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Analog Devices Inc./Maxim Integrated MAX6719AUTYDD3+T
- Part No.:
- MAX6719AUTYDD3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6719AUTYDD3+T.pdf
- Description:
- IC SUPERVISOR 3 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MAX6719AUTYDD3+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 multivoltage embedded systems.
For engineers reviewing the MAX6719AUTYDD3+T datasheet, MAX6719AUTYDD3+T pinout, MAX6719AUTYDD3+T application, or MAX6719AUTYDD3+T equivalent, key selection criteria include dual-supply monitoring capability, 140ms reset timeout, push-pull RST output referenced to VCC1, guaranteed reset validity down to VCC1/VCC2 = 0.8V, and compatibility with manual-reset, watchdog, and power-fail functions in industrial and automotive-grade designs.
Technical Context
The MAX6719AUTYDD3+T implements dual independent voltage comparators with internal 0.626V reference for RSTIN, factory-trimmed VTH1/VTH2 thresholds, and a digital reset timeout timer with fixed 140ms (D3 suffix) delay. Its architecture guarantees valid reset logic state even when VCC1 or VCC2 drops to 0.8V, enabling brownout detection in low-power battery-operated systems.
It integrates a push-pull RST output referenced to VCC1, an active-low manual-reset input (MR) with 50kΩ internal pullup, and supports optional watchdog timer disable via open WDI pin. The device operates across –40°C to +125°C and draws only 14µA typical supply current at 3.6V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | VCC1: 0.8V–5.5V; VCC2: 0.8V–5.5V - enables operation during deep brownout and compatibility with 1.2V/1.8V/3.3V/5V rails |
| Reset Timeout Period | 140ms (min) - ensures sufficient hold time for processor initialization and memory stabilization after power recovery |
| VCC1 Reset Threshold | 4.625V (typ), ±1.5% tolerance - factory-trimmed for precise 4.63V nominal trip point on primary supply |
| VCC2 Reset Threshold | 3.075V (typ), ±1.5% tolerance - factory-trimmed for precise 3.08V nominal trip point on secondary supply |
| RSTIN Threshold Voltage | 626.5mV (typ), ±2.5mV hysteresis - internal reference enabling externally adjustable third-voltage monitoring via resistor divider |
| Supply Current | 14µA (typ) at 3.6V - ultra-low quiescent current critical for always-on battery-backed subsystems |
| Operating Temperature | –40°C to +125°C - AEC-Q100 qualified for under-hood and industrial control applications |
Pinout & Package
SOT23-6 package (package code U6+1), 1.6mm × 2.9mm footprint, 0.95mm height, thermal resistance θJA = 115°C/W (multilayer board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Active-low push-pull reset output referenced to VCC1; asserts low on VCC1/VCC2/RSTIN fault or MR low; holds for 140ms post-recovery |
| 2 | GND | System ground reference for all internal comparators, timers, and output drivers |
| 3 | MR | Active-low manual-reset input with 50kΩ internal pullup to VCC1; reset persists for full 140ms timeout after MR release |
| 4 | VCC2 | Secondary supply input powering VCC2 comparator and RST2 logic; also serves as reference for push-pull RST2 if present (not implemented in this variant) |
| 5 | VCC1 | Primary supply input powering core logic, VCC1 comparator, and RST output driver; defines VOH level for push-pull RST |
| 6 | RSTIN | High-impedance adjustable reset input; triggers RST assertion when voltage falls below 626.5mV internal reference |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent supply monitoring | Simultaneous VCC1 (1.8–5.0V) and VCC2 (0.9–3.3V) supervision with separate factory-trimmed thresholds avoids single-point failure in multirail systems |
| Adjustable third-voltage monitor | RSTIN input with 626.5mV internal reference enables precise monitoring of auxiliary rails (e.g., 1.0V, 1.2V, 1.5V) using external resistor dividers |
| Guaranteed reset validity to 0.8V | Functional reset assertion and deassertion guaranteed even when VCC1 or VCC2 drops to 0.8V - critical for brownout resilience |
| Immunity to short VCC transients | Withstands negative-going VCC glitches ≤20µs (at 100mV overdrive) without spurious reset - eliminates false triggers from switching noise |
| Low 14µA supply current | Enables permanent connection to battery-backed rails without measurable impact on standby life in portable equipment |
Applications
| Telecom Power Sequencing | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Monitoring 3.3V FPGA core and 1.2V DDR termination supplies in 5G baseband unit with strict power-up order requirements. IC Role / Device Role / Timing Role: Dual-supply supervisor asserting synchronized reset until both rails stabilize above 3.075V and 1.188V thresholds, then holding 140ms for FPGA configuration lock. Use Value: Prevents partial configuration and metastability by enforcing minimum 140ms reset hold time after dual-rail validation. |
Use Scenario: Supervising 24V DC input rail and isolated 5V logic supply in DIN-rail mounted programmable logic controller. IC Role / Device Role / Timing Role: VCC1 monitors 5V logic rail; VCC2 monitors regulated 3.3V I/O buffer supply; RSTIN monitors undervoltage on 24V input via resistor divider. Use Value: Enables single-chip triple-rail supervision with <1.5% threshold accuracy, eliminating need for discrete comparators and timers. |
| Automotive ADAS Camera ECU | Medical Infusion Pump Controller |
Use Scenario: Ensuring clean boot of vision processor and image sensor interface in rear-view camera module exposed to automotive load-dump transients. IC Role / Device Role / Timing Role: Push-pull RST output drives processor reset directly; MR input allows service-mode forced reset; guaranteed operation down to VCC1 = 0.8V withstands cold-crank brownouts. Use Value: Meets AEC-Q100 Grade 1 requirements and eliminates external pullup resistors due to integrated push-pull driver. |
Use Scenario: Supervising main 3.3V MCU supply and backup 1.8V RTC/sensor rail in battery-powered infusion pump with fail-safe shutdown logic. IC Role / Device Role / Timing Role: VCC1 monitors 3.3V MCU rail; VCC2 monitors 1.8V backup rail; RSTIN monitors battery voltage via divider to trigger graceful shutdown before cutoff. Use Value: 14µA quiescent current extends battery life >2 years in standby; 140ms timeout ensures EEPROM write completion before reset. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6720AUTYDD3+T | Identical pinout, same 4.625V/3.075V thresholds and 140ms timeout, but features open-drain RST output instead of push-pull | Requires external pullup resistor; unsuitable for direct drive of CMOS reset inputs without additional components | Select MAX6720AUTYDD3+T only when open-drain flexibility (e.g., wired-OR reset bus) is required and layout allows pullup placement |
| TPS3808G33DBVR | Single-supply (VDD only), 3.3V fixed threshold, 200ms timeout, no VCC2 or RSTIN inputs - lacks dual-rail capability | Cannot monitor secondary supply or auxiliary rail; limited to single-rail systems with 3.3V nominal supply | Choose TPS3808G33DBVR only for cost-sensitive single-rail applications where dual monitoring is unnecessary |
Compared with MAX6719AUTYDD3+T, MAX6720AUTYDD3+T offers identical supervision functionality but requires external pullup for RST, while TPS3808G33DBVR reduces feature set to single-rail monitoring with longer timeout - making MAX6719AUTYDD3+T the optimal choice for space-constrained dual-rail systems needing push-pull drive and auxiliary voltage monitoring.
Availability
MAX6719AUTYDD3+T is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, and automotive ADAS modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6719AUTYDD3+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, emphasizing reliability, low power, and high integration.
The MAX6715A–MAX6729A family delivers compact, ultra-low-voltage supervisory circuits optimized for multirail embedded systems where simultaneous monitoring of primary, secondary, and auxiliary supplies is essential for system-level fault containment.
FAQ
What is the reset timeout period for MAX6719AUTYDD3+T?
The MAX6719AUTYDD3+T has a fixed minimum reset timeout period of 140ms (D3 suffix), guaranteed over –40°C to +125°C. This timeout begins when VCC1, VCC2, or RSTIN recovers above their respective thresholds and ensures the reset signal remains asserted long enough for microprocessor initialization and memory stabilization before release.
Does MAX6719AUTYDD3+T support manual reset functionality?
Yes, MAX6719AUTYDD3+T includes an active-low manual-reset input (MR) on Pin 3 with an internal 50kΩ pullup resistor to VCC1. Pulling MR low forces immediate reset assertion, and the reset remains active for the full 140ms timeout period after MR returns high - enabling field service, test mode, or emergency recovery without external components.
Can MAX6719AUTYDD3+T monitor a third supply voltage?
Yes, MAX6719AUTYDD3+T provides an RSTIN input (Pin 6) with a precise 626.5mV internal reference, allowing external resistor-divider networks to configure monitoring of a third supply - such as 1.0V, 1.2V, or 1.5V rails - with typical accuracy better than ±1.5% across temperature.
What is the operating temperature range of MAX6719AUTYDD3+T?
MAX6719AUTYDD3+T is rated for –40°C to +125°C operation and is AEC-Q100 qualified, making it suitable for under-hood automotive electronics, industrial control cabinets, and telecom base stations where ambient temperatures exceed standard commercial grade limits.
Is MAX6719AUTYDD3+T compatible with 1.8V logic systems?
Yes, MAX6719AUTYDD3+T supports VCC2 down to 0.8V and VCC1 as low as 0.8V, with factory-trimmed thresholds including 1.8V-compatible options. Its 14µA typical supply current and guaranteed reset validity at 0.8V make it ideal for 1.8V/1.2V multivoltage SoC power domains in portable and IoT devices.
MAX6719AUTYDD3+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:
- 0.788V, 2.188V, 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
MAX6719AUTYDD3+T FAQ
1.How can I place an order for MAX6719AUTYDD3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6719AUTYDD3+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 MAX6719AUTYDD3+T reliable?
The price and inventory of MAX6719AUTYDD3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6719AUTYDD3+T is usually 5 days.
3.What payment methods are accepted for MAX6719AUTYDD3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6719AUTYDD3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6719AUTYDD3+T?
MAX6719AUTYDD3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6719AUTYDD3+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 MAX6719AUTYDD3+T?
For technical support, including MAX6719AUTYDD3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6719AUTYDD3+T requirements.
6.How does Aetrix verify that MAX6719AUTYDD3+T is sourced from the original manufacturer or authorized distributors?
All MAX6719AUTYDD3+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 MAX6719AUTYDD3+T meets industry standards.
7.What is the process for return or replacement of MAX6719AUTYDD3+T?
All MAX6719AUTYDD3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6719AUTYDD3+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 MAX6719AUTYDD3+T part is unused and in its original packaging.
Return procedure for MAX6719AUTYDD3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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