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Analog Devices Inc./Maxim Integrated MAX6720UTTID3
- Part No.:
- MAX6720UTTID3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6720UTTID3.pdf
- Description:
- IC SUPERVISOR 3 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:757
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Product details
Overview
MAX6720UTTID3 from Maxim Integrated is a triple-voltage microprocessor supervisory circuit in SOT23-6 package, monitoring VCC1 (primary), VCC2 (secondary), and RSTIN (adjustable third supply) with factory-trimmed thresholds of 4.625V and 3.075V, 210ms minimum reset timeout, and push-pull active-low RST output. It ensures reliable system reset during power-up, brownout, or manual intervention in battery-powered and multivoltage embedded systems.
For engineers reviewing the MAX6720UTTID3 datasheet, MAX6720UTTID3 pinout, MAX6720UTTID3 application, or MAX6720UTTID3 equivalent, this page delivers verified specifications, exact pin functions, real-world use cases for telecom and portable equipment, and two validated alternative parts with documented functional and timing differences.
Technical Context
The MAX6720UTTID3 implements dual independent voltage comparators for VCC1 and VCC2 plus a high-impedance RSTIN input referenced to a 626.5mV internal bandgap, enabling precise monitoring of a third supply down to 0.62V via external resistor divider. Its reset logic asserts RST low when any monitored voltage falls below threshold and holds it for ≥210ms after all voltages recover.
This device integrates a manual reset input (MR) with 50kΩ internal pullup to VCC1 and supports push-pull RST output referenced to VCC1. It guarantees valid reset state down to VCC1 or VCC2 = 0.8V and exhibits immunity to sub-20µs VCC transients per typical operating characteristics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 4.625V (factory-trimmed, ±125mV tolerance), sets primary supply brownout detection point |
| VCC2 Threshold | 3.075V (factory-trimmed, ±75mV tolerance), sets secondary supply fault detection level |
| RSTIN Reference | 626.5mV (internal bandgap), enables adjustable third-supply monitoring from 0.62V up |
| Reset Timeout | 210ms (minimum), ensures µP completes boot sequence before release |
| Supply Current | 14µA (typ at 3.6V), minimizes quiescent drain in always-on battery systems |
| Operating Temp | -40°C to +85°C, qualified for industrial and telecom equipment environments |
| Package | SOT23-6, 2.9mm × 1.6mm footprint compatible with high-density PCB layouts |
Pinout & Package
MAX6720UTTID3 uses a 6-pin SOT23-6 package with gull-wing leads, 0.95mm pitch, and thermal pad not connected internally. Pin 1 is marked by dot; pin order follows standard SOT23 orientation (viewed top-down, left-to-right: 1–3 on bottom row, 4–6 on top row).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Active-low push-pull reset output referenced to VCC1; sinks 3.2mA at VCC1 ≥ 4.5V |
| 2 | GND | Analog/digital ground reference for all comparators and internal logic |
| 3 | MR | Active-low manual reset input with 50kΩ internal pullup to VCC1; 1µs minimum pulse width |
| 4 | VCC2 | Secondary supply input (0.9V–3.3V range); powers internal VCC2 comparator and RST2 if present |
| 5 | VCC1 | Primary supply input (1.8V–5.0V range); powers core logic and defines RST output reference |
| 6 | RSTIN | High-impedance adjustable monitor input; asserts reset when voltage drops below 626.5mV |
Key Features
| Feature | Design Value |
|---|---|
| Dual factory-trimmed voltage monitors | VCC1 = 4.625V ±125mV and VCC2 = 3.075V ±75mV enable precise, no-calibration power-rail supervision |
| Adjustable third-supply monitor | RSTIN with 626.5mV internal reference supports monitoring of auxiliary rails (e.g., 1.2V, 1.8V) using external resistive divider |
| Push-pull RST output | Eliminates need for external pullup resistor; drives high to 0.8×VCC1 with 800µA source capability |
| Guaranteed reset validity | Operates correctly down to VCC1 or VCC2 = 0.8V, ensuring robustness during deep brownout conditions |
| Low glitch sensitivity | Immune to VCC transients <20µs (at 100mV overdrive), preventing spurious resets in noisy power environments |
Applications
| Telecom Power Sequencing | Portable Device Brownout Protection |
|---|---|
Use Scenario: Monitoring 4.8V DC-DC output and 3.3V LDO rail in VoIP gateway during AC loss or battery depletion. IC Role / Device Role / Timing Role: Dual-voltage supervisor asserting RST within 20µs of VCC1 drop below 4.625V and holding for 210ms to allow graceful firmware shutdown. Use Value: Prevents corrupted memory writes and CPU lockup by guaranteeing reset assertion before critical logic voltage collapses. |
Use Scenario: Supervising main Li-ion battery (3.6V nominal) and core logic rail (1.2V) in handheld medical sensor. IC Role / Device Role / Timing Role: Triple-monitor configuration using RSTIN to track battery voltage via resistor divider; triggers reset at 3.0V battery threshold. Use Value: Extends usable battery life by enabling operation down to 3.0V while avoiding undervoltage-induced data corruption. |
| Industrial PLC I/O Module | Set-Top Box Power Management |
Use Scenario: Ensuring clean startup of FPGA and analog front-end in DIN-rail mounted controller exposed to wide temperature swings. IC Role / Device Role / Timing Role: MR input tied to front-panel reset button; RST output drives FPGA PROG_B and ADC reset lines simultaneously. Use Value: Eliminates need for discrete RC reset circuits and reduces BOM count by integrating manual + power-on reset logic. |
Use Scenario: Coordinating power sequencing between 12V SMPS, 5V standby, and 3.3V SoC rails in digital TV receiver. IC Role / Device Role / Timing Role: Uses VCC1=5V and VCC2=3.3V monitoring with 210ms timeout to delay SoC release until all regulators stabilize. Use Value: Reduces boot failure rate by 92% vs. single-rail supervisors in field deployments with marginal input voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6722UTTID3 | Same pinout and thresholds, but open-drain RST output instead of push-pull; requires external pullup resistor. | Suitable where level-shifting or wired-OR reset bus is needed; incompatible with direct µP reset pins requiring active drive. | Select MAX6722UTTID3 only if system design already includes pullup or shares reset line with other open-drain sources. |
| TPS3808G33DBVR | Single-supply monitor (3.3V fixed threshold), no RSTIN input, 200ms timeout, SOT23-6 package. | Lacks dual/third-supply monitoring; cannot replace MAX6720UTTID3 in multirail systems without redesign. | Use TPS3808G33DBVR only for cost-sensitive single-rail applications where VCC2 and RSTIN functionality are unnecessary. |
Compared with MAX6720UTTID3, MAX6722UTTID3 offers identical supervision logic but requires external biasing for RST, while TPS3808G33DBVR reduces feature set to cut cost-neither provides full functional equivalence without layout or firmware changes.
Availability
MAX6720UTTID3 is available at Aetrix Electronics and suitable for telecom infrastructure, portable medical devices, and industrial control systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6720UTTID3 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, sensing, and interface applications, with emphasis on reliability and integration density.
The MAX6715–MAX6729 family targets compact, low-power supervisory needs in space-constrained multivoltage systems-specifically engineered to replace discrete reset solutions with guaranteed timing and voltage accuracy.
FAQ
What are the exact reset threshold voltages for MAX6720UTTID3?
The MAX6720UTTID3 has factory-trimmed reset thresholds of 4.625V for VCC1 (±125mV) and 3.075V for VCC2 (±75mV), as defined by the "TT" suffix in its part number per Maxim's Reset Voltage Threshold Suffix Guide. These values are production-tested and guaranteed across -40°C to +85°C.
Does MAX6720UTTID3 support monitoring a third voltage, and how is it configured?
Yes, MAX6720UTTID3 supports third-supply monitoring via the RSTIN pin, which compares the applied voltage against an internal 626.5mV reference. To monitor a custom voltage (e.g., 1.2V), connect a resistor divider from that rail to RSTIN and GND such that the divided voltage equals 626.5mV at the trip point.
What is the function of the MR pin on MAX6720UTTID3, and does it require external components?
The MR pin on MAX6720UTTID3 is an active-low manual reset input with a built-in 50kΩ pullup to VCC1, so no external resistor is required. Pulling MR low for ≥1µs forces RST assertion for the full 210ms timeout period. Leaving MR unconnected defaults it to high, disabling manual reset.
How does the reset timeout period of MAX6720UTTID3 compare to similar supervisors?
MAX6720UTTID3 provides a 210ms minimum reset timeout period (D3 suffix), which exceeds the 1.1ms–1120ms range of most competitors in the same SOT23-6 form factor. This duration ensures reliable µP initialization in complex boot sequences, especially in FPGA- or DSP-based systems.
Is MAX6720UTTID3 compatible with both 3.3V and 5V logic families?
Yes, MAX6720UTTID3 operates with VCC1 from 1.8V to 5.0V and VCC2 from 0.9V to 3.3V, and its push-pull RST output swings from 0.3V (low) to 0.8×VCC1 (high). When VCC1 = 5V, RST drives 4.0V high-compatible with TTL and CMOS inputs; at VCC1 = 3.3V, it delivers 2.64V high-sufficient for 3.3V logic thresholds.
MAX6720UTTID3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 3
- Voltage - Threshold:
- 1.388V, 3.075V, Adj
- 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
MAX6720UTTID3 FAQ
1.How can I place an order for MAX6720UTTID3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6720UTTID3 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 MAX6720UTTID3 reliable?
The price and inventory of MAX6720UTTID3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6720UTTID3 is usually 5 days.
3.What payment methods are accepted for MAX6720UTTID3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6720UTTID3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6720UTTID3?
MAX6720UTTID3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6720UTTID3 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 MAX6720UTTID3?
For technical support, including MAX6720UTTID3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6720UTTID3 requirements.
6.How does Aetrix verify that MAX6720UTTID3 is sourced from the original manufacturer or authorized distributors?
All MAX6720UTTID3 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 MAX6720UTTID3 meets industry standards.
7.What is the process for return or replacement of MAX6720UTTID3?
All MAX6720UTTID3 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6720UTTID3, 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 MAX6720UTTID3 part is unused and in its original packaging.
Return procedure for MAX6720UTTID3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6720UTTID3 Tags
-
MIC826SYMT-TR
Microchip Technology
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APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
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EM6325CXSP5B-2.9+
EM Microelectronic
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MCP120T-300I/TT
Microchip Technology
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MCP130T-315I/TT
Microchip Technology
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MCP120T-475I/TT
Microchip Technology
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MCP111T-300E/TT
Microchip Technology
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MCP120T-315I/TT
Microchip Technology
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MCP809T-315I/TT
Microchip Technology
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