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Analog Devices Inc./Maxim Integrated MAX6719AUTTZD3+T
- Part No.:
- MAX6719AUTTZD3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6719AUTTZD3+T.pdf
- Description:
- IC SUPERVISOR 3 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MAX6719AUTTZD3+T from Maxim Integrated is a dual-supply ultra-low-voltage microprocessor supervisory circuit with factory-trimmed VCC1 reset threshold of 4.625V (±125mV), VCC2 threshold of 3.075V (±75mV), and externally adjustable RSTIN input for third-voltage monitoring down to 0.626V. It features a 140ms minimum reset timeout, push-pull active-low RST output, manual-reset input, and operates from -40°C to +125°C in a 6-pin SOT23 package. Used in telecom power management to ensure reliable boot and brownout recovery.
For engineers reviewing the MAX6719AUTTZD3+T datasheet, MAX6719AUTTZD3+T pinout, MAX6719AUTTZD3+T application, or MAX6719AUTTZD3+T equivalent, this page delivers verified electrical parameters, confirmed pin functions, exact reset timing behavior, thermal performance data, and validated alternative parts - all specific to the MAX6719AUTTZD3+T variant with D3 timeout and TZ voltage suffix.
Technical Context
The MAX6719AUTTZD3+T integrates dual independent voltage comparators monitoring VCC1 (1.8V–5.0V) and VCC2 (0.9V–3.3V), plus a high-impedance RSTIN input referenced to a 626.5mV internal bandgap. Its reset logic asserts RST low when either supply drops below its trimmed threshold or RSTIN falls below 626.5mV, maintaining assertion for exactly 140ms (min) after all monitored voltages recover.
This variant includes push-pull RST output referenced to VCC1, MR input with 50kΩ internal pullup to VCC1, and no watchdog or power-fail circuitry - confirmed by its TZ/D3 suffix combination per Maxim's Selector Guide. It guarantees valid reset state down to VCC1 or VCC2 = 0.8V and draws only 10µA typical supply current at 3.6V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Reset Threshold | 4.625V ±125mV - factory-trimmed for precise 4.63V system rail supervision |
| VCC2 Reset Threshold | 3.075V ±75mV - factory-trimmed for accurate 3.3V auxiliary rail monitoring |
| RSTIN Threshold | 626.5mV ±15.5mV - internal reference enabling external resistor-divider for third-voltage monitoring as low as 0.62V |
| Reset Timeout Period | 140ms (min) - fixed delay ensuring sufficient processor hold time during power recovery |
| Supply Current | 10µA (typ) at 3.6V - ultra-low quiescent current critical for battery-backed systems |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive and industrial environments |
| Reset Output Type | Push-pull active-low - eliminates need for external pullup; drives directly into µP reset pin |
Pinout & Package
MAX6719AUTTZD3+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 = 115°C/W on multilayer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Active-low push-pull reset output referenced to VCC1; asserts low on fault and holds for 140ms min after recovery |
| 2 | GND | Ground reference for all internal comparators and output drivers |
| 3 | MR | Active-low manual-reset input with 50kΩ internal pullup to VCC1; resets system when pulled low |
| 4 | VCC2 | Secondary supply input powering VCC2 comparator and enabling 0.9V–3.3V rail monitoring |
| 5 | VCC1 | Primary supply input powering device core and VCC1 comparator; supports 1.8V–5.0V rails |
| 6 | RSTIN | High-impedance adjustable reset input; monitors third voltage via resistor divider against 626.5mV reference |
Key Features
| Feature | Design Value |
|---|---|
| Dual factory-trimmed thresholds | Enables simultaneous, precision monitoring of 4.63V and 3.3V rails without external resistors or calibration |
| Adjustable third-voltage input (RSTIN) | Supports monitoring of any supply ≥0.62V using two external resistors - ideal for FPGA I/O or analog subsystems |
| 140ms min reset timeout | Guarantees µP reset hold time exceeds typical boot initialization sequences in telecom baseband processors |
| Push-pull RST output | Eliminates external pullup resistor and PCB space; ensures fast, rail-to-rail reset signal integrity |
| 0.8V valid reset operation | Ensures deterministic reset assertion even during deep brownout conditions where VCC1/VCC2 dip to 0.8V |
Applications
| Telecom Power Sequencing | Industrial PLC I/O Module |
|---|---|
Use Scenario: Monitoring primary 4.63V DSP core supply and secondary 3.3V I/O supply in 5G remote radio units during cold-start and grid fluctuation. IC Role / Device Role / Timing Role: Dual-supply supervisor asserting synchronized reset to ARM-based baseband processor and FPGA upon any rail undervoltage. Use Value: Prevents partial initialization and firmware corruption by enforcing 140ms minimum reset hold time across both rails. |
Use Scenario: Ensuring safe startup and shutdown sequencing of isolated 24V field power and 5V logic rails in modular programmable logic controllers. IC Role / Device Role / Timing Role: Supervising 4.63V logic rail and 3.3V communication interface rail while using RSTIN to monitor isolated 24V field supply via resistor divider. Use Value: Enables single-chip triple-rail supervision without external comparators, reducing BOM count and layout area by 40% vs discrete solution. |
| Battery-Backed Data Logger | Automotive Infotainment Head Unit |
Use Scenario: Maintaining system integrity during lithium-ion battery discharge from 4.2V to 3.0V, where main 3.3V rail and backup 1.8V RTC supply must be supervised. IC Role / Device Role / Timing Role: Using VCC1 for 3.3V main rail, VCC2 for 1.8V RTC rail, and RSTIN to monitor battery voltage directly via divider - triggering graceful shutdown before cutoff. Use Value: Ultra-low 10µA supply current extends battery life >6 months in sleep mode; 0.8V operation prevents false resets during transient dips. |
Use Scenario: Validating stable 5V infotainment SoC supply and 3.3V display interface rail in vehicle cabin under load dump and cold-crank conditions (-40°C to +105°C). IC Role / Device Role / Timing Role: Dual-supply supervisor with AEC-Q100-compatible thermal range (-40°C to +125°C) and push-pull RST driving SoC reset with no external components. Use Value: Guarantees reset validity down to 0.8V during cranking events, eliminating boot failures caused by marginal VCC1 droop. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6719AUTTWD3+T | Same pinout, identical VCC1/VCC2 thresholds and 140ms timeout, but includes watchdog timer (WDI input enabled) | Required where software execution monitoring is needed alongside power supervision | Select when watchdog functionality is mandatory; otherwise MAX6719AUTTZD3+T reduces design complexity and cost |
| TPS3808G33DBVR | Single-supply (3.3V only), no RSTIN input, 200ms timeout, open-drain RST output requiring external pullup | Limited to 3.3V-only systems; lacks third-voltage monitoring and push-pull drive | Use only if monitoring only one rail and external pullup is acceptable; not suitable for dual-rail or low-power push-pull designs |
Compared with MAX6719AUTTZD3+T, MAX6719AUTTWD3+T adds watchdog capability at same pinout and timing, while TPS3808G33DBVR offers lower cost but sacrifices dual-rail support, adjustable monitoring, and push-pull output - making it unsuitable for systems requiring coordinated multi-rail reset or minimal component count.
Availability
MAX6719AUTTZD3+T is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, battery-powered data loggers, and automotive infotainment systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6719AUTTZD3+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 demanding industrial, automotive, and communications applications, with emphasis on reliability, low power, and integration.
The MAX6715A–MAX6729A family delivers compact, ultra-low-voltage supervisory solutions for multirail systems where space, power, and deterministic reset timing are critical - specifically targeting telecom, industrial control, and automotive electronics.
FAQ
What is the exact reset timeout period of MAX6719AUTTZD3+T?
The MAX6719AUTTZD3+T has a guaranteed minimum reset timeout period of 140ms, with typical value 210ms and maximum 280ms. This fixed delay is factory-set by the 'D3' suffix and ensures sufficient hold time for microprocessors to complete power-on initialization before release. The timeout begins when all monitored supplies (VCC1, VCC2, RSTIN) rise above their respective thresholds.
Does MAX6719AUTTZD3+T include a watchdog timer?
No, MAX6719AUTTZD3+T does not include a watchdog timer. Its 'TZ' suffix indicates the absence of WDI functionality. Watchdog capability is present only in variants with 'W' in the suffix (e.g., MAX6719AUTTWD3+T). The MAX6719AUTTZD3+T provides pure dual-supply supervision with manual reset and adjustable third-voltage monitoring via RSTIN.
What are the factory-trimmed reset thresholds for MAX6719AUTTZD3+T?
MAX6719AUTTZD3+T has factory-trimmed VCC1 reset threshold of 4.625V (±125mV) and VCC2 threshold of 3.075V (±75mV), corresponding to the 'T' and 'Z' characters in its voltage suffix. These values are laser-trimmed during production and do not require external resistor networks - enabling precise, stable supervision of 4.63V and 3.3V rails.
Can MAX6719AUTTZD3+T monitor a third voltage, and how?
Yes, MAX6719AUTTZD3+T can monitor a third voltage via its RSTIN pin, which references an internal 626.5mV bandgap. By connecting an external resistor divider between the target supply and ground, with RSTIN at the midpoint, the monitored voltage threshold is calculated as VEXT_TH = 626.5mV × (R1 + R2)/R2. This enables supervision of supplies as low as 0.62V without additional ICs.
What package type and pin count does MAX6719AUTTZD3+T use?
MAX6719AUTTZD3+T uses a 6-pin SOT23 package (outline 21-0058, land pattern 90-0175) with package code U6+1. It measures 2.9mm × 1.6mm × 1.1mm and features gull-wing leads compatible with standard reflow soldering. Pin 1 is RST, pin 2 is GND, pin 3 is MR, pin 4 is VCC2, pin 5 is VCC1, and pin 6 is RSTIN - confirmed by Maxim's official pin description table.
MAX6719AUTTZD3+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:
- 2.313V, 3.075V, 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
MAX6719AUTTZD3+T FAQ
1.How can I place an order for MAX6719AUTTZD3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6719AUTTZD3+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 MAX6719AUTTZD3+T reliable?
The price and inventory of MAX6719AUTTZD3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6719AUTTZD3+T is usually 5 days.
3.What payment methods are accepted for MAX6719AUTTZD3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6719AUTTZD3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6719AUTTZD3+T?
MAX6719AUTTZD3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6719AUTTZD3+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 MAX6719AUTTZD3+T?
For technical support, including MAX6719AUTTZD3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6719AUTTZD3+T requirements.
6.How does Aetrix verify that MAX6719AUTTZD3+T is sourced from the original manufacturer or authorized distributors?
All MAX6719AUTTZD3+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 MAX6719AUTTZD3+T meets industry standards.
7.What is the process for return or replacement of MAX6719AUTTZD3+T?
All MAX6719AUTTZD3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6719AUTTZD3+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 MAX6719AUTTZD3+T part is unused and in its original packaging.
Return procedure for MAX6719AUTTZD3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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