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Analog Devices Inc./Maxim Integrated MAX6353LSUK
- Part No.:
- MAX6353LSUK
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6353LSUK.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:852
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Product details
Overview
The MAX6353LSUK from Maxim Integrated is a dual-voltage microprocessor supervisory circuit with active-low push-pull reset output referenced to VCC1, factory-set VCC1 threshold of 4.63V and VCC2 threshold of 2.93V, 100ms minimum reset timeout, 20µA supply current, and operation over –40°C to +85°C - used in multivoltage embedded systems to ensure reliable power-on and brownout reset sequencing.
For engineers reviewing the MAX6353LSUK datasheet, MAX6353LSUK pinout, MAX6353LSUK application, or MAX6353LSUK equivalent, this page delivers verified functional identity, precise voltage thresholds, reset timing behavior, manual-reset debounce characteristics, and validated alternative options for dual-supply monitoring in industrial and portable electronics.
Technical Context
The MAX6353LSUK monitors two independent supply rails (VCC1 and VCC2) and asserts its single active-low push-pull RST output when either falls below its respective factory-trimmed threshold (4.63V for VCC1, 2.93V for VCC2). Reset remains valid as long as at least one supply stays ≥1.0V, enabling robust operation during asymmetric rail collapse.
It features a debounced TTL/CMOS-compatible manual-reset input (MR), guarantees 100ms–280ms reset pulse width after power-up or MR release, and supports full temperature-range operation (–40°C to +85°C) without external components - eliminating need for discrete resistor-divider networks or RC timing elements in dual-rail supervision.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 4.63V ±0.09V (min/max over temp); ensures reliable detection of +5V rail brownout before system instability |
| VCC2 Threshold | 2.93V ±0.08V (min/max over temp); precisely monitors +3.3V or +3.0V auxiliary rail |
| Reset Timeout | 100–280ms; guarantees sufficient hold time for CPU initialization and peripheral settling |
| Supply Current | 20µA typical; enables battery-backed operation in portable equipment with multi-year shelf life |
| Operating Temp | –40°C to +85°C; fully specified across industrial temperature range without derating |
| Reset Output Type | Active-low push-pull referenced to VCC1; drives logic-level reset directly into µP without pull-up resistor |
| MR Input Compatibility | TTL/CMOS-debounced; accepts standard logic-level manual reset signals with <1µs glitch rejection |
Pinout & Package
The MAX6353LSUK is housed in a 5-pin SOT23 package (U5-1 outline), footprint-compatible with industry-standard 5-lead SOT-23 layouts and suitable for high-density PCB designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Active-low push-pull reset output referenced to VCC1; sinks 1.2mA @ 2.7V, drives low without external pull-up |
| 2 | GND | Ground reference for all internal comparators and logic; must be connected to system ground plane |
| 3 | MR | Debounced manual-reset input; pulling low forces immediate reset assertion and holds until released + timeout |
| 4 | VCC2 | Secondary supply input and monitor rail; powers internal circuitry when VCC2 > VCC1, and triggers reset if <2.93V |
| 5 | VCC1 | Primary supply input and monitor rail; powers device when VCC1 > VCC2, and triggers reset if <4.63V |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneously tracks VCC1 and VCC2 with separate precision thresholds - eliminates need for two discrete supervisors |
| Factory-trimmed thresholds | 4.63V/2.93V thresholds laser-trimmed at wafer test; no external calibration or resistor selection required |
| Guaranteed RESET validity down to 1V | Reset signal remains asserted and logic-valid even as either VCC1 or VCC2 decays to 1.0V - critical for graceful shutdown |
| Low-power operation | 20µA quiescent current enables integration into always-on subsystems without compromising battery life |
| Power-supply transient immunity | Rejects short negative transients on VCC1/VCC2 (≤100ns at 0.5V overdrive), preventing false resets in noisy environments |
Applications
| Industrial PLC Power Sequencing | Portable Medical Device Supervision |
|---|---|
Use Scenario: Monitoring +5V main logic rail and +3.3V I/O rail in programmable logic controller backplane during cold start and brownout events. IC Role / Device Role / Timing Role: Dual-threshold supervisor asserting synchronized reset to ARM Cortex-M7 MCU and FPGA configuration logic. Use Value: Prevents partial initialization by guaranteeing 100ms+ reset pulse while both rails stabilize - avoids firmware lockup or configuration corruption. | Use Scenario: Ensuring safe boot and fault recovery in handheld ultrasound probe with battery-backed +3.3V analog front-end and +1.8V digital core. IC Role / Device Role / Timing Role: Primary reset generator tied to main battery rail (VCC1) and regulated analog supply (VCC2), interfacing directly to low-voltage µP reset pin. Use Value: 20µA supply current extends battery runtime; guaranteed reset validity down to 1.0V allows controlled shutdown before deep discharge damage. |
| Automotive Body Control Module | Network Router Power Management |
Use Scenario: Supervising +5V microcontroller supply and +3.3V CAN transceiver rail in under-hood body control unit exposed to wide thermal cycling. IC Role / Device Role / Timing Role: Industrial-grade dual-supply monitor providing reset assertion on either rail collapse, with manual reset for service mode entry. Use Value: –40°C to +85°C full-spec operation ensures reliability across automotive ambient extremes; no external components reduce BOM count and failure points. | Use Scenario: Coordinating power-up sequence between +12V PoE interface and +3.3V switch fabric ASIC in enterprise-grade Ethernet router. IC Role / Device Role / Timing Role: Voltage supervisor ensuring ASIC reset remains asserted until both primary and auxiliary supplies reach regulation. Use Value: Push-pull RST output drives reset net directly - eliminates pull-up resistor and associated leakage path in high-reliability network infrastructure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6352LSUK | Same thresholds (4.63V/2.93V) but open-drain RST output requiring external pull-up | Limited to systems where µP reset pin tolerates open-drain drive or where board layout permits pull-up resistor | Select only if existing design uses open-drain reset topology or requires level-shifting flexibility |
| TPS3808G33DBVR | Single-supply supervisor (3.3V threshold only); no VCC2 monitoring capability | Suitable only for single-rail systems; lacks dual-threshold functionality and VCC2 fault detection | Choose only when monitoring only one supply rail and lower cost is prioritized over dual-rail coverage |
Compared with MAX6352LSUK, the MAX6353LSUK provides direct push-pull drive eliminating external components; versus TPS3808G33DBVR, it adds essential dual-rail supervision for multivoltage SoC platforms - making it the only option that satisfies both precision dual-threshold detection and integrated reset drive in compact SOT23-5.
Availability
MAX6353LSUK is available at Aetrix Electronics and suitable for industrial PLC power sequencing, portable medical device supervision, automotive body control modules, network router power management, and multivoltage embedded systems requiring stable component supply and long-term lifecycle support.
Supply support for MAX6353LSUK 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, communications, and computing applications, with emphasis on high-reliability power management and interface solutions.
The MAX6351–MAX6360 family was engineered specifically for multivoltage microprocessor systems requiring simultaneous, independent monitoring of two or three supply rails - delivering factory-trimmed accuracy, ultra-low power, and guaranteed operation across extended temperature ranges.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6353LSUK?
The MAX6353LSUK has a factory-set VCC1 threshold of 4.63V (±0.09V over –40°C to +85°C) and a VCC2 threshold of 2.93V (±0.08V over temperature). These values are laser-trimmed during production and documented in the Electrical Characteristics table of the MAX6353LSUK datasheet - no external resistors or calibration are needed to achieve this precision.
Does the MAX6353LSUK provide watchdog timer functionality?
No, the MAX6353LSUK does not include a watchdog timer. Watchdog capability is exclusive to the MAX6358/MAX6359/MAX6360 variants in the same family. The MAX6353LSUK offers only dual-voltage monitoring, manual reset input, and a single active-low push-pull reset output referenced to VCC1.
Can the MAX6353LSUK operate with VCC1 = 3.3V and VCC2 = 1.8V?
No - the MAX6353LSUK's fixed thresholds (4.63V/2.93V) are incompatible with 3.3V or 1.8V rails. Its VCC1 threshold is designed for +5V systems, and VCC2 threshold targets +3.0V/+3.3V auxiliary supplies. For lower-voltage monitoring, select a different suffix (e.g., MAX6353UWUK for 2.78V/1.67V) or alternate family members like the MAX6326 series.
What is the minimum valid supply voltage for the MAX6353LSUK to assert a correct reset state?
The MAX6353LSUK guarantees correct reset output behavior as long as either VCC1 ≥ 1.0V or VCC2 ≥ 1.0V. This "reset valid down to 1V" feature ensures deterministic reset assertion during power-down sequences - even when one rail collapses faster than the other, which is critical for orderly system shutdown.
Is the MAX6353LSUK pin-compatible with other devices in the MAX6351–MAX6360 family?
The MAX6353LSUK shares the same 5-pin SOT23 package and pinout (RST, GND, MR, VCC2, VCC1) with MAX6352LSUK and MAX6354LSUK, but differs functionally: MAX6352LSUK has open-drain RST, while MAX6354LSUK references RST to VCC2. Pin compatibility does not imply functional interchangeability - verify reset output reference and threshold values before substitution.
MAX6353LSUK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 2.93V, 4.63V
- 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-23-5
MAX6353LSUK FAQ
1.How can I place an order for MAX6353LSUK through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6353LSUK 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 MAX6353LSUK reliable?
The price and inventory of MAX6353LSUK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6353LSUK is usually 5 days.
3.What payment methods are accepted for MAX6353LSUK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6353LSUK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6353LSUK?
MAX6353LSUK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6353LSUK 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 MAX6353LSUK?
For technical support, including MAX6353LSUK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6353LSUK requirements.
6.How does Aetrix verify that MAX6353LSUK is sourced from the original manufacturer or authorized distributors?
All MAX6353LSUK 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 MAX6353LSUK meets industry standards.
7.What is the process for return or replacement of MAX6353LSUK?
All MAX6353LSUK units undergo pre-shipment inspection (PSI). If there is an issue with MAX6353LSUK, 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 MAX6353LSUK part is unused and in its original packaging.
Return procedure for MAX6353LSUK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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