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Analog Devices Inc./Maxim Integrated MAX6716AUTLTD3+T
- Part No.:
- MAX6716AUTLTD3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6716AUTLTD3+T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX6716AUTLTD3+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, push-pull active-low RST output, and guaranteed reset validity down to VCC1 or VCC2 = 0.8V - used in telecom power management and industrial embedded systems requiring reliable brownout detection.
For engineers reviewing the MAX6716AUTLTD3+T datasheet, MAX6716AUTLTD3+T pinout, MAX6716AUTLTD3+T application, or MAX6716AUTLTD3+T equivalent, key selection criteria include dual-voltage monitoring capability, 140ms reset timeout, push-pull RST output referenced to VCC1, manual-reset input with internal 50kΩ pullup, and operation across –40°C to +125°C.
Technical Context
The MAX6716AUTLTD3+T implements independent voltage comparators for VCC1 and VCC2, each with factory-trimmed thresholds (VTH1 = 4.625V typ, VTH2 = 3.075V typ), hysteresis of 0.5% of threshold, and 20µs propagation delay from supply drop to reset assertion. It guarantees correct reset logic state when either supply remains ≥0.8V, enabling robust operation during deep brownouts.
This variant includes push-pull RST output (not open-drain), manual-reset input (MR), no watchdog or RSTIN/PFI functionality, and uses the D3 suffix indicating 140ms (min) reset timeout period. Pin 1 is RST, Pin 2 is GND, Pin 3 is MR, Pin 4 is VCC2, Pin 5 is VCC1, Pin 6 is unused (NC) per MAX6716A pin mapping.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | VCC1: 0.8V–5.5V; VCC2: 0.8V–5.5V - supports wide-input multirail systems including 1.2V/1.8V/3.3V/5V combinations |
| 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 |
| Reset Timeout Period | 140ms (min), 210ms (typ), 280ms (max) - ensures µP completes full boot sequence before release |
| Supply Current | 15µA (typ) at 3.6V - enables battery-backed or low-power always-on monitoring |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive and industrial control environments |
| Reset Output Type | Push-pull active-low RST referenced to VCC1 - eliminates need for external pullup and drives directly into µP reset pin |
Pinout & Package
SOT23-6 package (package code U6+1), 1.6mm × 2.9mm footprint, 1.1mm 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 when VCC1 < 4.625V or VCC2 < 3.075V; holds for 140ms min after recovery |
| 2 | GND | Ground reference for all internal comparators and output drivers; must be low-impedance connection |
| 3 | MR | Active-low manual-reset input with internal 50kΩ pullup to VCC1; pulse <1µs sufficient to trigger reset |
| 4 | VCC2 | Secondary supply input powering VCC2 comparator and related circuitry; monitors 0.9V–3.3V rails |
| 5 | VCC1 | Primary supply input powering core logic and RST driver; sets VCC1 comparator threshold and output reference |
| 6 | NC | No-connect pin - left unconnected per MAX6716A functional configuration; not internally bonded |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneous supervision of VCC1 and VCC2 with separate factory-trimmed thresholds avoids single-point failure in multirail systems |
| Guaranteed reset validity down to 0.8V | Ensures deterministic reset behavior during severe brownout conditions where VCC drops below 1.0V |
| Push-pull RST output | Eliminates external pullup resistor, reduces BOM count, and provides stronger drive than open-drain for noise-immune µP interface |
| Manual-reset input with internal pullup | Enables field service reset without external components; MR pin accepts CMOS-level signals or momentary switch to GND |
| Low 15µA supply current | Minimizes standby power draw in battery-critical applications such as portable test equipment and remote sensors |
Applications
| Telecom Power Management | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Monitoring 3.3V control rail and 1.2V FPGA core rail in LTE base station power sequencer. IC Role / Device Role / Timing Role: Dual-supply supervisor asserting reset if either rail falls below threshold during hot-swap insertion or transient overload. Use Value: Prevents FPGA configuration corruption by holding reset until both supplies stabilize for ≥140ms post-recovery. |
Use Scenario: Ensuring safe startup of analog input/output circuits in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Supervising 24V DC-DC converted 5V system rail and isolated 3.3V microcontroller rail with manual reset for field maintenance. Use Value: Guarantees µP remains held in reset until analog references settle, eliminating spurious ADC readings during power-up. |
| Automotive Infotainment Head Units | Medical Diagnostic Imaging Subsystems |
Use Scenario: Validating 5V main processor rail and 1.8V GPU memory rail in vehicle infotainment SoC power domain. IC Role / Device Role / Timing Role: Dual-voltage monitor with –40°C to +125°C rating ensuring cold-cranking and under-hood thermal reliability. Use Value: Push-pull RST output drives automotive-grade µP reset pin directly without pullup, reducing layout sensitivity to EMI. |
Use Scenario: Securing power integrity for FPGA-based image processing pipeline in portable ultrasound devices. IC Role / Device Role / Timing Role: Supervising battery-backed 3.3V logic rail and 1.2V high-speed SerDes rail during battery switchover events. Use Value: 15µA quiescent current extends battery life between charges while maintaining fail-safe reset assertion during voltage sag. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6715AUTLTD3+T | Open-drain RST output (vs. push-pull); identical VTH1/VTH2 thresholds and 140ms timeout | Requires external pullup resistor; suitable where level-shifting or wired-OR reset bus is needed | Select when interfacing to bidirectional µP reset pins or multi-drop reset networks |
| TPS3808G33DBVR | Single-supply (3.3V only), 200ms timeout, 3.08V threshold, SOT23-6 package | Lacks VCC2 monitoring; no manual reset input; lower temp range (–40°C to +105°C) | Use only for single-rail 3.3V systems where secondary rail supervision is unnecessary |
Compared with MAX6715AUTLTD3+T and TPS3808G33DBVR, the MAX6716AUTLTD3+T uniquely delivers dual-rail supervision with push-pull drive and full automotive temperature support - making it irreplaceable in multivoltage industrial and automotive designs requiring direct µP reset assertion without external components.
Availability
MAX6716AUTLTD3+T is available at Aetrix Electronics and suitable for telecom power sequencers, industrial PLC I/O modules, and automotive infotainment head units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6716AUTLTD3+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 targets multivoltage embedded systems needing compact, accurate, and fail-safe power supervision - with MAX6716AUTLTD3+T optimized for dual-rail push-pull reset in space-constrained industrial and automotive modules.
FAQ
What is the exact reset timeout period of MAX6716AUTLTD3+T?
The MAX6716AUTLTD3+T has a guaranteed minimum reset timeout period of 140ms, typical value of 210ms, and maximum of 280ms. This timing begins when VCC1 or VCC2 falls below its respective threshold and ends after all monitored supplies rise above their thresholds - ensuring µP reset is held long enough for complete power stabilization and firmware initialization in MAX6716AUTLTD3+T-based systems.
Does MAX6716AUTLTD3+T support monitoring a third voltage rail?
No, MAX6716AUTLTD3+T does not support third-rail monitoring. It is a dual-supply supervisor with dedicated VCC1 and VCC2 inputs only. Models like MAX6719A or MAX6723A include RSTIN for adjustable auxiliary voltage monitoring, but MAX6716AUTLTD3+T lacks this pin and internal circuitry - confirming its function strictly as a two-rail device per its datasheet pinout and feature set.
What is the function of Pin 6 on MAX6716AUTLTD3+T?
Pin 6 on MAX6716AUTLTD3+T is a no-connect (NC) terminal - not internally bonded and left unconnected in the SOT23-6 package. This distinguishes MAX6716AUTLTD3+T from variants like MAX6728A/MAX6729A that use Pin 6 for PFI. The NC status is confirmed by the MAX6716A-specific pin description table and functional diagram, which show no internal connection for Pin 6.
Can MAX6716AUTLTD3+T operate with VCC1 = 1.8V and VCC2 = 1.2V?
Yes, MAX6716AUTLTD3+T supports VCC1 as low as 0.8V and VCC2 as low as 0.8V, fully covering 1.8V/1.2V operation. Its VCC1 reset threshold is fixed at 4.625V (typ), so it monitors higher rails - meaning MAX6716AUTLTD3+T is intended for systems where VCC1 is ≥3.0V (e.g., 3.3V or 5V) and VCC2 is a lower secondary rail (e.g., 1.2V, 1.8V, or 3.3V). Using it with VCC1 = 1.8V would prevent reset assertion since 1.8V < 4.625V threshold.
Is MAX6716AUTLTD3+T watchdog-capable?
No, MAX6716AUTLTD3+T does not include watchdog functionality. It belongs to the MAX6715A/MAX6716A subgroup, which omits WDI (watchdog input) and associated timer circuitry. Watchdog capability is present only in MAX6721A–MAX6729A/MAX6797A variants - confirmed by absence of WDI pin in MAX6716AUTLTD3+T's pin map and exclusion from its feature list in the datasheet.
MAX6716AUTLTD3+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 3.075V, 4.625V
- Output:
- Push-Pull, Totem Pole
- 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
MAX6716AUTLTD3+T FAQ
1.How can I place an order for MAX6716AUTLTD3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6716AUTLTD3+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 MAX6716AUTLTD3+T reliable?
The price and inventory of MAX6716AUTLTD3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6716AUTLTD3+T is usually 5 days.
3.What payment methods are accepted for MAX6716AUTLTD3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6716AUTLTD3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6716AUTLTD3+T?
MAX6716AUTLTD3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6716AUTLTD3+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 MAX6716AUTLTD3+T?
For technical support, including MAX6716AUTLTD3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6716AUTLTD3+T requirements.
6.How does Aetrix verify that MAX6716AUTLTD3+T is sourced from the original manufacturer or authorized distributors?
All MAX6716AUTLTD3+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 MAX6716AUTLTD3+T meets industry standards.
7.What is the process for return or replacement of MAX6716AUTLTD3+T?
All MAX6716AUTLTD3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6716AUTLTD3+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 MAX6716AUTLTD3+T part is unused and in its original packaging.
Return procedure for MAX6716AUTLTD3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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