My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6722UTZGD3+
- Part No.:
- MAX6722UTZGD3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6722UTZGD3+.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,021
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6722UTZGD3+ from Maxim Integrated is a dual-voltage microprocessor supervisory circuit in SOT23-6 package, monitoring VCC1 (primary) and VCC2 (secondary) supplies with factory-trimmed reset thresholds of 4.625V (VTH1) and 3.075V (VTH2), 210ms minimum reset timeout, push-pull active-low RST output, manual reset input (MR), and watchdog timer support. It ensures reliable system boot and brownout recovery in multivoltage embedded systems.
For engineers reviewing the MAX6722UTZGD3+ datasheet, MAX6722UTZGD3+ pinout, MAX6722UTZGD3+ application, or MAX6722UTZGD3+ equivalent, key selection criteria include dual-supply threshold accuracy (±1.5% over temperature), guaranteed reset validity down to VCC1/VCC2 = 0.8V, low 14µA typical supply current at 3.6V, and integrated watchdog with 35s startup + 1.12s normal timeout modes.
Technical Context
The MAX6722UTZGD3+ implements independent voltage comparators for VCC1 and VCC2, each with 20ppm/°C tempco and 0.5% hysteresis referenced to typical threshold. Reset assertion occurs when either supply falls below its trimmed threshold, and the internal timeout timer holds RST low for ≥210ms after all monitored voltages recover.
It integrates a dual-mode watchdog timer: 35s minimum initial timeout after any reset event (power-up, MR, or watchdog timeout), followed by 1.12s minimum normal timeout triggered by WDI edge transitions. MR features internal 50kΩ pullup to VCC1 and 100ns glitch rejection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 4.625V (typ), ±1.5% over -40°C to +85°C - sets primary supply brownout detection point for 5V or 4.8V rails |
| VCC2 Threshold | 3.075V (typ), ±1.5% over -40°C to +85°C - enables reliable monitoring of 3.3V I/O or auxiliary supplies |
| Reset Timeout | 210ms (min) - ensures µP completes power-on initialization before release from reset |
| Supply Current | 14µA (typ) at 3.6V - supports ultra-low-power battery-backed or always-on monitoring |
| Watchdog Modes | 35s startup + 1.12s normal timeout - accommodates long boot sequences then enforces tight software execution checks |
| Reset Output Type | Push-pull active-low RST referenced to VCC1 - eliminates need for external pullup and drives directly into µP reset pin |
| Operating Temp | -40°C to +85°C - qualified for industrial and telecom equipment environments |
Pinout & Package
MAX6722UTZGD3+ uses a 6-pin SOT23-6 package with exposed pad (thermal enhancement). Pin functions are validated per Maxim's official pin description table for MAX6722 series.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Active-low push-pull reset output referenced to VCC1; asserts when VCC1 < 4.625V, VCC2 < 3.075V, or MR pulled low |
| 2 | GND | Analog/digital ground reference for all internal comparators, timers, and output drivers |
| 3 | MR | Active-low manual reset input with internal 50kΩ pullup to VCC1; 1µs minimum pulse width required |
| 4 | VCC2 | Secondary supply input (0.9V–3.3V range); powers internal VCC2 comparator and sets RST2 reference if used |
| 5 | WDI | Watchdog input; rising/falling edges reset 1.12s normal timeout; held high/low >35s triggers initial watchdog reset |
| 6 | VCC1 | Primary supply input (1.8V–5.0V range); powers device core, sets RST output reference, and feeds VCC1 comparator |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitors | Simultaneous VCC1 (4.625V) and VCC2 (3.075V) supervision with separate comparators avoids single-point failure in multirail systems |
| Guaranteed reset validity down to 0.8V | Ensures clean, deterministic reset assertion even during deep brownout conditions where VCC1 or VCC2 drops near 0.8V |
| Integrated dual-mode watchdog | 35s startup timeout allows full system boot; 1.12s normal timeout detects stalled firmware without requiring external timing components |
| Push-pull RST output | Drives µP reset pin directly without external pullup resistor, reducing BOM count and PCB area vs. open-drain alternatives |
| Low 14µA supply current | Enables continuous supervision in battery-powered applications with multi-year runtime on coin cells or energy-harvesting sources |
Applications
| Industrial PLC Controllers | Telecom Line Cards |
|---|---|
Use Scenario: Monitoring 5V main logic rail and 3.3V I/O rail in DIN-rail mounted programmable logic controllers subject to wide ambient temperature swings and EMI. IC Role / Device Role / Timing Role: Dual-supply supervisor ensuring deterministic reset during AC line sags, hot-swap events, or thermal shutdown recovery. Use Value: Prevents firmware corruption by holding µP in reset until both rails stabilize above 4.625V and 3.075V with 210ms debounce, meeting IEC 61000-4-11 immunity requirements. |
Use Scenario: Supervising primary 3.3V SerDes supply and secondary 1.2V core supply in carrier-grade Ethernet switch line cards with redundant power inputs. IC Role / Device Role / Timing Role: Fault detector triggering controlled reboot upon undervoltage on either rail, coordinated with FPGA configuration state machine. Use Value: Eliminates need for discrete RC reset circuits; 14µA quiescent current extends backup battery life during mains failure, supporting 72-hour hold-up per GR-63-CORE. |
| Medical Diagnostic Handhelds | Automotive Infotainment ECUs |
Use Scenario: Ensuring safe boot sequence in portable ultrasound devices powered by Li-ion batteries discharging from 4.2V to 3.0V, with separate 1.8V sensor interface rail. IC Role / Device Role / Timing Role: Dual-threshold supervisor validating both battery-derived main supply and regulated low-noise analog supply before enabling ADC and RF front-end. Use Value: Factory-trimmed 4.625V/3.075V thresholds match nominal Li-ion and LDO outputs; 0.8V reset validity margin prevents spurious resets during battery pulse loading. |
Use Scenario: Monitoring 5V infotainment head-unit supply and 3.3V CAN transceiver rail in automotive dashboards exposed to load-dump and cold-crank transients. IC Role / Device Role / Timing Role: System integrity guardian asserting reset during ISO 7637-2 Pulse 4 (cold crank) dips below 3.075V on VCC2 while maintaining operation on VCC1. Use Value: Immunity to short VCC transients (≤20µs at 100mV overdrive) prevents false resets during engine cranking; push-pull RST drives automotive µP reset pins directly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6721UTZGD3+ | Open-drain RST output (vs. push-pull); identical thresholds, timeout, and watchdog specs | Requires external pullup resistor; suitable where level-shifting or wired-OR reset bus is needed | Select MAX6721UTZGD3+ only when open-drain topology is required for system-level reset arbitration |
| TPS3808G33DBVR | Single-supply monitor (3.3V only); no VCC2 input, no WDI, 200ms timeout, 1.6µA IQ | Lacks dual-rail capability and watchdog; optimized for ultra-low-power 3.3V-only systems | Choose TPS3808G33DBVR only for cost-sensitive, single-rail designs where watchdog and secondary supply monitoring are unnecessary |
Compared with MAX6722UTZGD3+, MAX6721UTZGD3+ offers identical supervision functionality but requires external pullup due to open-drain RST, while TPS3808G33DBVR reduces cost and quiescent current but sacrifices dual-voltage monitoring, watchdog, and manual reset-making MAX6722UTZGD3+ optimal for robust multirail industrial systems requiring guaranteed reset behavior across voltage and temperature extremes.
Availability
MAX6722UTZGD3+ is available at Aetrix Electronics and suitable for industrial PLC controllers, telecom line cards, medical handheld diagnostics, and automotive infotainment ECUs requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for MAX6722UTZGD3+ 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and computing markets.
MAX6722UTZGD3+ belongs to the MAX6715–MAX6729 family of ultra-low-voltage SOT23 µP supervisory circuits, designed specifically for space-constrained multivoltage systems needing precise, low-power, and highly reliable power-monitoring with integrated watchdog and manual reset.
FAQ
What are the exact reset threshold voltages for MAX6722UTZGD3+?
The MAX6722UTZGD3+ has factory-trimmed reset thresholds of 4.625V (VTH1) for VCC1 and 3.075V (VTH2) for VCC2, with ±1.5% tolerance over the full -40°C to +85°C operating range. These values are fixed by the "ZG" suffix per Maxim's Reset Voltage Threshold Suffix Guide and do not require external resistor programming.
Does MAX6722UTZGD3+ support watchdog functionality, and what are its timing modes?
Yes, MAX6722UTZGD3+ includes a dual-mode watchdog timer: a 35s minimum initial timeout after any reset event (power-up, MR, or watchdog timeout), followed by a 1.12s minimum normal timeout that begins after the first valid WDI edge transition. This architecture accommodates lengthy boot sequences while enforcing strict runtime software supervision.
What is the reset output type of MAX6722UTZGD3+, and how does it interface to a microprocessor?
MAX6722UTZGD3+ features a push-pull active-low RST output referenced to VCC1. It drives directly into standard µP reset pins without requiring an external pullup resistor, simplifying layout and improving noise immunity compared to open-drain alternatives like MAX6721UTZGD3+.
Can MAX6722UTZGD3+ monitor a third supply voltage such as a battery or auxiliary rail?
No, MAX6722UTZGD3+ is a dual-supply monitor (VCC1 and VCC2 only) and does not include the RSTIN input required for externally adjustable third-voltage monitoring. For triple-voltage supervision, consider MAX6723UTZGD3+ or MAX6724UTZGD3+, which add the RSTIN pin with 626mV internal reference.
What is the minimum supply voltage at which MAX6722UTZGD3+ guarantees correct reset output logic state?
MAX6722UTZGD3+ guarantees valid reset output logic state down to VCC1 = 0.8V or VCC2 = 0.8V - meaning RST remains correctly asserted or deasserted even during deep brownout conditions where either supply drops to 0.8V, a critical feature for fail-safe operation in industrial and automotive systems.
MAX6722UTZGD3+ 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:
- 1.11V, 2.313V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-6
MAX6722UTZGD3+ FAQ
1.How can I place an order for MAX6722UTZGD3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6722UTZGD3+ 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 MAX6722UTZGD3+ reliable?
The price and inventory of MAX6722UTZGD3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6722UTZGD3+ is usually 5 days.
3.What payment methods are accepted for MAX6722UTZGD3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6722UTZGD3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6722UTZGD3+?
MAX6722UTZGD3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6722UTZGD3+ 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 MAX6722UTZGD3+?
For technical support, including MAX6722UTZGD3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6722UTZGD3+ requirements.
6.How does Aetrix verify that MAX6722UTZGD3+ is sourced from the original manufacturer or authorized distributors?
All MAX6722UTZGD3+ 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 MAX6722UTZGD3+ meets industry standards.
7.What is the process for return or replacement of MAX6722UTZGD3+?
All MAX6722UTZGD3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6722UTZGD3+, 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 MAX6722UTZGD3+ part is unused and in its original packaging.
Return procedure for MAX6722UTZGD3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6722UTZGD3+ 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…
