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Analog Devices Inc./Maxim Integrated MAX6353RVUK
- Part No.:
- MAX6353RVUK
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6353RVUK.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,683
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Product details
Overview
MAX6353RVUK from Maxim Integrated is a dual-voltage microprocessor supervisory IC with precision reset threshold monitoring for VCC1 and VCC2, featuring an active-low push-pull RST output referenced to VCC1, 20µA supply current, 100ms minimum power-on reset pulse width, and guaranteed RESET validity down to VCC1 = 1V or VCC2 = 1V. It is designed for multivoltage embedded systems requiring reliable power-up sequencing and fault detection in portable and industrial control applications.
For engineers reviewing the MAX6353RVUK datasheet, MAX6353RVUK pinout, MAX6353RVUK application, or MAX6353RVUK equivalent, this device delivers verified dual-supply monitoring with factory-set thresholds (VTH1 = 2.63V, VTH2 = 1.58V), SOT23-5 packaging, -40°C to +85°C operation, and integrated manual reset debouncing - critical for robust system initialization in battery-powered and multirail designs.
Technical Context
The MAX6353RVUK implements independent voltage comparators for two supply rails (VCC1 and VCC2), asserting its single active-low push-pull RST output whenever either supply drops below its respective factory-trimmed threshold (2.63V/1.58V). Its internal logic guarantees valid reset assertion as long as at least one supply remains ≥1.0V, enabling fail-safe behavior during brownout transitions.
It integrates a debounced TTL/CMOS-compatible manual reset input (MR) with 1µs minimum pulse width and 100ns glitch rejection, and supports system-level reliability via power-supply transient immunity up to 250µs at 1V overdrive. No external components are required for dual-voltage supervision, eliminating discrete resistor-divider dependencies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 2.63V ±30mV (factory-trimmed; ensures precise reset activation for primary 2.7V–3.3V rail) |
| VCC2 Threshold | 1.58V ±30mV (factory-trimmed; enables accurate monitoring of secondary 1.6V–1.8V rail) |
| Supply Current | 20µA typical (enables ultra-low-power operation in battery-backed systems) |
| Reset Pulse Width | 100ms minimum (guarantees sufficient duration for µP initialization across temperature) |
| Operating Temp | -40°C to +85°C (fully specified for industrial and extended-environment deployment) |
| RESET Validity | Valid down to VCC1 ≥ 1.0V or VCC2 ≥ 1.0V (ensures reset integrity during deep brownout) |
| Output Type | Active-low push-pull referenced to VCC1 (eliminates external pull-up; drives directly into µP reset pin) |
Pinout & Package
MAX6353RVUK is housed in a 5-pin SOT23 package (JEDEC MO-178AA), with 1.6mm × 2.9mm footprint and 0.95mm height, optimized for space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RST | Active-low reset output | Push-pull driver referenced to VCC1; sinks 1.2mA @ VCC1 ≥ 2.7V; no external pull-up needed |
| 2 - GND | Ground reference | Common return path for all internal circuitry and reset output; must be low-impedance |
| 3 - MR | Manual reset input | Debounced active-low input; pulls RST low when asserted; internally pulled up to VCC1 (63.5kΩ typical) |
| 4 - VCC2 | Secondary supply input | Powers internal comparator for VCC2 monitoring; also monitored against 1.58V threshold |
| 5 - VCC1 | Primary supply input | Powers device core and RST output stage; monitored against 2.63V threshold; defines RST logic level |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneous precision tracking of two rails (VCC1/VCC2) with separate factory-set thresholds avoids cascaded failure modes |
| No external components required | Eliminates resistor dividers, capacitors, or additional ICs for dual-rail supervision - reduces BOM count and layout area |
| Guaranteed reset validity to 1.0V | Ensures deterministic reset assertion even during severe brownout conditions where VCC1 or VCC2 dips near 1V |
| 20µA ultra-low quiescent current | Extends battery life in portable equipment without compromising supervision accuracy or timing margins |
| 100ms min reset pulse width | Meets or exceeds µP reset hold-time requirements across full temperature range without external timing elements |
Applications
| Industrial PLC Controllers | Portable Medical Devices |
|---|---|
Use Scenario: Multirail controller board with +3.3V I/O and +1.8V core logic powered from shared DC-DC converter. IC Role / Device Role / Timing Role: Dual-voltage supervisor ensuring synchronized reset assertion if either rail collapses during ESD event or load transient. Use Value: Prevents partial initialization and latch-up by guaranteeing reset remains active until both supplies stabilize above 2.63V and 1.58V respectively. |
Use Scenario: Battery-powered glucose meter with Li-ion cell (2.8–4.2V) and LDO-regulated 1.8V sensor rail. IC Role / Device Role / Timing Role: Monitors main battery voltage (VCC1) and regulated sensor rail (VCC2) to trigger safe shutdown before brownout-induced data corruption. Use Value: 20µA supply current extends usable battery life; 1.58V VCC2 threshold matches 1.8V LDO dropout margin precisely. |
| Automotive Body Control Modules | IoT Edge Sensor Nodes |
Use Scenario: 12V automotive system with 5V MCU rail and 3.3V CAN transceiver rail subject to load dump and cold-crank transients. IC Role / Device Role / Timing Role: Supervises dual rails to detect undervoltage on either domain and assert hardware reset before firmware executes corrupted code. Use Value: Power-supply transient immunity rejects <250µs glitches; -40°C to +85°C rating ensures operation under hood temperature extremes. |
Use Scenario: LoRaWAN node with intermittent solar charging, using buck converter to generate 3.0V MCU rail and 1.6V RF amplifier rail. IC Role / Device Role / Timing Role: Detects collapse of either rail during low-light charging gaps and holds MCU in reset until both supplies recover. Use Value: Factory-set 2.63V/1.58V thresholds align with typical buck converter tolerances; SOT23-5 footprint minimizes PCB area in compact enclosure. |
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 | VCC1 threshold = 4.38V (vs. 2.63V); VCC2 threshold = 3.08V (vs. 1.58V); otherwise identical pinout, package, and features | Suitable for systems with +5V and +3.3V rails instead of +2.7V and +1.6V rails | Select only when higher threshold voltages match actual supply rails - not a drop-in replacement due to different trip points |
| TPS3808G33DBVR | Single-supply monitor (3.3V only); open-drain output; requires external pull-up; 1.6µA IQ; 200ms reset timeout | Lacks dual-rail capability; cannot replace MAX6353RVUK in multivoltage systems without redesign | Use only for single-rail applications where cost and ultra-low IQ outweigh need for dual monitoring |
Compared with MAX6353MTUK and TPS3808G33DBVR, the MAX6353RVUK uniquely provides matched 2.63V/1.58V thresholds in a 5-pin SOT23 with push-pull output - enabling direct integration into 2.7V/1.6V systems without external components or layout changes.
Availability
MAX6353RVUK is available at Aetrix Electronics and suitable for industrial PLC controllers, portable medical devices, automotive body control modules, IoT edge sensor nodes, and multivoltage embedded systems requiring stable component supply, long-term lifecycle support, and guaranteed parametric performance across temperature.
Supply support for MAX6353RVUK 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, communications, and consumer applications.
The MAX6351–MAX6360 family was engineered specifically for multivoltage microprocessor supervision - delivering precision dual-threshold monitoring, ultra-low power, and robust reset generation in minimal SOT23 packages for space- and power-constrained systems.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6353RVUK?
The MAX6353RVUK has factory-trimmed reset thresholds of 2.63V ±30mV for VCC1 and 1.58V ±30mV for VCC2, as defined by the "RV" suffix per Maxim's Voltage Threshold Levels table. These values are fully guaranteed over the -40°C to +85°C operating temperature range and do not require external calibration or adjustment.
Does the MAX6353RVUK include a watchdog timer function?
No, the MAX6353RVUK does not include a watchdog timer. Watchdog functionality is exclusive to the MAX6358/MAX6359/MAX6360 variants in the same family. The MAX6353RVUK provides only dual-voltage monitoring with manual reset input and a single active-low push-pull RST output referenced to VCC1.
What is the output configuration of the RST pin on the MAX6353RVUK?
The RST pin on the MAX6353RVUK is an active-low push-pull output referenced to VCC1. It does not require an external pull-up resistor and can sink up to 1.2mA when VCC1 ≥ 2.7V. This differs from open-drain variants like MAX6352 and enables direct interfacing with most microprocessor reset inputs without additional components.
Can the MAX6353RVUK operate reliably if one supply drops below 1.0V?
Yes - the MAX6353RVUK guarantees valid RST output state as long as either VCC1 ≥ 1.0V or VCC2 ≥ 1.0V. If both supplies fall below 1.0V, reset behavior is not guaranteed. This feature ensures deterministic reset assertion during partial brownout conditions common in battery-depleted or poorly regulated systems.
Is the MAX6353RVUK pin-compatible with other devices in the MAX6351–MAX6360 family?
The MAX6353RVUK uses the 5-pin SOT23-5 package and shares identical pinout with MAX6352_ _UK-T and MAX6354_ _UK-T variants. However, functional differences exist: MAX6352 has open-drain RST, MAX6354 references RST to VCC2, and MAX6353RVUK references RST to VCC1. Pin compatibility does not imply functional interchangeability without circuit review.
MAX6353RVUK 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 FAQ
1.How can I place an order for MAX6353RVUK through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6353RVUK 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 reliable?
The price and inventory of MAX6353RVUK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6353RVUK is usually 5 days.
3.What payment methods are accepted for MAX6353RVUK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6353RVUK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6353RVUK?
MAX6353RVUK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6353RVUK 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?
For technical support, including MAX6353RVUK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6353RVUK requirements.
6.How does Aetrix verify that MAX6353RVUK is sourced from the original manufacturer or authorized distributors?
All MAX6353RVUK 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 meets industry standards.
7.What is the process for return or replacement of MAX6353RVUK?
All MAX6353RVUK units undergo pre-shipment inspection (PSI). If there is an issue with MAX6353RVUK, 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 part is unused and in its original packaging.
Return procedure for MAX6353RVUK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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