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Analog Devices Inc./Maxim Integrated MAX6722UTRVD3+
- Part No.:
- MAX6722UTRVD3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- -
- Datasheet:
-
MAX6722UTRVD3+.pdf
- Description:
- MAX6722UTRVD3+
- Quantity:
- Payment:
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Product details
Overview
MAX6722UTRVD3+ from Maxim Integrated is a dual-voltage microprocessor supervisory IC monitoring VCC1 (1.575V threshold) and VCC2 (0.788V threshold), with manual reset input (MR), push-pull active-low RST output, and 210ms minimum reset timeout period - designed for reliable power-up/brownout detection in multivoltage embedded systems.
For engineers reviewing the MAX6722UTRVD3+ datasheet, MAX6722UTRVD3+ pinout, MAX6722UTRVD3+ application, or MAX6722UTRVD3+ equivalent, key selection criteria include guaranteed reset validity down to VCC1/VCC2 = 0.8V, 14µA typical supply current at 3.6V, immunity to short VCC transients, and SOT23-6 package compatibility with space-constrained PCB layouts.
Technical Context
The MAX6722UTRVD3+ integrates two independent voltage comparators with factory-trimmed thresholds (VTH1 = 1.575V, VTH2 = 0.788V), a 210ms reset timeout timer, and a push-pull RST driver referenced to VCC1. It asserts reset when either monitored supply falls below its threshold and holds reset for the full timeout after recovery.
It features an internal 50kΩ pullup on MR, supports TTL/CMOS-compatible manual reset triggering with 1µs minimum pulse width, and guarantees correct reset logic state as long as VCC1 or VCC2 remains ≥ 0.8V - enabling robust operation during deep brownout conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Reset Threshold | 1.575V (typical); ensures reliable detection of 1.8V rail undervoltage before system instability |
| VCC2 Reset Threshold | 0.788V (typical); enables monitoring of low-voltage core supplies such as 0.9V DSP or FPGA domains |
| Reset Timeout Period | 210ms (min); provides sufficient hold time for slow-starting DC/DC converters and processor initialization |
| Supply Current | 14µA (typ at 3.6V); minimizes quiescent power draw in battery-operated or always-on systems |
| Operating Temperature | -40°C to +85°C; qualified for industrial and telecom equipment environments |
| Reset Output Type | Push-pull active-low RST; eliminates need for external pullup resistor and drives directly into µP reset pin |
| MR Input Logic | Active-low with 50kΩ internal pullup to VCC1; simplifies manual reset implementation using momentary switch to GND |
Pinout & Package
MAX6722UTRVD3+ is housed in a 6-pin SOT23-6 package (2.9mm × 1.6mm × 1.1mm), RoHS-compliant and lead-free (+ suffix), with thermal pad not electrically connected.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Active-low push-pull reset output referenced to VCC1; asserts low on fault and holds for 210ms after recovery |
| 2 | GND | System ground reference for all internal comparators, timers, and I/O |
| 3 | MR | Active-low manual reset input with internal 50kΩ pullup to VCC1; triggers reset on logic low |
| 4 | VCC2 | Secondary supply input (0.9V–3.3V range); powers internal circuitry when > VCC1 and sets VTH2 comparator reference |
| 5 | VCC1 | Primary supply input (1.8V–5.0V range); powers device when > VCC2 and sets VTH1 comparator reference |
| 6 | NC | No connect; internally unconnected pin per MAX6722 functional configuration |
Key Features
| Feature | Design Value |
|---|---|
| Dual-voltage monitoring | Simultaneous supervision of primary (VCC1) and secondary (VCC2) rails with independent factory-trimmed thresholds |
| Guaranteed reset validity | Operates correctly down to VCC1 or VCC2 = 0.8V - critical for brownout resilience in wide-input power systems |
| Low-power design | 14µA typical ICC at 3.6V enables use in energy-sensitive applications without compromising supervision reliability |
| Transient immunity | Immune to short-duration VCC glitches (e.g., <20µs at 100mV overdrive), preventing spurious resets in noisy environments |
| SOT23-6 footprint | Standard 6-pin SOT23 package enables drop-in replacement and high-density layout in space-constrained designs |
Applications
| Telecom Line Card Power Sequencing | Industrial PLC CPU Module |
|---|---|
Use Scenario: Monitoring 3.3V management rail and 1.2V FPGA core supply during hot-swap insertion and AC brownout events. IC Role / Device Role / Timing Role: Dual-rail supervisor asserting synchronized reset to prevent partial configuration and latch-up during unstable power transitions. Use Value: 210ms timeout ensures safe hold-off while DC/DC converters re-stabilize; 0.8V validity threshold maintains reset integrity even during severe sag on backup battery path. |
Use Scenario: Ensuring deterministic startup and fault recovery for ARM-based controller running real-time I/O firmware. IC Role / Device Role / Timing Role: Primary reset generator coordinating power-good signaling between isolated 24V input stage and 5V/3.3V logic domain. Use Value: Push-pull RST eliminates external pullup, reducing BOM count; MR input allows field-service reset via front-panel button without firmware intervention. |
| Network Router SoC Power Management | Medical Diagnostic Handheld |
Use Scenario: Supervising 1.8V SerDes supply and 0.9V CPU core rail in multi-rail PMIC architecture with tight sequencing requirements. IC Role / Device Role / Timing Role: Independent voltage monitor feeding reset signal to SoC's POR logic, decoupled from PMIC's internal timing. Use Value: Factory-trimmed 1.575V/0.788V thresholds match exact rail tolerances; 14µA supply current extends battery life in standby mode. |
Use Scenario: Battery-powered ultrasound probe requiring fail-safe reset during Li-ion voltage decay from 4.2V to 3.0V. IC Role / Device Role / Timing Role: Brownout detector triggering controlled shutdown before data corruption occurs in flash memory subsystem. Use Value: Valid reset assertion down to 0.8V allows full utilization of battery discharge curve; SOT23-6 footprint fits compact flex PCB assembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6721UTRVD3+ | Open-drain RST output (vs. push-pull); requires external pullup resistor | Used where level-shifting or wired-OR reset bus is required | Select when interfacing with bidirectional µP reset pins or shared reset buses |
| TPS3808G33DBVR | Single-supply monitor (3.3V only); no VCC2 input; 200ms timeout; higher 22µA ICC | Limited to single-rail systems; lacks secondary supply monitoring capability | Choose only if monitoring one rail suffices and board space allows SOT23-5 vs. SOT23-6 |
Compared with MAX6721UTRVD3+, the MAX6722UTRVD3+ eliminates external pullup components and simplifies layout, while TPS3808G33DBVR reduces channel count and increases supply current - making MAX6722UTRVD3+ optimal for dual-rail integrity-critical designs where push-pull drive and minimal quiescent power are prioritized.
Availability
MAX6722UTRVD3+ is available at Aetrix Electronics and suitable for telecom line cards, industrial PLCs, network routers, and medical handhelds requiring stable component supply across extended temperature and long production lifecycles.
Supply support for MAX6722UTRVD3+ 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and computing markets.
The MAX6715–MAX6729 family was engineered to replace discrete reset circuits in multivoltage systems, delivering integrated dual/triple supervision with ultra-low ICC, guaranteed sub-1V operation, and SOT23 packaging for space-constrained embedded control.
FAQ
What is the reset timeout period of the MAX6722UTRVD3+?
The MAX6722UTRVD3+ has a minimum reset timeout period of 210ms, as indicated by the "D3" suffix in its part number. This timeout begins after VCC1 and VCC2 rise above their respective thresholds (1.575V and 0.788V) and ensures the microprocessor remains held in reset long enough for power supplies and internal logic to fully stabilize before release. The actual timeout is production-tested and guaranteed across -40°C to +85°C.
Does the MAX6722UTRVD3+ support monitoring a third voltage rail?
No, the MAX6722UTRVD3+ is a dual-voltage supervisor and does not include the RSTIN input required for auxiliary voltage monitoring. That functionality is present only in MAX6719/MAX6720/MAX6723–MAX6729 variants. The MAX6722UTRVD3+ monitors exactly two supplies: VCC1 (primary) and VCC2 (secondary), with fixed factory-trimmed thresholds.
What is the function of Pin 6 on the MAX6722UTRVD3+?
Pin 6 on the MAX6722UTRVD3+ is a no-connect (NC) pin. It is not bonded internally and must be left floating - neither tied to GND nor VCC. This configuration aligns with the MAX6722's functional set (dual monitor, MR, push-pull RST) and distinguishes it from 6-pin variants like MAX6721 (which uses Pin 6 for WDI) or 8-pin versions that add PFI/PFO or RST2.
Can the MAX6722UTRVD3+ operate with VCC2 lower than VCC1?
Yes - the MAX6722UTRVD3+ is explicitly designed to operate with VCC2 (0.9V–3.3V) lower than VCC1 (1.8V–5.0V). Its internal architecture powers circuitry from whichever supply is higher, and both comparators remain functional as long as at least one supply is ≥ 0.8V. This enables use in asymmetric power architectures such as 5V/1.2V or 3.3V/0.9V systems.
Is the MAX6722UTRVD3+ pin-compatible with other MAX67xx SOT23-6 variants?
No - pin compatibility is not guaranteed across the MAX6715–MAX6729 family. While all SOT23-6 variants share the same physical package, pin functions differ: MAX6722UTRVD3+ assigns Pin 6 as NC, whereas MAX6721 uses Pin 6 for WDI and MAX6715 uses Pin 6 for RST2. Always verify pin mapping against the specific device's Pin Description table before PCB layout.
MAX6722UTRVD3+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- -
- Number of Voltages Monitored:
- -
- Voltage - Threshold:
- -
- Output:
- -
- Reset:
- -
- Reset Timeout:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX6722UTRVD3+ FAQ
1.How can I place an order for MAX6722UTRVD3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6722UTRVD3+ 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 MAX6722UTRVD3+ reliable?
The price and inventory of MAX6722UTRVD3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6722UTRVD3+ is usually 5 days.
3.What payment methods are accepted for MAX6722UTRVD3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6722UTRVD3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6722UTRVD3+?
MAX6722UTRVD3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6722UTRVD3+ 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 MAX6722UTRVD3+?
For technical support, including MAX6722UTRVD3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6722UTRVD3+ requirements.
6.How does Aetrix verify that MAX6722UTRVD3+ is sourced from the original manufacturer or authorized distributors?
All MAX6722UTRVD3+ 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 MAX6722UTRVD3+ meets industry standards.
7.What is the process for return or replacement of MAX6722UTRVD3+?
All MAX6722UTRVD3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6722UTRVD3+, 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 MAX6722UTRVD3+ part is unused and in its original packaging.
Return procedure for MAX6722UTRVD3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6722UTRVD3+ Tags
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APX803L20-29SA-7
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