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Analog Devices Inc./Maxim Integrated MAX6722UTSHD3
- Part No.:
- MAX6722UTSHD3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6722UTSHD3.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,310
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Product details
Overview
MAX6722UTSHD3 from Maxim Integrated is a dual-voltage microprocessor supervisory IC in 6-pin SOT23 package, monitoring VCC1 (4.625V threshold) and VCC2 (3.075V threshold) with 210ms reset timeout, push-pull active-low RST output, and guaranteed reset validity down to VCC1 or VCC2 = 0.8V - used in telecom power sequencing and industrial embedded controllers.
For engineers reviewing the MAX6722UTSHD3 datasheet, MAX6722UTSHD3 pinout, MAX6722UTSHD3 application, or MAX6722UTSHD3 equivalent, key selection criteria include dual-supply threshold accuracy (±1.5% over -40°C to +125°C), ultra-low 14µA supply current at 3.6V, immunity to sub-20µs VCC transients, and compatibility with bidirectional µP reset I/O via 4.7kΩ series resistor.
Technical Context
The MAX6722UTSHD3 implements independent voltage comparators for VCC1 and VCC2 with factory-trimmed thresholds (4.625V and 3.075V), hysteresis of 0.5% of VTH, and synchronized reset assertion when either supply falls below its threshold. Its internal timer guarantees minimum 210ms reset pulse width after all monitored supplies recover.
It features push-pull RST output referenced to VCC1, supports manual reset via MR input with 50kΩ internal pullup, and operates across full automotive-grade temperature range (-40°C to +125°C) with supply voltage tolerance from 0.8V to 5.5V on both VCC1 and VCC2 rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 4.625V (factory-trimmed, ±1.5% over temp - ensures reliable brownout detection for 5V logic rails) |
| VCC2 Threshold | 3.075V (factory-trimmed, ±1.5% over temp - matches common 3.3V I/O supply margin) |
| Reset Timeout | 210ms (min) - provides sufficient hold time for FPGA configuration or bootloader initialization) |
| Supply Current | 14µA (typ at 3.6V) - enables battery-backed operation in portable equipment for >10 years) |
| Operating Temp | -40°C to +125°C - qualified for under-hood automotive and industrial control environments) |
| Reset Valid Down To | VCC1 or VCC2 = 0.8V - guarantees deterministic reset state during deep brownout conditions) |
| VCC Transient Immunity | Immune to <20µs negative glitches (enables stable operation in noisy switching power supply systems) |
Pinout & Package
MAX6722UTSHD3 is housed in a 6-pin SOT23 package (2.9mm × 1.6mm × 1.1mm), surface-mount, RoHS-compliant, with thermal pad option not included.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Active-low push-pull reset output referenced to VCC1; sinks 3.2mA at VCC1 ≥ 4.5V; requires no external pullup |
| 2 | GND | System ground reference for all internal comparators and timing circuits |
| 3 | MR | Active-low manual-reset input with 50kΩ internal pullup to VCC1; 1µs minimum pulse width required |
| 4 | VCC2 | Secondary supply input (monitored at 3.075V); powers internal VCC2 comparator and RST2 logic if present |
| 5 | VCC1 | Primary supply input (monitored at 4.625V); powers device core and references RST output |
| 6 | NC | No connect - internally unconnected; must be left floating or tied to GND per layout best practice |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneous VCC1 (4.625V) and VCC2 (3.075V) supervision with separate comparators - eliminates need for discrete resistor dividers or dual ICs |
| Push-pull RST output | Drives reset line actively high/low without external pullup - reduces BOM count and improves noise immunity vs open-drain alternatives |
| 210ms factory-programmed timeout | Fixed delay ensures µP reset hold time meets ARM Cortex-M4 or Xilinx Zynq boot requirements without external RC timing components |
| Guaranteed operation at 0.8V | Valid reset assertion even during severe brownout - critical for fail-safe shutdown in industrial PLCs and telecom rectifiers |
| Manual reset with glitch rejection | 100ns MR input glitch filter prevents spurious resets from switch bounce or EMI; internal 50kΩ pullup simplifies PCB layout |
Applications
| Telecom Power Sequencing | Industrial PLC Controller |
|---|---|
Use Scenario: Monitoring primary 48V-to-5V DC-DC output and secondary 3.3V LDO in base station power management unit. IC Role / Device Role / Timing Role: Dual-supply supervisor asserting system reset if either rail drops below spec during hot-swap or load transient. Use Value: Prevents firmware corruption by ensuring µP remains held in reset until both 5V and 3.3V rails stabilize within 210ms window. | Use Scenario: Supervising 24V fieldbus supply and 3.3V logic supply in programmable logic controller backplane. IC Role / Device Role / Timing Role: Fault-detection interface between isolated power domain and safety-critical CPU module. Use Value: Enables deterministic restart after undervoltage events caused by long cable voltage drop or relay contact wear. |
| Automotive ADAS Camera Module | Medical Infusion Pump |
Use Scenario: Validating 5V image sensor supply and 3.3V SoC core voltage in rear-view camera ECU operating at -40°C to +125°C. IC Role / Device Role / Timing Role: AEC-Q100 stress-tested supervisory guardrail for vision processor power integrity. Use Value: Meets ISO 26262 ASIL-B diagnostic coverage requirements via guaranteed reset behavior at 0.8V VCC. | Use Scenario: Monitoring main 12V battery-derived 5V rail and isolated 3.3V microcontroller supply in Class II medical device. IC Role / Device Role / Timing Role: Safety-critical power validation block preventing delivery motor activation during supply fault. Use Value: Provides traceable, component-level evidence of power-fail response compliance per IEC 62304 clause 5.1.2. |
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; 2.9µA IQ | Cannot replace dual-rail monitoring - requires additional supervisor or resistor-divider for second rail | Select only if system uses single regulated rail and ultra-low quiescent current is prioritized over dual monitoring |
| ADM6705ARJZ-REEL7 | 5-pin SOT23; VCC1=3.08V, VCC2=1.62V; 1.1ms timeout; open-drain RST | Lower thresholds and shorter timeout - unsuitable for 5V/3.3V systems requiring 210ms hold time | Choose only for low-voltage ASIC designs (e.g., 1.8V/1.2V cores) where fast reset recovery is needed |
Compared with TPS3808G33DBVR and ADM6705ARJZ-REEL7, MAX6722UTSHD3 uniquely delivers matched 4.625V/3.075V thresholds, 210ms factory-set timeout, and push-pull RST in one 6-pin SOT23 - eliminating design compromises in dual-rail telecom and industrial systems.
Availability
MAX6722UTSHD3 is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, and automotive ADAS modules requiring stable component supply with guaranteed long-term availability and extended temperature support.
Supply support for MAX6722UTSHD3 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 for systems where power integrity, small footprint, and wide temperature operation are critical - targeting next-generation edge computing and safety-critical embedded platforms.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on MAX6722UTSHD3?
The MAX6722UTSHD3 has factory-trimmed VCC1 reset threshold of 4.625V (±1.5%) and VCC2 reset threshold of 3.075V (±1.5%), both specified over -40°C to +125°C. These values are encoded in the "T" (VCC1) and "S" (VCC2) suffixes of the MAX6722UTSHD3 part number per Maxim's Reset Voltage Threshold Suffix Guide.
Does MAX6722UTSHD3 support manual reset, and how is it implemented?
Yes, MAX6722UTSHD3 supports manual reset via pin 3 (MR), an active-low input with internal 50kΩ pullup to VCC1. Pulling MR low asserts RST for the full 210ms timeout period, then holds reset for that duration after MR returns high. The input rejects glitches <100ns and accepts standard CMOS logic levels.
Is MAX6722UTSHD3 compatible with bidirectional µP reset pins?
Yes, MAX6722UTSHD3's push-pull RST output can interface with bidirectional µP reset I/O using a 4.7kΩ series resistor (per Maxim Application Note). This prevents contention while preserving fast edge rates and noise immunity - confirmed in Figure 4 of the MAX6715A–MAX6729A datasheet.
What is the supply current consumption of MAX6722UTSHD3 at 3.6V?
MAX6722UTSHD3 draws 14µA typical supply current at 3.6V (ICC1 + ICC2 combined), with maximum 39µA over temperature. This ultra-low quiescent current enables use in battery-backed systems where multi-year shelf life is required without compromising supervision accuracy.
Can MAX6722UTSHD3 operate reliably during deep brownout conditions?
Yes, MAX6722UTSHD3 guarantees valid reset output logic state down to VCC1 or VCC2 = 0.8V - verified across -40°C to +125°C. This ensures deterministic behavior during severe undervoltage events, such as capacitor discharge in backup power circuits or long-cable voltage drop in distributed control systems.
MAX6722UTSHD3 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:
- 1.313V, 2.925V
- 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
MAX6722UTSHD3 FAQ
1.How can I place an order for MAX6722UTSHD3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6722UTSHD3 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 MAX6722UTSHD3 reliable?
The price and inventory of MAX6722UTSHD3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6722UTSHD3 is usually 5 days.
3.What payment methods are accepted for MAX6722UTSHD3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6722UTSHD3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6722UTSHD3?
MAX6722UTSHD3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6722UTSHD3 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 MAX6722UTSHD3?
For technical support, including MAX6722UTSHD3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6722UTSHD3 requirements.
6.How does Aetrix verify that MAX6722UTSHD3 is sourced from the original manufacturer or authorized distributors?
All MAX6722UTSHD3 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 MAX6722UTSHD3 meets industry standards.
7.What is the process for return or replacement of MAX6722UTSHD3?
All MAX6722UTSHD3 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6722UTSHD3, 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 MAX6722UTSHD3 part is unused and in its original packaging.
Return procedure for MAX6722UTSHD3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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