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Analog Devices Inc./Maxim Integrated MAX6356TWUT
- Part No.:
- MAX6356TWUT
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6356TWUT.pdf
- Description:
- IC SUPERVISOR 3 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,188
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Product details
Overview
The MAX6356TWUT from Maxim Integrated is a triple-voltage microprocessor supervisory circuit with active-low push-pull reset output referenced to VCC1, 3.08V 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 precise power-up sequencing and fault detection.
For engineers reviewing the MAX6356TWUT datasheet, MAX6356TWUT pinout, MAX6356TWUT application, or MAX6356TWUT equivalent, key selection criteria include its dual-supply monitoring capability (VCC1/VCC2), adjustable third-voltage supervision via RSTIN, guaranteed RESET validity down to 1.0V on either supply, 20µA quiescent current, and compatibility with battery-powered and industrial control systems.
Technical Context
The MAX6356TWUT implements a dual-threshold comparator architecture monitoring VCC1 (3.08V nominal) and VCC2 (1.67V nominal), asserting reset if either supply falls below its respective trip point. Its RSTIN input provides a fixed 1.22V threshold for external voltage monitoring using a resistive divider.
Reset assertion is guaranteed as long as either VCC1 ≥ 1.0V or VCC2 ≥ 1.0V, enabling robust operation during brownout conditions. The device features debounced TTL/CMOS-compatible manual reset (MR) and delivers a minimum 100ms reset pulse width after power-on or MR release.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 3.08V ±0.08V (–40°C to +85°C); ensures reliable reset assertion when primary supply drops below nominal 3.3V rail |
| VCC2 Threshold | 1.67V ±0.05V (–40°C to +85°C); enables supervision of low-voltage auxiliary rails such as 1.8V or 1.5V domains |
| RSTIN Threshold | 1.22V ±0.03V; allows precise third-voltage monitoring (e.g., 1.2V core supply) via external resistor divider |
| Supply Current | 20µA typical; minimizes standby power draw in battery-critical portable applications |
| Reset Pulse Width | 100ms minimum; satisfies μP reset timing requirements for stable initialization |
| Operating Temp | –40°C to +85°C; qualified for industrial and extended-temperature embedded deployments |
| Package | 6-pin SOT23; surface-mount footprint compatible with high-density PCB layouts |
Pinout & Package
MAX6356TWUT is housed in a 6-pin SOT23 package with 0.95mm pitch, JEDEC MO-178AA compliant, suitable for reflow soldering and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST1 | Active-low push-pull reset output referenced to VCC1; drives low without external pull-up, compatible with CMOS inputs |
| 2 | GND | Analog/digital ground reference; must be connected to system common ground plane |
| 3 | MR | Debounced manual-reset input; pulling low forces reset; internally pulled up ~63.5kΩ to VCC1 |
| 4 | VCC2 | Secondary supply input and monitor rail; powers device when > VCC1 and triggers reset if < 1.67V |
| 5 | RSTIN | Adjustable reset comparator input; asserts reset when voltage falls below 1.22V; powered by VCC1 |
| 6 | VCC1 | Primary supply input and monitor rail; powers device when > VCC2 and triggers reset if < 3.08V |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage thresholds | Simultaneous monitoring of 3.08V and 1.67V supplies eliminates need for discrete comparators or multiple supervisors |
| Third-voltage supervision via RSTIN | 1.22V internal reference enables accurate monitoring of 1.2V core or other auxiliary rails using only two external resistors |
| Guaranteed RESET down to 1.0V | Ensures valid reset signal even during deep brownout-critical for fail-safe shutdown in industrial controllers |
| 20µA ultra-low supply current | Extends battery life in portable instrumentation without compromising supervision accuracy |
| 100ms min reset pulse width | Meets or exceeds reset timing requirements of most ARM Cortex-M and legacy 8-bit microcontrollers |
Applications
| Industrial PLCs | Battery-Powered IoT Sensors |
|---|---|
Use Scenario: Monitoring dual-rail power (3.3V I/O + 1.8V logic) and 1.2V core supply in programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: Triple-voltage supervisor ensuring synchronized reset across all voltage domains during cold start or undervoltage events. Use Value: Prevents partial initialization and latch-up by guaranteeing coordinated reset assertion before µP firmware execution begins. | Use Scenario: Supervising 3.0V battery, 1.8V sensor interface, and 1.2V MCU core in wireless environmental sensors deployed for multi-year field operation. IC Role / Device Role / Timing Role: Low-power voltage monitor providing deterministic reset behavior while drawing only 20µA from the main battery. Use Value: Eliminates external pull-ups and discrete components, reducing BOM count and PCB area while extending operational lifetime. |
| Medical Diagnostic Handhelds | Automotive Body Control Modules |
Use Scenario: Ensuring safe boot sequence in portable ultrasound devices with separate 5V analog front-end, 3.3V digital bus, and 1.2V FPGA core. IC Role / Device Role / Timing Role: Triple-supply supervisor validating all critical rails before releasing reset to the host processor and peripheral ICs. Use Value: Meets IEC 62304 safety requirements by preventing undefined states during power transients or battery sag. | Use Scenario: Monitoring 12V-derived 5V system rail, 3.3V CAN transceiver supply, and 1.5V microcontroller core in body electronics modules exposed to automotive load-dump conditions. IC Role / Device Role / Timing Role: Robust voltage supervisor asserting reset within 20µs of threshold violation and maintaining it until both supplies recover. Use Value: Provides immunity to short-duration transients (<100ns) while responding reliably to sustained undervoltage faults. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triple-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6356TUT | VCC2 threshold = 1.58V (vs. 1.67V); otherwise identical pinout, RSTIN function, and timing specs | Suitable where tighter margin on 1.5V rail supervision is required; may assert reset earlier during slow VCC2 ramp | Select MAX6356TUT when system requires lower VCC2 trip point; verify timing margins against actual 1.5V rail behavior |
| TPS3808G33DBVR | Single-supply supervisor (3.3V only); no RSTIN or VCC2 monitoring; 350ms reset timeout vs. 100ms min | Lacks triple-voltage capability; requires additional ICs to replicate MAX6356TWUT's functionality | Use only if system has only one monitored rail and can accommodate longer reset pulse; not a functional substitute |
Compared with MAX6356TUT, the MAX6356TWUT offers higher VCC2 threshold tolerance for 1.67V rails, while TPS3808G33DBVR lacks dual/third-supply monitoring entirely-making MAX6356TWUT uniquely suited for compact multivoltage supervision without component stacking.
Availability
MAX6356TWUT is available at Aetrix Electronics and suitable for industrial PLCs, battery-powered IoT sensors, medical handheld diagnostics, automotive body control modules, and multivoltage embedded systems requiring stable component supply across extended temperature ranges.
Supply support for MAX6356TWUT 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 industrial, automotive, communications, and computing applications.
The MAX6351–MAX6360 family was engineered specifically for multivoltage microprocessor supervision in space-constrained, reliability-critical systems-emphasizing low quiescent current, guaranteed reset validity at low VCC, and flexible third-voltage monitoring.
FAQ
What is the exact VCC1 and VCC2 threshold voltage for MAX6356TWUT?
The MAX6356TWUT has a VCC1 threshold of 3.08V (±0.08V over –40°C to +85°C) and a VCC2 threshold of 1.67V (±0.05V over the same range). These values are factory-trimmed and specified in the Electrical Characteristics table of the MAX6356TWUT datasheet. The "TW" suffix directly encodes these thresholds per Maxim's ordering nomenclature.
Does MAX6356TWUT support monitoring a third voltage, and how is it implemented?
Yes, MAX6356TWUT supports third-voltage monitoring via its RSTIN pin, which features a precise 1.22V internal threshold. To supervise voltages above 1.22V-such as 3.3V or 5V rails-a resistive divider scales the input down to the RSTIN reference level. The MAX6356TWUT datasheet provides the exact formula: VEXT = 1.22V × (R1 + R2)/R2. This function is exclusive to the MAX6355/MAX6356/MAX6357 variants.
What is the reset output type and drive capability of MAX6356TWUT?
The MAX6356TWUT provides an active-low push-pull RST1 output referenced to VCC1. It sinks up to 1.2mA at VCC1 ≥ 2.7V (VOL ≤ 0.3V) and sources 350µA at VCC1 > VTH1(MAX) (VOH ≥ 0.8 × VCC1). This eliminates the need for external pull-up resistors and ensures clean, fast edges compatible with modern microcontroller reset inputs.
Is MAX6356TWUT compatible with systems where supply voltages drop below 1.0V?
No-MAX6356TWUT guarantees valid reset operation only while at least one supply (VCC1 or VCC2) remains ≥ 1.0V. Below 1.0V, the internal circuitry cannot maintain defined logic states. For applications requiring reset assertion down to 0V, Maxim recommends external circuitry (e.g., Figure 4 in the MAX6356TWUT datasheet), though that configuration is incompatible with push-pull outputs like those on MAX6356TWUT.
What package and RoHS status does MAX6356TWUT use?
MAX6356TWUT is supplied in a 6-pin SOT23 package (package code U6-1, outline 21-0058) with lead(Pb)-free construction. The "-T" suffix denotes tape-and-reel packaging; RoHS compliance is indicated by the "+T" variant (MAX6356TWUT+T), while standard MAX6356TWUT meets JEDEC J-STD-020 moisture sensitivity level 1 and is rated for reflow soldering per IPC/JEDEC J-STD-020.
MAX6356TWUT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 3
- Voltage - Threshold:
- 1.67V, 3.08V, 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-23-6
MAX6356TWUT FAQ
1.How can I place an order for MAX6356TWUT through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6356TWUT 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 MAX6356TWUT reliable?
The price and inventory of MAX6356TWUT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6356TWUT is usually 5 days.
3.What payment methods are accepted for MAX6356TWUT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6356TWUT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6356TWUT?
MAX6356TWUT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6356TWUT 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 MAX6356TWUT?
For technical support, including MAX6356TWUT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6356TWUT requirements.
6.How does Aetrix verify that MAX6356TWUT is sourced from the original manufacturer or authorized distributors?
All MAX6356TWUT 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 MAX6356TWUT meets industry standards.
7.What is the process for return or replacement of MAX6356TWUT?
All MAX6356TWUT units undergo pre-shipment inspection (PSI). If there is an issue with MAX6356TWUT, 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 MAX6356TWUT part is unused and in its original packaging.
Return procedure for MAX6356TWUT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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