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Analog Devices Inc./Maxim Integrated MAX6719AUTRVD1+T
- Part No.:
- MAX6719AUTRVD1+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6719AUTRVD1+T.pdf
- Description:
- IC SUPERVISOR 3 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MAX6719AUTRVD1+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, 1.1ms minimum reset timeout, and RSTIN-adjustable third-voltage monitoring down to 0.62V. It asserts active-low push-pull reset when either supply falls below threshold and maintains reset for the full timeout period-critical for reliable boot in telecom power systems.
For engineers reviewing the MAX6719AUTRVD1+T datasheet, MAX6719AUTRVD1+T pinout, MAX6719AUTRVD1+T application, or MAX6719AUTRVD1+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 manual reset, watchdog timer (35s startup / 1.12s normal), and power-fail input/output functions.
Technical Context
The MAX6719AUTRVD1+T integrates dual independent voltage comparators with hysteresis (0.5% of VTH), a precision 626.5mV internal reference for RSTIN/PFI inputs, and a dual-mode watchdog timer with long startup (≥35s) and short operational timeout (≥1.12s). Its reset logic remains valid across -40°C to +125°C while consuming only 10µA typical ICC1 at 3.6V and VCC2 ≥ 0.8V.
It features push-pull RST output referenced to VCC1, open-drain or push-pull RST2 referenced to VCC2, and supports external resistor-divider networks on RSTIN for third-supply monitoring. The MR input includes a 50kΩ internal pullup to VCC1 and guarantees reset assertion within 200ns of MR low-to-high transition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | VCC1: 0.8V–5.5V; VCC2: 0.8V–5.5V - ensures operation during brownout and supports multivoltage rail systems |
| Reset Timeout Period | 1.1ms (min) - provides sufficient hold time for processor initialization without excessive delay |
| VCC1 Reset Threshold | 4.625V (typ), ±125mV tolerance - factory-trimmed for precise 5V system supervision |
| VCC2 Reset Threshold | 3.075V (typ), ±75mV tolerance - matches common 3.3V auxiliary rail requirements |
| RSTIN Threshold Voltage | 626.5mV (typ), ±15.5mV - enables accurate third-supply monitoring via external resistor divider |
| Supply Current (ICC1) | 10µA (typ) at 3.6V - minimizes quiescent power in battery-backed or energy-sensitive applications |
| Operating Temperature | -40°C to +125°C - qualified for automotive under-hood and industrial control environments |
Pinout & Package
SOT23-6 package (package code U6+1), 1.6mm × 2.9mm footprint, 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 when VCC1/VCC2/RSTIN drops below threshold or MR is pulled low |
| 2 | GND | Ground reference for all internal comparators and logic; must be low-impedance connection |
| 3 | MR | Active-low manual-reset input with 50kΩ internal pullup to VCC1; reset persists for full timeout after MR release |
| 4 | VCC2 | Secondary supply input powering comparator for VCC2 monitoring and RST2 output driver |
| 5 | VCC1 | Primary supply input powering core logic, VCC1 comparator, RST driver, and internal reference |
| 6 | RSTIN | High-impedance adjustable reset input; monitors third supply via resistor divider; threshold = 626.5mV |
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 thresholds and hysteresis prevents false resets during rail sequencing |
| Externally adjustable third-supply monitor | RSTIN input with 626.5mV reference enables precise monitoring of any supply ≥0.62V using two external resistors |
| Dual-mode watchdog timer | 35s minimum startup period allows full system boot before watchdog enforcement; 1.12s normal timeout detects runtime hangs |
| Guaranteed reset validity down to 0.8V | Ensures correct reset state even during deep brownout-no external pulldown required for push-pull RST |
| Immunity to short VCC transients | Withstands ≤20µs negative glitches (depending on overdrive) without spurious reset-reduces need for additional filtering |
Applications
| Telecom Power Management | Industrial PLC Controller |
|---|---|
|
Use Scenario: Monitoring primary 4.8V DC-DC output and secondary 3.3V FPGA I/O rail in carrier-grade line cards. IC Role / Device Role / Timing Role: Dual-supply supervisor asserting synchronized reset to ARM-based controller and FPGA upon any rail dropout. Use Value: Prevents configuration corruption during partial power loss; 1.1ms timeout aligns with FPGA configuration clock timing. |
Use Scenario: Supervising 24V field bus converter (VCC1) and isolated 5V logic rail (VCC2) in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Ensures deterministic restart after brownout by holding reset until both rails stabilize above 4.625V and 3.075V respectively. Use Value: Eliminates need for discrete RC reset circuits; -40°C to +125°C rating supports uncooled cabinet deployment. |
| Battery-Powered Edge Gateway | Automotive Infotainment Head Unit |
|
Use Scenario: Monitoring Li-ion battery voltage (via RSTIN divider) alongside 3.3V MCU rail and 1.2V SoC core rail in cellular IoT gateway. IC Role / Device Role / Timing Role: Third-supply monitoring triggers graceful shutdown when battery drops below 3.2V, while dual-rail supervision guards boot integrity. Use Value: 14µA total supply current extends battery life; RSTIN's 100nA input leakage preserves battery charge during sleep. |
Use Scenario: Supervising 5V infotainment processor supply (VCC1) and 3.3V display interface rail (VCC2) in AEC-Q100-compliant head unit designs. IC Role / Device Role / Timing Role: Push-pull RST drives processor reset directly; MR input enables service-mode forced reset via diagnostic port. Use Value: Guaranteed reset behavior at 0.8V supports cold-cranking scenarios; SOT23-6 footprint fits tight PCB layouts near power ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6720AUTRVD1+T | Same SOT23-6 package and pinout; identical VCC1/VCC2 thresholds but no RSTIN input - lacks third-supply monitoring capability | Applicable where only dual-rail supervision is needed; not suitable for battery voltage or auxiliary supply monitoring | Select MAX6720AUTRVD1+T if RSTIN functionality is unnecessary and cost optimization is prioritized |
| TPS3808G33DBVR | Single-supply supervisor (3.3V fixed threshold); no VCC2 input, no RSTIN, no watchdog; 350ms timeout vs. 1.1ms | Only monitors one rail; requires external circuitry for dual-rail coordination or third-supply sensing | Choose TPS3808G33DBVR only for simple single-rail systems where timing and feature set match legacy design constraints |
Compared with MAX6720AUTRVD1+T, MAX6719AUTRVD1+T adds critical RSTIN-based third-supply monitoring without increasing footprint or supply current; versus TPS3808G33DBVR, it delivers integrated dual-rail supervision, sub-millisecond timeout, and watchdog functionality essential for complex embedded systems.
Availability
MAX6719AUTRVD1+T is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, and automotive infotainment systems requiring stable component supply, extended temperature operation, and precise multirail supervision.
Supply support for MAX6719AUTRVD1+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 demanding industrial, automotive, and communications applications.
The MAX6715A–MAX6729A family delivers compact, ultra-low-power supervisory solutions optimized for multivoltage systems where reliability, small size, and wide operating temperature range are mandatory.
FAQ
What is the reset timeout period for MAX6719AUTRVD1+T?
The MAX6719AUTRVD1+T has a minimum reset timeout period of 1.1ms, as indicated by the "D1" suffix in its part number. This value is guaranteed over the full -40°C to +125°C operating temperature range and ensures sufficient reset assertion time for modern microprocessors and FPGAs during power-up or brownout recovery. The actual timeout may vary slightly due to process and temperature but remains within the specified min/max bounds per the datasheet.
Does MAX6719AUTRVD1+T support manual reset functionality?
Yes, MAX6719AUTRVD1+T includes an active-low manual-reset input (MR) with an internal 50kΩ pullup resistor to VCC1. Pulling MR low forces an immediate reset assertion, which remains active for the full 1.1ms timeout period after MR returns high. This feature enables hardware-initiated resets for diagnostics, field service, or emergency recovery without requiring external components.
Can MAX6719AUTRVD1+T monitor a third voltage supply?
Yes, MAX6719AUTRVD1+T supports third-supply monitoring via its RSTIN pin, which features a precise 626.5mV internal reference. By connecting an external resistor divider between the target supply and ground, users can configure the trip point for any voltage ≥0.62V. This capability is confirmed in the device's Pin Description table and Electrical Characteristics section for MAX6719A/MAX6720A variants.
What is the operating temperature range of MAX6719AUTRVD1+T?
MAX6719AUTRVD1+T operates over the industrial temperature range of -40°C to +125°C. This specification is explicitly stated in the Absolute Maximum Ratings and Electrical Characteristics tables, and the device is characterized across this full range for parameters including supply current, reset thresholds, and timeout accuracy-making it suitable for under-hood automotive and harsh-environment industrial use.
Is MAX6719AUTRVD1+T pin-compatible with other devices in the MAX6715A–MAX6729A family?
MAX6719AUTRVD1+T uses the SOT23-6 package (U6+1) and shares identical pin assignments for VCC1, VCC2, GND, MR, RST, and RSTIN with other MAX6719A/MAX6720A variants. However, pin compatibility with MAX6715A–MAX6718A or MAX6721A–MAX6729A is not guaranteed due to differing pin functions (e.g., WDI, PFI, PFO, RST2) and package variants (SOT23-5/8). Always verify pin mapping against the specific variant's Pin Description table.
MAX6719AUTRVD1+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:
- 1.575V, 2.625V, 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
MAX6719AUTRVD1+T FAQ
1.How can I place an order for MAX6719AUTRVD1+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6719AUTRVD1+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 MAX6719AUTRVD1+T reliable?
The price and inventory of MAX6719AUTRVD1+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6719AUTRVD1+T is usually 5 days.
3.What payment methods are accepted for MAX6719AUTRVD1+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6719AUTRVD1+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6719AUTRVD1+T?
MAX6719AUTRVD1+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6719AUTRVD1+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 MAX6719AUTRVD1+T?
For technical support, including MAX6719AUTRVD1+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6719AUTRVD1+T requirements.
6.How does Aetrix verify that MAX6719AUTRVD1+T is sourced from the original manufacturer or authorized distributors?
All MAX6719AUTRVD1+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 MAX6719AUTRVD1+T meets industry standards.
7.What is the process for return or replacement of MAX6719AUTRVD1+T?
All MAX6719AUTRVD1+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6719AUTRVD1+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 MAX6719AUTRVD1+T part is unused and in its original packaging.
Return procedure for MAX6719AUTRVD1+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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