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Analog Devices Inc./Maxim Integrated MAX6722UTTGD3+T
- Part No.:
- MAX6722UTTGD3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6722UTTGD3+T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MAX6722UTTGD3+T from Maxim Integrated is a dual-voltage microprocessor supervisory circuit in SOT23-6 package, monitoring VCC1 (4.625V threshold) and VCC2 (3.075V threshold), with manual reset input, push-pull active-low RST output, and 210ms (min) reset timeout period. It guarantees valid reset assertion down to VCC1 or VCC2 = 0.8V and draws only 14µA typical supply current at 3.6V - used in telecom power sequencing and industrial controller brownout protection.
For engineers reviewing the MAX6722UTTGD3+T datasheet, MAX6722UTTGD3+T pinout, MAX6722UTTGD3+T application, or MAX6722UTTGD3+T equivalent, key selection criteria include dual-supply threshold accuracy (±1.5% over temperature), immunity to sub-20µs VCC transients, guaranteed reset validity below 1V supply, and compatibility with 1.8V–5.0V primary/0.9V–3.3V secondary rail systems.
Technical Context
The MAX6722UTTGD3+T integrates two independent voltage comparators with factory-trimmed thresholds (VTH1 = 4.625V, VTH2 = 3.075V), a 210ms minimum reset timeout timer, and a manual reset input with internal 50kΩ pullup to VCC1. Its push-pull RST output is referenced to VCC1 and sinks up to 3.2mA at 4.5V.
It operates across –40°C to +85°C, supports VCC1/VCC2 supply ranges of 1.8V–5.0V and 0.9V–3.3V respectively, and maintains correct reset logic state even when either supply drops to 0.8V - enabling robust operation in low-voltage embedded systems with marginal power integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Reset Threshold | 4.625V (factory-trimmed, ±1.5% over temp) - ensures reliable reset assertion on 5V system rails before critical undervoltage. |
| VCC2 Reset Threshold | 3.075V (factory-trimmed, ±1.5% over temp) - matches common 3.3V I/O or core supply monitoring requirements. |
| Reset Timeout Period | 210ms (minimum) - provides sufficient hold time for processor initialization and peripheral stabilization after power recovery. |
| Supply Current | 14µA (typical at 3.6V) - enables battery-backed or ultra-low-power applications without compromising supervision fidelity. |
| Valid Reset Down To | VCC1 or VCC2 ≥ 0.8V - guarantees deterministic reset behavior during deep brownout or cold-start conditions. |
| MR Input Logic | Active-low with 0.3×VCC1 VIH/0.7×VCC1 VIL - compatible with TTL and CMOS logic families without level-shifting. |
| RST Output Type | Push-pull, active-low, referenced to VCC1 - eliminates need for external pullup and drives directly into µP reset pins. |
Pinout & Package
MAX6722UTTGD3+T is housed in a 6-pin SOT23-6 package (2.9mm × 1.6mm × 1.1mm), RoHS-compliant and lead-free (+T suffix). Pin 1 is marked with dot; pin numbering follows standard SOT23 convention (counterclockwise from mark).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Active-low push-pull reset output referenced to VCC1; asserts low on VCC1/VCC2 undervoltage or MR activation. |
| 2 | GND | Ground reference for all internal comparators, timers, and output drivers; must be low-impedance connection. |
| 3 | MR | Active-low manual reset input with internal 50kΩ pullup to VCC1; 1µs minimum pulse width required for reliable assertion. |
| 4 | VCC2 | Secondary supply input (0.9V–3.3V range); powers internal VCC2 comparator and sets RST2 reference if enabled. |
| 5 | VCC1 | Primary supply input (1.8V–5.0V range); powers device core, defines RST output reference, and enables VCC1 comparator. |
| 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 VCC1 (4.625V) and VCC2 (3.075V) supervision with separate comparators and hysteresis - eliminates need for discrete supervisors. |
| Guaranteed reset validity at low VCC | Functional reset assertion guaranteed down to VCC1 or VCC2 = 0.8V - supports brownout recovery in energy-harvesting or backup-battery systems. |
| Immunity to short VCC transients | Rejects negative-going transients <20µs (at 100mV overdrive) - prevents spurious resets during switching noise or load dump events. |
| Low quiescent current | 14µA typical at 3.6V - reduces standby power in always-on IoT nodes and portable equipment without sacrificing supervision accuracy. |
| Push-pull RST output | Drives µP reset pin directly without external pullup; sinks 3.2mA at 4.5V - simplifies BOM and improves noise margin vs open-drain alternatives. |
Applications
| Telecom Power Sequencing | Industrial PLC Controller |
|---|---|
|
Use Scenario: Sequencing startup of FPGA, DSP, and analog front-end ICs powered by independent 5V, 3.3V, and 1.2V rails in base station RF modules. IC Role / Device Role: Dual-supply supervisor ensuring 5V rail stabilizes before releasing 3.3V reset, and both are valid before enabling 1.2V domain. Use Value: Prevents configuration corruption and latch-up by enforcing strict power-rail ordering with 210ms timeout and 0.8V reset validity. |
Use Scenario: Monitoring main 24V DC-DC output (converted to 5V) and isolated 3.3V I/O rail in programmable logic controller backplane. IC Role / Device Role: Fault detector asserting reset on either rail collapse, with manual reset via front-panel button (MR pin). Use Value: Enables safe shutdown and restart during field maintenance or transient overload, with no external components needed for reset drive. |
| Portable Medical Monitor | Set-Top Box Power Management |
|
Use Scenario: Supervising lithium battery (3.6V nominal) and regulated 1.8V sensor supply in handheld ECG device with sleep/wake cycles. IC Role / Device Role: Low-current supervisor maintaining reset integrity during battery sag to 3.0V while preserving 1.8V rail stability. Use Value: 14µA supply current extends battery life; 0.8V reset guarantee ensures clean restart even after deep discharge recovery. |
Use Scenario: Coordinating power-up of SoC, DDR memory, and HDMI PHY in consumer set-top box with multi-rail DC-DC architecture. IC Role / Device Role: Dual-threshold supervisor verifying 5V main and 3.3V auxiliary rails meet timing and voltage specs before releasing SoC reset. Use Value: Eliminates boot failures due to marginal rail settling; push-pull RST avoids weak-pull issues common with open-drain solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6722UTTGD2+T | Same package and pinout, but 140ms (min) reset timeout instead of 210ms - tighter timing window for fast-boot systems. | Suitable where shorter reset hold time is acceptable (e.g., consumer audio processors), but not for systems requiring >200ms initialization. | Select when faster release from reset is needed and 140ms meets processor spec; verify µP tRST requirement. |
| TPS3808G33DBVR | Single-supply (3.3V only) supervisor with 200ms timeout, 3.08V threshold, and open-drain RST - lacks VCC2 monitoring capability. | Only monitors one rail; requires external circuitry for dual-rail coordination or second supervisor IC. | Use only if system has single critical rail; otherwise, MAX6722UTTGD3+T provides integrated dual-rail supervision with no layout penalty. |
Compared with MAX6722UTTGD2+T and TPS3808G33DBVR, the MAX6722UTTGD3+T uniquely delivers factory-trimmed dual-threshold supervision (4.625V/3.075V), 210ms timeout, and push-pull RST in one SOT23-6 package - reducing component count and PCB area versus multi-IC or single-rail alternatives.
Availability
MAX6722UTTGD3+T is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, and portable medical devices requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.
Supply support for MAX6722UTTGD3+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 power management, sensing, and interface applications - serving industrial, automotive, and communications markets.
The MAX6715–MAX6729 family delivers ultra-low-voltage, dual/triple-supply supervision in miniature SOT23 packages - engineered for space-constrained systems needing reliable power-rail monitoring without external components.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on MAX6722UTTGD3+T?
The MAX6722UTTGD3+T has factory-trimmed VCC1 reset threshold of 4.625V (±1.5%) and VCC2 reset threshold of 3.075V (±1.5%), as defined by the "TT" suffix per Maxim's Reset Voltage Threshold Suffix Guide. These values are guaranteed over –40°C to +85°C and do not require external resistor networks.
Does MAX6722UTTGD3+T support manual reset functionality, and how is it implemented?
Yes, MAX6722UTTGD3+T includes an active-low manual reset input (MR) on pin 3, featuring an internal 50kΩ pullup to VCC1. Pulling MR low for ≥1µs forces reset assertion; reset remains active for the full 210ms timeout after MR returns high. No external components are needed for basic operation.
What is the maximum supply voltage the MAX6722UTTGD3+T can tolerate on VCC1 and VCC2 pins?
The MAX6722UTTGD3+T supports absolute maximum VCC1 and VCC2 voltages of +6V per pin, though operational range is specified from 0.8V to 5.5V. Exceeding 5.5V may cause permanent damage, and operation above 5.0V for VCC1 or 3.3V for VCC2 falls outside factory-trimmed threshold accuracy guarantees.
Is the RST output of MAX6722UTTGD3+T push-pull or open-drain, and what are its drive capabilities?
The RST output of MAX6722UTTGD3+T is push-pull, active-low, and referenced to VCC1. It sources up to 800µA at VCC1 ≥ 4.5V (VOH ≥ 0.8×VCC1) and sinks up to 3.2mA at VCC1 ≥ 4.5V (VOL ≤ 0.4V), enabling direct connection to µP reset pins without external pullup resistors.
How does MAX6722UTTGD3+T behave during brief VCC supply glitches?
MAX6722UTTGD3+T is immune to negative-going VCC transients <20µs in duration when overdriven by 100mV below threshold (per Typical Operating Characteristics). This prevents false resets during switching regulator noise or cable-induced spikes, and a 0.1µF bypass capacitor near VCC further enhances immunity.
MAX6722UTTGD3+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 1.11V, 3.075V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-6
MAX6722UTTGD3+T FAQ
1.How can I place an order for MAX6722UTTGD3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6722UTTGD3+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 MAX6722UTTGD3+T reliable?
The price and inventory of MAX6722UTTGD3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6722UTTGD3+T is usually 5 days.
3.What payment methods are accepted for MAX6722UTTGD3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6722UTTGD3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6722UTTGD3+T?
MAX6722UTTGD3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6722UTTGD3+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 MAX6722UTTGD3+T?
For technical support, including MAX6722UTTGD3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6722UTTGD3+T requirements.
6.How does Aetrix verify that MAX6722UTTGD3+T is sourced from the original manufacturer or authorized distributors?
All MAX6722UTTGD3+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 MAX6722UTTGD3+T meets industry standards.
7.What is the process for return or replacement of MAX6722UTTGD3+T?
All MAX6722UTTGD3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6722UTTGD3+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 MAX6722UTTGD3+T part is unused and in its original packaging.
Return procedure for MAX6722UTTGD3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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