service reset via momentary switch without external biasing components or PCB routing overhead |
Applications
| Telecom Power Management | Industrial PLC Controllers |
|---|---|
Use Scenario: Monitoring redundant 48V DC-DC converter outputs and 3.3V/1.8V FPGA I/O/core rails in base station power modules. IC Role / Device Role / Timing Role: Dual-supply supervisor asserting reset if either converter output sags or FPGA supply falls below spec. Use Value: Prevents corrupted firmware execution during partial power loss; 280ms timeout accommodates slow-start DC-DC converters. |
Use Scenario: Ensuring safe startup and fault recovery in DIN-rail mounted programmable logic controllers operating in factory-floor environments. IC Role / Device Role / Timing Role: Supervising 24V system rail and 5V logic supply while providing MR interface for maintenance-mode reset. Use Value: -40°C to +125°C rating supports wide ambient range; push-pull RST drives optocoupler inputs directly without pullup. |
| Automotive Infotainment Head Units | Medical Diagnostic Equipment |
Use Scenario: Monitoring 12V battery-derived 5V main rail and 3.3V processor core supply in vehicle infotainment systems subject to load-dump transients. IC Role / Device Role / Timing Role: Brownout detector with 0.8V reset validity ensuring reset remains asserted during cranking events. Use Value: Immunity to short VCC transients prevents spurious resets during engine start; MR pin enables technician-initiated diagnostics reset. |
Use Scenario: Securing boot integrity in portable ultrasound and ECG devices powered by Li-ion batteries with variable discharge profiles. IC Role / Device Role / Timing Role: Dual-rail supervisor verifying both analog front-end (3.3V) and digital processing (1.8V) supplies before enabling acquisition. Use Value: 15µA typical supply current extends battery runtime; factory-trimmed thresholds eliminate calibration overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6720AUTSDD3+T | Open-drain RST output instead of push-pull; identical thresholds and timeout | Requires external pullup resistor; suitable where level-shifting or wired-OR reset bus is needed | Select MAX6720AUTSDD3+T only when system requires open-drain reset signaling or shared reset bus topology. |
| TPS3808G33DBVR | Single-supply (3.3V only) supervisor; 200ms timeout; 3.08V threshold; no VCC2 monitoring | Lacks secondary supply monitoring; no MR or WDI support; lower quiescent current (1.8µA) | Choose TPS3808G33DBVR only for cost-sensitive single-rail applications where VCC2 supervision is unnecessary. |
Compared with MAX6722AUTSDD3+T, MAX6720AUTSDD3+T trades push-pull drive for open-drain flexibility, while TPS3808G33DBVR sacrifices dual-rail capability for ultra-low ICC - making MAX6722AUTSDD3+T uniquely suited for robust multivoltage system supervision.
Availability
MAX6722AUTSDD3+T is available at Aetrix Electronics and suitable for telecom infrastructure, industrial automation, and automotive electronics requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6722AUTSDD3+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 demanding industrial, automotive, and communications applications.
The MAX6715A–MAX6729A family delivers ultra-low-voltage dual/triple-supply supervision with guaranteed operation down to 0.8V - engineered specifically for reliability-critical embedded systems where power integrity must be enforced across multiple rails.
FAQ
What is the exact reset threshold voltage for VCC1 on the MAX6722AUTSDD3+T?
The MAX6722AUTSDD3+T has a factory-trimmed VCC1 reset threshold of 4.625V (typical), with tolerance of ±125mV (4.500V to 4.750V). This value is fixed per the "D" suffix in the ordering code and applies across the full -40°C to +125°C operating range with 20ppm/°C tempco.
Does the MAX6722AUTSDD3+T support monitoring a third voltage rail?
No, the MAX6722AUTSDD3+T is a dual-supply supervisor and does not include the RSTIN input required for adjustable third-rail monitoring. That feature is present only in variants like MAX6723A–MAX6727A. The MAX6722AUTSDD3+T monitors only VCC1 and VCC2.
What is the function of Pin 6 (WDI) on the MAX6722AUTSDD3+T?
Pin 6 is the Watchdog Input (WDI). When left unconnected, the watchdog is disabled. If used, it requires periodic rising/falling edges to prevent reset assertion; after reset, it enters a 35s startup mode, then switches to 1.12s normal timeout. The MAX6722AUTSDD3+T includes this pin but does not require its use.
Can the MAX6722AUTSDD3+T operate with VCC1 = 2.5V and VCC2 = 1.8V?
Yes, the MAX6722AUTSDD3+T supports VCC1 and VCC2 from 0.8V to 5.5V. At VCC1 = 2.5V, the RST output high level is guaranteed at 0.8 × VCC1 = 2.0V (min), and reset remains valid as long as either supply stays ≥ 0.8V - enabling use in low-voltage FPGA and ASIC platforms.
Is the MAX6722AUTSDD3+T RoHS compliant and lead-free?
Yes, the "+T" suffix in MAX6722AUTSDD3+T indicates RoHS-compliant, lead-free packaging per JEDEC J-STD-609. The SOT23-6 package uses matte tin finish and meets IPC/JEDEC standard J-STD-020 for moisture sensitivity level (MSL) 1.
MAX6722AUTSDD3+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 0.788V, 2.925V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-6
MAX6722AUTSDD3+T FAQ
1.How can I place an order for MAX6722AUTSDD3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6722AUTSDD3+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 MAX6722AUTSDD3+T reliable?
The price and inventory of MAX6722AUTSDD3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6722AUTSDD3+T is usually 5 days.
3.What payment methods are accepted for MAX6722AUTSDD3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6722AUTSDD3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6722AUTSDD3+T?
MAX6722AUTSDD3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6722AUTSDD3+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 MAX6722AUTSDD3+T?
For technical support, including MAX6722AUTSDD3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6722AUTSDD3+T requirements.
6.How does Aetrix verify that MAX6722AUTSDD3+T is sourced from the original manufacturer or authorized distributors?
All MAX6722AUTSDD3+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 MAX6722AUTSDD3+T meets industry standards.
7.What is the process for return or replacement of MAX6722AUTSDD3+T?
All MAX6722AUTSDD3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6722AUTSDD3+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 MAX6722AUTSDD3+T part is unused and in its original packaging.
Return procedure for MAX6722AUTSDD3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6722AUTSDD3+T Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
