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Analog Devices Inc./Maxim Integrated MAX6353RVUK-T
- Part No.:
- MAX6353RVUK-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6353RVUK-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
The MAX6353RVUK-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 2.63V (VCC1) and 1.58V (VCC2), 20µA supply current, and operation over –40°C to +85°C. It monitors two independent power rails in multivoltage systems and asserts reset if either supply drops below its threshold - used in portable battery-powered equipment requiring reliable power-on reset and manual reset debouncing.
For engineers reviewing the MAX6353RVUK-T datasheet, MAX6353RVUK-T pinout, MAX6353RVUK-T application, or MAX6353RVUK-T equivalent, key selection criteria include dual-supply monitoring capability, guaranteed RESET validity down to VCC1 = 1V or VCC2 = 1V, 100ms minimum power-on-reset pulse width, and compatibility with TTL/CMOS manual-reset inputs.
Technical Context
The MAX6353RVUK-T implements dual independent voltage comparators with hysteresis, each feeding a glitch-filtered reset generator. Its reset logic asserts an active-low push-pull output referenced solely to VCC1 when either VCC1 < 2.63V or VCC2 < 1.58V (over temperature), with no internal watchdog or third-voltage monitor.
It features a debounced manual-reset input (MR) with 1µs minimum pulse width and 100ns glitch rejection, and guarantees valid reset output as long as at least one supply remains ≥1.0V - enabling robust operation during brownout or asymmetric rail collapse in embedded controllers and intelligent instruments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 2.63V ±0.05V (–40°C to +85°C); precise trip point for primary supply monitoring |
| VCC2 Threshold | 1.58V ±0.03V (–40°C to +85°C); enables low-voltage auxiliary rail supervision |
| Supply Current | 20µA typical at +25°C; ultra-low quiescent draw for battery longevity |
| Reset Pulse Width | 100ms minimum; ensures full μP initialization before release |
| Operating Temp | –40°C to +85°C; qualified for industrial and extended-temperature embedded use |
| Reset Output Type | Active-low push-pull referenced to VCC1; eliminates external pull-up and supports direct μP reset pin drive |
| MR Input Compatibility | TTL/CMOS-debounced; accepts standard logic-level manual reset signals without external RC |
Pinout & Package
MAX6353RVUK-T 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; drives μP reset pin directly |
| 2 | GND | Analog/digital ground reference; must be connected to system ground plane |
| 3 | MR | Debounced manual-reset input; pulled high internally; assert low ≥1µs to trigger reset |
| 4 | VCC2 | Secondary supply input and monitor rail; powers device when > VCC1 and triggers reset if < 1.58V |
| 5 | VCC1 | Primary supply input and monitor rail; powers device when > VCC2 and triggers reset if < 2.63V |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneously supervises two non-identical rails (e.g., 2.63V core + 1.58V I/O) with separate thresholds and hysteresis |
| No external components required | Self-contained supervision - no resistors, capacitors, or pull-ups needed for basic dual-rail reset generation |
| Guaranteed RESET validity to 1V | Reset remains asserted and electrically valid even as VCC1 or VCC2 collapses to 1.0V, ensuring clean release timing |
| Power-supply transient immunity | Rejects short negative-going transients on VCC1/VCC2 (≤200ns at 0.5V overdrive), preventing false resets |
| Low-cost SOT23 packaging | 5-pin SOT23 footprint minimizes board area and assembly cost versus discrete or larger-package alternatives |
Applications
| Portable/Battery-Powered Equipment | Intelligent Instruments |
|---|---|
Use Scenario: Supervising dual-rail power in handheld test meters with 2.6V analog front-end and 1.6V digital subsystem. IC Role / Device Role / Timing Role: Dual-voltage supervisor asserting single active-low reset to MCU upon undervoltage on either rail. Use Value: Prevents erratic MCU behavior during battery discharge by guaranteeing reset until both rails stabilize above 2.63V and 1.58V respectively. | Use Scenario: Monitoring main 2.63V processor supply and 1.58V sensor interface rail in programmable logic controller modules. IC Role / Device Role / Timing Role: Primary reset source coordinating power-up sequencing and brownout recovery across heterogeneous subsystems. Use Value: Enables deterministic system boot and fault recovery without software intervention or external timing components. |
| Computers | Multivoltage Systems |
Use Scenario: Providing fail-safe reset for embedded controllers in compact PC peripherals (e.g., USB-C PD adapters) with split 2.63V control and 1.58V communication rails. IC Role / Device Role / Timing Role: Hardware-enforced reset generator with manual override, decoupled from firmware execution state. Use Value: Eliminates risk of hung states due to incomplete power sequencing or supply coupling noise between rails. | Use Scenario: Supervising asymmetric supplies in FPGA-based edge AI accelerators (e.g., 2.63V core, 1.58V I/O bank). IC Role / Device Role / Timing Role: Dedicated hardware monitor ensuring all voltage domains meet specification before releasing FPGA configuration reset. Use Value: Reduces design validation effort by replacing custom discrete supervisor circuits with a single guaranteed-spec IC. |
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 = 4.38V (vs. 2.63V); same package, pinout, and function | Suitable for systems with higher primary rail (e.g., 4.38V LDO output), not for 2.63V/1.58V configurations | Select only when matching exact threshold requirements; not interchangeable without circuit redesign. |
| TPS3808G15DBVR | Single-supply supervisor (1.5V threshold only); no VCC2 monitoring; different pinout and enable logic | Lacks dual-rail capability - requires additional supervisor or discrete solution for second rail | Use only for single-rail applications; MAX6353RVUK-T provides integrated dual monitoring unavailable in TPS3808G15DBVR. |
Compared with MAX6353MTUK-T, the MAX6353RVUK-T enables lower-voltage primary rail supervision critical for modern low-power SoCs; compared with TPS3808G15DBVR, it delivers true dual-supply coordination in one device, reducing BOM count and layout complexity.
Availability
MAX6353RVUK-T is available at Aetrix Electronics and suitable for portable/battery-powered equipment, intelligent instruments, and multivoltage systems requiring stable component supply, long-term industrial lifecycle support, and RoHS-compliant packaging.
Supply support for MAX6353RVUK-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, computing, and communications applications, with emphasis on reliability, integration, and low-power operation.
The MAX6351–MAX6360 product line delivers highly accurate, low-quiescent-current supervisory circuits for multivoltage microprocessor systems - engineered to replace discrete solutions while guaranteeing performance across extended temperature ranges.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6353RVUK-T?
The MAX6353RVUK-T has a factory-set VCC1 threshold of 2.63V (±0.05V over –40°C to +85°C) and VCC2 threshold of 1.58V (±0.03V over temperature). These values are laser-trimmed during production and documented in the Voltage Threshold Levels table of the MAX6353RVUK-T datasheet - no external adjustment is required or supported.
Does the MAX6353RVUK-T include a watchdog timer function?
No, the MAX6353RVUK-T does not include a watchdog timer. Watchdog functionality is exclusive to the MAX6358/MAX6359/MAX6360 variants in the family. The MAX6353RVUK-T provides only dual-voltage monitoring, manual reset input, and a single active-low push-pull reset output referenced to VCC1.
What is the minimum supply voltage required for the MAX6353RVUK-T to maintain valid reset output?
The MAX6353RVUK-T guarantees valid reset output as long as either VCC1 ≥ 1.0V or VCC2 ≥ 1.0V - confirmed across the full –40°C to +85°C operating range. This ensures reliable reset assertion during deep brownout conditions where one rail may collapse well below nominal voltage while the other remains marginally functional.
Can the MAX6353RVUK-T monitor three voltage rails?
No, the MAX6353RVUK-T monitors exactly two voltage rails: VCC1 and VCC2. Three-rail monitoring is provided only by the MAX6355/MAX6356/MAX6357 variants, which include the RSTIN input for a third adjustable threshold. The MAX6353RVUK-T has no RSTIN pin and cannot supervise a third supply.
Is the MAX6353RVUK-T pin-compatible with other devices in the MAX6351–MAX6360 family?
The MAX6353RVUK-T uses the 5-pin SOT23 package and shares identical pinout with MAX6352_ _UK-T and MAX6354_ _UK-T. However, it is not pin-compatible with 6-pin variants (e.g., MAX6351, MAX6355) or with devices having different reset output types (e.g., open-drain MAX6352) - always verify pin function mapping per the MAX6353RVUK-T specific pin description table.
MAX6353RVUK-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:
- 1.58V, 2.63V
- 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
MAX6353RVUK-T FAQ
1.How can I place an order for MAX6353RVUK-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6353RVUK-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 MAX6353RVUK-T reliable?
The price and inventory of MAX6353RVUK-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6353RVUK-T is usually 5 days.
3.What payment methods are accepted for MAX6353RVUK-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6353RVUK-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6353RVUK-T?
MAX6353RVUK-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6353RVUK-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 MAX6353RVUK-T?
For technical support, including MAX6353RVUK-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6353RVUK-T requirements.
6.How does Aetrix verify that MAX6353RVUK-T is sourced from the original manufacturer or authorized distributors?
All MAX6353RVUK-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 MAX6353RVUK-T meets industry standards.
7.What is the process for return or replacement of MAX6353RVUK-T?
All MAX6353RVUK-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6353RVUK-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 MAX6353RVUK-T part is unused and in its original packaging.
Return procedure for MAX6353RVUK-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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