My Inquiry
My Account
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 MPU SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,976
Please send an inquiry. Send us your inquiry, and we will respond immediately.
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. It monitors two independent power rails in multivoltage embedded systems and asserts reset if either supply drops below its threshold.
For engineers reviewing the MAX6353SZUK+T datasheet, MAX6353SZUK+T pinout, MAX6353SZUK+T application, or MAX6353SZUK+T equivalent, key selection criteria include dual-supply monitoring capability, guaranteed RESET validity down to VCC1 = 1V or VCC2 = 1V, manual-reset debouncing, and compatibility with 5-pin SOT23 PCB layouts for space-constrained industrial controllers and portable equipment.
Technical Context
The MAX6353SZUK+T implements dual independent voltage comparators with hysteresis, each tied to a dedicated supply rail (VCC1 and VCC2), with reset assertion triggered when either input falls below its factory-trimmed threshold. Its push-pull RST output is referenced solely to VCC1 and guarantees valid logic levels across the full operating voltage range.
It features a debounced TTL/CMOS-compatible manual-reset input (MR) that forces reset while asserted and maintains reset for the timeout period after release. Unlike watchdog-equipped variants (e.g., MAX6359), the MAX6353SZUK+T omits WDI functionality - confirmed by device family mapping and pin configuration data.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 2.93V ±0.05V at +25°C; ensures reliable reset assertion when primary supply dips below nominal 2.93V rail |
| VCC2 Threshold | 2.32V ±0.05V at +25°C; enables precise monitoring of secondary 2.32V domain (e.g., I/O or analog subsystem) |
| Supply Current | 20µA typical; supports ultra-low-power battery-backed applications without compromising supervision integrity |
| Reset Timeout | 100ms minimum pulse width; meets JEDEC JESD78 requirements for processor initialization hold time |
| Operating Temp | –40°C to +85°C; qualified for industrial-grade embedded control and instrumentation environments |
| RESET Validity | Guaranteed down to VCC1 ≥ 1.0V or VCC2 ≥ 1.0V; ensures fail-safe reset signaling during brownout conditions |
| Output Type | Active-low push-pull referenced to VCC1; eliminates need for external pull-up and simplifies interface to 2.93V-domain logic |
Pinout & Package
MAX6353SZUK+T is housed in a 5-pin SOT23 package (package code U5-1), with lead(Pb)-free construction indicated by the "+T" suffix. The compact 2.9mm × 1.6mm footprint supports high-density PCB layouts in portable and space-constrained designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Active-low push-pull reset output referenced to VCC1; drives low to assert reset, high-impedance off-state not applicable |
| 2 | GND | Ground reference for internal comparators, MR input, and RST output; must be connected to system ground plane |
| 3 | MR | Debounced manual-reset input; pulling low forces reset; internally pulled up (~63.5kΩ); must not exceed VCC1 |
| 4 | VCC2 | Secondary supply input and monitor rail; powers internal circuitry when VCC2 > VCC1; monitored against 2.32V threshold |
| 5 | VCC1 | Primary supply input and monitor rail; powers internal circuitry when VCC1 > VCC2; monitored against 2.93V threshold |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneous precision tracking of two distinct supply domains (2.93V and 2.32V) without shared reference or calibration drift |
| Factory-trimmed thresholds | ±0.05V tolerance at +25°C; eliminates need for external resistor networks or post-manufacture calibration |
| Low quiescent current | 20µA typical; extends battery life in always-on supervision circuits for portable medical or sensor devices |
| Valid reset down to 1.0V supply | Ensures deterministic reset behavior during deep brownout, critical for nonvolatile memory write protection |
| Debounced manual reset | Hardware-filtered MR input rejects <100ns glitches; prevents spurious resets from mechanical switch bounce or noise |
Applications
| Industrial PLC Controllers | Portable Medical Monitors |
|---|---|
|
Use Scenario: Supervising dual-rail power architecture (2.93V core, 2.32V I/O) in programmable logic controller CPU modules. IC Role / Device Role / Timing Role: Dual-voltage supervisor asserting active-low reset to ARM Cortex-M7 processor upon undervoltage on either rail. Use Value: Prevents firmware corruption during transient line sags by guaranteeing reset pulse ≥100ms while maintaining validity down to 1.0V on either supply. |
Use Scenario: Power sequencing and fault detection in handheld ECG analyzers powered by single-cell Li-ion with LDO-regulated rails. IC Role / Device Role / Timing Role: Monitoring 2.93V analog front-end and 2.32V digital subsystem to trigger safe shutdown before ADC/DAC malfunction. Use Value: 20µA quiescent current minimizes standby drain; factory-trimmed thresholds eliminate calibration overhead in volume production. |
| Smart Energy Meters | Automotive Body Control Modules |
|
Use Scenario: Ensuring clean boot and runtime supervision of microcontroller and metrology ASIC in ANSI C12.22-compliant meters. IC Role / Device Role / Timing Role: Providing synchronized reset to both MCU and energy measurement IC when main 2.93V rail or auxiliary 2.32V rail fails. Use Value: Push-pull RST referenced to VCC1 eliminates external pull-up, reducing BOM count and layout area in cost-sensitive meter designs. |
Use Scenario: Supervising dual supplies (2.93V MCU core, 2.32V CAN transceiver interface) in under-hood body control units. IC Role / Device Role / Timing Role: Asserting reset to Infineon AURIX TC3xx MCU and TJA1044 CAN FD transceiver during cold-crank voltage dip. Use Value: Guaranteed operation from –40°C to +85°C and reset validity to 1.0V ensure robustness during automotive cranking events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6353SZUK-T | Leaded (Pb-containing) version; identical electrical specs and pinout; RoHS exemption applies | No functional difference; used where Pb-free compliance is not required or legacy qualification mandates leaded finish | Select MAX6353SZUK+T for RoHS-compliant production; choose MAX6353SZUK-T only if leaded solder process or legacy spec requires it |
| TPS3808G33DBVR | Single-supply supervisor (3.3V threshold only); no VCC2 monitoring; 350ms reset timeout; SOT23-5 package | Cannot replace dual-monitoring function; suitable only if system uses single regulated rail or external divider for second rail | Use only when dual-threshold monitoring is unnecessary; MAX6353SZUK+T remains mandatory for true dual-rail independence |
Compared with MAX6353SZUK-T, the +T variant provides identical performance with lead-free termination for modern assembly processes; compared with TPS3808G33DBVR, MAX6353SZUK+T uniquely delivers independent dual-threshold supervision in the same 5-pin footprint, eliminating need for discrete resistor dividers or multiple ICs.
Availability
MAX6353SZUK+T is available at Aetrix Electronics and suitable for industrial PLC controllers, portable medical monitors, smart energy meters, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
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, with emphasis on reliability, low power, and integration.
The MAX6351–MAX6360 product line delivers dual- and triple-voltage microprocessor supervisors optimized for multirail embedded systems where independent, factory-trimmed supply monitoring is essential for system-level fault resilience.
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) and a VCC2 threshold of 2.32V (±0.05V at +25°C), as defined by the "SZ" suffix per the Voltage Threshold Levels table. These values are trimmed during production and guaranteed over –40°C to +85°C.
Does the MAX6353SZUK+T include a watchdog timer function?
No, the MAX6353SZUK+T does not include a watchdog timer. Watchdog functionality is exclusive to MAX6358/MAX6359/MAX6360 variants, as confirmed by the Selector Guide and Pin Description tables. The MAX6353SZUK+T provides only dual-voltage monitoring and manual reset.
What is the output type and drive capability of the RST pin on the MAX6353SZUK+T?
The RST pin on the MAX6353SZUK+T is an active-low push-pull output referenced to VCC1. It sinks 1.2mA at ≤0.3V when VCC1 ≥ 2.7V, and sources current only during high state via VCC1 rail - no external pull-up is required.
Can the MAX6353SZUK+T operate with supply voltages below 2.32V or 2.93V?
Yes - the MAX6353SZUK+T operates with VCC1 and VCC2 as low as 1.2V over temperature (–40°C to +85°C), and its RESET output remains valid as long as either VCC1 ≥ 1.0V or VCC2 ≥ 1.0V, enabling robust brownout response well below its trip thresholds.
Is the MAX6353SZUK+T pin-compatible with other devices in the MAX6351–MAX6360 family?
The MAX6353SZUK+T uses the 5-pin SOT23 package and shares identical pinout with MAX6352/MAX6354 variants (RST, GND, MR, VCC2, VCC1). However, it is not pin-compatible with 6-pin variants (e.g., MAX6356) or open-drain versions (e.g., MAX6352), due to differing output structure and pin 5 functionality.
MAX6353SZUK+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:
- 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.
MAX6353SZUK+T Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
