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Analog Devices Inc./Maxim Integrated MAX6353MSUK+T
- Part No.:
- MAX6353MSUK+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6353MSUK+T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,437
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Product details
Overview
MAX6353MSUK+T from Maxim Integrated is a dual-voltage microprocessor supervisory circuit with active-low push-pull reset output referenced to VCC1, precision factory-set thresholds of 4.38V (VCC1) and 2.93V (VCC2), 20µA supply current, and guaranteed operation from -40°C to +85°C. It monitors two independent power rails in multivoltage systems and asserts reset if either supply drops below its threshold.
For engineers reviewing the MAX6353MSUK+T datasheet, MAX6353MSUK+T pinout, MAX6353MSUK+T application, or MAX6353MSUK+T equivalent, key selection criteria include dual-supply monitoring capability, VCC1-referenced reset output, SOT23-5 package compatibility, and support for manual reset with debounced TTL/CMOS input.
Technical Context
The MAX6353MSUK+T implements dual independent voltage comparators with hysteresis, each tied to a dedicated supply rail (VCC1 and VCC2). Its reset generator guarantees valid output as long as either VCC1 ≥ 1.0V or VCC2 ≥ 1.0V, enabling robust brownout detection during asymmetric power sequencing.
It features a debounced manual-reset input (MR) with 1µs minimum pulse width and glitch rejection of 100ns, and supports system-level reliability via precise reset timeout (100–280ms) and power-supply transient immunity up to 250µs at 100mV overdrive.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 4.38V ±0.13V (min/max over -40°C to +85°C); ensures reliable reset assertion when primary 4.5V rail sags below safe operating level |
| VCC2 Threshold | 2.93V ±0.08V (min/max over -40°C to +85°C); enables accurate monitoring of secondary 3.0V or 3.3V domain |
| Supply Current | 20µA typical (VCC1=5.5V, VCC2=3.6V); minimizes quiescent load on battery-backed or low-power systems |
| Reset Timeout | 100–280ms; provides sufficient hold time for microprocessor initialization across temperature and process variation |
| Reset Output Type | Active-low push-pull referenced to VCC1; eliminates need for external pull-up and ensures defined logic level under all valid VCC1 conditions |
| Operating Temp | -40°C to +85°C; qualified for industrial and extended-temperature embedded applications without derating |
| Package | 5-pin SOT23; surface-mount footprint compatible with high-density PCB layouts and automated assembly |
Pinout & Package
MAX6353MSUK+T is housed in a 5-pin SOT23 package with gull-wing leads, RoHS-compliant lead(Pb)-free finish (+T suffix), and thermal pad omitted. The package measures 2.9mm × 1.6mm × 1.1mm (L × W × H) and supports reflow soldering per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RST | Active-low reset output | Push-pull driver referenced to VCC1; sinks 1.2mA at ≤0.3V when VCC1 ≥ 2.7V; valid down to VCC1 = 1.0V |
| 2 - GND | Ground reference | Common return path for internal comparators, reset generator, and MR input; must be low-impedance |
| 3 - MR | Manual-reset input | Debounced TTL/CMOS-compatible input; pulling low forces reset; internally pulled up ~63.5kΩ to VCC1 |
| 4 - VCC2 | Secondary supply input | Powers internal circuitry when VCC2 > VCC1; monitored against 2.93V threshold; must remain ≤ VCC1 |
| 5 - VCC1 | Primary supply input | Powers internal circuitry when VCC1 > VCC2; monitored against 4.38V threshold; defines RST output reference |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneously tracks VCC1 (4.38V) and VCC2 (2.93V) with separate comparators and hysteresis, eliminating need for discrete supervisors |
| VCC1-referenced push-pull reset | Ensures clean, rail-to-rail reset signal without external components-critical for interfacing with 3.3V/5V μPs requiring defined low-state voltage |
| Guaranteed reset validity to 1.0V | RESET remains asserted and electrically valid even as VCC1 decays to 1.0V, supporting graceful shutdown in brownout scenarios |
| Debounced manual reset input | Internal filtering rejects <100ns glitches and requires only 1µs pulse width, simplifying front-panel or test-point reset implementation |
| Low 20µA quiescent current | Enables use in always-on subsystems (e.g., RTC backup, wake-on-event circuits) without compromising battery life |
Applications
| Industrial PLC Controllers | Portable Medical Devices |
|---|---|
|
Use Scenario: Monitoring dual 5V/3.3V rails powering FPGA configuration, ADC interface, and wireless transceiver in a handheld diagnostic instrument. IC Role / Device Role / Timing Role: Dual-supply supervisor asserting synchronized reset to all domains upon any rail sag, ensuring deterministic boot state. Use Value: Prevents partial initialization and metastability by guaranteeing both supplies meet threshold before release-enabled by 4.38V/2.93V matched thresholds and 100ms+ reset pulse. |
Use Scenario: Power sequencing and fault detection in a battery-powered ECG monitor with separate analog front-end (2.5V), digital core (3.3V), and display backlight (5V) supplies. IC Role / Device Role / Timing Role: Supervises primary (5V) and secondary (3.3V) rails; asserts reset if either falls below specification during battery discharge or load transients. Use Value: 20µA supply current extends runtime between charges; VCC1-referenced RST ensures clean reset signaling even as main rail decays toward 1.0V cutoff. |
| Automotive Body Control Modules | Network Edge Routers |
|
Use Scenario: Ensuring reliable startup and brownout recovery in a 12V-to-5V/3.3V converted body control unit exposed to cold-crank and load-dump events. IC Role / Device Role / Timing Role: Monitors post-regulation 5V (VCC1) and 3.3V (VCC2) domains; triggers reset on transient-induced dips below 4.38V or 2.93V. Use Value: Immunity to 250µs transients at 100mV overdrive prevents spurious resets during engine cranking; -40°C to +85°C rating matches under-hood requirements. |
Use Scenario: Supervising redundant 3.3V and 5V supplies feeding CPU, PHY, and management ASIC in a fanless enterprise switch operating 24/7. IC Role / Device Role / Timing Role: Provides fail-safe reset coordination across dual-rail power architecture, with reset held until both rails stabilize above thresholds. Use Value: Push-pull RST eliminates pull-up resistor count and layout area; guaranteed 100–280ms timeout accommodates slow-starting DC/DC converters and FPGA configuration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6353MTUK+T | VCC1 threshold = 3.08V (vs. 4.38V); VCC2 threshold = 3.08V; same SOT23-5 package and pinout | Suitable for systems with matched 3.3V/3.3V dual rails instead of 4.5V/3.0V split-rail configurations | Select when monitoring two identical nominal voltages; verify VCC1/VCC2 sequencing compatibility with target system |
| TPS3808G33DBVR | Single-supply supervisor (3.3V only); open-drain RST; no VCC2 monitoring; 1.8µA IQ; SOT23-5 | Lacks dual-rail capability; requires external components for multi-rail supervision | Choose only for single-rail 3.3V systems where ultra-low IQ is critical and dual monitoring is unnecessary |
Compared with MAX6353MSUK+T, MAX6353MTUK+T offers identical form-factor and timing but targets matched 3.3V rails, while TPS3808G33DBVR reduces current draw by >10× but sacrifices dual-supply functionality-making it unsuitable for true multivoltage system supervision.
Availability
MAX6353MSUK+T is available at Aetrix Electronics and suitable for industrial PLC controllers, portable medical devices, automotive body control modules, and network edge routers requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX6353MSUK+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) designs precision analog, mixed-signal, and power-management ICs for industrial, computing, communications, and consumer applications.
The MAX6351–MAX6360 family delivers dual- and triple-voltage µP supervisors optimized for reliability-critical embedded systems where simultaneous monitoring of multiple rails is essential.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6353MSUK+T?
The MAX6353MSUK+T has a factory-set VCC1 threshold of 4.38V (±0.13V over -40°C to +85°C) and VCC2 threshold of 2.93V (±0.08V over temperature). These values are specified in the Voltage-Threshold Levels table and confirmed in the Electrical Characteristics section of the datasheet, with typical room-temperature values of 4.38V and 2.93V respectively.
Does the MAX6353MSUK+T include a watchdog timer function?
No, the MAX6353MSUK+T does not include a watchdog timer. Watchdog functionality is only present in the MAX6358/MAX6359/MAX6360 variants. The MAX6353MSUK+T belongs to the base series with dual-voltage monitoring, manual reset, and push-pull reset output-but no WDI pin or timeout circuitry.
What is the output type and drive capability of the RST pin on the MAX6353MSUK+T?
The RST pin on the MAX6353MSUK+T is an active-low push-pull output referenced to VCC1. It sinks 1.2mA while maintaining VOL ≤ 0.3V when VCC1 ≥ 2.7V, and sinks 50µA while maintaining VOL ≤ 0.3V down to VCC1 = 1.2V. This eliminates the need for an external pull-up resistor and ensures defined logic levels across the full operating range.
Can the MAX6353MSUK+T operate with VCC1 and VCC2 supplied from different voltage sources?
Yes, the MAX6353MSUK+T is explicitly designed for independent dual-supply monitoring. VCC1 and VCC2 may be derived from separate regulators or power domains-as long as VCC1 remains ≥ VCC2 during normal operation (per functional diagram and Pin Description), and neither exceeds +6V or falls below -0.3V relative to GND.
Is the MAX6353MSUK+T pin-compatible with other members of the MAX6351–MAX6360 family in the same package?
Yes, all 5-pin SOT23 variants-including MAX6352, MAX6353, and MAX6354-share identical pinout: Pin 1 = RST, Pin 2 = GND, Pin 3 = MR, Pin 4 = VCC2, Pin 5 = VCC1. However, RST functionality differs: MAX6352 uses open-drain, while MAX6353 (including MAX6353MSUK+T) uses VCC1-referenced push-pull-requiring verification of downstream logic compatibility.
MAX6353MSUK+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 2.93V, 4.38V
- 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
MAX6353MSUK+T FAQ
1.How can I place an order for MAX6353MSUK+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6353MSUK+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 MAX6353MSUK+T reliable?
The price and inventory of MAX6353MSUK+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6353MSUK+T is usually 5 days.
3.What payment methods are accepted for MAX6353MSUK+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6353MSUK+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6353MSUK+T?
MAX6353MSUK+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6353MSUK+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 MAX6353MSUK+T?
For technical support, including MAX6353MSUK+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6353MSUK+T requirements.
6.How does Aetrix verify that MAX6353MSUK+T is sourced from the original manufacturer or authorized distributors?
All MAX6353MSUK+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 MAX6353MSUK+T meets industry standards.
7.What is the process for return or replacement of MAX6353MSUK+T?
All MAX6353MSUK+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6353MSUK+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 MAX6353MSUK+T part is unused and in its original packaging.
Return procedure for MAX6353MSUK+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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