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Analog Devices Inc./Maxim Integrated MAX6722UTRVD3
- Part No.:
- MAX6722UTRVD3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6722UTRVD3.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,104
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Product details
Overview
The MAX6722UTRVD3 from Maxim Integrated is a dual-voltage microprocessor supervisory circuit in 6-pin SOT23 package, monitoring primary (VCC1) and secondary (VCC2) supplies with factory-trimmed reset thresholds of 4.625V (VTH1) and 3.075V (VTH2), 210ms minimum reset timeout, and guaranteed reset validity down to VCC1 or VCC2 = 0.8V - used in telecom power management and industrial embedded controllers for reliable brownout detection and system initialization.
For engineers reviewing the MAX6722UTRVD3 datasheet, MAX6722UTRVD3 pinout, MAX6722UTRVD3 application, or MAX6722UTRVD3 equivalent, key selection considerations include dual-supply threshold accuracy (±1.5% over temperature), ultra-low 14µA supply current at 3.6V, push-pull active-low RST output referenced to VCC1, and immunity to sub-20µs VCC transients - critical for battery-backed and high-reliability systems.
Technical Context
This device implements two independent voltage comparators with internal hysteresis (0.5% of VTH), a precision 210ms reset timeout timer, and logic-controlled reset assertion triggered by VCC1/VCC2 undervoltage, manual-reset input (MR), or watchdog timeout. It operates across -40°C to +125°C with no external components required for basic supervision.
The MAX6722UTRVD3 uses a push-pull RST output referenced to VCC1, supports MR with 50kΩ internal pullup and 1µs minimum pulse width, and guarantees valid reset state even when VCC1 or VCC2 drops to 0.8V - enabling robust operation during deep brownout conditions without auxiliary biasing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Reset Threshold | 4.625V (typ), ±1.5% over -40°C to +125°C - sets precise brownout point for 5V or 4.8V primary rails |
| VCC2 Reset Threshold | 3.075V (typ), ±1.5% over -40°C to +125°C - monitors 3.3V secondary supply with tight tolerance |
| Reset Timeout Period | 210ms (min) - ensures µP completes boot sequence before releasing reset |
| Supply Current | 14µA (typ) at 3.6V - enables long-term operation in battery-powered systems |
| Operating Temperature | -40°C to +125°C - qualified for automotive under-hood and industrial control environments |
| Reset Output Type | Push-pull, active-low, referenced to VCC1 - eliminates need for external pullup and reduces BOM count |
| MR Input Logic | Active-low with 50kΩ internal pullup to VCC1 - simplifies manual reset interface with momentary switch to GND |
Pinout & Package
MAX6722UTRVD3 is housed in a 6-pin SOT23 package (2.9mm × 1.6mm × 1.1mm), surface-mount, RoHS-compliant, with thermal pad not electrically connected.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST / RST1 | Active-low push-pull reset output referenced to VCC1; asserts low on VCC1/VCC2 undervoltage or MR activation |
| 2 | GND | System ground reference for all internal comparators and timers |
| 3 | MR | Active-low manual-reset input with 50kΩ internal pullup to VCC1; resets system when pulled to GND |
| 4 | VCC2 | Secondary supply input (0.8V–5.5V); powers internal circuitry when > VCC1 and provides VTH2 monitoring path |
| 5 | VCC1 | Primary supply input (0.8V–5.5V); powers device when > VCC2 and provides VTH1 monitoring path |
| 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 thresholds and shared reset timeout |
| Guaranteed reset validity down to 0.8V | Ensures correct RST logic state even during severe brownout - no external biasing needed |
| Immunity to short VCC transients | Rejects negative-going glitches <20µs (at 100mV overdrive), preventing spurious resets in noisy power environments |
| Low quiescent current | 14µA typical at 3.6V enables >10-year battery life in always-on monitoring applications |
| Push-pull RST output | Eliminates external pullup resistor, reduces PCB area, and improves noise margin vs. open-drain alternatives |
Applications
| Telecom Power Sequencing | Industrial PLC Controller |
|---|---|
Use Scenario: Monitoring 48V-to-5V DC-DC converter output and isolated 3.3V logic rail in base station power subsystem. IC Role / Device Role / Timing Role: Dual-supply supervisor asserting reset until both rails stabilize above 4.625V and 3.075V, then holding reset for ≥210ms. Use Value: Prevents FPGA configuration corruption during cold-start by enforcing strict power-rail sequencing and timing. |
Use Scenario: Ensuring deterministic startup of ARM Cortex-M7-based controller after AC power interruption in factory automation cabinet. IC Role / Device Role / Timing Role: Supervising main 5V system rail and 3.3V I/O rail; MR input wired to front-panel reset button. Use Value: Guarantees clean reset release only after full rail stabilization - eliminating boot hangs caused by marginal VCC2 droop. |
| Automotive Body Control Module | Medical Infusion Pump |
Use Scenario: Monitoring battery-backed 5V MCU supply and 3.3V sensor interface rail in under-dash BCM exposed to wide temperature swings. IC Role / Device Role / Timing Role: Dual-threshold supervisor operating across -40°C to +125°C with 0.8V reset validity guarantee. Use Value: Maintains functional safety integrity during engine cranking events where battery dips to 6V, causing 5V rail to sag near 4.6V. |
Use Scenario: Supervising isolated 5V analog front-end supply and 3.3V digital controller rail in Class II medical device with battery backup. IC Role / Device Role / Timing Role: Providing fail-safe reset with 210ms timeout and MR-initiated emergency shutdown via tactile button. Use Value: Meets IEC 62304 software lifecycle requirements by ensuring deterministic hardware reset on power anomaly or user intervention. |
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 IQ | Lacks dual-rail capability - requires separate IC for primary rail monitoring | Select when only one supply needs supervision and ultra-low IQ is prioritized over dual-threshold functionality |
| ADM6705ARJZ-REEL7 | 5-pin SOT23, VTH1 = 4.63V, VTH2 = 3.08V, 200ms timeout, open-drain RST | Open-drain output requires external pullup; no MR input; slightly tighter VTH tolerance (±0.75%) | Choose when board space is constrained (5-pin) and external pullup is acceptable; MR not required |
Compared with TPS3808G33DBVR and ADM6705ARJZ-REEL7, the MAX6722UTRVD3 uniquely integrates dual independent supply monitoring, MR input, and push-pull RST in a single 6-pin SOT23 - reducing component count and eliminating external biasing while maintaining full industrial temperature range support.
Availability
MAX6722UTRVD3 is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, and automotive body control modules requiring stable component supply, extended temperature operation, and dual-rail brownout protection.
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) designs precision analog and mixed-signal ICs for power management, sensing, and interface applications in industrial, automotive, and communications markets.
The MAX6715A–MAX6729A family delivers ultra-low-voltage, multi-rail µP supervision with factory-trimmed thresholds and integrated timing - targeting high-reliability embedded systems where power integrity and deterministic reset behavior are critical.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6722UTRVD3?
The MAX6722UTRVD3 has factory-trimmed reset thresholds of 4.625V (VTH1) for VCC1 and 3.075V (VTH2) for VCC2, with ±1.5% tolerance over the full -40°C to +125°C temperature range. These values are defined by the 'T' and 'S' suffixes in the part number and confirmed in Maxim's Reset Voltage Threshold Suffix Guide. The MAX6722UTRVD3 does not support adjustable thresholds - only factory-set dual-voltage monitoring.
Does the MAX6722UTRVD3 include a watchdog timer or manual-reset input?
Yes, the MAX6722UTRVD3 includes an active-low manual-reset (MR) input with 50kΩ internal pullup to VCC1 and 1µs minimum pulse width requirement, but it does not include a watchdog timer. Watchdog functionality is present only in MAX6721A–MAX6729A variants with 'W' or 'WD' suffixes - the MAX6722UTRVD3 is a dual-supply supervisor without watchdog capability.
What is the reset timeout period for the MAX6722UTRVD3, and is it adjustable?
The MAX6722UTRVD3 has a fixed minimum reset timeout period of 210ms, set by the 'D3' suffix in the part number per Maxim's Reset Timeout Period Suffix Guide. This timeout is internally generated and non-adjustable - it begins when VCC1 and VCC2 rise above their respective thresholds and holds RST low for ≥210ms before releasing. No external capacitor or resistor modifies this timing.
Can the MAX6722UTRVD3 monitor a third voltage rail such as a 1.8V core supply?
No, the MAX6722UTRVD3 is a dual-supply supervisor and lacks the RSTIN input required for monitoring a third voltage. Third-rail monitoring is supported only in MAX6719A/MAX6720A/MAX6723A–MAX6727A variants (with 'RSTIN' pin). The MAX6722UTRVD3 has six pins: RST, GND, MR, VCC2, VCC1, and NC - no dedicated auxiliary input is present.
What output type does the MAX6722UTRVD3 use for its reset signal?
The MAX6722UTRVD3 features a push-pull, active-low RST output referenced to VCC1 - meaning it actively drives low during reset and actively drives high (to VCC1) when deasserted. This eliminates the need for an external pullup resistor, unlike open-drain alternatives. The output can sink ≥3.2mA at VCC1 = 4.5V and source ≥800µA, meeting standard CMOS logic level requirements.
MAX6722UTRVD3 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:
- 1.575V, 2.625V
- 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
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.
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