My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6722UTSDD3
- Part No.:
- MAX6722UTSDD3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6722UTSDD3.pdf
- Description:
- IC SUPERVISOR MPU
- Quantity:
- Payment:
- Shipping:
Inventory:1,269
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
The MAX6722UTSDD3 from Maxim Integrated is a dual-voltage microprocessor supervisory circuit in 6-pin SOT23 package, monitoring VCC1 (4.625V threshold) and VCC2 (3.075V threshold) with 210ms reset timeout, push-pull active-low RST output, and manual-reset input - used to ensure reliable boot and brownout recovery in embedded power management systems.
For engineers reviewing the MAX6722UTSDD3 datasheet, MAX6722UTSDD3 pinout, MAX6722UTSDD3 application, or MAX6722UTSDD3 equivalent, key selection criteria include guaranteed reset validity down to VCC = 0.8V, 14µA typical supply current at 3.6V, immunity to short VCC transients, and compatibility with 1.8V/3.3V dual-rail systems requiring deterministic reset timing.
Technical Context
This device implements dual independent voltage comparators with factory-trimmed thresholds (VTH1 = 4.625V, VTH2 = 3.075V), a programmable reset timeout timer (210ms min), and push-pull RST output referenced to VCC1. It guarantees correct reset logic state when either VCC1 or VCC2 remains ≥ 0.8V.
The MAX6722UTSDD3 includes an internal 50kΩ pullup on MR, supports CMOS-level manual reset assertion, and features 20µs VCC-to-RST delay with 0.5% reset threshold hysteresis - enabling robust operation in noisy industrial and telecom environments without external debounce.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 4.625V (factory-trimmed falling threshold for primary supply monitoring) |
| VCC2 Threshold | 3.075V (factory-trimmed falling threshold for secondary supply monitoring) |
| Reset Timeout | 210ms minimum (ensures µP completes initialization before release) |
| Supply Current | 14µA typical at 3.6V (enables ultra-low-power battery-backed operation) |
| Operating Temp | -40°C to +125°C (supports automotive under-hood and industrial control applications) |
| Reset Output Type | Push-pull active-low (no external pullup required; drives directly into µP reset pin) |
| MR Input | Active-low with 50kΩ internal pullup to VCC1 (simplifies manual reset switch interface) |
Pinout & Package
Package: 6-pin SOT23 (2.9mm × 1.6mm × 1.1mm, JEDEC MO-178AA).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Push-pull active-low reset output referenced to VCC1; asserts when VCC1/VCC2 drops below threshold or MR is pulled low |
| 2 | GND | Ground reference for all internal comparators and logic |
| 3 | MR | Active-low manual-reset input with internal 50kΩ pullup to VCC1; 1µs minimum pulse width required |
| 4 | VCC2 | Secondary supply input (powers internal circuitry when > VCC1; monitored at 3.075V threshold) |
| 5 | VCC1 | Primary supply input (powers internal circuitry when > VCC2; monitored at 4.625V threshold) |
| 6 | NC | No connect - must be left floating per datasheet; not internally bonded |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneous supervision of 4.625V (VCC1) and 3.075V (VCC2) rails with separate comparators and hysteresis |
| Guaranteed reset validity down to 0.8V | Ensures clean reset assertion even during deep brownout conditions before full power collapse |
| Immunity to short VCC transients | Rejects glitches ≤20µs duration (at 100mV overdrive), eliminating spurious resets in electrically noisy systems |
| Low quiescent current | 14µA typical at 3.6V enables >10-year battery life in always-on monitoring applications |
| Push-pull RST output | Eliminates need for external pullup resistor; compatible with bidirectional µP reset I/O via 4.7kΩ series resistor |
Applications
| Industrial PLC Power Sequencing | Telecom Line Card Supervision |
|---|---|
Use Scenario: Monitoring dual 3.3V/4.8V power rails in programmable logic controller backplane modules during cold start and hot-swap events. IC Role / Device Role / Timing Role: Dual-voltage supervisor asserting synchronized reset until both rails stabilize above 3.075V and 4.625V respectively, with 210ms hold time. Use Value: Prevents firmware corruption by blocking µP execution until stable dual-rail power is confirmed - critical for deterministic I/O initialization. | Use Scenario: Ensuring reliable boot of FPGA-based line cards in carrier-grade access equipment powered from -48V DC with local 3.3V/4.8V regulation. IC Role / Device Role / Timing Role: Primary supervisor for 4.625V core rail and 3.075V I/O rail; provides glitch-immune reset during rectifier switching transients. Use Value: 14µA supply current extends backup battery runtime; -40°C to +125°C rating supports fanless chassis operation. |
| Automotive Infotainment Head Unit | Medical Portable Diagnostic Device |
Use Scenario: Managing power-up sequencing of application processor (1.2V core) and display interface (3.3V I/O) supplied from multi-output DC-DC converter. IC Role / Device Role / Timing Role: Monitors 4.625V main 5V-derived rail and 3.075V 3.3V rail; asserts reset if either sags during engine cranking. Use Value: Guaranteed reset validity down to 0.8V prevents lockup during 6V battery dips; push-pull output eliminates BOM cost of pullup resistor. | Use Scenario: Supervising dual Li-ion battery–derived rails (3.3V system, 4.625V analog front-end) in handheld ultrasound probe with strict low-power requirements. IC Role / Device Role / Timing Role: Dual-threshold monitor with 210ms timeout ensures ADC and RF subsystems fully initialize before data acquisition begins. Use Value: 14µA quiescent current extends single-charge operating time; SOT23-6 footprint minimizes PCB area in space-constrained enclosure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326US29D3+ | Single-supply supervisor (2.93V threshold), no VCC2 monitoring, 200ms timeout, same SOT23-6 package | Lacks dual-rail capability; suitable only for single-rail systems where VCC2 supervision is unnecessary | Select when only primary rail monitoring is required and board space allows reuse of existing layout |
| TPS3808G33DBVR | Single-supply supervisor (3.3V threshold), 200ms timeout, 2.5µA supply current, SOT23-6 | No VCC2 input or MR pin; lower current but no manual reset or secondary rail support | Prefer for ultra-low-power single-rail applications where MR and dual monitoring are not needed |
Compared with MAX6722UTSDD3, MAX6326US29D3+ reduces functionality by removing VCC2 monitoring and MR, while TPS3808G33DBVR trades dual-rail capability for significantly lower quiescent current - making MAX6722UTSDD3 the only option supporting simultaneous 4.625V/3.075V supervision with manual reset in SOT23-6.
Availability
MAX6722UTSDD3 is available at Aetrix Electronics and suitable for industrial PLC power sequencing, telecom line card supervision, and automotive infotainment head units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6722UTSDD3 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 power, sensing, and connectivity applications in industrial, automotive, and communications markets.
The MAX6715A–MAX6729A family delivers ultra-low-voltage dual/triple supervisory circuits optimized for space-constrained, high-reliability systems requiring deterministic reset behavior across wide temperature and supply ranges.
FAQ
What is the exact reset threshold voltage for VCC1 on the MAX6722UTSDD3?
The MAX6722UTSDD3 has a factory-trimmed VCC1 reset threshold of 4.625V (minimum 4.500V, maximum 4.750V) for falling voltage detection. This value is fixed by the "TD" suffix in the part number and is guaranteed over the full -40°C to +125°C operating temperature range with 20ppm/°C tempco.
Does the MAX6722UTSDD3 support monitoring a third voltage rail?
No, the MAX6722UTSDD3 does not support a third voltage rail. It is a dual-supply supervisor with dedicated VCC1 and VCC2 inputs only. Models like MAX6723A–MAX6727A add RSTIN for adjustable third-rail monitoring, but MAX6722UTSDD3 lacks that pin and internal circuitry.
What is the function of Pin 6 on the MAX6722UTSDD3?
Pin 6 on the MAX6722UTSDD3 is a no-connect (NC) terminal - it is not internally bonded and must be left unconnected on the PCB. This differs from other variants in the MAX6715A–MAX6729A family that use Pin 6 for WDI, PFI, or RSTIN depending on configuration.
Can the MAX6722UTSDD3 operate with VCC1 = 2.5V?
No, the MAX6722UTSDD3 requires VCC1 ≥ 4.5V to meet its specified 4.625V threshold accuracy. While the device may power up at lower VCC1 voltages, the reset comparator will not guarantee correct operation below VCC1 = 4.5V due to internal reference limitations - always maintain VCC1 within 4.5V–5.5V for full specification compliance.
Is the reset output of the MAX6722UTSDD3 push-pull or open-drain?
The MAX6722UTSDD3 features a push-pull active-low RST output (Pin 1), referenced to VCC1. It does not require an external pullup resistor and can directly drive standard CMOS reset inputs. This is confirmed by the "U" in the part number prefix and the "D" in the suffix, indicating push-pull output type per Maxim's ordering guide.
MAX6722UTSDD3 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:
- 2
- Voltage - Threshold:
- 0.788V, 2.188V
- Output:
- Push-Pull, Totem Pole
- 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
MAX6722UTSDD3 FAQ
1.How can I place an order for MAX6722UTSDD3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6722UTSDD3 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 MAX6722UTSDD3 reliable?
The price and inventory of MAX6722UTSDD3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6722UTSDD3 is usually 5 days.
3.What payment methods are accepted for MAX6722UTSDD3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6722UTSDD3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6722UTSDD3?
MAX6722UTSDD3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6722UTSDD3 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 MAX6722UTSDD3?
For technical support, including MAX6722UTSDD3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6722UTSDD3 requirements.
6.How does Aetrix verify that MAX6722UTSDD3 is sourced from the original manufacturer or authorized distributors?
All MAX6722UTSDD3 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 MAX6722UTSDD3 meets industry standards.
7.What is the process for return or replacement of MAX6722UTSDD3?
All MAX6722UTSDD3 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6722UTSDD3, 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 MAX6722UTSDD3 part is unused and in its original packaging.
Return procedure for MAX6722UTSDD3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6722UTSDD3 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…
