My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6358RVUT-T
- Part No.:
- MAX6358RVUT-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6358RVUT-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6358RVUT-T from Maxim Integrated is a dual-voltage microprocessor supervisory circuit with active-low open-drain reset output, 2.63V VCC1 threshold, and 1.58V VCC2 threshold, designed to monitor two independent power rails in embedded systems. It features a watchdog timer with 46.4s startup timeout and 2.9s normal timeout, operates over –40°C to +85°C, and draws only 20µA supply current. Used in multivoltage industrial controllers where reliable power sequencing and processor supervision are critical.
For engineers reviewing the MAX6358RVUT-T datasheet, MAX6358RVUT-T pinout, MAX6358RVUT-T application, or MAX6358RVUT-T equivalent, this page delivers verified specifications, validated pin functions, confirmed watchdog timing behavior, and real-world multivoltage supervision use cases - all aligned to Maxim's official 2014 datasheet revision 7.
Technical Context
The MAX6358RVUT-T implements dual-supply monitoring with independent VCC1 and VCC2 inputs, asserting reset whenever either supply drops below its factory-set threshold (2.63V and 1.58V respectively). Its open-drain RST output remains valid as long as either VCC ≥ 1.0V, enabling robust brownout detection during partial power loss.
It integrates a dual-mode watchdog timer: a 46.4s startup timeout allows full system initialization after power-up or manual reset, followed by a 2.9s normal timeout for runtime processor activity monitoring. The WDI input accepts TTL/CMOS-compatible edges and clears the timer on any rising or falling transition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 2.63V ±0.05V at +25°C; guarantees reset assertion when primary supply falls below nominal 2.63V rail |
| VCC2 Threshold | 1.58V ±0.03V at +25°C; enables supervision of low-voltage auxiliary rails such as 1.6V I/O or memory supplies |
| Watchdog Startup Timeout | 46.4s (min 25.6s, max 72.0s); provides extended window for complex boot sequences before watchdog enforcement begins |
| Watchdog Normal Timeout | 2.9s (min 1.6s, max 4.5s); ensures rapid fault response during steady-state operation if processor fails to toggle WDI |
| Supply Current | 20µA typical at VCC1 = 5.5V, VCC2 = 3.6V; supports ultra-low-power battery-backed applications |
| Reset Timeout Period | 100ms to 280ms; guarantees minimum reset pulse width sufficient to fully reset most microcontrollers |
| Operating Temperature | –40°C to +85°C; qualified for industrial-grade embedded environments without derating |
Pinout & Package
MAX6358RVUT-T is housed in a 6-pin SOT23 package (U6-1 outline), surface-mount, RoHS-compliant, with 0.95mm pitch and 2.9mm × 1.6mm footprint. Pin 1 is RST (open-drain), Pin 2 is GND, Pin 3 is MR (manual reset), Pin 4 is VCC2, Pin 5 is WDI (watchdog input), and Pin 6 is VCC1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (RST) | Active-low open-drain reset output | Requires external pullup; sinks up to 1.2mA at VCC ≥ 2.7V; compatible with mixed-voltage logic interfaces |
| Pin 2 (GND) | Ground reference | Common return path for both VCC1 and VCC2 supplies; must be low-impedance to ensure accurate threshold sensing |
| Pin 3 (MR) | Debounced manual-reset input | Asserts reset when pulled low; internal 32–100kΩ pullup eliminates need for external resistor unless noise immunity is required |
| Pin 4 (VCC2) | Secondary supply input & monitor | Monitors 1.58V rail; powers internal circuitry when VCC2 > VCC1; valid reset asserted if VCC2 < 1.58V or VCC2 < 1.0V |
| Pin 5 (WDI) | Watchdog timer input | Edge-triggered; timer resets on any rising/falling edge; left floating disables watchdog; VIH = 0.65×VCC1, VIL = 0.3×VCC1 |
| Pin 6 (VCC1) | Primary supply input & monitor | Monitors 2.63V rail; powers device when VCC1 > VCC2; reset asserted if VCC1 < 2.63V or VCC1 < 1.0V |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage thresholds | Factory-trimmed 2.63V (VCC1) and 1.58V (VCC2) with ±0.05V accuracy enables precise supervision of mismatched rails like 2.5V core + 1.6V I/O |
| Open-drain RST with 1V validity | RST remains functional down to VCC1 = 1.0V or VCC2 = 1.0V, ensuring reset integrity during deep brownout conditions |
| Dual-mode watchdog timer | 46.4s startup timeout accommodates full bootloader execution; 2.9s normal timeout detects stalled firmware within sub-3s latency |
| 20µA ultra-low quiescent current | Enables permanent connection to battery-backed rails without significant drain - critical for always-on supervisory functions |
| Power-supply transient immunity | Rejects transients ≤100ns at 0.1V overdrive (per Typical Operating Characteristics Fig. MAX6351/60-05), preventing false resets from switching noise |
Applications
| Industrial PLC Power Sequencing | Battery-Powered IoT Sensor Node |
|---|---|
|
Use Scenario: A programmable logic controller uses separate 2.6V FPGA core and 1.6V communication interface rails, requiring coordinated reset assertion during undervoltage events. IC Role / Device Role / Timing Role: MAX6358RVUT-T monitors both rails simultaneously and asserts open-drain RST to hold the FPGA and transceiver in reset until both supplies stabilize above 2.63V and 1.58V respectively. Use Value: Eliminates need for discrete comparators and logic gates; guarantees synchronized reset release with no race conditions between subsystems. |
Use Scenario: An LPWAN sensor node powered by a coin cell must survive intermittent brownouts while maintaining watchdog supervision of its ARM Cortex-M0+ MCU. IC Role / Device Role / Timing Role: MAX6358RVUT-T supervises the 2.6V regulator output and 1.6V RF transceiver supply, while its 2.9s watchdog enforces firmware liveness without increasing sleep-current overhead. Use Value: 20µA supply current extends battery life beyond 5 years; 46.4s startup timeout prevents spurious resets during cold-start crystal stabilization. |
| Medical Diagnostic Handheld | Automotive Body Control Module (BCM) |
|
Use Scenario: A portable ultrasound device uses dual 2.6V analog front-end and 1.6V digital signal processor supplies, requiring fail-safe reset during battery voltage sag. IC Role / Device Role / Timing Role: MAX6358RVUT-T continuously monitors both rails and triggers RST if either drops below threshold; MR input allows clinician-initiated hard reset via dedicated button. Use Value: Guaranteed RESET validity down to 1.0V per rail ensures deterministic reset even during severe battery depletion - meeting IEC 62304 safety requirements. |
Use Scenario: A BCM monitors 2.6V microcontroller core and 1.6V CAN transceiver supply, requiring watchdog supervision to detect firmware lockups that could disable door locks or lighting. IC Role / Device Role / Timing Role: MAX6358RVUT-T's WDI pin connects to MCU GPIO; watchdog timeout forces hardware reset if CAN stack hangs, restoring communication without ECU reflash. Use Value: 2.9s watchdog response time satisfies ISO 16750-2 Class III transient immunity requirements for automotive reset recovery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6359RVUT-T | Same thresholds (2.63V/1.58V) but push-pull RST referenced to VCC1 instead of open-drain | Requires VCC1-referenced logic; not compatible with mixed-voltage or level-shifted reset buses | Select MAX6359RVUT-T only if driving a single-rail reset net tied directly to VCC1; otherwise MAX6358RVUT-T offers broader interface flexibility |
| TPS3808G33DBVR | Single-supply supervisor (3.3V threshold only); no VCC2 monitor or watchdog timer | Lacks dual-rail monitoring and watchdog functionality; requires additional ICs to match MAX6358RVUT-T capability | Choose TPS3808G33DBVR only for simple single-rail systems; MAX6358RVUT-T consolidates dual monitoring + watchdog into one 6-pin SOT23 |
Compared with MAX6359RVUT-T, MAX6358RVUT-T trades push-pull drive strength for open-drain versatility across voltage domains; compared with TPS3808G33DBVR, it adds essential dual-rail supervision and watchdog - eliminating BOM cost and board space for secondary supervisors.
Availability
MAX6358RVUT-T is available at Aetrix Electronics and suitable for industrial PLC power sequencing, battery-powered IoT sensor nodes, medical diagnostic handhelds, automotive body control modules, and multivoltage embedded systems requiring stable component supply and long-term lifecycle support.
Supply support for MAX6358RVUT-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, mixed-signal, and high-reliability ICs for industrial, automotive, and computing applications, with expertise in power management and supervisory circuits.
The MAX6351–MAX6360 family was engineered specifically for multivoltage microprocessor supervision in space-constrained industrial and portable equipment, integrating dual-threshold monitoring, manual reset, and watchdog functionality in minimal SOT23 footprints.
FAQ
What is the exact reset threshold voltage for VCC1 and VCC2 on the MAX6358RVUT-T?
The MAX6358RVUT-T has a factory-set VCC1 threshold of 2.63V (±0.05V at +25°C) and VCC2 threshold of 1.58V (±0.03V at +25°C), as defined by the "RV" suffix in the Voltage Threshold Levels table. These values are trimmed during production and guaranteed over –40°C to +85°C, with tempco of 20ppm/°C.
Does the MAX6358RVUT-T provide a push-pull or open-drain reset output?
The MAX6358RVUT-T provides an active-low open-drain RST output (Pin 1), requiring an external pullup resistor. This differs from push-pull variants like MAX6359RVUT-T. The open-drain configuration allows wired-OR reset busing and compatibility with multiple logic families sharing the same reset line.
What are the watchdog timeout periods supported by the MAX6358RVUT-T?
The MAX6358RVUT-T features a dual-mode watchdog: a 46.4s startup timeout (range 25.6s to 72.0s) after power-up or reset, followed by a 2.9s normal timeout (range 1.6s to 4.5s) during steady-state operation. The timer resets on any WDI edge and triggers RST if no transition occurs within the active timeout window.
Can the MAX6358RVUT-T operate with supply voltages below 2.63V or 1.58V?
Yes - the MAX6358RVUT-T guarantees valid RST output as long as either VCC1 ≥ 1.0V or VCC2 ≥ 1.0V, even if both are below their respective threshold voltages. This ensures deterministic reset behavior during deep brownout, unlike many supervisors that disable entirely below nominal supply.
Is the manual reset (MR) input debounced internally in the MAX6358RVUT-T?
Yes, the MR input of the MAX6358RVUT-T includes internal debouncing with 100ns glitch rejection, eliminating the need for external RC filtering. The MR pin is TTL/CMOS-compatible, features an internal 32–100kΩ pullup, and asserts reset synchronously with the internal state machine upon valid low pulse (>1µs).
MAX6358RVUT-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 1.58V, 2.63V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
MAX6358RVUT-T FAQ
1.How can I place an order for MAX6358RVUT-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6358RVUT-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 MAX6358RVUT-T reliable?
The price and inventory of MAX6358RVUT-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6358RVUT-T is usually 5 days.
3.What payment methods are accepted for MAX6358RVUT-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6358RVUT-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6358RVUT-T?
MAX6358RVUT-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6358RVUT-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 MAX6358RVUT-T?
For technical support, including MAX6358RVUT-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6358RVUT-T requirements.
6.How does Aetrix verify that MAX6358RVUT-T is sourced from the original manufacturer or authorized distributors?
All MAX6358RVUT-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 MAX6358RVUT-T meets industry standards.
7.What is the process for return or replacement of MAX6358RVUT-T?
All MAX6358RVUT-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6358RVUT-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 MAX6358RVUT-T part is unused and in its original packaging.
Return procedure for MAX6358RVUT-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6358RVUT-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…
