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Analog Devices Inc./Maxim Integrated MAX6719AUTLTD3+T
- Part No.:
- MAX6719AUTLTD3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6719AUTLTD3+T.pdf
- Description:
- IC SUPERVISOR 3 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:3,681
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Product details
Overview
MAX6719AUTLTD3+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 during supply undervoltage, manual reset, or watchdog timeout-used in telecom power management and industrial embedded controllers.
For engineers reviewing the MAX6719AUTLTD3+T datasheet, MAX6719AUTLTD3+T pinout, MAX6719AUTLTD3+T application, or MAX6719AUTLTD3+T equivalent, key selection criteria include guaranteed reset validity down to VCC1/VCC2 = 0.8V, 14μA typical supply current at 3.6V, immunity to short VCC transients, and support for externally adjustable triple-voltage supervision with 0.626V internal reference.
Technical Context
The MAX6719AUTLTD3+T implements dual independent voltage comparators with hysteresis (0.5% of threshold), a programmable 140ms reset timeout timer, and an integrated push-pull RST output referenced to VCC1. Its RSTIN input accepts external resistor-divider networks to monitor a third supply with 626mV ±15.5mV threshold and <100nA input leakage.
This variant includes manual-reset (MR) input with internal 50kΩ pullup to VCC1 and supports glitch rejection (100ns) and MR-to-RST delay of 200ns. It operates across –40°C to +125°C and guarantees valid reset logic state as long as either VCC1 or VCC2 remains ≥0.8V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Timeout Period | 140ms (min) - ensures sufficient hold time for processor initialization after brownout recovery |
| VCC1 Reset Threshold | 2.925V (typ) - factory-trimmed for 3.0V nominal supply monitoring with ±0.075V tolerance |
| VCC2 Reset Threshold | 1.110V (typ) - factory-trimmed for 1.2V core supply monitoring with ±0.030V tolerance |
| RSTIN Threshold Voltage | 626.5mV (typ) - enables precise third-voltage monitoring via external resistor divider |
| Supply Current (ICC) | 14μA (typ) at 3.6V - minimizes quiescent power in battery-backed or low-power systems |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive and industrial control environments |
| Reset Output Type | Push-pull active-low RST - eliminates need for external pullup and drives directly into μP reset pin |
Pinout & Package
MAX6719AUTLTD3+T is housed in a 6-pin SOT23 package (package code U6+1), with 1.6mm × 2.9mm footprint and 0.95mm height. Thermal resistance θJA is 115°C/W on multilayer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Active-low push-pull reset output referenced to VCC1; asserts when VCC1/VCC2/RSTIN fall below threshold or MR is pulled low |
| 2 | GND | Ground reference for all internal comparators, timers, and output drivers |
| 3 | MR | Active-low manual-reset input with internal 50kΩ pullup to VCC1; 1µs minimum pulse width required |
| 4 | VCC2 | Secondary supply input (0.9V–3.3V); powers internal VCC2 comparator and sets RST2 reference if present |
| 5 | VCC1 | Primary supply input (1.8V–5.0V); powers device core, sets RST output reference, and supplies MR pullup |
| 6 | RSTIN | High-impedance adjustable reset input; monitors third supply via resistor divider with 626.5mV internal reference |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage supervision | Simultaneous monitoring of VCC1 (1.8–5.0V) and VCC2 (0.9–3.3V) with separate factory-trimmed thresholds and hysteresis |
| Externally adjustable third-voltage monitor | RSTIN input with 626.5mV ±15.5mV reference enables monitoring of auxiliary rails (e.g., 1.8V, 2.5V, 3.3V) using two external resistors |
| Guaranteed reset validity down to 0.8V | Ensures correct RST logic state even during deep brownout conditions where VCC1 or VCC2 drops to 0.8V |
| Low-quiescent-current operation | 14μA typical ICC at 3.6V enables use in always-on subsystems without compromising battery life |
| Immunity to short VCC transients | Rejects glitches ≤20µs (at 100mV overdrive) - prevents spurious resets during switching noise or load transients |
Applications
| Telecom Power Sequencing | Industrial PLC I/O Modules |
|---|---|
|
Use Scenario: Monitoring primary 3.3V backplane rail and secondary 1.2V FPGA core supply in carrier-grade line cards. IC Role / Device Role / Timing Role: Dual-supply supervisor asserting synchronized reset to FPGA and baseband processor upon any rail dropout. Use Value: Prevents configuration corruption during hot-swap events by enforcing 140ms reset hold time and validating reset logic down to 0.8V on either rail. |
Use Scenario: Supervising 24V DC input-derived 5V logic rail and isolated 3.3V microcontroller supply in DIN-rail mounted PLC modules. IC Role / Device Role / Timing Role: Ensures deterministic boot sequence by holding reset until both rails stabilize above 4.5V and 3.0V thresholds respectively. Use Value: Eliminates need for discrete RC reset circuits and reduces BOM count while supporting –40°C to +125°C ambient operation. |
| Automotive ADAS Camera ECU | Medical Portable Monitor Battery Backup |
|
Use Scenario: Validating 5V camera sensor supply and 1.8V image processor core voltage in AEC-Q100-compliant vision systems. IC Role / Device Role / Timing Role: Provides fail-safe reset assertion during cold-crank (battery dip to 6V) and load-dump transients. Use Value: Guarantees reset integrity down to VCC1 = 0.8V and rejects sub-20µs transients-critical for ISO 16750-2 compliance. |
Use Scenario: Monitoring main 3.7V Li-ion supply and backup 3.0V supercapacitor rail in portable patient monitors with >24hr runtime. IC Role / Device Role / Timing Role: Triggers controlled shutdown via RSTIN-linked power-fail warning before main supply falls below 3.2V. Use Value: Enables graceful data save using 626.5mV RSTIN reference and external divider-extending usable battery window by ~8%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6720AUTLTD3+T | Identical pinout and electrical specs, but features open-drain RST output instead of push-pull | Requires external pullup resistor; suitable where level-shifting or wired-OR reset bus is needed | Select MAX6720AUTLTD3+T only when open-drain topology is required for system-level reset arbitration |
| TPS3808G33DBVR | Single-supply (3.3V fixed threshold), no VCC2 or RSTIN inputs; 200ms timeout; 2.5μA ICC | Lacks dual-rail monitoring and third-voltage adjustability; limited to single-rail systems | Choose TPS3808G33DBVR only for cost-sensitive, single-rail designs where 3.3V supervision suffices |
Compared with MAX6720AUTLTD3+T and TPS3808G33DBVR, the MAX6719AUTLTD3+T uniquely delivers push-pull RST, dual independent supply monitoring, and RSTIN-based third-rail supervision in one SOT23-6 package-enabling compact, robust power sequencing in multivoltage systems without layout or firmware changes.
Availability
MAX6719AUTLTD3+T is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, automotive ADAS ECUs, and medical portable monitors requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6719AUTLTD3+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 demanding industrial, automotive, and communications applications.
The MAX6715A–MAX6729A family delivers ultra-low-voltage supervisory circuits optimized for multirail embedded systems-emphasizing guaranteed reset validity at brownout, low ICC, and flexible voltage monitoring topologies.
FAQ
What is the factory-trimmed reset threshold for VCC1 on MAX6719AUTLTD3+T?
The MAX6719AUTLTD3+T has a factory-trimmed VCC1 reset threshold of 2.925V (typical), with min/max values of 2.850V and 3.000V respectively. This corresponds to the 'S' suffix in the Reset Voltage Threshold Suffix Guide and is designed for reliable supervision of 3.0V nominal supplies across –40°C to +125°C.
Does MAX6719AUTLTD3+T support monitoring a third supply voltage?
Yes, MAX6719AUTLTD3+T supports third-supply monitoring via its RSTIN pin, which features a precise 626.5mV internal reference voltage. By connecting an external resistor divider between the target supply and GND, designers can set custom trip points-for example, 1.8V monitored with R1 = 180kΩ and R2 = 100kΩ per VEXT_TH = 626mV × ((R1 + R2)/R2).
What is the reset timeout period for MAX6719AUTLTD3+T?
The MAX6719AUTLTD3+T provides a minimum reset timeout period of 140ms, denoted by the 'D3' suffix in its part number. This timeout begins when all monitored supplies rise above their thresholds and ensures the microprocessor remains held in reset long enough to complete full initialization after power-up or brownout recovery.
Is MAX6719AUTLTD3+T compatible with 0.8V supply operation?
Yes, MAX6719AUTLTD3+T guarantees valid reset output logic state as long as either VCC1 or VCC2 remains ≥0.8V. This feature ensures deterministic behavior during deep brownout conditions common in automotive cold-crank or industrial power interruption scenarios-without requiring external biasing components.
What package type and footprint does MAX6719AUTLTD3+T use?
MAX6719AUTLTD3+T uses a 6-pin SOT23 package (outline 21-0058, land pattern 90-0175) with 0.95mm height and 1.6mm × 2.9mm body dimensions. Its U6+1 package code indicates RoHS-compliant lead finish and is compatible with standard SMT reflow profiles including JEDEC J-STD-020 moisture sensitivity level 1.
MAX6719AUTLTD3+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:
- 3.075V, 4.625V, Adj
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-6
MAX6719AUTLTD3+T FAQ
1.How can I place an order for MAX6719AUTLTD3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6719AUTLTD3+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 MAX6719AUTLTD3+T reliable?
The price and inventory of MAX6719AUTLTD3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6719AUTLTD3+T is usually 5 days.
3.What payment methods are accepted for MAX6719AUTLTD3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6719AUTLTD3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6719AUTLTD3+T?
MAX6719AUTLTD3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6719AUTLTD3+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 MAX6719AUTLTD3+T?
For technical support, including MAX6719AUTLTD3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6719AUTLTD3+T requirements.
6.How does Aetrix verify that MAX6719AUTLTD3+T is sourced from the original manufacturer or authorized distributors?
All MAX6719AUTLTD3+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 MAX6719AUTLTD3+T meets industry standards.
7.What is the process for return or replacement of MAX6719AUTLTD3+T?
All MAX6719AUTLTD3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6719AUTLTD3+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 MAX6719AUTLTD3+T part is unused and in its original packaging.
Return procedure for MAX6719AUTLTD3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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