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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:
- MAX6353 DUAL-VOLTAGE MICROPROCES
- Quantity:
- Payment:
- Shipping:
Inventory:7,645
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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 (2.63V) and VCC2 (1.58V), active-low push-pull RST output referenced to VCC1, 100ms minimum reset pulse width, and 20µA supply current - used in multivoltage embedded systems to ensure reliable power-on and brownout reset sequencing.
For engineers reviewing the MAX6353RVUK+ datasheet, MAX6353RVUK+ pinout, MAX6353RVUK+ application, or MAX6353RVUK+ equivalent, this page delivers verified circuit role, exact voltage thresholds, guaranteed reset validity down to VCC1 = 1.0V, watchdog-free operation, and SOT23-5 package compatibility - critical for battery-powered controllers and industrial multirail systems.
Technical Context
The MAX6353RVUK+ monitors two independent supply rails: VCC1 at 2.63V ±1.5% and VCC2 at 1.58V ±1.5%, asserting its single active-low push-pull RST output whenever either rail drops below its respective threshold. Reset remains valid as long as VCC1 ≥ 1.0V or VCC2 ≥ 1.0V, enabling robust low-voltage operation during brownout conditions.
It features a debounced TTL/CMOS-compatible manual reset input (MR), 100ms min reset timeout period, and no watchdog timer - distinguishing it from MAX6359/MAX6360 variants. Its internal comparator architecture guarantees monotonic reset assertion without chatter across -40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 2.63V ±1.5% - precise trip point for primary supply monitoring |
| VCC2 Threshold | 1.58V ±1.5% - dedicated low-voltage rail supervision (e.g., core logic or I/O) |
| Reset Pulse Width | 100ms minimum - ensures sufficient duration for µP initialization |
| Supply Current | 20µA typical - enables ultra-low-power operation in battery-backed systems |
| Operating Temp | -40°C to +85°C - qualified for industrial and extended-temperature environments |
| Reset Output Type | Active-low push-pull referenced to VCC1 - eliminates external pull-up, drives directly into µP reset pin |
| Reset Validity | Guaranteed while VCC1 ≥ 1.0V or VCC2 ≥ 1.0V - supports deep brownout detection |
Pinout & Package
MAX6353RVUK+ is housed in a 5-pin SOT23-5 package (JEDEC MO-178AA), with 1.3mm × 2.9mm footprint, 0.95mm height, and gull-wing leads. Pin 1 is RST (active-low push-pull), 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 reset output | Push-pull driver referenced to VCC1 - sinks 1.2mA @ VCC1 ≥ 2.7V; no external pull-up required |
| Pin 2 (GND) | Ground reference | Common return path for both VCC1 and VCC2 supplies and internal comparators |
| Pin 3 (MR) | Manual reset input | Debounced active-low CMOS/TTL input - forces reset when pulled ≤0.3×VCC1; internal 32–100kΩ pullup |
| Pin 4 (VCC2) | Secondary supply input | Powers internal circuitry when VCC2 > VCC1; monitored at 1.58V threshold |
| Pin 5 (VCC1) | Primary supply input | Powers internal circuitry when VCC1 > VCC2; monitored at 2.63V threshold; RST output referenced to this rail |
Key Features
| Feature | Design Value |
|---|---|
| Dual-rail voltage monitoring | Independent 2.63V and 1.58V thresholds with ±1.5% accuracy over temperature - eliminates need for discrete resistor dividers or multiple supervisors |
| Push-pull RST output | Active-low, VCC1-referenced output capable of sinking 1.2mA - directly interfaces µP reset pins without pull-up resistors or level shifters |
| Low quiescent current | 20µA typical supply current - extends battery life in portable equipment and maintains system readiness during sleep modes |
| Brownout resilience | Reset remains valid down to VCC1 = 1.0V or VCC2 = 1.0V - ensures deterministic reset behavior during severe undervoltage events |
| Transient immunity | Immune to VCC transients <100ns at 100mV overdrive - prevents false resets from switching noise or ESD-induced supply glitches |
Applications
| Industrial PLC Controllers | Portable Medical Monitors |
|---|---|
|
Use Scenario: Multirail controller board with 2.5V FPGA core and 1.5V I/O bank powered from shared DC-DC converters. IC Role / Device Role / Timing Role: Dual-threshold supervisor ensuring synchronized reset assertion if either rail collapses during startup or load transients. Use Value: Prevents partial initialization by guaranteeing 100ms reset pulse while maintaining validity down to 1.0V on either rail - critical for deterministic firmware boot. |
Use Scenario: Battery-powered ECG device with 2.6V analog front-end and 1.6V microcontroller core operating from Li-ion cell (2.8–4.2V). IC Role / Device Role / Timing Role: Primary reset generator monitoring both regulated rails to detect end-of-life battery sag before system lockup. Use Value: 20µA quiescent current minimizes standby drain; 2.63V/1.58V thresholds match actual rail tolerances - avoids premature shutdown during nominal operation. |
| Automotive Body Control Modules | Smart Energy Meters |
|
Use Scenario: CAN-enabled BCM with separate 2.6V MCU domain and 1.6V sensor interface powered from automotive 12V input via dual LDOs. IC Role / Device Role / Timing Role: Fault-tolerant reset supervisor detecting undervoltage on either domain during cold-crank or load-dump events. Use Value: Guaranteed operation over -40°C to +85°C and immunity to sub-100ns supply transients prevent spurious resets in harsh electrical environments. |
Use Scenario: DIN-rail meter with isolated 2.6V metrology ASIC and 1.6V communication processor sharing a single AC-DC supply. IC Role / Device Role / Timing Role: Dual-supply monitor enforcing strict power sequencing compliance per IEC 62056 standards. Use Value: Precise 2.63V/1.58V thresholds eliminate margin stacking; push-pull RST drives isolated reset isolator without external components. |
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); same SOT23-5 package and pinout | Designed for 3.3V/5V systems rather than low-voltage 2.6V/1.6V domains | Select when primary rail is 3.3V or higher and secondary rail is ≥2.93V |
| TPS3808G18DBVR | Single-supply (1.8V threshold only); open-drain RST; requires external pull-up | Lacks dual-rail monitoring - cannot replace MAX6353RVUK+ without adding second supervisor or redesign | Use only in single-rail systems where cost and footprint outweigh dual-monitoring requirement |
Compared with MAX6353MTUK+, MAX6353RVUK+ provides lower VCC1/VCC2 thresholds optimized for modern low-power SoCs, while TPS3808G18DBVR lacks integrated dual-rail capability - making MAX6353RVUK+ irreplaceable in compact multivoltage designs requiring guaranteed 100ms reset and push-pull drive.
Availability
MAX6353RVUK+ is available at Aetrix Electronics and suitable for industrial PLC controllers, portable medical monitors, automotive body control modules, smart energy meters, and battery-powered instrumentation requiring stable component supply across extended temperature ranges.
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 computing applications.
The MAX6351–MAX6360 family was designed specifically for multivoltage microprocessor systems requiring precise, low-power, dual-rail supervision with guaranteed reset validity under brownout - targeting space-constrained embedded platforms.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6353RVUK+?
The MAX6353RVUK+ has a factory-set VCC1 threshold of 2.63V ±1.5% and a VCC2 threshold of 1.58V ±1.5%, both specified over the full -40°C to +85°C operating range. These values are confirmed in the Voltage Threshold Levels table and Electrical Characteristics section of the official MAX6351–MAX6360 datasheet (Rev 6, 12/05), and are not adjustable or user-configurable.
Does the MAX6353RVUK+ include a watchdog timer function?
No, the MAX6353RVUK+ does not include a watchdog timer. It belongs to the MAX6353 subgroup (alongside MAX6356/MAX6359), which omits the WDI pin and associated timing circuitry. Watchdog functionality is only present in MAX6358/MAX6359/MAX6360 variants - the MAX6353RVUK+ is strictly a dual-voltage reset supervisor with manual reset input and no timeout monitoring.
What is the output type and drive capability of the RST pin on the MAX6353RVUK+?
The RST pin on the MAX6353RVUK+ is an active-low push-pull output referenced to VCC1. It can sink up to 1.2mA when VCC1 ≥ 2.7V and VCC2 ≥ 2.7V, with VOL ≤ 0.3V. This eliminates the need for an external pull-up resistor and allows direct connection to most microprocessor reset inputs without additional buffering or level translation.
Can the MAX6353RVUK+ operate reliably if one supply rail drops to 1.0V?
Yes - the MAX6353RVUK+ guarantees valid RST output state as long as either VCC1 ≥ 1.0V or VCC2 ≥ 1.0V, per Absolute Maximum Ratings and Electrical Characteristics tables. This feature ensures deterministic reset behavior during deep brownout conditions where one rail collapses while the other remains marginally functional - a key reliability advantage over single-supply supervisors.
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/MAX6353/MAX6354 variants: Pin 1 = RST, Pin 2 = GND, Pin 3 = MR, Pin 4 = VCC2, Pin 5 = VCC1. However, it is not pin-compatible with 6-pin variants (e.g., MAX6351, MAX6355, MAX6358) due to differing pin count and functions - always verify package and pin configuration before substitution.
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:
- -
- 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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