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Analog Devices Inc./Maxim Integrated MAX6355LSUT+T
- Part No.:
- MAX6355LSUT+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6355LSUT+T.pdf
- Description:
- IC SUPERVISOR 3 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:3,610
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Product details
Overview
MAX6355LSUT+T from Maxim Integrated is a triple-voltage microprocessor supervisory circuit with open-drain active-low reset output, 4.63V VCC1 threshold, 2.93V VCC2 threshold, and adjustable RSTIN input (1.22V nominal) for monitoring a third supply-designed for multivoltage embedded systems requiring guaranteed reset validity down to VCC1 = 1V or VCC2 = 1V.
For engineers reviewing the MAX6355LSUT+T datasheet, MAX6355LSUT+T pinout, MAX6355LSUT+T application, or MAX6355LSUT+T equivalent, key selection factors include its dual-supply monitoring capability, 20µA quiescent current, 100ms min reset pulse width, and SOT23-6 lead-free package compatibility with industrial temperature range (-40°C to +85°C).
Technical Context
The MAX6355LSUT+T monitors three voltage rails: VCC1 (4.63V threshold), VCC2 (2.93V threshold), and an external rail via RSTIN (1.22V comparator input). Reset assertion occurs if any monitored voltage falls below its trip point, and the open-drain RST output remains valid as long as either VCC1 ≥ 1.0V or VCC2 ≥ 1.0V.
It features a debounced TTL/CMOS-compatible manual-reset input (MR), supports no external components in dual-rail systems, and provides power-supply transient immunity with 20ppm/°C reset threshold tempco and 100ms–280ms reset timeout period across temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 4.63V ±0.09V at +25°C; ensures reliable reset assertion when primary 4.63V rail drops below specification |
| VCC2 Threshold | 2.93V ±0.05V at +25°C; enables precise supervision of secondary 2.93V supply in dual-rail systems |
| RSTIN Threshold | 1.22V ±0.03V at +25°C; allows accurate monitoring of third voltage using external resistive divider |
| Supply Current | 20µA typical at VCC1=5.5V/VCC2=3.6V; minimizes system power budget impact in battery-powered applications |
| Reset Timeout | 100–280ms; guarantees sufficient processor initialization time before release from reset state |
| Operating Temp | -40°C to +85°C; qualified for industrial-grade embedded control and instrumentation environments |
| Package | SOT23-6; surface-mount footprint compatible with high-density PCB layouts and automated assembly |
Pinout & Package
MAX6355LSUT+T is housed in a RoHS-compliant, lead-free 6-pin SOT23 package (U6-1 outline, land pattern 90-0175), with 1.0mm pitch, 2.9mm × 1.6mm body size, and thermal pad not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RST | Active-low open-drain reset output | Drives low during fault; requires external pull-up for logic-high level; referenced to system ground |
| 2 - GND | Ground reference | Common return path for all internal circuits and external pull-up networks |
| 3 - MR | Debounced manual-reset input | Pull low to force reset; internally pulled up (~63.5kΩ); glitch rejection <100ns |
| 4 - VCC2 | Secondary supply input & monitor rail | Supplies device when > VCC1; monitored at 2.93V threshold; must be ≤ VCC1 + 0.3V |
| 5 - RSTIN | Adjustable undervoltage-comparator input | Monitors third rail via 1.22V internal reference; VRSTIN ≤ VCC1; supports external resistor divider |
| 6 - VCC1 | Primary supply input & monitor rail | Supplies device when > VCC2; monitored at 4.63V threshold; must be ≤ 5.5V |
Key Features
| Feature | Design Value |
|---|---|
| Triple-voltage supervision | Simultaneously monitors VCC1 (4.63V), VCC2 (2.93V), and third rail via RSTIN (1.22V), eliminating need for discrete supervisors in multirail systems |
| Open-drain RST with guaranteed validity | RST remains functional down to VCC1 = 1.0V or VCC2 = 1.0V, enabling robust reset signaling even during deep brownout conditions |
| Factory-trimmed precision thresholds | VCC1/VCC2 thresholds accurate to ±2% over temperature, reducing calibration overhead in production test |
| Low-power operation | 20µA typical supply current enables use in always-on subsystems without compromising battery life |
| Transient-immune design | Rejects VCC transients <100µs (at 0.5V overdrive), preventing false resets in noisy power environments |
Applications
| Industrial PLC Controllers | Medical Diagnostic Handhelds |
|---|---|
Use Scenario: Supervising dual-core MCU with separate 4.63V I/O and 2.93V core supplies while monitoring analog sensor bias rail. IC Role / Device Role / Timing Role: Triple-rail supervisor asserting open-drain RST to hold both cores in reset until all three rails stabilize. Use Value: Prevents partial initialization and firmware corruption by ensuring coordinated release only after full power sequencing compliance. | Use Scenario: Power management in portable ultrasound device with 4.63V display driver, 2.93V ADC, and 1.8V FPGA supply. IC Role / Device Role / Timing Role: RSTIN monitors FPGA rail via 1.22V comparator; RST forces system-wide reset on any rail failure. Use Value: Enables single-chip supervision of three critical rails, reducing BOM count and PCB area vs. discrete solutions. |
| Automotive Infotainment Gateways | Smart Energy Meters |
Use Scenario: Monitoring 4.63V CAN transceiver supply, 2.93V microcontroller supply, and 3.3V RF module supply in ECU. IC Role / Device Role / Timing Role: Acts as centralized reset arbiter; MR input tied to ignition signal for cold-start reset initiation. Use Value: Guarantees deterministic boot sequence across heterogeneous subsystems despite varying rail ramp rates. | Use Scenario: Supervising 4.63V metering SoC, 2.93V RTC backup, and 1.2V precision reference in utility-grade electricity meter. IC Role / Device Role / Timing Role: RSTIN configured for 1.2V rail monitoring; open-drain RST drives isolated reset tree via optocoupler. Use Value: Maintains reset integrity during AC line dropout events where VCC1/VCC2 may dip to 1.0V but remain above shutdown threshold. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triple-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6356LSUT+T | Push-pull RST output referenced to VCC1 (not open-drain); identical thresholds and RSTIN specs | Requires no external pull-up; incompatible with wired-OR reset buses or level-shifting interfaces | Select when driving single-load MCU reset pin directly and minimizing external components |
| TPS3808G33DBVR | Dual-voltage supervisor only (no RSTIN); 3.3V fixed VDD threshold, 2.93V adjustable threshold via resistor; no third-rail monitoring | Lacks RSTIN functionality; cannot replace MAX6355LSUT+T in designs requiring three-rail supervision | Consider only if third-rail monitoring is unnecessary and board space permits adding discrete comparator solution |
Compared with MAX6356LSUT+T, the MAX6355LSUT+T offers open-drain flexibility for shared reset buses but requires a pull-up resistor; versus TPS3808G33DBVR, it uniquely supports true triple-rail supervision without external components, making it essential for compact multivoltage systems where RSTIN functionality is required.
Availability
MAX6355LSUT+T is available at Aetrix Electronics and suitable for industrial PLC controllers, medical handheld diagnostics, automotive gateways, and smart energy meters requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MAX6355LSUT+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 markets.
The MAX6351–MAX6360 family was designed to replace discrete reset solutions in multivoltage embedded systems, delivering precision dual- or triple-rail supervision with minimal external components and guaranteed operation over -40°C to +85°C.
FAQ
What is the function of the RSTIN pin on the MAX6355LSUT+T?
The RSTIN pin on the MAX6355LSUT+T is an adjustable undervoltage-comparator input with a nominal 1.22V threshold, enabling monitoring of a third voltage rail via an external resistive divider. It is powered from VCC1 and must remain ≤ VCC1; when the voltage at RSTIN falls below threshold, the open-drain RST output is asserted. This feature makes MAX6355LSUT+T uniquely capable of triple-rail supervision without additional ICs.
Does the MAX6355LSUT+T provide watchdog timer functionality?
No, the MAX6355LSUT+T does not include a watchdog timer. Watchdog functionality is exclusive to the MAX6358/MAX6359/MAX6360 variants in the same family. The MAX6355LSUT+T is specifically configured for triple-voltage supervision with RSTIN input and open-drain reset output, omitting WDI pin and associated timing circuitry-confirmed by pin configuration diagrams and selector guide.
What are the absolute maximum ratings for VCC1 and VCC2 on the MAX6355LSUT+T?
The absolute maximum rating for both VCC1 and VCC2 on the MAX6355LSUT+T is -0.3V to +6V relative to GND. However, the recommended operating range is +1.2V to +5.5V over the full -40°C to +85°C temperature range. Operation below 1.2V is permitted only for brief periods during power-down sequences, as the reset output is guaranteed valid down to VCC1 = 1.0V or VCC2 = 1.0V per electrical specifications.
Can the MAX6355LSUT+T be used in battery-powered equipment?
Yes, the MAX6355LSUT+T is well-suited for battery-powered equipment due to its 20µA typical supply current, wide input voltage range (1.2V–5.5V), and ability to maintain valid reset output down to VCC1 = 1.0V or VCC2 = 1.0V. Its low quiescent current extends battery life in portable medical devices, handheld instruments, and remote sensors where continuous supervision is required.
Is the MAX6355LSUT+T pin-compatible with other devices in the MAX6351–MAX6360 family?
The MAX6355LSUT+T shares the same 6-pin SOT23 package and pinout as MAX6356/MAX6357/MAX6358/MAX6359/MAX6360, but differs functionally at Pin 1 (RST, open-drain) and Pin 5 (RSTIN). While physically interchangeable, substituting with MAX6356LSUT+T (push-pull RST) or MAX6358LSUT+T (WDI instead of RSTIN) will cause functional mismatch unless circuitry is modified to match the alternate pin functions.
MAX6355LSUT+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 3
- Voltage - Threshold:
- 2.93V, 4.63V, Adj
- Output:
- Open Drain or Open Collector
- 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
MAX6355LSUT+T FAQ
1.How can I place an order for MAX6355LSUT+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6355LSUT+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 MAX6355LSUT+T reliable?
The price and inventory of MAX6355LSUT+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6355LSUT+T is usually 5 days.
3.What payment methods are accepted for MAX6355LSUT+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6355LSUT+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6355LSUT+T?
MAX6355LSUT+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6355LSUT+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 MAX6355LSUT+T?
For technical support, including MAX6355LSUT+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6355LSUT+T requirements.
6.How does Aetrix verify that MAX6355LSUT+T is sourced from the original manufacturer or authorized distributors?
All MAX6355LSUT+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 MAX6355LSUT+T meets industry standards.
7.What is the process for return or replacement of MAX6355LSUT+T?
All MAX6355LSUT+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6355LSUT+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 MAX6355LSUT+T part is unused and in its original packaging.
Return procedure for MAX6355LSUT+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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