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Analog Devices Inc./Maxim Integrated MAX6453UT16S+
- Part No.:
- MAX6453UT16S+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6453UT16S+.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,431
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Product details
Overview
MAX6453UT16S+ from Maxim Integrated is a low-power dual-voltage microprocessor supervisor IC with separate VCC reset and manual reset outputs, factory-set 1.575V VCC reset threshold, 0.63V adjustable RSTIN input, 140ms minimum reset timeout, and push-pull active-low RESET/MROUT outputs in SOT23-6 package - used for reliable power-on reset and controlled system interrupt in consumer electronics.
For engineers reviewing the MAX6453UT16S+ datasheet, MAX6453UT16S+ pinout, MAX6453UT16S+ application, or MAX6453UT16S+ equivalent, this page delivers verified electrical parameters, functional timing behavior, real-world use cases, and validated alternative options for soft/hard reset implementation in embedded systems requiring stable brownout immunity and low quiescent current.
Technical Context
The MAX6453UT16S+ implements independent monitoring of VCC (1.575V threshold) and an externally adjustable voltage via high-impedance RSTIN (0.63V reference), with separate assertion paths for RESET (VCC/RSTIN-triggered) and MROUT (MR-triggered only). Its push-pull outputs drive µP reset and NMI inputs directly without external pullups.
It features guaranteed valid reset operation down to VCC = 1.0V, 6µA typical supply current at 3.6V, and immunity to transients ≤20µs when overdriven by 100mV below threshold - enabling robust operation during noisy power sequencing in space-constrained consumer devices.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 1.575V ±1.5% - precisely monitors 1.6V nominal supply rails with 2.5mV hysteresis to prevent chatter during slow-rising VCC. |
| RSTIN Threshold | 0.630V ±1.6% - enables monitoring of secondary voltages (e.g., 1.2V core) using external resistor divider with <25nA input bias. |
| Reset Timeout Period | 140ms min - ensures µP completes full initialization before release, compatible with common boot ROM timing requirements. |
| Supply Current | 6µA typ at 3.6V - supports battery-backed or always-on subsystems without compromising runtime. |
| Operating Voltage Range | 1.0V to 5.5V - guarantees functional reset assertion even during deep brownout conditions down to 1.0V VCC. |
| Output Type | Active-low push-pull - eliminates need for external pullup resistors on RESET and MROUT, simplifying PCB layout and reducing BOM count. |
| Temperature Range | -40°C to +85°C - fully specified for industrial and consumer equipment operating in uncontrolled ambient environments. |
Pinout & Package
SOT23-6 package (6-pin, 1.6mm × 2.9mm footprint, 0.95mm height), lead(Pb)-free, RoHS-compliant, tape-and-reel packaging (2500 pcs/reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-low push-pull output asserted when VCC or RSTIN falls below threshold; remains low ≥140ms after recovery - directly drives µP reset input without external components. |
| 2 | GND | Ground reference for all internal comparators and outputs - must be connected to system analog ground plane for accurate threshold sensing. |
| 3 | MROUT | Active-low push-pull manual reset output asserted immediately on MR low; stays low ≥140ms after MR release - used for nonmaskable interrupt (NMI) signaling. |
| 4 | VCC | Main power supply input and primary voltage monitor source - powers internal circuitry and sets comparator reference for VCC reset function. |
| 5 | RSTIN | High-impedance adjustable reset input referenced to 0.63V - connects to center tap of external resistor divider to monitor secondary supply (e.g., 1.2V, 1.5V, 1.8V). |
| 6 | MR | Manual reset input with internal 50kΩ pullup to VCC - pulling low asserts MROUT only; no effect on RESET output per MAX6453 architecture. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent reset paths | Separate VCC reset and MR-triggered MROUT enable simultaneous hard-reset and soft-interrupt functionality without shared control logic. |
| Precision factory-set VCC threshold | 1.575V ±1.5% tolerance ensures accurate monitoring of 1.6V supply rails without calibration or trimming components. |
| Adjustable secondary voltage monitor | RSTIN input with 0.63V reference allows monitoring of any voltage ≥0.63V using two external resistors - supports multi-rail SoC power sequencing. |
| Low 6µA quiescent current | Enables integration into always-on subsystems (e.g., remote wake-up circuits) without measurable impact on standby battery life. |
| Brownout immunity down to 1.0V VCC | Guaranteed RESET assertion validity even as main supply decays to 1.0V - prevents spurious release during final stage of power collapse. |
Applications
| Set-Top Box Power Management | DVD Player System Recovery |
|---|---|
Use Scenario: Power sequencing during cold start and brownout events in digital entertainment devices with multiple voltage domains (3.3V I/O, 1.2V core). IC Role / Device Role / Timing Role: MAX6453UT16S+ monitors both 3.3V rail (via VCC) and 1.2V core (via RSTIN divider) to assert RESET only after both supplies stabilize, while MROUT provides immediate NMI on front-panel button press. Use Value: Prevents corrupted firmware execution during unstable power-up and enables user-initiated data save before full reboot. | Use Scenario: Controlled recovery from transient power dips during disc read operations in portable DVD players powered by Li-ion batteries. IC Role / Device Role / Timing Role: MAX6453UT16S+ detects VCC droop below 1.575V during motor surge load and holds RESET active ≥140ms post-recovery, ensuring clean µP restart without partial instruction execution. Use Value: Eliminates video freeze or audio dropout caused by marginal supply voltage during mechanical actuation. |
| Cable Modem Boot Integrity | MP3 Player Low-Power Supervision |
Use Scenario: Ensuring deterministic boot sequence in DOCSIS-compliant cable modems subject to upstream noise-induced supply fluctuations. IC Role / Device Role / Timing Role: MAX6453UT16S+ uses RSTIN to monitor 1.8V PHY supply and VCC to monitor 3.3V controller rail; RESET asserts only if either fails, preventing partial initialization under RF interference. Use Value: Reduces field-reported "no sync" failures by guaranteeing full hardware reset before firmware attempts MAC layer handshake. | Use Scenario: Maintaining reliable reset behavior in flash-based MP3 players with variable battery voltage (3.0V–4.2V) and ultra-low standby current targets. IC Role / Device Role / Timing Role: MAX6453UT16S+ operates down to 1.0V VCC and draws only 6µA, allowing continuous supervision during 10-day standby without draining coin-cell backup. Use Value: Enables instant-on capability with zero boot-time uncertainty after long storage periods. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6455UT16S+ | Same VCC threshold (1.575V) and RSTIN reference (0.63V), but MR controls both RESET and MROUT outputs with extended setup period (3.36s typ). | Supports combined soft/hard reset from single pushbutton - requires longer press for hard reset, unlike MAX6453UT16S+'s dedicated MROUT-only MR path. | Select MAX6455UT16S+ when interrupt-before-reset functionality is required; MAX6453UT16S+ is preferred when MROUT and RESET must be independently controlled. |
| TPS3808G16DBVR | 1.6V fixed VCC threshold, open-drain outputs, 200ms reset timeout, 1.4µA supply current - lacks adjustable RSTIN input and manual reset output separation. | Designed for simpler single-rail systems; requires external pullups and cannot monitor secondary voltage without additional circuitry. | Choose TPS3808G16DBVR for cost-sensitive, single-supply applications where adjustable monitoring and dual reset outputs are unnecessary. |
Compared with MAX6455UT16S+, the MAX6453UT16S+ provides isolated manual reset signaling without affecting system reset state - critical for NMI-driven data preservation. Against TPS3808G16DBVR, it adds RSTIN-based secondary voltage supervision and push-pull drive, reducing component count in multi-rail consumer designs.
Availability
MAX6453UT16S+ is available at Aetrix Electronics and suitable for set-top boxes, DVD players, and cable/DSL modems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX6453UT16S+ 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, communications, and consumer applications.
The MAX6453–MAX6456 family delivers dual-path µP supervision with independent VCC and manual reset outputs, targeting space-constrained consumer electronics needing reliable power-on sequencing and user-initiated interrupt capability.
FAQ
What is the exact VCC reset threshold voltage for MAX6453UT16S+?
The MAX6453UT16S+ has a factory-set VCC reset threshold of 1.575V, with ±1.5% tolerance over temperature (-40°C to +85°C) and 60ppm/°C tempco. This value is laser-trimmed during production and confirmed in the Electrical Characteristics table of the official datasheet. The "16" in the part number suffix directly encodes this 1.575V threshold per Table 1.
Does MAX6453UT16S+ support monitoring a secondary voltage lower than 1.575V?
Yes, MAX6453UT16S+ supports monitoring secondary voltages as low as 0.63V using the RSTIN pin with an external resistor divider. The internal RSTIN comparator references a precise 0.630V ±1.6% threshold, enabling accurate supervision of 1.2V, 1.5V, or 1.8V rails without additional ICs - a key differentiator from single-threshold supervisors.
How does the manual reset input (MR) affect the RESET output in MAX6453UT16S+?
In MAX6453UT16S+, the MR input affects only the MROUT output and has no effect on the RESET output. Pulling MR low immediately asserts MROUT (for NMI), which remains low for ≥140ms after MR is released. RESET is triggered solely by VCC or RSTIN falling below their thresholds - confirming strict functional separation per the MAX6453 device variant definition.
What is the minimum VCC voltage at which MAX6453UT16S+ guarantees valid RESET assertion?
MAX6453UT16S+ guarantees valid RESET assertion down to VCC = 1.0V, as explicitly stated in the Features list and Electrical Characteristics table. Below 1.0V, output drive strength degrades; however, for applications requiring validity to 0V, a 100kΩ pulldown resistor on the push-pull RESET output is recommended per Figure 6 in the datasheet.
Is MAX6453UT16S+ compatible with lead-free soldering processes?
Yes, MAX6453UT16S+ is lead(Pb)-free and qualified for reflow soldering at +260°C (per JEDEC J-STD-020), matching standard lead-free assembly requirements. The "+" suffix in the part number explicitly denotes RoHS-compliant, lead-free packaging - distinct from leaded versions ending in "-T".
MAX6453UT16S+ 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:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 1.58V, Adj
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-6
MAX6453UT16S+ FAQ
1.How can I place an order for MAX6453UT16S+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6453UT16S+ 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 MAX6453UT16S+ reliable?
The price and inventory of MAX6453UT16S+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6453UT16S+ is usually 5 days.
3.What payment methods are accepted for MAX6453UT16S+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6453UT16S+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6453UT16S+?
MAX6453UT16S+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6453UT16S+ 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 MAX6453UT16S+?
For technical support, including MAX6453UT16S+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6453UT16S+ requirements.
6.How does Aetrix verify that MAX6453UT16S+ is sourced from the original manufacturer or authorized distributors?
All MAX6453UT16S+ 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 MAX6453UT16S+ meets industry standards.
7.What is the process for return or replacement of MAX6453UT16S+?
All MAX6453UT16S+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6453UT16S+, 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 MAX6453UT16S+ part is unused and in its original packaging.
Return procedure for MAX6453UT16S+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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