My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6723AUTVDD3+
- Part No.:
- MAX6723AUTVDD3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6723AUTVDD3+.pdf
- Description:
- IC SUPERVISOR 3 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:492
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6723AUTVDD3+ from Maxim Integrated is a dual-voltage microprocessor supervisory IC monitoring VCC1 (primary) and VCC2 (secondary) supply rails with factory-trimmed reset thresholds, 14µA typical supply current at 3.6V, 1.1ms minimum reset timeout, and guaranteed reset validity down to VCC1 or VCC2 = 0.8V - used in telecom power sequencing and multivoltage embedded systems.
For engineers reviewing the MAX6723AUTVDD3+ datasheet, MAX6723AUTVDD3+ pinout, MAX6723AUTVDD3+ application, or MAX6723AUTVDD3+ equivalent, key selection criteria include dual-supply threshold accuracy (±1.5% over temperature), RSTIN-adjustable third-voltage monitoring capability (626.5mV reference), push-pull active-low RST output referenced to VCC1, and AEC-Q100-qualified variants for automotive-grade reliability validation.
Technical Context
The MAX6723AUTVDD3+ integrates dual independent voltage comparators for VCC1 (1.58V–4.63V thresholds) and VCC2 (0.79V–3.08V thresholds), a precision 626.5mV internal reference for externally adjustable RSTIN monitoring, and a dual-mode watchdog timer with 35s startup and 1.12s normal timeout periods. It operates across -40°C to +125°C with 20ppm/°C reset threshold tempco.
Its reset logic asserts active-low RST when either supply falls below its threshold, MR is pulled low, or WDI times out; reset remains asserted for the programmed timeout (1.1ms min) after recovery. The device supports open-drain or push-pull outputs, with push-pull RST referenced to VCC1 and RST2 (if present) referenced to VCC2 - though MAX6723AUTVDD3+ uses only RST and RST2 is not implemented per pinout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Reset Threshold | 2.925V (typ), factory-trimmed 'S' suffix - ensures reliable reset assertion on 3.0V primary rail brownout |
| VCC2 Reset Threshold | 2.925V (typ), factory-trimmed 'S' suffix - matches 3.0V secondary rail for synchronized dual-rail supervision |
| Reset Timeout Period | 1.1ms (min), 'D1' suffix - provides minimal but sufficient hold time for fast-boot microcontrollers |
| Supply Current | 14µA (typ) at 3.6V - enables ultra-low-power operation in battery-backed or energy-constrained systems |
| RSTIN Threshold Voltage | 626.5mV (typ), internal reference - allows precise external resistor-divider setup for third-voltage monitoring down to 0.62V |
| Operating Temperature | -40°C to +125°C - supports industrial and automotive under-hood applications without derating |
| Reset Output Type | Push-pull active-low RST - eliminates need for external pullup and ensures defined logic level during VCC ramp-up |
Pinout & Package
MAX6723AUTVDD3+ is housed in a 6-pin SOT23 package (3.0mm × 1.7mm × 1.3mm height), RoHS-compliant and lead-free (+ suffix). Pin 1 is marked with a dot; pin numbering follows standard SOT23 convention (counterclockwise from mark).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST / RST1 | Active-low push-pull reset output referenced to VCC1; asserts low on VCC1/VCC2 undervoltage, MR low, or WDI timeout |
| 2 | GND | Ground reference for all internal comparators, timers, and output drivers; 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 threshold detection; also supplies internal circuitry when > VCC1 |
| 5 | VCC1 | Primary supply input powering core logic and VCC1 comparator; defines RST output voltage levels and timing references |
| 6 | RSTIN | High-impedance adjustable reset input; monitors third voltage via resistor divider against 626.5mV internal reference |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage supervision | Simultaneous monitoring of VCC1 and VCC2 with separate factory-trimmed thresholds avoids single-point failure in multirail systems |
| Adjustable third-voltage monitor (RSTIN) | 626.5mV internal reference enables accurate monitoring of auxiliary rails (e.g., 1.2V, 1.8V) using high-value resistors for <100nA leakage |
| Dual-mode watchdog timer | 35s startup period accommodates complex boot sequences; 1.12s normal timeout ensures rapid fault detection during runtime |
| Guaranteed reset validity to 0.8V | Ensures correct reset state even during deep brownout conditions where VCC1 or VCC2 drops near silicon turn-on threshold |
| Immunity to short VCC transients | Withstands ≤20µs negative glitches up to 100mV below threshold - prevents spurious resets in noisy power environments |
Applications
| Telecom Power Sequencing | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Monitoring 3.3V backplane and 2.5V FPGA core rails in carrier-grade line cards during hot-swap insertion and thermal stress. IC Role / Device Role / Timing Role: Dual-supply supervisor asserting coordinated reset to prevent FPGA configuration corruption during rail instability. Use Value: Factory-trimmed 2.925V thresholds on both rails ensure simultaneous detection within ±1.5%, eliminating race conditions during power-up/down. |
Use Scenario: Supervising 5V system logic and 3.3V microcontroller supply in DIN-rail mounted programmable logic controllers exposed to wide ambient temperature swings. IC Role / Device Role / Timing Role: Primary supervisory guard ensuring deterministic reset during voltage sags caused by motor switching noise or long cable drops. Use Value: -40°C to +125°C operation and 14µA quiescent current enable reliable field deployment without thermal derating or battery drain concerns. |
| Automotive ADAS Camera ECU | Portable Medical Sensor Hub |
Use Scenario: Validating 12V-to-3.3V DC-DC output and 1.2V image sensor analog supply in rear-view camera modules operating under engine cranking conditions. IC Role / Device Role / Timing Role: Dual-rail supervisor with RSTIN monitoring auxiliary 1.8V ISP supply, triggering reset before sensor data corruption occurs. Use Value: Guaranteed reset assertion down to VCC = 0.8V prevents lockup during 6V cranking events, while 1.1ms timeout aligns with fast-boot SoC requirements. |
Use Scenario: Managing power integrity for Bluetooth LE MCU (3.0V), analog front-end (2.8V), and rechargeable Li-ion protection circuit (4.2V) in handheld diagnostic devices. IC Role / Device Role / Timing Role: Centralized voltage guardian enabling safe shutdown when any rail falls below operational margin during battery discharge. Use Value: Adjustable RSTIN input allows precise 2.75V trip point for Li-ion end-of-discharge detection, extending usable battery life without firmware intervention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326UT29D3+ | Single-supply supervisor (VCC only); no VCC2 or RSTIN inputs; 2.93V fixed threshold; 1.1ms timeout | Lacks dual-rail monitoring and third-voltage adjustability - suitable only for single-rail systems with identical threshold needs | Select when cost-sensitive designs require basic reset only on one rail and do not need auxiliary monitoring |
| TPS3808G33DBVR | Single-supply supervisor (VCC only); 3.3V fixed threshold; 200ms timeout; 2.5µA IQ; no watchdog or RSTIN | No dual-voltage capability, no adjustable input, longer timeout - optimized for low-power always-on monitoring, not multirail coordination | Choose for ultra-low-quiescent applications where only primary rail supervision is required and timing budget allows 200ms hold |
Compared with MAX6723AUTVDD3+, MAX6326UT29D3+ reduces functionality by removing VCC2 and RSTIN channels but lowers BOM count in single-rail systems, while TPS3808G33DBVR trades dual-supply capability for 5.6× lower quiescent current - making it viable only where third-rail monitoring and coordinated reset timing are nonessential.
Availability
MAX6723AUTVDD3+ is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, and automotive ADAS ECUs requiring stable component supply with guaranteed long-term manufacturability and extended temperature support.
Supply support for MAX6723AUTVDD3+ 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 ultra-low-voltage microprocessor supervision with dual/third-rail monitoring, watchdog, and manual reset - engineered for robustness in multivoltage embedded systems where power integrity is mission-critical.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6723AUTVDD3+?
The MAX6723AUTVDD3+ uses the 'S' suffix for both VCC1 and VCC2 thresholds, specifying 2.850V (min), 2.925V (typ), and 3.000V (max) for each rail. These factory-trimmed values are guaranteed over -40°C to +125°C with ±1.5% tolerance, enabling precise coordination between primary and secondary supply monitoring in the MAX6723AUTVDD3+.
Does the MAX6723AUTVDD3+ support watchdog functionality, and how is it configured?
Yes, the MAX6723AUTVDD3+ includes a dual-mode watchdog timer with a 35s minimum startup period and 1.12s minimum normal timeout. To enable it, connect WDI to a microcontroller I/O pin that toggles regularly; leave WDI unconnected to disable. The MAX6723AUTVDD3+ watchdog clears on any rising or falling edge and asserts RST if WDI remains static beyond the timeout.
Can the MAX6723AUTVDD3+ monitor a third voltage, and what is the reference accuracy?
Yes, the MAX6723AUTVDD3+ supports third-voltage monitoring via the RSTIN pin, which compares the external voltage against a 626.5mV (typ) internal reference with ±15mV max deviation. This allows accurate setup of custom thresholds (e.g., 1.2V, 1.8V) using a resistor divider, with input bias current <100nA to minimize loading in the MAX6723AUTVDD3+.
What is the reset output type and drive capability of the MAX6723AUTVDD3+?
The MAX6723AUTVDD3+ features a push-pull active-low RST output referenced to VCC1, capable of sinking 3.2mA at VCC1 ≥ 4.5V with VOL ≤ 0.4V. It does not require an external pullup resistor and maintains valid logic levels down to VCC1 = 0.8V - a key reliability feature confirmed in the MAX6723AUTVDD3+ datasheet absolute maximum ratings.
Is the MAX6723AUTVDD3+ qualified for automotive applications?
The MAX6723AUTVDD3+ itself is not AEC-Q100 qualified; however, the pin-compatible MAX6719AUTTWD1/V+T variant in the same family is AEC-Q100 Grade 2 qualified (-40°C to +105°C). For automotive use requiring qualification, engineers should select that variant - the MAX6723AUTVDD3+ is intended for industrial and telecom applications per its -40°C to +125°C rating.
MAX6723AUTVDD3+ 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:
- 3
- Voltage - Threshold:
- 0.788V, 1.575V, 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
MAX6723AUTVDD3+ FAQ
1.How can I place an order for MAX6723AUTVDD3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6723AUTVDD3+ 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 MAX6723AUTVDD3+ reliable?
The price and inventory of MAX6723AUTVDD3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6723AUTVDD3+ is usually 5 days.
3.What payment methods are accepted for MAX6723AUTVDD3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6723AUTVDD3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6723AUTVDD3+?
MAX6723AUTVDD3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6723AUTVDD3+ 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 MAX6723AUTVDD3+?
For technical support, including MAX6723AUTVDD3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6723AUTVDD3+ requirements.
6.How does Aetrix verify that MAX6723AUTVDD3+ is sourced from the original manufacturer or authorized distributors?
All MAX6723AUTVDD3+ 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 MAX6723AUTVDD3+ meets industry standards.
7.What is the process for return or replacement of MAX6723AUTVDD3+?
All MAX6723AUTVDD3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6723AUTVDD3+, 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 MAX6723AUTVDD3+ part is unused and in its original packaging.
Return procedure for MAX6723AUTVDD3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6723AUTVDD3+ Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
