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Analog Devices Inc./Maxim Integrated MAX6723UTSVD3
- Part No.:
- MAX6723UTSVD3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6723UTSVD3.pdf
- Description:
- IC SUPERVISOR MPU
- Quantity:
- Payment:
- Shipping:
Inventory:2,205
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Product details
Overview
The MAX6723UTSVD3 from Maxim Integrated is a dual-voltage, ultra-low-voltage microprocessor supervisory circuit in 6-pin SOT23 package, monitoring VCC1 (primary supply) at 3.075V threshold and VCC2 (secondary supply) at 2.925V threshold with 210ms reset timeout. It features an externally adjustable RSTIN input (626.5mV reference), manual-reset input (MR), and watchdog timer (35s startup / 1.12s normal timeout), used in telecom power management and industrial embedded controllers.
For engineers reviewing the MAX6723UTSVD3 datasheet, MAX6723UTSVD3 pinout, MAX6723UTSVD3 application, or MAX6723UTSVD3 equivalent, key selection criteria include dual-supply monitoring accuracy down to 0.8V operation, guaranteed reset validity during brownout, low 14µA typical supply current, and compatibility with 1.8V/0.9V core-I/O rail systems.
Technical Context
The MAX6723UTSVD3 implements dual independent voltage comparators with factory-trimmed thresholds for VCC1 and VCC2, plus a high-impedance RSTIN comparator referenced to a 626.5mV internal bandgap. Its reset logic asserts active-low RST/RST1 when any monitored voltage falls below its threshold and holds for a fixed 210ms minimum timeout after recovery.
It integrates a dual-mode watchdog timer: a 35s minimum startup period enables full system boot before watchdog supervision begins, followed by a 1.12s minimum normal timeout triggered by missing WDI edges. MR input includes internal 50kΩ pullup and 200ns reset assertion delay.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 3.075V (factory-trimmed falling threshold; monitors primary supply such as 3.3V I/O rail) |
| VCC2 Threshold | 2.925V (factory-trimmed falling threshold; monitors secondary supply such as 2.8V or 3.0V core rail) |
| RSTIN Reference | 626.5mV (internal precision reference enabling third-voltage monitoring down to 0.62V via resistor divider) |
| Reset Timeout | 210ms (minimum guaranteed duration of active-low reset pulse after all supplies recover) |
| Supply Current | 14µA typical at 3.6V (enables battery-backed or ultra-low-power always-on supervision) |
| Operating Temp | -40°C to +125°C (supports automotive under-hood and industrial control environments) |
| Watchdog Modes | 35s startup + 1.12s normal timeout (prevents false resets during boot while ensuring rapid fault detection in runtime) |
Pinout & Package
MAX6723UTSVD3 is housed in a 6-pin SOT23 package (2.9mm × 1.6mm × 1.1mm), RoHS-compliant and tape-and-reel packaged for automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RST/RST1 | Active-low reset output | Push-pull output referenced to VCC1; asserts low on VCC1/VCC2/RSTIN/MR fault and holds for 210ms timeout |
| 2 - GND | Ground reference | Common return path for all internal comparators, timers, and outputs; must be low-impedance |
| 3 - MR | Manual-reset input | Active-low input with internal 50kΩ pullup to VCC1; 200ns delay to RST assertion; debounced by design |
| 4 - VCC2 | Secondary supply input | Powers internal VCC2 comparator and RST2 logic; monitors 0.9V–3.3V rails; valid reset operation down to 0.8V |
| 5 - VCC1 | Primary supply input | Main power source for IC core; powers VCC1 comparator, watchdog, and RST/RST1 output; valid down to 0.8V |
| 6 - RSTIN | Adjustable reset input | High-impedance (±100nA) comparator input; triggers reset when voltage falls below 626.5mV reference |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneous supervision of VCC1 (3.075V) and VCC2 (2.925V) with separate comparators and hysteresis |
| Externally adjustable third-voltage monitor | RSTIN input with 626.5mV reference enables precise monitoring of auxiliary rails (e.g., 1.2V, 1.8V) using resistor dividers |
| Dual-mode watchdog timer | 35s startup window prevents spurious resets during boot; 1.12s runtime timeout ensures fast processor lockup detection |
| Guaranteed reset validity at low VCC | Functional reset assertion 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), reducing false resets in noisy power environments |
Applications
| Telecom Power Sequencing | Industrial PLC Controller |
|---|---|
Use Scenario: Monitoring dual DC-DC outputs (3.3V I/O and 2.8V FPGA core) in a base station power module. IC Role / Device Role / Timing Role: Dual-supply supervisor asserting synchronized reset if either rail drops below spec during hot-swap or load transient. Use Value: Prevents FPGA configuration corruption by holding reset until both rails stabilize for ≥210ms post-recovery. | Use Scenario: Supervising 3.0V CPU core and 2.5V I/O supply in a DIN-rail mounted programmable logic controller. IC Role / Device Role / Timing Role: Primary reset generator with MR input for field-service reboot and RSTIN for auxiliary 1.2V ADC reference rail. Use Value: Enables deterministic restart after brownout without requiring external timing components or firmware intervention. |
| Battery-Backed IoT Gateway | Automotive Infotainment Module |
Use Scenario: Managing main 3.3V LDO and backup 2.7V coin-cell supply in a cellular-connected edge gateway. IC Role / Device Role / Timing Role: Dual-threshold supervisor with watchdog to detect MCU hang during OTA update or deep-sleep wake-up. Use Value: 14µA quiescent current extends battery life; 35s watchdog startup avoids reset during extended boot sequences. | Use Scenario: Monitoring 3.0V infotainment SoC core and 2.9V display interface supply in a head-unit with wide ambient temperature range. IC Role / Device Role / Timing Role: High-temp-rated (−40°C to +125°C) supervisor ensuring reliable reset during cold-crank or thermal stress events. Use Value: Guaranteed reset operation at VCC = 0.8V prevents latch-up during engine cranking voltage sag. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6724UTSVD3 | Identical pinout, same VCC1/VCC2 thresholds (3.075V/2.925V) and 210ms timeout, but push-pull RST2 output instead of RST/RST1 dual output | Supports independent reset control for secondary domain (e.g., isolated peripheral reset) | Select MAX6724UTSVD3 when separate RST2 assertion for VCC2 faults is required |
| TPS3808G33DBVR | Single-supply supervisor (3.3V threshold only); no RSTIN, no watchdog; 200ms timeout; SOT23-6 package | Lacks dual-monitoring, adjustable input, and watchdog - suitable only for basic single-rail reset | Choose TPS3808G33DBVR only if system uses one regulated supply and requires lowest BOM cost |
Compared with MAX6723UTSVD3, MAX6724UTSVD3 adds dedicated RST2 control for secondary domain isolation, while TPS3808G33DBVR reduces functionality to single-rail supervision - making MAX6723UTSVD3 the optimal choice for systems requiring dual-rail coordination, third-voltage flexibility, and watchdog safety.
Availability
MAX6723UTSVD3 is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, and battery-powered IoT gateways requiring stable component supply across extended temperature and long product lifecycles.
Supply support for MAX6723UTSVD3 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, mixed-signal, and power management ICs for demanding industrial, automotive, and communications applications.
The MAX6715A–MAX6729A family delivers ultra-low-voltage, multi-rail supervision with integrated watchdog and manual reset - engineered specifically for reliability-critical embedded systems where power sequencing integrity and fault resilience are non-negotiable.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6723UTSVD3?
The MAX6723UTSVD3 has a factory-trimmed VCC1 reset threshold of 3.075V (±75mV) and VCC2 threshold of 2.925V (±75mV), per the "S" suffix in the part number (Reset Voltage Threshold Suffix Guide). These values are specified at 25°C with ±20ppm/°C tempco and apply to falling-edge detection only.
Does the MAX6723UTSVD3 support watchdog functionality, and what are its timing modes?
Yes, the MAX6723UTSVD3 includes a dual-mode watchdog timer: a 35s minimum startup period after any reset event (power-up, MR, or watchdog timeout), followed by a 1.12s minimum normal timeout triggered by missing WDI transitions. This architecture prevents false resets during boot while ensuring rapid fault detection during runtime.
Can the MAX6723UTSVD3 monitor a third voltage, and how is it configured?
Yes - the MAX6723UTSVD3 supports third-voltage monitoring via the RSTIN pin, which compares the applied voltage against a precise 626.5mV internal reference. A resistor divider network sets the external threshold (e.g., VEXT_TH = 626.5mV × (R1+R2)/R2), enabling supervision of rails as low as 0.62V with minimal current draw.
What is the operating temperature range and supply voltage limit for the MAX6723UTSVD3?
The MAX6723UTSVD3 operates from −40°C to +125°C and supports supply voltages from 0.8V to 5.5V on both VCC1 and VCC2 pins. Reset output logic remains guaranteed down to VCC1 or VCC2 = 0.8V, making it suitable for automotive and industrial applications with severe brownout conditions.
Is the MAX6723UTSVD3 pin-compatible with other devices in the MAX6715A–MAX6729A family?
Yes - the MAX6723UTSVD3 uses the standard 6-pin SOT23 package and shares identical pinout with all MAX6715A–MAX6729A variants in the 6-pin configuration (e.g., MAX6716, MAX6719, MAX6724). Functionality differs only in threshold values, timeout periods, and output configurations - not physical layout or electrical pin assignment.
MAX6723UTSVD3 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:
- Power Supply Monitor
- Number of Voltages Monitored:
- 3
- Voltage - Threshold:
- 1.575V, 2.925V, Adj
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
MAX6723UTSVD3 FAQ
1.How can I place an order for MAX6723UTSVD3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6723UTSVD3 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 MAX6723UTSVD3 reliable?
The price and inventory of MAX6723UTSVD3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6723UTSVD3 is usually 5 days.
3.What payment methods are accepted for MAX6723UTSVD3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6723UTSVD3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6723UTSVD3?
MAX6723UTSVD3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6723UTSVD3 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 MAX6723UTSVD3?
For technical support, including MAX6723UTSVD3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6723UTSVD3 requirements.
6.How does Aetrix verify that MAX6723UTSVD3 is sourced from the original manufacturer or authorized distributors?
All MAX6723UTSVD3 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 MAX6723UTSVD3 meets industry standards.
7.What is the process for return or replacement of MAX6723UTSVD3?
All MAX6723UTSVD3 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6723UTSVD3, 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 MAX6723UTSVD3 part is unused and in its original packaging.
Return procedure for MAX6723UTSVD3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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