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Analog Devices Inc./Maxim Integrated MAX6353SVUK
- Part No.:
- MAX6353SVUK
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6353SVUK.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,505
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Product details
Overview
MAX6353SVUK 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 1.58V (VCC2), 20µA supply current, and guaranteed RESET validity down to VCC1 ≥ 1.0V or VCC2 ≥ 1.0V - used in multivoltage embedded systems to ensure reliable power-on and brownout reset sequencing.
For engineers reviewing the MAX6353SVUK datasheet, MAX6353SVUK pinout, MAX6353SVUK application, or MAX6353SVUK equivalent, key selection considerations include dual-supply threshold accuracy, reset timeout period (100–280ms), manual-reset debouncing, SOT23-5 package compatibility, and absence of watchdog timer functionality in this variant.
Technical Context
The MAX6353SVUK 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 for VCC1 and 1.58V for VCC2. Reset assertion is guaranteed as long as at least one supply remains ≥ 1.0V, enabling robust operation during asymmetric rail collapse.
It features a debounced TTL/CMOS-compatible manual-reset input (MR), 100ms minimum power-on-reset pulse width, and no internal watchdog timer - distinguishing it from MAX6359/MAX6360 variants. The device operates across –40°C to +85°C and draws only 20µA typical supply current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 2.93V ±0.05V at +25°C; guarantees reset assertion before critical logic voltage margin loss on primary supply rail |
| VCC2 Threshold | 1.58V ±0.03V at +25°C; enables precise monitoring of low-voltage auxiliary rails such as I/O or memory supplies |
| Supply Current | 20µA typical; supports ultra-low-power battery-backed or energy-harvesting applications without compromising supervision integrity |
| Reset Timeout | 100–280ms; ensures sufficient processor initialization time after power stabilization before releasing reset |
| RESET Validity | Guaranteed down to VCC1 ≥ 1.0V or VCC2 ≥ 1.0V; maintains deterministic reset state during deep brownout conditions |
| Operating Temp | –40°C to +85°C; qualified for industrial and extended-temperature embedded deployments |
| Package | 5-pin SOT23; footprint-compatible with space-constrained PCB layouts and automated assembly processes |
Pinout & Package
MAX6353SVUK is housed in a 5-pin SOT23 package (package code U5-1), with 1.6mm × 2.9mm body size, 0.95mm height, and standard 0.95mm lead pitch. Pin 1 is RST (active-low push-pull, referenced to VCC1), Pin 2 is GND, Pin 3 is MR (manual reset input), Pin 4 is VCC2, and Pin 5 is VCC1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (RST) | Active-low push-pull reset output | Referenced to VCC1; drives low without external pull-up; compatible with 1.8V–5.5V µP reset inputs |
| Pin 2 (GND) | Ground reference | Common return path for both supply rails and internal comparators; must be low-impedance |
| Pin 3 (MR) | Debounced manual-reset input | Pull low to force reset; internally debounced; valid over full VCC1 range (1.2V–5.5V) |
| Pin 4 (VCC2) | Secondary supply input & monitor | Monitors 1.58V threshold; powers internal circuitry when VCC2 > VCC1; must not exceed +6V |
| Pin 5 (VCC1) | Primary supply input & monitor | Monitors 2.93V threshold; powers internal circuitry when VCC1 > VCC2; defines RST output voltage level |
Key Features
| Feature | Design Value |
|---|---|
| Dual-voltage precision monitoring | Simultaneously tracks VCC1 = 2.93V and VCC2 = 1.58V with ±0.05V accuracy, eliminating need for discrete resistor-divider supervision |
| Push-pull RST output | Active-low CMOS output referenced to VCC1; eliminates external pull-up resistor and reduces BOM count |
| Low-quiescent-current operation | 20µA typical ICC enables use in always-on subsystems without impacting battery life or thermal budget |
| Extended supply validity | RESET remains valid down to VCC1 = 1.0V or VCC2 = 1.0V - critical for graceful shutdown in multi-rail brownout scenarios |
| Industrial temperature range | –40°C to +85°C operation ensures reliability in automotive infotainment, industrial PLCs, and outdoor edge devices |
Applications
| Computers | Portable/Battery-Powered Equipment |
|---|---|
Use Scenario: Dual-rail motherboard power sequencing with +3.3V CPU core and +1.5V DDR termination supplies. IC Role / Device Role / Timing Role: Supervises both rails and asserts synchronized reset to prevent CPU lockup during asymmetric power-up. Use Value: Eliminates risk of metastability by ensuring reset remains asserted until both supplies stabilize above 2.93V and 1.58V respectively. | Use Scenario: Smart sensor node powered by Li-ion battery with buck-boost regulator generating +3.0V system rail and +1.5V analog front-end rail. IC Role / Device Role / Timing Role: Monitors battery-derived rails and triggers controlled shutdown before undervoltage damage occurs. Use Value: 20µA quiescent current extends shelf life; 1.0V reset validity allows full utilization of battery discharge curve. |
| Controllers | Multivoltage Systems |
Use Scenario: Industrial motor controller using isolated +5V logic supply and +1.2V FPGA core supply. IC Role / Device Role / Timing Role: Provides fail-safe reset coordination between safety-critical logic and reconfigurable processing domains. Use Value: Push-pull RST referenced to VCC1 ensures clean interface with 5V-tolerant microcontroller reset pins without level-shifting. | Use Scenario: FPGA-based communications module requiring +2.5V transceiver, +1.8V I/O, and +1.2V core rails. IC Role / Device Role / Timing Role: Acts as centralized supervisor for non-sequenced multivoltage domain, asserting reset if any monitored rail fails. Use Value: Factory-trimmed thresholds eliminate calibration overhead; SOT23-5 footprint simplifies layout in dense FPGA carrier designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6353SUUK | VCC1 threshold = 2.93V, VCC2 threshold = 2.19V; same package and pinout | Suitable where secondary rail is +2.2V (e.g., USB PHY or analog sensor bias), not +1.58V | Select when monitoring higher VCC2 rails; identical timing and interface behavior otherwise |
| TPS3808G18DBVR | Single-supply supervisor (1.8V threshold only); open-drain RST; 1.6µA IQ; no VCC2 monitoring | Requires separate supervision for second rail; lower power but higher component count | Choose only for single-rail systems or when adding discrete comparator for second rail is acceptable |
Compared with MAX6353SVUK, MAX6353SUUK offers identical form-factor and function but targets +2.19V secondary rails instead of +1.58V, while TPS3808G18DBVR reduces power consumption significantly but sacrifices dual-rail integration - making MAX6353SVUK optimal for compact, self-contained dual-supply supervision.
Availability
MAX6353SVUK is available at Aetrix Electronics and suitable for computers, portable/battery-powered equipment, and multivoltage systems requiring stable component supply, consistent parametric performance, and long-term industrial-grade availability.
Supply support for MAX6353SVUK 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, automotive, and communications markets.
The MAX6351–MAX6360 product line delivers integrated dual- and triple-voltage supervision for multirail embedded systems - designed to replace discrete solutions with guaranteed timing, reduced board area, and simplified qualification.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6353SVUK?
The MAX6353SVUK has a factory-trimmed VCC1 threshold of 2.93V (±0.05V at +25°C) and a VCC2 threshold of 1.58V (±0.03V at +25°C), as defined by the "SV" suffix per Maxim's Voltage Threshold Levels table. These values are guaranteed over –40°C to +85°C, with worst-case tolerances specified in the Electrical Characteristics section of the MAX6353SVUK datasheet.
Does the MAX6353SVUK include a watchdog timer function?
No, the MAX6353SVUK does not include a watchdog timer. Watchdog functionality is exclusive to MAX6358/MAX6359/MAX6360 variants (identified by "UT-T" or "UW-T" suffixes and 6-pin SOT23 packaging). The MAX6353SVUK is a 5-pin device with only dual-voltage monitoring and manual reset - confirmed by its ordering information, pin configuration, and functional description in the MAX6351–MAX6360 datasheet.
What is the output type and drive capability of the RST pin on the MAX6353SVUK?
The RST pin on the MAX6353SVUK is an active-low push-pull CMOS output referenced to VCC1. It sinks 1.2mA at ≤0.3V when VCC1 ≥ 2.7V, and sources 350µA at ≥0.8×VCC1 under valid reset-release conditions. This eliminates the need for an external pull-up resistor and ensures direct compatibility with standard µP reset inputs across the 1.2V–5.5V operating range.
Can the MAX6353SVUK operate with VCC1 and VCC2 supplied from different voltage sources?
Yes, the MAX6353SVUK is explicitly designed for independent dual-supply operation: VCC1 and VCC2 may be derived from separate regulators or power domains (e.g., +3.0V system rail and +1.5V analog rail). Its internal architecture guarantees RESET assertion if either supply drops below its respective threshold, and RESET remains valid as long as at least one supply stays ≥ 1.0V - a key feature confirmed in the Absolute Maximum Ratings and Detailed Description sections.
Is the MAX6353SVUK pin-compatible with other members of the MAX6351–MAX6360 family?
The MAX6353SVUK shares the same 5-pin SOT23 package and pinout (RST, GND, MR, VCC2, VCC1) with MAX6352/MAX6354 variants, but differs functionally: MAX6352 has open-drain RST, MAX6354 references RST to VCC2, and MAX6353SVUK references RST to VCC1. Thus, while physically pin-compatible, electrical interface behavior varies - requiring verification of reset polarity, drive type, and voltage reference before substitution.
MAX6353SVUK 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:
- 1.58V, 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
MAX6353SVUK FAQ
1.How can I place an order for MAX6353SVUK through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6353SVUK 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 MAX6353SVUK reliable?
The price and inventory of MAX6353SVUK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6353SVUK is usually 5 days.
3.What payment methods are accepted for MAX6353SVUK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6353SVUK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6353SVUK?
MAX6353SVUK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6353SVUK 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 MAX6353SVUK?
For technical support, including MAX6353SVUK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6353SVUK requirements.
6.How does Aetrix verify that MAX6353SVUK is sourced from the original manufacturer or authorized distributors?
All MAX6353SVUK 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 MAX6353SVUK meets industry standards.
7.What is the process for return or replacement of MAX6353SVUK?
All MAX6353SVUK units undergo pre-shipment inspection (PSI). If there is an issue with MAX6353SVUK, 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 MAX6353SVUK part is unused and in its original packaging.
Return procedure for MAX6353SVUK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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