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Analog Devices Inc./Maxim Integrated MAX6356RWUT+T
- Part No.:
- MAX6356RWUT+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6356RWUT+T.pdf
- Description:
- IC SUPERVISOR 3 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,278
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Product details
Overview
The MAX6356RWUT+T from Maxim Integrated is a triple-voltage microprocessor supervisory circuit with active-low push-pull reset output referenced to VCC1, 2.63V VCC1 threshold, 1.67V VCC2 threshold, and integrated RSTIN input for monitoring a third voltage at 1.22V. It operates over –40°C to +85°C in a 6-pin SOT23 package and supports multivoltage embedded systems requiring reliable power-on reset and undervoltage detection.
For engineers reviewing the MAX6356RWUT+T datasheet, MAX6356RWUT+T pinout, MAX6356RWUT+T application, or MAX6356RWUT+T equivalent, key selection criteria include its dual-supply monitoring capability, guaranteed RESET validity down to VCC1 = 1V or VCC2 = 1V, 100ms minimum reset pulse width, 20µA supply current, and compatibility with manual reset and third-voltage monitoring via RSTIN.
Technical Context
The MAX6356RWUT+T monitors three voltage rails: VCC1 (2.63V threshold), VCC2 (1.67V threshold), and an external rail via RSTIN (1.22V comparator input). Reset assertion occurs if any monitored voltage falls below its respective trip point, and the active-low push-pull RST output remains valid as long as either VCC1 ≥ 1V or VCC2 ≥ 1V.
It features factory-trimmed precision thresholds with ±0.05V typical accuracy over temperature, 20ppm/°C tempco, and internal glitch filtering on MR. The RSTIN input accepts external resistive dividers to scale higher voltages, with input current limited to ±25nA and hysteresis of 2.5mV - enabling accurate third-rail supervision without external comparators.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 2.63V ±0.05V at +25°C; guarantees reset assertion when primary supply drops below nominal system voltage |
| VCC2 Threshold | 1.67V ±0.05V at +25°C; enables supervision of auxiliary or I/O supply rails |
| RSTIN Threshold | 1.22V ±0.03V; allows precise third-voltage monitoring via external resistor divider |
| Reset Pulse Width | 100–280ms; ensures sufficient duration for full microprocessor initialization |
| Supply Current | 20µA typical; minimizes quiescent power draw in battery-powered or low-power systems |
| Operating Temp | –40°C to +85°C; qualified for industrial and extended-temperature embedded applications |
| RESET Validity | Guaranteed while VCC1 ≥ 1V or VCC2 ≥ 1V; maintains reset integrity during brownout conditions |
Pinout & Package
MAX6356RWUT+T is housed in a lead(Pb)-free 6-pin SOT23 package (U6-1 outline, 90-0175 land pattern), with 0.95mm pitch and 2.9mm × 1.6mm footprint. Pin 1 is RST (active-low push-pull, referenced to VCC1), Pin 2 is GND, Pin 3 is MR (debounced manual-reset input), Pin 4 is VCC2, Pin 5 is RSTIN (third-voltage monitor input), and Pin 6 is VCC1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RST | Active-low push-pull reset output | Drives low to assert reset; referenced to VCC1; no external pullup required |
| 2 - GND | Ground reference | Common return path for all internal circuits and monitored supplies |
| 3 - MR | Debounced manual-reset input | Pull low to force reset; internally debounced; valid over full temperature range |
| 4 - VCC2 | Secondary supply input & monitor rail | Provides power and is monitored at 1.67V threshold; must be ≤ VCC1 |
| 5 - RSTIN | Third-voltage comparator input | Monitors external rail via 1.22V internal reference; supports resistive scaling |
| 6 - VCC1 | Primary supply input & monitor rail | Provides main power and is monitored at 2.63V threshold; powers RSTIN circuitry |
Key Features
| Feature | Design Value |
|---|---|
| Triple-voltage supervision | Simultaneously monitors VCC1 (2.63V), VCC2 (1.67V), and third rail via RSTIN (1.22V) - eliminates need for discrete supervisors in multirail systems |
| Push-pull RST output | Active-low, VCC1-referenced output drives high/low without external pullup - simplifies interface with μP reset pins |
| Guaranteed operation down to 1V | RESET remains valid even if VCC1 or VCC2 drops to 1V - ensures robustness during brownout recovery |
| Low 20µA quiescent current | Enables use in always-on, battery-backed, or energy-constrained applications without compromising supervision reliability |
| Factory-trimmed precision thresholds | ±0.05V tolerance over temperature with 20ppm/°C tempco - reduces design margining and calibration overhead |
Applications
| Industrial PLC Power Sequencing | Medical Sensor Node Supervision |
|---|---|
Use Scenario: A programmable logic controller uses separate 2.6V core, 1.65V I/O, and 3.3V analog rails; sequencing must ensure all supplies stabilize before firmware execution. IC Role / Device Role / Timing Role: MAX6356RWUT+T monitors VCC1 (2.63V), VCC2 (1.67V), and third rail (via RSTIN) to generate synchronized reset after all rails exceed thresholds. Use Value: Eliminates discrete RC timing networks and external comparators, reducing BOM count and PCB area while guaranteeing 100ms minimum reset hold time. | Use Scenario: A portable ECG sensor node runs from a single Li-ion cell with DC-DC converters generating 2.6V MCU core, 1.65V ADC bias, and 3.3V signal chain rails. IC Role / Device Role / Timing Role: MAX6356RWUT+T asserts reset until all three rails are stable, using RSTIN to supervise the 3.3V rail via 2.7kΩ/1.3kΩ divider. Use Value: 20µA supply current extends battery life; guaranteed reset validity down to 1V prevents spurious resets during battery sag. |
| Automotive Body Control Module | Industrial IoT Gateway |
Use Scenario: A BCM requires fail-safe reset behavior across 2.6V microcontroller core, 1.65V CAN transceiver I/O, and 5V sensor interface rails. IC Role / Device Role / Timing Role: MAX6356RWUT+T supervises VCC1 (2.63V) and VCC2 (1.67V); RSTIN monitors 5V rail via 3.32kΩ/1.0kΩ divider to trigger reset if sensor supply fails. Use Value: Push-pull RST output directly drives MCU reset pin without level-shifting; –40°C to +85°C rating meets automotive under-hood requirements. | Use Scenario: An edge gateway integrates ARM Cortex-M7 (2.6V), Wi-Fi module (1.65V), and RS-485 transceiver (3.3V), requiring coordinated power-up sequencing. IC Role / Device Role / Timing Role: MAX6356RWUT+T monitors all three rails and generates a single reset signal that holds until all supplies meet thresholds. Use Value: Factory-trimmed thresholds eliminate calibration; 100ms min pulse width ensures complete bootloader execution before application startup. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triple-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6355RWUT+T | Open-drain RST output instead of push-pull; requires external pullup resistor | Suitable where reset line is shared with other open-drain devices or level translation is needed | Select MAX6355RWUT+T only if open-drain topology is required for wired-OR reset bus implementation |
| TPS3808G33DBVR | Single-supply supervisor (3.3V only); no VCC2 or RSTIN inputs; 350ms fixed timeout | Lacks triple-monitoring capability; cannot replace MAX6356RWUT+T in multirail systems without additional components | Use TPS3808G33DBVR only for single-rail 3.3V applications where cost and footprint are prioritized over multivoltage flexibility |
Compared with MAX6355RWUT+T and TPS3808G33DBVR, the MAX6356RWUT+T uniquely delivers push-pull reset output, dual-supply monitoring, and third-rail supervision in one 6-pin SOT23 device - reducing component count and layout complexity in multivoltage designs.
Availability
MAX6356RWUT+T is available at Aetrix Electronics and suitable for industrial PLCs, medical sensor nodes, automotive body control modules, and industrial IoT gateways requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX6356RWUT+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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and computing applications.
The MAX6351–MAX6360 product line delivers precision multivoltage supervision for embedded systems where reliability, low power, and small footprint are critical - targeting applications with complex power architectures and stringent reset timing requirements.
FAQ
What is the function of the RSTIN pin on the MAX6356RWUT+T?
The RSTIN pin on the MAX6356RWUT+T is a dedicated third-voltage monitor input with a precise 1.22V internal reference. It allows supervision of an additional supply rail beyond VCC1 and VCC2 by connecting an external resistive divider. The MAX6356RWUT+T asserts reset if the voltage at RSTIN falls below 1.22V, enabling flexible multirail monitoring without external comparators or additional ICs.
Does the MAX6356RWUT+T provide watchdog timer functionality?
No, the MAX6356RWUT+T does not include a watchdog timer. Watchdog functionality is exclusive to the MAX6358/MAX6359/MAX6360 variants in the same family. The MAX6356RWUT+T is specifically designed for triple-voltage supervision with manual reset and RSTIN input, but lacks WDI pin and associated timeout circuitry.
What is the maximum supply voltage the MAX6356RWUT+T can tolerate on VCC1 and VCC2?
The MAX6356RWUT+T supports VCC1 and VCC2 up to +5.5V, with absolute maximum ratings of –0.3V to +6V relative to GND. However, normal operation is specified for VCC1 and VCC2 between +1.2V and +5.5V over the full –40°C to +85°C temperature range. Exceeding +5.5V may cause permanent damage.
Can the MAX6356RWUT+T operate with VCC1 and VCC2 at different voltage levels?
Yes, the MAX6356RWUT+T is explicitly designed for asymmetric dual-supply operation. VCC1 and VCC2 may differ - for example, VCC1 = 2.63V and VCC2 = 1.67V as specified for this variant - and the device independently monitors each against its factory-set threshold. The RST output remains valid as long as either supply stays above +1V.
Is the MAX6356RWUT+T pin-compatible with other devices in the MAX6351–MAX6360 family?
The MAX6356RWUT+T shares the same 6-pin SOT23 package and pinout as MAX6351, MAX6355, MAX6357–MAX6360, but functional differences exist: MAX6356RWUT+T has push-pull RST referenced to VCC1, while MAX6355RWUT+T uses open-drain RST, and MAX6357RWUT+T references RST to VCC2. Direct substitution requires verification of reset topology and RSTIN usage.
MAX6356RWUT+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 3
- Voltage - Threshold:
- 1.67V, 2.63V, Adj
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-6
MAX6356RWUT+T FAQ
1.How can I place an order for MAX6356RWUT+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6356RWUT+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 MAX6356RWUT+T reliable?
The price and inventory of MAX6356RWUT+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6356RWUT+T is usually 5 days.
3.What payment methods are accepted for MAX6356RWUT+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6356RWUT+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6356RWUT+T?
MAX6356RWUT+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6356RWUT+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 MAX6356RWUT+T?
For technical support, including MAX6356RWUT+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6356RWUT+T requirements.
6.How does Aetrix verify that MAX6356RWUT+T is sourced from the original manufacturer or authorized distributors?
All MAX6356RWUT+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 MAX6356RWUT+T meets industry standards.
7.What is the process for return or replacement of MAX6356RWUT+T?
All MAX6356RWUT+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6356RWUT+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 MAX6356RWUT+T part is unused and in its original packaging.
Return procedure for MAX6356RWUT+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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