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Analog Devices Inc./Maxim Integrated MAX6719UTMRD3+
- Part No.:
- MAX6719UTMRD3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- -
- Datasheet:
-
MAX6719UTMRD3+.pdf
- Description:
- MAX6719UTMRD3+
- Quantity:
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Product details
Overview
MAX6719UTMRD3+ from Maxim Integrated is a triple-voltage microprocessor supervisory circuit in SOT23-6 package, monitoring VCC1 (4.625V threshold), VCC2 (3.075V threshold), and an externally adjustable RSTIN input (626mV reference). It asserts active-low open-drain reset for ≥210ms after any supply drop, supports manual reset and watchdog timer, and operates from -40°C to +85°C in multivoltage embedded systems.
For engineers reviewing the MAX6719UTMRD3+ datasheet, MAX6719UTMRD3+ pinout, MAX6719UTMRD3+ application, or MAX6719UTMRD3+ equivalent, key selection criteria include dual-supply monitoring with factory-trimmed thresholds, 210ms minimum reset timeout, guaranteed reset validity down to VCC1/VCC2 = 0.8V, low 14µA typical supply current, and compatibility with battery-operated and telecom power architectures.
Technical Context
The MAX6719UTMRD3+ integrates three independent voltage monitors: primary (VCC1), secondary (VCC2), and auxiliary (RSTIN) with internal 626mV reference. Its reset logic combines OR-gated fault detection across all inputs and a monostable timeout circuit ensuring ≥210ms reset assertion after recovery.
It features a dedicated open-drain RST output referenced to VCC1, internal 50kΩ MR pullup, and no watchdog or PFI/PFO functions-confirmed by Selector Guide and Pin Description tables. Reset threshold tempco is 20ppm/°C, and immunity to sub-20µs VCC transients is specified.
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 undervoltage trip |
| RSTIN Reference | 626mV internal reference, enables third-voltage monitoring via external resistor divider |
| Reset Timeout | 210ms minimum, ensures sufficient processor reset hold time after supply recovery |
| Supply Current | 14µA typical at 3.6V, minimizes quiescent power in always-on supervision circuits |
| Operating Temp | -40°C to +85°C, supports industrial and telecom equipment deployment |
| Reset Validity | Guaranteed down to VCC1 or VCC2 = 0.8V, maintains correct logic state during deep brownout |
Pinout & Package
MAX6719UTMRD3+ uses a 6-pin SOT23-6 package with gull-wing leads, 1.27mm pitch, and 2.9mm × 1.6mm footprint. Thermal resistance θJA is 150°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Active-low open-drain reset output; requires external pullup; asserted when any monitored voltage falls below threshold |
| 2 | GND | Ground reference for all internal comparators and logic |
| 3 | MR | Active-low manual reset input; internally pulled up to VCC1 with 50kΩ; resets system on logic-low pulse ≥1µs |
| 4 | VCC2 | Secondary supply input; powers internal circuitry when > VCC1 and sets VCC2 monitor reference |
| 5 | VCC1 | Primary supply input; powers device when > VCC2 and sets VCC1 monitor reference |
| 6 | RSTIN | Adjustable reset comparator input; high-impedance node tied to 626mV internal reference; used for third-voltage monitoring |
Key Features
| Feature | Design Value |
|---|---|
| Triple-voltage monitoring | Simultaneous supervision of VCC1 (4.625V), VCC2 (3.075V), and RSTIN (via 626mV reference) eliminates need for discrete supervisors |
| Factory-trimmed thresholds | ±125mV VCC1 and ±75mV VCC2 accuracy reduces calibration overhead in production test |
| 210ms reset timeout | Guaranteed minimum hold time ensures reliable µP initialization across temperature and voltage corners |
| 0.8V reset validity | Correct RST logic state maintained even as VCC1 or VCC2 collapses to 0.8V, enabling robust brownout recovery |
| 14µA supply current | Enables multi-year operation in coin-cell–powered backup supervision and portable devices |
Applications
| Telecom Power Sequencing | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Monitoring dual DC/DC outputs (5V core, 3.3V I/O) in base station power management units. IC Role / Device Role / Timing Role: Triple-supervisory IC asserting coordinated reset to FPGA and ARM processor upon either rail collapse. Use Value: Prevents partial initialization and latch-up by enforcing 210ms reset hold while both rails stabilize post-power-cycle. | Use Scenario: Supervising 24V field bus supply and 5V logic rail in programmable logic controller backplanes. IC Role / Device Role / Timing Role: Voltage monitor detecting undervoltage on both rails and triggering fail-safe shutdown sequence. Use Value: Guarantees reset remains valid down to 0.8V on either rail, enabling safe state capture before complete power loss. |
| Battery-Powered Medical Sensors | Set-Top Box Power Management |
Use Scenario: Monitoring Li-ion battery voltage (VCC1) and regulated 1.8V sensor rail (VCC2) in wearable ECG monitors. IC Role / Device Role / Timing Role: Low-quiescent supervisor providing early warning and controlled reset before battery depletion causes data corruption. Use Value: 14µA typical ICC enables >5-year shelf life with CR2032 coin cell; RSTIN allows optional battery fuel gauge integration. | Use Scenario: Coordinating 12V main supply and 3.3V SoC rail in digital video recorder power trees. IC Role / Device Role / Timing Role: Dual-rail supervisor asserting reset to media processor and DDR controller during AC dropout events. Use Value: Factory-trimmed 4.625V/3.075V thresholds match standard ATX-derived power tolerances without external resistors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triple-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6720UTMRD3+ | Same pinout, identical VCC1/VCC2 thresholds and 210ms timeout, but push-pull RST output instead of open-drain | Requires no external pullup resistor; incompatible with bidirectional µP reset pins needing open-drain drive | Select MAX6720UTMRD3+ only if system design uses push-pull reset interface and avoids contention with µP I/O |
| TPS3808G33DBVR | Single-supply monitor (3.3V only), no RSTIN input, fixed 200ms timeout, 1.6µA supply current | Lacks triple-monitoring capability; suitable only for single-rail systems where auxiliary voltage monitoring is handled separately | Choose TPS3808G33DBVR for cost-sensitive, single-rail applications where ultra-low ICC outweighs missing RSTIN functionality |
Compared with MAX6719UTMRD3+, MAX6720UTMRD3+ offers push-pull reset drive for simplified layout but loses open-drain flexibility, while TPS3808G33DBVR trades triple monitoring for 10× lower ICC and lower BOM count in single-rail designs.
Availability
MAX6719UTMRD3+ is available at Aetrix Electronics and suitable for telecom power sequencing, industrial PLC I/O modules, battery-powered medical sensors, and set-top box power management requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6719UTMRD3+ 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, mixed-signal, and power management ICs for demanding industrial, automotive, and communications applications.
The MAX6715–MAX6729 family delivers ultra-low-voltage, multirail supervision in miniature SOT23 packages for space-constrained embedded systems requiring high reliability and minimal quiescent power.
FAQ
What is the reset timeout period for MAX6719UTMRD3+?
The MAX6719UTMRD3+ has a guaranteed minimum reset timeout period of 210ms. This value is factory-set by the 'D3' suffix in the part number and represents the minimum duration the RST output remains asserted after all monitored supplies (VCC1, VCC2, RSTIN) rise above their respective thresholds. The actual timeout may vary slightly with temperature and supply voltage but will not fall below this specification.
Does MAX6719UTMRD3+ support watchdog functionality?
No, MAX6719UTMRD3+ does not include watchdog functionality. According to the Selector Guide and Pin Description tables, the MAX6719 variant lacks WDI (Watchdog Input) pin support. Watchdog capability is present only in MAX6721 through MAX6729 variants. The MAX6719UTMRD3+ provides triple-voltage monitoring, manual reset, and fixed 210ms timeout-but no watchdog timer.
What are the exact reset threshold voltages for MAX6719UTMRD3+?
The MAX6719UTMRD3+ has factory-trimmed reset thresholds of 4.625V for VCC1 (with ±125mV tolerance) and 3.075V for VCC2 (with ±75mV tolerance). These values are encoded in the 'MR' suffix per the Reset Voltage Threshold Suffix Guide. The RSTIN input uses a fixed 626mV internal reference for externally adjustable third-voltage monitoring.
Is MAX6719UTMRD3+ compatible with bidirectional microprocessor reset pins?
Yes, MAX6719UTMRD3+ is compatible with bidirectional µP reset pins because it features an open-drain RST output. This allows safe connection to processors with shared reset I/O lines without logic contention. An external pullup resistor (typically 10kΩ to VCC1) is required, and no series resistor is needed-unlike push-pull variants which require isolation to prevent conflict.
What is the supply current consumption of MAX6719UTMRD3+?
The MAX6719UTMRD3+ consumes 14µA typical supply current at 3.6V, as specified in the Electrical Characteristics table. This value represents total ICC (ICC1 + ICC2) under nominal conditions and remains stable across the -40°C to +85°C operating range, making it suitable for battery-backed and energy-sensitive applications.
MAX6719UTMRD3+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- -
- Number of Voltages Monitored:
- -
- Voltage - Threshold:
- -
- Output:
- -
- Reset:
- -
- Reset Timeout:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX6719UTMRD3+ FAQ
1.How can I place an order for MAX6719UTMRD3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6719UTMRD3+ 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 MAX6719UTMRD3+ reliable?
The price and inventory of MAX6719UTMRD3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6719UTMRD3+ is usually 5 days.
3.What payment methods are accepted for MAX6719UTMRD3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6719UTMRD3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6719UTMRD3+?
MAX6719UTMRD3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6719UTMRD3+ 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 MAX6719UTMRD3+?
For technical support, including MAX6719UTMRD3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6719UTMRD3+ requirements.
6.How does Aetrix verify that MAX6719UTMRD3+ is sourced from the original manufacturer or authorized distributors?
All MAX6719UTMRD3+ 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 MAX6719UTMRD3+ meets industry standards.
7.What is the process for return or replacement of MAX6719UTMRD3+?
All MAX6719UTMRD3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6719UTMRD3+, 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 MAX6719UTMRD3+ part is unused and in its original packaging.
Return procedure for MAX6719UTMRD3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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