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Analog Devices Inc./Maxim Integrated MAX6353SZUK-T
- Part No.:
- MAX6353SZUK-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6353SZUK-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX6353SZUK-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 2.93V (VCC1) and 2.32V (VCC2), 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 MAX6353SZUK-T datasheet, MAX6353SZUK-T pinout, MAX6353SZUK-T application, or MAX6353SZUK-T equivalent, key selection criteria include dual-supply threshold accuracy, guaranteed RESET validity down to VCC1 = 1.0V or VCC2 = 1.0V, manual-reset debouncing, and compatibility with 5-pin SOT23 PCB layouts.
Technical Context
The MAX6353SZUK-T 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 (2.93V/2.32V). Reset assertion is guaranteed as long as at least one supply remains ≥1.0V, enabling robust low-voltage operation during brownout conditions.
It features a debounced TTL/CMOS-compatible manual-reset input (MR), no watchdog or third-voltage monitoring capability (distinguishing it from MAX6359/MAX6356), and operates with 100ms minimum reset pulse width and 20ppm/°C threshold tempco for stable performance across temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 2.93V ±0.05V at +25°C; ensures precise 2.93V supply monitoring with ±0.08V tolerance over –40°C to +85°C |
| VCC2 Threshold | 2.32V ±0.03V at +25°C; enables accurate tracking of secondary 2.32V rail without external components |
| Supply Current | 20µA typical; minimizes quiescent load on battery- or energy-constrained systems |
| Reset Pulse Width | 100ms minimum; guarantees sufficient duration for μP initialization and state recovery |
| Operating Temp | –40°C to +85°C; qualified for industrial-grade embedded applications without derating |
| Reset Output Type | Active-low push-pull referenced to VCC1; eliminates need for external pull-up and drives directly into μP reset pin |
| Reset Validity | Guaranteed while VCC1 ≥ 1.0V or VCC2 ≥ 1.0V; supports deep brownout detection before full supply collapse |
Pinout & Package
MAX6353SZUK-T is housed in a 5-pin SOT23 package (U5-1 outline), with 1.6mm × 2.9mm footprint and 0.95mm height - compatible with standard high-density PCB assembly processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RST | Active-low reset output | Push-pull CMOS output referenced to VCC1; sinks 1.2mA at ≤0.3V, sources 800µA at VCC1 − 1.5V |
| 2 - GND | Ground reference | Common return path for internal comparators, MR input, and reset driver; must be low-impedance |
| 3 - MR | Manual-reset input | Debounced active-low input; forces reset while pulled low and holds for timeout after release |
| 4 - VCC2 | Secondary supply input | Powers device when > VCC1 and monitored at 2.32V threshold; voltage range 1.2V–5.5V |
| 5 - VCC1 | Primary supply input | Powers device when > VCC2 and monitored at 2.93V threshold; also supplies RST output stage |
Key Features
| Feature | Design Value |
|---|---|
| Dual-voltage precision monitoring | Factory-trimmed 2.93V/2.32V thresholds with <±0.08V total error over temperature - eliminates calibration overhead |
| Low-power supervision | 20µA supply current enables use in always-on subsystems without compromising battery life |
| Robust reset timing | 100ms min power-on reset pulse width ensures μP core and peripherals fully stabilize before release |
| Brownout resilience | RESET remains valid down to VCC1 = 1.0V or VCC2 = 1.0V - detects pre-failure supply sag not caught by higher-threshold supervisors |
| No external components | Self-contained dual-rail monitoring in 5-pin SOT23 - reduces BOM count and layout area vs. discrete resistor-divider solutions |
Applications
| Industrial PLC Controllers | Portable Medical Monitors |
|---|---|
Use Scenario: Real-time control logic in programmable logic controllers where dual 3.3V/2.5V rails power CPU and I/O modules. IC Role / Device Role / Timing Role: Supervises both rails simultaneously and asserts synchronized reset to prevent firmware corruption during asymmetric brownout. Use Value: Prevents spurious reboots caused by transient dips on only one rail - improves system uptime and deterministic behavior. | Use Scenario: Battery-powered ECG or glucose meters requiring reliable startup and fault detection under variable load conditions. IC Role / Device Role / Timing Role: Monitors main 2.93V LDO output and backup 2.32V sensor rail to guarantee clean reset before analog front-end initialization. Use Value: Enables safe operation down to 1.0V per rail - extends usable battery range and avoids silent data corruption. |
| Multivoltage IoT Edge Nodes | Automotive Body Control Modules |
Use Scenario: Sub-GHz wireless sensor nodes with separate 2.93V MCU and 2.32V RF transceiver supplies. IC Role / Device Role / Timing Role: Generates single unified reset signal tied to VCC1, ensuring coordinated restart of digital and RF subsystems. Use Value: Eliminates race conditions between independently powered domains - critical for secure OTA update integrity. | Use Scenario: Low-power body electronics (e.g., door module) using 2.93V microcontroller and 2.32V CAN transceiver supplies. IC Role / Device Role / Timing Role: Provides fail-safe reset coordination during cold-crank (battery dip to ~6V) and load-dump events. Use Value: Guarantees reset assertion even if one rail collapses first - prevents CAN bus lockup or memory corruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6353LTUK-T | VCC1 threshold = 4.63V, VCC2 = 3.08V; otherwise identical pinout, timing, and features | Suitable for 5V/3.3V systems instead of 3.0V/2.3V; requires different rail voltage assignment | Select based on actual supply voltages - same layout, no redesign needed |
| TPS3808G33DBVR | Single-supply supervisor (3.3V only); no VCC2 monitoring; 350ms reset timeout; SOT23-5 package | Lacks dual-rail capability - requires separate supervisor or resistor divider for second rail | Only viable if second rail monitoring is unnecessary or handled externally |
Compared with MAX6353SZUK-T, MAX6353LTUK-T offers identical functionality at higher thresholds for legacy 5V/3.3V systems, while TPS3808G33DBVR provides lower-cost single-rail supervision but cannot replace dual-voltage monitoring without system-level redesign.
Availability
MAX6353SZUK-T is available at Aetrix Electronics and suitable for industrial PLC controllers, portable medical monitors, multivoltage IoT edge nodes, automotive body control modules, and intelligent instrumentation requiring stable component supply across extended temperature ranges.
Supply support for MAX6353SZUK-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 and mixed-signal ICs for industrial, communications, and computing applications - emphasizing reliability, low power, and integration.
The MAX6351–MAX6360 family delivers dual- and triple-voltage supervision with factory-trimmed thresholds and minimal external components - targeting space-constrained, multirail embedded systems needing deterministic reset behavior.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6353SZUK-T?
The MAX6353SZUK-T has a factory-set VCC1 threshold of 2.93V (±0.05V at +25°C, ±0.08V over –40°C to +85°C) and VCC2 threshold of 2.32V (±0.03V at +25°C, ±0.05V over temperature). These values are defined by the "SZ" suffix per Maxim's Voltage Threshold Levels table and are laser-trimmed for precision without external calibration.
Does the MAX6353SZUK-T include a watchdog timer or third-voltage monitor?
No, the MAX6353SZUK-T does not include a watchdog timer or third-voltage monitor. It is a dual-supply supervisor only - unlike MAX6359 (watchdog + VCC1-referenced RST) or MAX6356 (third-voltage input RSTIN). The MAX6353SZUK-T provides one active-low push-pull RST output referenced to VCC1 and debounced MR input.
What is the package type and pin count of the MAX6353SZUK-T?
The MAX6353SZUK-T uses a 5-pin SOT23 package (outline U5-1), with pin 1 = RST, pin 2 = GND, pin 3 = MR, pin 4 = VCC2, and pin 5 = VCC1. This matches the MAX6352/MAX6353/MAX6354 variant group and is distinct from the 6-pin SOT23 used by MAX6351/MAX6355–MAX6360.
Can the MAX6353SZUK-T operate with supply voltages below 1.2V?
The MAX6353SZUK-T guarantees operation down to VCC1 = 1.2V or VCC2 = 1.2V over the full –40°C to +85°C range, though the reset output remains valid as low as 1.0V on either supply. Below 1.2V, functionality is not specified - the 1.0V validity limit applies only to maintaining correct RST logic state during brownout, not full device operation.
Is the MAX6353SZUK-T pin-compatible with other devices in the MAX6351–MAX6360 family?
The MAX6353SZUK-T shares the same 5-pin SOT23 pinout with MAX6352 and MAX6354, but differs from all 6-pin variants (e.g., MAX6351, MAX6356). While pin functions align within the 5-pin group, threshold voltages and reset reference (VCC1 vs. VCC2) vary - so direct substitution requires verification of both electrical specs and system rail assignments.
MAX6353SZUK-T 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:
- 2.32V, 2.93V
- 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
MAX6353SZUK-T FAQ
1.How can I place an order for MAX6353SZUK-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6353SZUK-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 MAX6353SZUK-T reliable?
The price and inventory of MAX6353SZUK-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6353SZUK-T is usually 5 days.
3.What payment methods are accepted for MAX6353SZUK-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6353SZUK-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6353SZUK-T?
MAX6353SZUK-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6353SZUK-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 MAX6353SZUK-T?
For technical support, including MAX6353SZUK-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6353SZUK-T requirements.
6.How does Aetrix verify that MAX6353SZUK-T is sourced from the original manufacturer or authorized distributors?
All MAX6353SZUK-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 MAX6353SZUK-T meets industry standards.
7.What is the process for return or replacement of MAX6353SZUK-T?
All MAX6353SZUK-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6353SZUK-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 MAX6353SZUK-T part is unused and in its original packaging.
Return procedure for MAX6353SZUK-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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