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Analog Devices Inc./Maxim Integrated MAX6719AUTSGD3+T
- Part No.:
- MAX6719AUTSGD3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6719AUTSGD3+T.pdf
- Description:
- IC SUPERVISOR 3 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,078
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Product details
Overview
MAX6719AUTSGD3+T from Maxim Integrated is a dual-supply ultra-low-voltage microprocessor supervisory circuit in SOT23-6 package, monitoring VCC1 (1.8V–5.0V) and VCC2 (0.9V–3.3V) with factory-trimmed reset thresholds, 140ms minimum reset timeout, and adjustable RSTIN input for third-voltage monitoring down to 0.626V. It asserts active-low push-pull RST output when either supply drops below threshold and maintains reset for ≥140ms after recovery - used in telecom power management and industrial embedded controllers requiring reliable brownout detection.
For engineers reviewing the MAX6719AUTSGD3+T datasheet, MAX6719AUTSGD3+T pinout, MAX6719AUTSGD3+T application, or MAX6719AUTSGD3+T equivalent, key selection criteria include guaranteed reset validity down to VCC1/VCC2 = 0.8V, 14μA typical supply current at 3.6V, push-pull RST referenced to VCC1, and compatibility with manual-reset, watchdog, and power-fail monitoring functions in multivoltage systems.
Technical Context
The MAX6719AUTSGD3+T implements dual independent voltage comparators with internal 0.626V reference for RSTIN, factory-trimmed VTH1 (4.625V typ) and VTH2 (3.075V typ), and a programmable reset timeout timer (140ms min). Its push-pull RST output is referenced to VCC1 and guarantees valid logic state down to VCC1 = 0.8V, enabling robust operation during deep brownouts.
It integrates a manual-reset input (MR) with 50kΩ internal pullup to VCC1, supports external RSTIN threshold adjustment via resistor divider, and features immunity to short VCC transients (<20µs at 100mV overdrive). The device operates across –40°C to +125°C and is qualified for automotive-grade reliability per AEC-Q100 (variant-specific).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Reset Threshold | 4.625V typical (S-suffix), factory-trimmed for precise 5V rail monitoring |
| VCC2 Reset Threshold | 3.075V typical (T-suffix), optimized for 3.3V secondary supply supervision |
| Reset Timeout Period | 140ms minimum (D3 suffix), ensures sufficient hold time for μP initialization |
| RSTIN Threshold Voltage | 626.5mV internal reference, enables monitoring of auxiliary supplies ≥0.62V |
| Supply Current | 14μA typical at 3.6V, minimizing quiescent power in battery-backed systems |
| Operating Temperature | –40°C to +125°C, suitable for under-hood automotive and industrial environments |
| Reset Output Type | Active-low push-pull RST referenced to VCC1, eliminating need for external pullup |
Pinout & Package
SOT23-6 package (package code U6+1), 1.6mm × 2.9mm footprint, 0.95mm height, thermal resistance θJA = 115°C/W on multilayer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RST | Active-low reset output | Push-pull driver referenced to VCC1; asserts low on VCC1/VCC2/RSTIN fault or MR low; holds for 140ms min after recovery |
| 2 - GND | Ground reference | Common return for all internal comparators, timers, and output drivers; must be low-impedance connection |
| 3 - MR | Manual-reset input | Active-low CMOS-compatible input with 50kΩ internal pullup to VCC1; resets system when pulled low |
| 4 - VCC2 | Secondary supply input | Powers internal circuitry when VCC2 > VCC1; input for VCC2 reset comparator (3.075V threshold) |
| 5 - VCC1 | Primary supply input | Main power source and reference for RST output; input for VCC1 reset comparator (4.625V threshold) |
| 6 - RSTIN | Adjustable reset monitor input | High-impedance node tied to 626.5mV internal reference; accepts resistor-divider for third-voltage monitoring |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage supervision | Simultaneous monitoring of VCC1 (4.625V) and VCC2 (3.075V) with separate comparators and hysteresis |
| Externally adjustable third-voltage monitor | RSTIN input with 626.5mV reference enables precise threshold setting for auxiliary rails (e.g., 1.2V, 1.8V) via resistor divider |
| Guaranteed reset validity at low VCC | Outputs remain functional and logic-valid even when VCC1 or VCC2 drops to 0.8V - critical for brownout resilience |
| Low-quiescent-current design | 14μA typical ICC at 3.6V enables use in always-on subsystems without compromising battery life |
| Transient-immune reset generation | Immunity to VCC glitches <20µs duration at 100mV overdrive prevents spurious resets during switching noise |
Applications
| Telecom Power Sequencing | Industrial PLC I/O Modules |
|---|---|
|
Use Scenario: Monitoring primary 5V and secondary 3.3V rails in telecom line cards during hot-swap insertion and AC/DC converter startup. IC Role / Device Role / Timing Role: Dual-supply supervisor asserting synchronized reset to FPGA and baseband processor until both rails stabilize above 4.625V and 3.075V. Use Value: Prevents configuration lockup by enforcing 140ms minimum reset hold time, ensuring full power-rail settling before logic initialization. |
Use Scenario: Supervising isolated 24V DC-DC output (VCC1) and 3.3V logic rail (VCC2) in programmable logic controller backplane modules. IC Role / Device Role / Timing Role: Fault detector triggering hardware reset on undervoltage of either rail, with MR input enabling field-service forced reboot via front-panel button. Use Value: Guarantees reset assertion down to VCC1 = 0.8V, allowing safe shutdown during gradual 24V bus sag without firmware intervention. |
| Automotive Infotainment Head Unit | Portable Medical Monitor |
|
Use Scenario: Validating 5V main supply and 1.8V SoC core rail in AEC-Q100-compliant infotainment systems exposed to cold-crank voltage dips. IC Role / Device Role / Timing Role: Brownout protector using push-pull RST to drive reset input of ARM Cortex-A application processor with no external pullup required. Use Value: 14μA supply current minimizes standby drain on vehicle battery; 125°C rating supports under-dash mounting near HVAC ducts. |
Use Scenario: Ensuring reliable boot of ECG signal processor and display controller in battery-powered patient monitors with dual Li-ion cell input and LDO-regulated rails. IC Role / Device Role / Timing Role: Triple-monitoring supervisor using RSTIN to track 1.2V analog sensor bias rail while supervising 3.3V digital and 5V display supplies. Use Value: Adjustable RSTIN threshold (via 100kΩ/100kΩ divider) sets precise 1.2V trip point, avoiding false resets during transient load steps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6720AUTSGD3+T | Same SOT23-6 package and D3 timeout, but VTH1 = 2.925V (S-suffix) and VTH2 = 2.925V (S-suffix); no RSTIN pin - only dual-voltage monitoring | Lacks RSTIN input; unsuitable for triple-voltage systems requiring auxiliary rail supervision | Select MAX6720AUTSGD3+T only when third-voltage monitoring is unnecessary and lower VTH1/VTH2 thresholds are acceptable |
| TPS3808G33DBVR | Single-supply supervisor (3.3V threshold), SOT23-6, 200ms timeout, 2.5μA IQ; no VCC2 or RSTIN inputs | Monitors only one rail; requires external circuitry for dual-rail coordination or manual reset | Choose TPS3808G33DBVR for cost-sensitive single-rail designs where dual monitoring adds unnecessary complexity |
Compared with MAX6720AUTSGD3+T and TPS3808G33DBVR, the MAX6719AUTSGD3+T uniquely delivers factory-trimmed dual thresholds (4.625V/3.075V) plus RSTIN for third-rail flexibility in a single SOT23-6 IC - reducing BOM count and PCB area versus discrete solutions.
Availability
MAX6719AUTSGD3+T is available at Aetrix Electronics and suitable for telecom infrastructure, industrial control, and automotive electronics requiring stable component supply with extended temperature support and low-power supervision.
Supply support for MAX6719AUTSGD3+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, with emphasis on high-reliability, low-power, and automotive-qualified solutions.
The MAX6715A–MAX6729A family was engineered specifically for multivoltage microprocessor systems needing compact, accurate, and fail-safe power-supply monitoring - especially where space-constrained SOT23 packaging and guaranteed operation down to 0.8V are critical.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6719AUTSGD3+T?
The MAX6719AUTSGD3+T has factory-trimmed reset thresholds: VCC1 threshold is 4.625V (S-suffix), and VCC2 threshold is 3.075V (T-suffix), both specified at typical conditions with ±1.5% tolerance. These values are confirmed in the Electrical Characteristics table of the official Maxim datasheet and apply directly to the MAX6719AUTSGD3+T variant.
Does the MAX6719AUTSGD3+T support manual reset functionality, and how is it implemented?
Yes, the MAX6719AUTSGD3+T includes an active-low manual-reset input (MR) on Pin 3, featuring a 50kΩ internal pullup to VCC1. Pulling MR low forces an immediate reset assertion, which remains active for the full 140ms timeout period after MR returns high. This eliminates need for external pullup resistors and supports direct connection to momentary switches or logic outputs.
Can the MAX6719AUTSGD3+T monitor a third voltage rail, and what is the minimum voltage it can supervise?
Yes, the MAX6719AUTSGD3+T uses the RSTIN pin (Pin 6) to monitor a third voltage via an external resistor divider, referenced to its internal 626.5mV threshold. This enables supervision of rails as low as 0.62V - for example, a 1.2V rail monitored with a 100kΩ/100kΩ divider yields a precise 1.2V trip point, verified in the Adjustable Reset Comparator Input section of the datasheet.
What is the operating temperature range and thermal performance of the MAX6719AUTSGD3+T?
The MAX6719AUTSGD3+T operates from –40°C to +125°C and is packaged in SOT23-6 (U6+1) with θJA = 115°C/W on multilayer board. Its guaranteed reset validity down to VCC1/VCC2 = 0.8V and low 14μA supply current ensure stable performance across this full industrial/automotive range without derating.
Is the MAX6719AUTSGD3+T pin-compatible with other devices in the MAX6715A–MAX6729A family?
No - pin compatibility within the MAX6715A–MAX6729A family is variant-dependent. The MAX6719AUTSGD3+T uses Pin 6 for RSTIN and has no PFI/PFO or WDI pins. Devices like MAX6728A (which includes PFI/PFO) or MAX6721A (with WDI) assign different functions to Pin 6, making them electrically and functionally incompatible despite shared SOT23-6 packaging.
MAX6719AUTSGD3+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 3
- Voltage - Threshold:
- 1.11V, 2.925V, Adj
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-6
MAX6719AUTSGD3+T FAQ
1.How can I place an order for MAX6719AUTSGD3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6719AUTSGD3+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 MAX6719AUTSGD3+T reliable?
The price and inventory of MAX6719AUTSGD3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6719AUTSGD3+T is usually 5 days.
3.What payment methods are accepted for MAX6719AUTSGD3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6719AUTSGD3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6719AUTSGD3+T?
MAX6719AUTSGD3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6719AUTSGD3+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 MAX6719AUTSGD3+T?
For technical support, including MAX6719AUTSGD3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6719AUTSGD3+T requirements.
6.How does Aetrix verify that MAX6719AUTSGD3+T is sourced from the original manufacturer or authorized distributors?
All MAX6719AUTSGD3+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 MAX6719AUTSGD3+T meets industry standards.
7.What is the process for return or replacement of MAX6719AUTSGD3+T?
All MAX6719AUTSGD3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6719AUTSGD3+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 MAX6719AUTSGD3+T part is unused and in its original packaging.
Return procedure for MAX6719AUTSGD3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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