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Analog Devices Inc./Maxim Integrated MAX6719AUTLTD1+T
- Part No.:
- MAX6719AUTLTD1+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6719AUTLTD1+T.pdf
- Description:
- IC SUPERVISOR 3 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MAX6719AUTLTD1+T from Maxim Integrated is a dual-supply ultra-low-voltage microprocessor supervisory circuit in 6-pin SOT23 package, monitoring VCC1 (1.8V–5.0V) and VCC2 (0.9V–3.3V) with factory-trimmed reset thresholds, 1.1ms minimum reset timeout, and RSTIN input for adjustable third-voltage monitoring down to 0.62V. It ensures reliable system reset during brownout in telecom power supplies and battery-operated embedded controllers.
For engineers reviewing the MAX6719AUTLTD1+T datasheet, MAX6719AUTLTD1+T pinout, MAX6719AUTLTD1+T application, or MAX6719AUTLTD1+T equivalent, key selection criteria include dual-rail voltage monitoring capability, guaranteed reset validity down to 0.8V on either supply, low 14µA typical supply current at 3.6V, and compatibility with manual-reset, watchdog, and power-fail signaling in compact industrial designs.
Technical Context
The MAX6719AUTLTD1+T integrates two independent voltage comparators with hysteresis (0.5% of threshold), a precision 626.5mV internal reference for RSTIN, and a programmable reset timeout timer (1.1ms min). Its dual-supply architecture allows simultaneous monitoring of core and I/O rails without external biasing.
It features push-pull or open-drain RST output (configurable per variant), active-low MR input with 50kΩ internal pullup to VCC1, and supports watchdog disable via floating WDI. The device operates across –40°C to +125°C and guarantees correct reset logic state when VCC1 or VCC2 ≥ 0.8V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | VCC1 = 0.8V to 5.5V; VCC2 = 0.8V to 5.5V - enables operation during deep brownout and supports wide-input DC-DC outputs. |
| Reset Timeout Period | 1.1ms (min) - provides sufficient hold time for microprocessor initialization after power recovery. |
| VCC1 Reset Threshold | 4.625V (typ), ±125mV tolerance - factory-trimmed for precise 4.63V nominal trip point on primary rail. |
| VCC2 Reset Threshold | 3.075V (typ), ±75mV tolerance - factory-trimmed for precise 3.08V nominal trip point on secondary rail. |
| RSTIN Threshold Voltage | 626.5mV (typ), ±15.5mV - stable internal reference enabling accurate third-voltage monitoring via resistor divider. |
| Supply Current | 14µA (typ) at 3.6V - minimizes quiescent load in always-on battery-backed systems. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive and industrial control environments. |
Pinout & Package
MAX6719AUTLTD1+T is housed in a 6-pin SOT23 package (package code U6+1), with thermal resistance θJA = 115°C/W on multilayer board. Pin functions are validated per Maxim's official pin description table for MAX6719A variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST/RST1 | Active-low reset output (push-pull); asserted when VCC1/VCC2 drop below threshold or MR pulled low; referenced to VCC1. |
| 2 | GND | System ground reference for all internal comparators and logic. |
| 3 | MR | Active-low manual-reset input with 50kΩ internal pullup to VCC1; 1µs minimum pulse width required. |
| 4 | VCC2 | Secondary supply input powering comparator for VCC2 monitoring and RST2 output (not present on this variant). |
| 5 | VCC1 | Primary supply input powering core logic, VCC1 comparator, and RST output driver. |
| 6 | RSTIN | Adjustable undervoltage monitor input; compares external divided voltage against 626.5mV reference. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneous supervision of VCC1 (1.8–5.0V) and VCC2 (0.9–3.3V) with separate thresholds and hysteresis - eliminates need for two discrete supervisors. |
| Externally adjustable third-voltage monitor | RSTIN input with 626.5mV internal reference enables monitoring of auxiliary rails (e.g., 1.2V, 1.8V, 2.5V) using only two external resistors - reduces BOM count and layout area. |
| Guaranteed reset validity down to 0.8V | Functional reset assertion guaranteed even when VCC1 or VCC2 drops to 0.8V - critical for fail-safe behavior during severe brownout conditions. |
| Low 14µA supply current | Enables use in energy-constrained applications such as coin-cell-powered IoT sensors and backup power domains. |
| Immunity to short VCC transients | Withstands negative-going VCC glitches ≤20µs (at 100mV overdrive) without spurious reset - improves system robustness in noisy power environments. |
Applications
| Telecom Power Management | Industrial PLC I/O Modules |
|---|---|
|
Use Scenario: Monitoring primary 3.3V backplane supply and secondary 1.8V FPGA core rail in carrier-grade line cards. IC Role / Device Role / Timing Role: Dual-rail supervisor asserting active-low RST to halt processor execution upon any rail collapse, with 1.1ms timeout ensuring clean restart. Use Value: Prevents corrupted configuration writes during partial power loss, eliminating field failures caused by inconsistent register states. |
Use Scenario: Supervising 24V-to-5V DC-DC output and isolated 3.3V logic rail in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Provides deterministic reset coordination between analog I/O ASICs and ARM Cortex-M7 host MCU during AC mains interruption. Use Value: Enables deterministic boot sequence recovery without firmware intervention, meeting IEC 61131-2 response-time requirements. |
| Battery-Powered Edge Sensors | Automotive Body Control Units |
|
Use Scenario: Monitoring Li-ion battery voltage (via RSTIN divider) and regulated 1.2V sensor rail in wireless environmental nodes. IC Role / Device Role / Timing Role: Triggers graceful shutdown via RST assertion when battery falls below 3.0V while maintaining valid reset signal until VCC drops to 0.8V. Use Value: Extends usable battery life by avoiding premature shutdown and preserving nonvolatile memory integrity during final discharge phase. |
Use Scenario: Supervising 5V infotainment SoC supply and 3.3V CAN transceiver rail in vehicle door modules. IC Role / Device Role / Timing Role: Dual-threshold detection ensures reset occurs before CAN communication failure, with MR input supporting service-mode reinitialization. Use Value: Meets AEC-Q100 Grade 1 requirements for cold-cranking immunity and prevents bus lock-up during engine start transient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6720AUTLTD1+T | Identical pinout and package; differs only in VCC1 reset threshold (4.375V typ vs. 4.625V) and VCC2 threshold (2.925V typ vs. 3.075V). | Suitable where tighter 4.38V/2.93V thresholds better match system rail tolerances, e.g., 4.4V LDO outputs. | Select MAX6720AUTLTD1+T when system VCC1 nominal is 4.4V instead of 4.63V - no PCB change required. |
| TPS3808G33DBVR | Single-supply (VDD only), no VCC2 input or RSTIN; 3.3V fixed threshold; 200ms timeout (vs. 1.1ms); SOT23-6 package. | Lacks dual-rail monitoring and adjustable third-voltage capability - requires external circuitry for multi-rail systems. | Use TPS3808G33DBVR only for single-rail 3.3V applications where extended timeout and TI ecosystem integration are prioritized. |
Compared with MAX6720AUTLTD1+T, the MAX6719AUTLTD1+T offers higher VCC1/VCC2 thresholds ideal for 4.63V/3.08V rails, while TPS3808G33DBVR lacks true dual-supply supervision - making MAX6719AUTLTD1+T the only option supporting simultaneous core/I/O rail monitoring with sub-1.5ms timeout in SOT23-6.
Availability
MAX6719AUTLTD1+T is available at Aetrix Electronics and suitable for telecom power management, industrial PLC I/O modules, and battery-powered edge sensors requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6719AUTLTD1+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 high-performance analog and mixed-signal ICs for power, sensing, and interface applications in industrial, automotive, and communications markets.
The MAX6715A–MAX6729A family delivers ultra-low-voltage supervisory circuits optimized for multirail embedded systems where space, power, and reliability constrain traditional discrete solutions.
FAQ
What is the factory-trimmed reset threshold voltage for VCC1 on the MAX6719AUTLTD1+T?
The MAX6719AUTLTD1+T has a factory-trimmed VCC1 reset threshold of 4.625V (typical), with a guaranteed range of 4.500V to 4.750V at 25°C. This corresponds to the "L" suffix in Maxim's Reset Voltage Threshold Suffix Guide and is laser-trimmed during production for high accuracy without external calibration.
Does the MAX6719AUTLTD1+T support monitoring a third supply voltage?
Yes, the MAX6719AUTLTD1+T supports third-voltage monitoring via its RSTIN pin, which compares an externally divided voltage against a precise 626.5mV internal reference. This enables accurate supervision of auxiliary rails such as 1.2V, 1.8V, or 2.5V using only two external resistors - a capability confirmed in the device's Electrical Characteristics and Pin Description sections.
What is the minimum reset timeout period for the MAX6719AUTLTD1+T?
The MAX6719AUTLTD1+T has a minimum reset timeout period of 1.1ms, denoted by the "D1" suffix in its ordering code. This value is production-guaranteed across –40°C to +125°C and ensures sufficient hold time for microprocessor initialization after power recovery in fast-booting embedded systems.
Is the MAX6719AUTLTD1+T compatible with manual reset functionality?
Yes, the MAX6719AUTLTD1+T includes an active-low manual-reset input (MR) with a 50kΩ internal pullup to VCC1. A logic-low pulse ≥1µs on MR forces reset assertion for the full timeout period, enabling hardware-initiated recovery in field service or test modes without firmware involvement.
What package type and pin count does the MAX6719AUTLTD1+T use?
The MAX6719AUTLTD1+T uses a 6-pin SOT23 package (outline number 21-0058, package code U6+1), with validated pin functions including VCC1, VCC2, GND, RST, MR, and RSTIN. Thermal resistance is specified as θJA = 115°C/W on multilayer board, supporting high-density industrial PCB layouts.
MAX6719AUTLTD1+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 1.1ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-6
MAX6719AUTLTD1+T FAQ
1.How can I place an order for MAX6719AUTLTD1+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6719AUTLTD1+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 MAX6719AUTLTD1+T reliable?
The price and inventory of MAX6719AUTLTD1+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6719AUTLTD1+T is usually 5 days.
3.What payment methods are accepted for MAX6719AUTLTD1+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6719AUTLTD1+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6719AUTLTD1+T?
MAX6719AUTLTD1+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6719AUTLTD1+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 MAX6719AUTLTD1+T?
For technical support, including MAX6719AUTLTD1+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6719AUTLTD1+T requirements.
6.How does Aetrix verify that MAX6719AUTLTD1+T is sourced from the original manufacturer or authorized distributors?
All MAX6719AUTLTD1+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 MAX6719AUTLTD1+T meets industry standards.
7.What is the process for return or replacement of MAX6719AUTLTD1+T?
All MAX6719AUTLTD1+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6719AUTLTD1+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 MAX6719AUTLTD1+T part is unused and in its original packaging.
Return procedure for MAX6719AUTLTD1+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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