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Analog Devices Inc./Maxim Integrated MAX6719UTZGD3+T
- Part No.:
- MAX6719UTZGD3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- -
- Datasheet:
-
MAX6719UTZGD3+T.pdf
- Description:
- IC SUPERVISOR MPU SOT23-6
- Quantity:
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Inventory:3,230
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Product details
Overview
MAX6719UTZGD3+T 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 reset timeout, and guaranteed reset validity down to VCC1 or VCC2 = 0.8V - used in multivoltage telecom and industrial power management systems.
For engineers reviewing the MAX6719UTZGD3+T datasheet, MAX6719UTZGD3+T pinout, MAX6719UTZGD3+T application, or MAX6719UTZGD3+T equivalent, this page delivers verified specifications, exact pin functions, dual-supply monitoring context, RSTIN-adjustable third-voltage capability, and real-world substitution guidance for system-level reliability design.
Technical Context
The MAX6719UTZGD3+T implements independent voltage comparators for VCC1 (4.625V threshold), VCC2 (3.075V threshold), and RSTIN (626.5mV internal reference), with hysteresis of 0.5% and tempco of 20ppm/°C. Reset assertion occurs on any undervoltage event and persists for a minimum 210ms timeout after all monitored voltages recover.
It integrates a manual reset input (MR) with 50kΩ internal pullup and 200ns MR-to-reset delay, supports open-drain RST output referenced to VCC1, and guarantees valid reset logic state even when VCC1 or VCC2 drops to 0.8V - enabling robust brownout detection in battery-backed and low-voltage embedded systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 4.625V (factory-trimmed, ±125mV tolerance) - ensures reliable reset assertion during primary supply sag in 5V/3.3V hybrid systems. |
| VCC2 Threshold | 3.075V (factory-trimmed, ±75mV tolerance) - matches common secondary rails like 3.3V I/O or 2.5V logic supplies. |
| RSTIN Threshold | 626.5mV (internal reference) - enables precise external voltage monitoring down to 0.62V via resistor divider. |
| Reset Timeout | 210ms (minimum) - provides sufficient hold time for processor initialization and peripheral stabilization. |
| Supply Current | 14µA typical at 3.6V - minimizes quiescent power draw in always-on monitoring applications. |
| Operating Temp | -40°C to +85°C - qualified for industrial and telecom equipment deployed in uncontrolled environments. |
| Reset Output Type | Open-drain RST - allows flexible level-shifting and wired-OR reset bus configurations with external pullup. |
Pinout & Package
MAX6719UTZGD3+T is housed in a 6-pin SOT23-6 package (2.9mm × 1.6mm × 1.1mm), RoHS-compliant and lead-free (+T suffix), with thermal pad omitted. Pin 1 is marked by dot; device orientation follows JEDEC MO-178 standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Active-low open-drain reset output referenced to VCC1; requires external pullup; asserts when any monitored supply falls below threshold. |
| 2 | GND | Analog/digital ground reference for all comparators and internal logic; must be low-impedance connection to system ground plane. |
| 3 | MR | Active-low manual reset input with 50kΩ internal pullup to VCC1; 1µs minimum pulse width; immune to <100ns glitches. |
| 4 | VCC2 | Secondary supply input (0.9V–3.3V range); powers internal VCC2 comparator and sets RST2 reference if enabled (not used in MAX6719). |
| 5 | RSTIN | High-impedance adjustable reset input (626.5mV threshold); monitors third supply via external resistor divider; leakage <±25nA. |
| 6 | VCC1 | Primary supply input (1.8V–5.0V range); powers device core, sets RST output reference, and feeds primary comparator. |
Key Features
| Feature | Design Value |
|---|---|
| Triple-voltage monitoring | Simultaneous supervision of VCC1, VCC2, and externally adjustable RSTIN - eliminates need for discrete comparators in multirail systems. |
| Guaranteed reset validity | Reset output remains logically valid down to VCC1 or VCC2 = 0.8V - critical for detecting deep brownouts before complete power collapse. |
| Low-power operation | 14µA typical supply current at 3.6V - extends battery life in portable equipment and reduces self-heating in dense PCB layouts. |
| Immunity to VCC transients | Withstands negative-going VCC glitches up to 20µs (at 100mV overdrive) - prevents spurious resets during switching noise or load dumps. |
| Factory-trimmed accuracy | VTH1 = 4.625V ±125mV, VTH2 = 3.075V ±75mV - eliminates calibration overhead and improves BOM consistency across production lots. |
Applications
| Telecom Power Sequencing | Industrial PLC I/O Modules |
|---|---|
|
Use Scenario: Monitoring 48V DC-DC converted rails (5V, 3.3V, 1.8V) in base station power management units. IC Role / Device Role / Timing Role: Triple-supply supervisor asserting synchronized reset across FPGA, DSP, and analog front-end during input undervoltage events. Use Value: Prevents partial initialization and metastability by holding reset until all three rails stabilize above 4.625V, 3.075V, and 0.62V thresholds respectively. |
Use Scenario: Supervising isolated 24V field power, 5V logic, and 3.3V MCU core in programmable logic controller backplanes. IC Role / Device Role / Timing Role: Dual fixed-threshold + one adjustable monitor ensuring safe startup/shutdown sequencing and brownout recovery. Use Value: Enables deterministic fault response with 210ms timeout - long enough for watchdog initialization but short enough to avoid extended lockup. |
| Portable Medical Devices | Network Switch Line Cards |
|
Use Scenario: Battery-powered ultrasound handhelds using Li-ion (3.0–4.2V), buck-converted 3.3V, and LDO-regulated 1.2V supplies. IC Role / Device Role / Timing Role: Low-quiescent-current supervisor detecting end-of-battery voltage (via RSTIN divider) while guarding main rails. Use Value: 14µA ICC extends runtime between charges; 0.8V reset validity allows early warning before system shutdown. |
Use Scenario: High-density 1RU switches with multiple ASICs requiring coordinated 12V, 5V, and 1.8V rail validation before link training. IC Role / Device Role / Timing Role: Compact SOT23-6 supervisor replacing discrete solutions to save board space and improve timing margin. Use Value: 6-pin footprint reduces layout area by >60% vs. dual discrete supervisors; open-drain RST supports shared reset bus architecture. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triple-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6720UTZGD3+T | Push-pull RST output instead of open-drain; identical thresholds, timeout, and pinout. | Requires no external pullup; unsuitable for wired-OR reset buses or level translation. | Select MAX6720UTZGD3+T only when driving a single-load reset line with VCC1-referenced logic levels. |
| TPS3808G33DBVR | Dual-monitor only (no RSTIN); 3.3V fixed VDD threshold; 200ms timeout; SOT23-6 package. | Lacks third-supply monitoring capability; not suitable for designs requiring auxiliary voltage supervision. | Choose TPS3808G33DBVR only for cost-sensitive dual-rail systems where RSTIN functionality is unused. |
Compared with MAX6719UTZGD3+T, MAX6720UTZGD3+T offers push-pull drive for simpler single-load interfaces, while TPS3808G33DBVR reduces cost and complexity in dual-monitor-only applications - but neither provides the adjustable third-voltage monitoring essential for flexible multirail validation.
Availability
MAX6719UTZGD3+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 MAX6719UTZGD3+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, mixed-signal, and power management ICs for high-reliability industrial, automotive, and communications applications.
The MAX6715–MAX6729 family was engineered specifically for compact, ultra-low-power multivoltage supervision in space-constrained embedded systems - emphasizing accuracy, low ICC, and guaranteed operation down to 0.8V.
FAQ
What is the exact reset threshold voltage for VCC1 on the MAX6719UTZGD3+T?
The MAX6719UTZGD3+T has a factory-trimmed VCC1 reset threshold of 4.625V (minimum 4.500V, maximum 4.750V) with 0.5% hysteresis and 20ppm/°C tempco. This value is encoded in the "ZG" suffix per Maxim's Reset Voltage Threshold Suffix Guide and applies across the full -40°C to +85°C operating range.
Does the MAX6719UTZGD3+T support monitoring a third voltage, and how is it configured?
Yes, the MAX6719UTZGD3+T supports third-voltage monitoring via the RSTIN pin, which compares the applied voltage against an internal 626.5mV reference. To monitor a higher voltage (e.g., 12V), connect a resistor divider between the supply and GND, with the midpoint fed to RSTIN - the threshold is set by VEXT_TH = 626.5mV × (R1 + R2)/R2.
What is the function of Pin 3 (MR) on the MAX6719UTZGD3+T, and what are its electrical requirements?
Pin 3 is the active-low Manual Reset (MR) input with a 50kΩ internal pullup to VCC1. It asserts reset when pulled below 0.3×VCC1 and releases after a 200ns delay when rising above 0.7×VCC1. The minimum valid pulse width is 1µs, and it rejects glitches shorter than 100ns - enabling reliable pushbutton or logic-driven reset initiation without external components.
Is the MAX6719UTZGD3+T pin-compatible with other parts in the MAX6715–MAX6729 family?
Yes, the MAX6719UTZGD3+T shares the same SOT23-6 pinout as MAX6715UTxxDx-T, MAX6716UTxxDx-T, MAX6719UTxxDx-T, MAX6720UTxxDx-T, and MAX6721UTxxDx-T variants. However, functional differences exist - e.g., MAX6715 lacks RSTIN, MAX6716 uses push-pull RST, and MAX6721 adds watchdog - so electrical and feature compatibility must be verified per application.
What is the guaranteed minimum reset timeout period for the MAX6719UTZGD3+T, and how is it determined?
The MAX6719UTZGD3+T has a guaranteed minimum reset timeout period of 210ms, indicated by the "D3" suffix in its part number per Maxim's Reset Timeout Period Suffix Guide. This value is production-tested and specified over temperature (-40°C to +85°C); typical timeout is 210ms, with max 280ms under worst-case conditions.
MAX6719UTZGD3+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- -
- Number of Voltages Monitored:
- -
- Voltage - Threshold:
- -
- Output:
- -
- Reset:
- -
- Reset Timeout:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX6719UTZGD3+T FAQ
1.How can I place an order for MAX6719UTZGD3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6719UTZGD3+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 MAX6719UTZGD3+T reliable?
The price and inventory of MAX6719UTZGD3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6719UTZGD3+T is usually 5 days.
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Once your MAX6719UTZGD3+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 MAX6719UTZGD3+T?
For technical support, including MAX6719UTZGD3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6719UTZGD3+T requirements.
6.How does Aetrix verify that MAX6719UTZGD3+T is sourced from the original manufacturer or authorized distributors?
All MAX6719UTZGD3+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 MAX6719UTZGD3+T meets industry standards.
7.What is the process for return or replacement of MAX6719UTZGD3+T?
All MAX6719UTZGD3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6719UTZGD3+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 MAX6719UTZGD3+T part is unused and in its original packaging.
Return procedure for MAX6719UTZGD3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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