My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6345LUT+
- Part No.:
- MAX6345LUT+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6345LUT+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:5,138
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6345LUT+ from Maxim Integrated is a precision 6-pin SOT23 microprocessor supervisory circuit with dual reset outputs (active-high push-pull RESET and active-low push-pull RESET), factory-trimmed 4.63V VCC reset threshold, +1.25V power-fail comparator input (PFI), and guaranteed reset assertion down to VCC = +1V. It monitors supply integrity in multivoltage embedded systems and provides early power-fail warning for orderly shutdown.
For engineers reviewing the MAX6345LUT+ datasheet, MAX6345LUT+ pinout, MAX6345LUT+ application, or MAX6345LUT+ equivalent, key selection criteria include dual-reset output polarity, 100ms minimum reset timeout, SOT23-6 footprint compatibility, and operation across –40°C to +125°C industrial temperature range.
Technical Context
The MAX6345LUT+ integrates two independent reset generators: one asserting RESET (active-high) and another asserting RESET (active-low), both with 100–280ms timeout after VCC rise or MR deassertion. Its internal +1.25V reference enables precise PFI monitoring for secondary supply or battery voltage detection.
Unlike MAX6342/MAX6343/MAX6344 variants, the MAX6345LUT+ replaces the manual-reset (MR) input with a second reset output - eliminating external reset initiation but enabling simultaneous high- and low-active reset signaling to heterogeneous logic domains or multiple ICs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 4.63V ±1.5% (factory-trimmed; ensures reliable reset assertion during 5V rail brownout) |
| Reset Timeout Period | 100ms min (guaranteed minimum pulse width prevents premature µP release during slow-rising supplies) |
| Supply Voltage Range | +1.0V to +5.5V (enables valid reset assertion even during deep brownout or ultra-low-power wake-up) |
| PFI Threshold | +1.25V (fixed internal reference for accurate power-fail or low-battery detection via external divider) |
| Operating Temperature | –40°C to +125°C (qualified for automotive under-hood and industrial control environments) |
| Supply Current | 1.2µA typical at +25°C (ultra-low quiescent current extends battery life in portable equipment) |
| RESET Output Drive | Push-pull, 0.4V max VOL @ 1.2mA sink (directly interfaces CMOS inputs without pull-up resistors) |
Pinout & Package
Package: 6-pin SOT23-6 (1.6mm × 2.9mm × 1.1mm body, 0.95mm pitch), lead-free per RoHS, top mark AADW.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VCC | Positive supply input | Primary monitored rail; powers internal comparators and reset generators |
| 2 - GND | Ground reference | Common return for all analog and digital functions; must be low-impedance |
| 3 - PFI | Power-fail monitor input | Accepts divided voltage from secondary supply; asserts PFO when < +1.25V |
| 4 - PFO | Power-fail comparator output | Active-low open-drain signal indicating secondary supply failure or battery depletion |
| 5 - RESET | Active-high push-pull reset output | Drives high after timeout; directly resets µPs with active-high reset pins |
| 6 - RESET | Active-low push-pull reset output | Drives low after timeout; compatible with standard active-low µP reset inputs |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent reset outputs | Simultaneous active-high and active-low signals eliminate need for external inverters or level translators |
| Factory-trimmed 4.63V threshold | ±1.5% accuracy over full temperature range reduces design margining and eliminates external resistor calibration |
| +1.25V precision PFI reference | Enables accurate monitoring of secondary rails (e.g., 3.3V, 2.5V, or battery) using only two external resistors |
| Guaranteed reset validity to VCC = +1V | Ensures deterministic behavior during deep brownout recovery without external biasing circuits |
| 100ms minimum reset timeout | Meets JEDEC JESD78 reliability requirements for µP initialization timing across voltage ramp rates |
Applications
| Portable/Battery-Powered Equipment | Telecom Equipment |
|---|---|
Use Scenario: Battery-powered handheld terminal with 5V main rail and 3.3V I/O rail requiring graceful shutdown before battery depletion. IC Role / Device Role / Timing Role: Supervisory circuit monitoring VCC and generating PFO-triggered interrupt prior to VCC dropout; dual RESET outputs coordinate processor and peripheral reset sequencing. Use Value: Prevents data corruption by initiating firmware-controlled save-and-shutdown routines 100ms before VCC falls below 4.63V. | Use Scenario: Line card in carrier-grade switch with redundant 5V supplies and hot-swap capability. IC Role / Device Role / Timing Role: Primary supervisor asserting both active-high and active-low reset to FPGA configuration logic and ASIC power management unit simultaneously. Use Value: Eliminates race conditions between heterogeneous reset domains during power-up and fault recovery. |
| Multivoltage Systems | Embedded Control Systems |
Use Scenario: Industrial PLC with separate 24V, 5V, and 3.3V rails powering CPU, I/O drivers, and communication interfaces. IC Role / Device Role / Timing Role: VCC-supervised reset generator with PFI monitoring 3.3V rail via resistor divider; PFO tied to FPGA interrupt pin for real-time rail health reporting. Use Value: Enables predictive maintenance by logging PFO assertion events before system-level failure occurs. | Use Scenario: Automotive body control module operating in under-hood environment with wide thermal swing. IC Role / Device Role / Timing Role: High-temperature qualified supervisor ensuring deterministic µP reset during cold-crank and load-dump transients. Use Value: Maintains functional safety compliance (ISO 26262 ASIL-B ready) by guaranteeing reset assertion across –40°C to +125°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6342LUT+ | Single active-low push-pull RESET output; includes MR input instead of second RESET | Requires external inverter or logic to generate active-high reset; supports manual reset initiation | Select when manual reset capability is required and dual-output timing coordination is unnecessary |
| TLV803EC26DBZR | Single active-low open-drain RESET; 2.63V threshold; no PFI/PFO function; SOT23-3 package | Lacks power-fail monitoring and dual-reset capability; smaller footprint but reduced feature set | Select for cost-sensitive, single-rail applications where PFI and dual outputs are not needed |
Compared with MAX6342LUT+, the MAX6345LUT+ trades manual reset flexibility for deterministic dual-polarity reset signaling - critical in systems with mixed-voltage logic families. Compared with TLV803EC26DBZR, it adds PFI monitoring, higher accuracy, wider temperature range, and dual outputs at the cost of larger SOT23-6 footprint.
Availability
MAX6345LUT+ is available at Aetrix Electronics and suitable for portable/battery-powered equipment, telecom equipment, multivoltage systems, and embedded control systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6345LUT+ 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 power management ICs for industrial, automotive, communications, and computing applications.
The MAX6342–MAX6345 family delivers highly accurate, low-power supervisory functions for microprocessor-based systems - optimized for reliability in harsh environments and minimal board space.
FAQ
What is the exact reset threshold voltage of the MAX6345LUT+?
The MAX6345LUT+ has a factory-trimmed VCC reset threshold of 4.63V with ±1.5% tolerance over the full –40°C to +125°C temperature range. This value is laser-trimmed during production and specified in the Electrical Characteristics table of the MAX6345LUT+ datasheet. The "L" suffix in MAX6345LUT+ explicitly denotes the 4.63V variant.
Does the MAX6345LUT+ support manual reset functionality?
No, the MAX6345LUT+ does not include a manual-reset (MR) input. Unlike the MAX6342LUT+ or MAX6343LUT+, the MAX6345LUT+ replaces the MR pin with a second reset output (RESET). Therefore, external hardware reset initiation is not possible with the MAX6345LUT+ - reset is triggered solely by VCC crossing the 4.63V threshold.
What is the function of the PFI and PFO pins on the MAX6345LUT+?
The PFI (Power-Fail Input) pin accepts a divided voltage from a secondary supply or battery and compares it against an internal +1.25V reference. When PFI falls below +1.25V, the PFO (Power-Fail Output) pin goes low, providing an early warning signal. On the MAX6345LUT+, PFO is an open-drain output used to trigger interrupts or initiate controlled shutdown before main supply failure.
Can the MAX6345LUT+ operate with supply voltages below 2.7V?
Yes, the MAX6345LUT+ operates across a supply voltage range of +1.0V to +5.5V and guarantees valid RESET/RESET output levels down to VCC = +1V. Its internal comparators and reset generators remain functional at ultralow voltages, making it suitable for battery-backed systems and deep brownout recovery scenarios where other supervisors fail.
What package type and marking code does the MAX6345LUT+ use?
The MAX6345LUT+ is supplied in a 6-pin SOT23-6 package with lead-free finish. Its top-side marking code is "AADW", as confirmed in the SOT Top Marks table of the MAX6345LUT+ datasheet. The "+" suffix indicates RoHS-compliant, lead-free packaging per Maxim's ordering nomenclature.
MAX6345LUT+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.63V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-6
MAX6345LUT+ FAQ
1.How can I place an order for MAX6345LUT+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6345LUT+ 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 MAX6345LUT+ reliable?
The price and inventory of MAX6345LUT+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6345LUT+ is usually 5 days.
3.What payment methods are accepted for MAX6345LUT+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6345LUT+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6345LUT+?
MAX6345LUT+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6345LUT+ 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 MAX6345LUT+?
For technical support, including MAX6345LUT+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6345LUT+ requirements.
6.How does Aetrix verify that MAX6345LUT+ is sourced from the original manufacturer or authorized distributors?
All MAX6345LUT+ 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 MAX6345LUT+ meets industry standards.
7.What is the process for return or replacement of MAX6345LUT+?
All MAX6345LUT+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6345LUT+, 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 MAX6345LUT+ part is unused and in its original packaging.
Return procedure for MAX6345LUT+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6345LUT+ 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…
