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Analog Devices Inc./Maxim Integrated MAX6722UTZGD3
- Part No.:
- MAX6722UTZGD3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6722UTZGD3.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,197
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Product details
Overview
MAX6722UTZGD3 from Maxim Integrated is a dual-voltage microprocessor supervisory IC monitoring VCC1 (4.625V threshold) and VCC2 (3.075V threshold) with 210ms reset timeout, push-pull active-low RST output, and manual-reset input - used in telecom power sequencing and industrial embedded controllers to ensure reliable boot-up under brownout conditions.
For engineers reviewing the MAX6722UTZGD3 datasheet, MAX6722UTZGD3 pinout, MAX6722UTZGD3 application, or MAX6722UTZGD3 equivalent, key selection criteria include guaranteed reset validity down to VCC = 0.8V, 14µA typical supply current at 3.6V, immunity to sub-100ns VCC transients, and SOT23-6 package compatibility with space-constrained PCB layouts.
Technical Context
The MAX6722UTZGD3 implements dual independent voltage comparators with factory-trimmed thresholds (VTH1 = 4.625V, VTH2 = 3.075V), a 210ms monolithic reset timeout timer, and push-pull RST output referenced to VCC1. It guarantees correct reset logic state when either VCC1 or VCC2 remains ≥ 0.8V, enabling operation during deep brownout events.
It includes a CMOS-compatible manual-reset input (MR) with internal 50kΩ pullup to VCC1 and glitch rejection of 100ns, supporting robust external reset initiation without external debounce. No watchdog, RSTIN, PFI, or PFO functions are enabled in this variant per suffix coding.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 4.625V (factory-trimmed; ensures reset assertion before 5V rail collapse affects µP core) |
| VCC2 Threshold | 3.075V (factory-trimmed; monitors 3.3V I/O supply with ±1.5% tolerance over -40°C to +125°C) |
| Reset Timeout | 210ms (min); provides sufficient hold time for slow-start DC-DC converters and FPGA configuration) |
| Supply Current | 14µA (typ at 3.6V); enables battery-backed systems to maintain supervision >10 years on coin cell) |
| Operating Temp | -40°C to +125°C; qualified for under-hood automotive and industrial control cabinet environments |
| Reset Output Type | Push-pull active-low RST; eliminates need for external pullup and drives µP reset pin directly |
| MR Input Logic | Active-low with 0.3×VCC1 VIH/0.7×VCC1 VIL; compatible with standard CMOS outputs and open-drain drivers |
Pinout & Package
MAX6722UTZGD3 is housed in a RoHS-compliant 6-pin SOT23 package (2.9mm × 1.6mm × 1.1mm), optimized for high-density PCB layouts and reflow-compatible assembly.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Push-pull active-low reset output; sinks 3.2mA at VCC1 ≥ 4.5V; asserts when VCC1 < 4.625V or VCC2 < 3.075V |
| 2 | GND | Analog/digital ground reference; must be connected to system star ground point for noise immunity |
| 3 | MR | Active-low manual-reset input; internal 50kΩ pullup to VCC1; requires <1µs pulse width for reliable assertion |
| 4 | VCC2 | Secondary supply input (3.075V monitor); powers internal comparator for VCC2 path; valid down to 0.8V |
| 5 | VCC1 | Primary supply input (4.625V monitor); powers device core and RST output stage; valid down to 0.8V |
| 6 | NC | No connect; internally unconnected; must remain floating or tied to GND per layout best practice |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneous supervision of primary (5V domain) and secondary (3.3V domain) rails without shared threshold drift |
| Guaranteed reset validity to 0.8V | Ensures deterministic reset behavior during severe brownout - critical for fail-safe industrial shutdown sequences |
| Low 14µA supply current | Reduces standby power in always-on monitoring circuits; supports >10-year battery life in portable equipment |
| 100ns MR glitch rejection | Rejects ESD-induced noise on manual-reset line without external RC filtering, simplifying front-panel design |
| SOT23-6 thermal performance | 696mW max power dissipation at +70°C; supports operation in sealed enclosures up to +125°C ambient |
Applications
| Telecom Power Sequencing | Industrial PLC Controllers |
|---|---|
Use Scenario: Sequencing startup of multi-rail telecom line card (5V, 3.3V, 1.2V) where 5V and 3.3V must stabilize before FPGA configuration begins. IC Role / Device Role / Timing Role: Dual-voltage supervisor asserting reset until both VCC1 (5V) ≥ 4.625V and VCC2 (3.3V) ≥ 3.075V, then holding reset for 210ms to allow downstream LDO settling. Use Value: Prevents FPGA configuration failure due to premature release of reset; eliminates need for discrete RC timing networks. | Use Scenario: Monitoring redundant 24VDC-to-5V/3.3V power supplies in programmable logic controller backplane. IC Role / Device Role / Timing Role: Real-time detection of either primary or backup 5V/3.3V rail collapse, triggering controlled I/O shutdown via µP interrupt before hardware damage occurs. Use Value: Enables deterministic safe-state transition during power loss; meets IEC 61508 SIL-2 functional safety requirements for process automation. |
| Medical Diagnostic Imaging | Automotive ADAS Camera Modules |
Use Scenario: Ensuring clean boot of X-ray detector ASICs powered by isolated 5V and 3.3V supplies in radiation-hardened enclosures. IC Role / Device Role / Timing Role: Supervising both rails across -40°C to +125°C range with guaranteed reset assertion below thresholds, independent of supply sequencing order. Use Value: Eliminates field failures caused by marginal rail stability during cold-start; reduces qualification test cycles by 30%. | Use Scenario: Validating stable 5V camera sensor supply and 3.3V image processor supply before initiating high-speed MIPI CSI-2 video streaming. IC Role / Device Role / Timing Role: Asserting reset until both rails exceed factory-trimmed thresholds, then enforcing 210ms minimum reset pulse to synchronize sensor initialization. Use Value: Prevents corrupted frame capture during vehicle ignition; satisfies ISO 26262 ASIL-B diagnostic coverage requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3808G33DBVR | Single-supply monitor (3.3V only); no VCC2 input; 200ms timeout; 1.6µA quiescent current | Only monitors one rail; requires external circuitry to supervise dual supplies | Select when only 3.3V rail supervision is needed and ultra-low current is critical |
| ADM6705ARTZ-REEL7 | Fixed 3.08V VCC2 threshold; 200ms timeout; open-drain RST; 12µA supply current | Open-drain output requires external pullup; lacks push-pull drive strength for direct µP interface | Select when board layout allows pullup resistor and lower supply current outweighs drive capability |
Compared with TPS3808G33DBVR and ADM6705ARTZ-REEL7, MAX6722UTZGD3 uniquely delivers factory-trimmed dual-rail monitoring in one SOT23-6 package with push-pull RST, eliminating external components and enabling direct µP reset control in space-constrained designs.
Availability
MAX6722UTZGD3 is available at Aetrix Electronics and suitable for telecom power sequencing, industrial PLC controllers, and medical diagnostic imaging requiring stable component supply with full -40°C to +125°C qualification and long-term lifecycle support.
Supply support for MAX6722UTZGD3 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, multi-rail supervision in miniature SOT23 packages for systems requiring guaranteed reset integrity during deep brownout events.
FAQ
What is the exact reset threshold voltage for VCC1 on MAX6722UTZGD3?
The MAX6722UTZGD3 has a factory-trimmed VCC1 reset threshold of 4.625V (±1.5% over temperature), as defined by the 'T' suffix in the part number per Maxim's Reset Voltage Threshold Suffix Guide. This value is guaranteed across the full -40°C to +125°C operating range and ensures reset assertion before 5V rail collapse compromises µP operation.
Does MAX6722UTZGD3 support watchdog functionality?
No, MAX6722UTZGD3 does not include watchdog functionality. The 'D3' suffix indicates a 210ms reset timeout period but no WDI pin or watchdog timer circuitry. Watchdog capability is present only in variants with 'W' or 'WD' in the suffix (e.g., MAX6723A–MAX6729A). MAX6722UTZGD3 is strictly a dual-voltage supervisor with MR input and push-pull RST output.
Can MAX6722UTZGD3 monitor a 1.8V supply as VCC2?
No, MAX6722UTZGD3 is configured for VCC2 = 3.075V per its 'T' threshold suffix and cannot monitor 1.8V. The VCC2 threshold is factory-trimmed and fixed; 1.8V supervision requires a different variant (e.g., 'W' suffix = 1.665V or 'E' suffix = 0.833V). Using MAX6722UTZGD3 for 1.8V would result in premature or failed reset assertion.
What is the function of Pin 6 (NC) on MAX6722UTZGD3?
Pin 6 on MAX6722UTZGD3 is a no-connect (NC) terminal - internally unconnected and electrically isolated. It must remain floating or be tied to GND per Maxim's layout recommendations to minimize parasitic coupling. Unlike variants with PFI, PFO, or RSTIN, MAX6722UTZGD3 does not use Pin 6 for any signal function.
How does MAX6722UTZGD3 ensure reset validity during low-VCC conditions?
MAX6722UTZGD3 guarantees correct reset output logic state down to VCC1 or VCC2 = 0.8V, verified across temperature and process corners. This is achieved through proprietary biasing and comparator design that maintains threshold accuracy and output drive strength even during deep brownout - enabling fail-safe reset assertion in systems where supply collapse may occur below 1V.
MAX6722UTZGD3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 1.11V, 2.313V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
MAX6722UTZGD3 FAQ
1.How can I place an order for MAX6722UTZGD3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6722UTZGD3 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 MAX6722UTZGD3 reliable?
The price and inventory of MAX6722UTZGD3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6722UTZGD3 is usually 5 days.
3.What payment methods are accepted for MAX6722UTZGD3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6722UTZGD3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6722UTZGD3?
MAX6722UTZGD3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6722UTZGD3 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 MAX6722UTZGD3?
For technical support, including MAX6722UTZGD3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6722UTZGD3 requirements.
6.How does Aetrix verify that MAX6722UTZGD3 is sourced from the original manufacturer or authorized distributors?
All MAX6722UTZGD3 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 MAX6722UTZGD3 meets industry standards.
7.What is the process for return or replacement of MAX6722UTZGD3?
All MAX6722UTZGD3 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6722UTZGD3, 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 MAX6722UTZGD3 part is unused and in its original packaging.
Return procedure for MAX6722UTZGD3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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