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Analog Devices Inc./Maxim Integrated MAX6453UT23S+T
- Part No.:
- MAX6453UT23S+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6453UT23S+T.pdf
- Description:
- IC MPU SUPER 2.313V SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:6,495
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Product details
Overview
MAX6453UT23S+T from Maxim Integrated is a low-power, dual-voltage µP supervisor IC with separate VCC reset and manual reset outputs, designed for soft-system interrupt (MROUT) and hard-system reboot (RESET) functions. It features a factory-set 2.313V VCC reset threshold, 0.63V adjustable RSTIN input, 140ms minimum reset timeout, active-low push-pull outputs, and operates across -40°C to +85°C in SOT23-6.
For engineers reviewing the MAX6453UT23S+T datasheet, MAX6453UT23S+T pinout, MAX6453UT23S+T application, or MAX6453UT23S+T equivalent, this device supports precise power-monitoring in space-constrained consumer and industrial systems requiring independent reset control paths and guaranteed reset validity down to VCC = 1.0V.
Technical Context
The MAX6453UT23S+T implements two independent reset comparators: one monitors VCC against a fixed 2.313V threshold, while the other monitors RSTIN against a 0.63V reference via external resistor divider. Its MR input controls only MROUT - not RESET - enabling dedicated nonmaskable interrupt signaling without triggering full system reboot.
This variant uses push-pull output architecture for both RESET and MROUT, eliminating need for external pullups, and guarantees valid logic states over VCC = 1.0V to 5.5V. The 140ms minimum reset timeout and 3.36s extended MR setup period (suffix 'S') are internally timed and temperature-stable.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 2.313V ±1.5% - precisely monitors 2.3V-class supply rails without external calibration |
| RSTIN Threshold | 0.630V ±20mV - enables monitoring of secondary voltages as low as 0.63V using external resistor divider |
| Reset Timeout Period | 140ms min - ensures microprocessor reset pulse meets minimum assertion time for reliable boot initialization |
| Supply Current | 6µA typ at 3.6V - ultra-low quiescent current preserves battery life in always-on monitoring applications |
| Operating Voltage Range | 1.0V to 5.5V - supports valid reset generation even during deep brownout conditions down to 1.0V VCC |
| Output Type | Active-low push-pull - drives RESET and MROUT directly without external pullup resistors |
| MR Setup Period | 3.36s typ - allows single pushbutton to initiate interrupt-only (short press) vs. full reset (long press) |
Pinout & Package
Package: SOT23-6, surface-mount, lead(Pb)-free (indicated by '+T' suffix), -40°C to +85°C operating range.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-low push-pull output asserting when VCC < 2.313V or RSTIN < 0.63V; remains low ≥140ms after recovery |
| 2 | GND | Ground reference for all internal circuitry and comparator inputs |
| 3 | MROUT | Active-low push-pull manual reset output asserting immediately on MR low; deasserts ≥140ms after MR high |
| 4 | VCC | Main power supply input and primary voltage monitor source; powers internal circuitry and defines logic levels |
| 5 | RSTIN | High-impedance adjustable reset input; threshold set externally via resistor divider to monitor secondary rail down to 0.63V |
| 6 | MR | Manual reset input with internal 50kΩ pullup to VCC; initiates MROUT only (no effect on RESET) |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent reset paths | Separate VCC and RSTIN comparators enable simultaneous monitoring of primary and secondary power rails |
| Guaranteed reset validity down to VCC = 1.0V | Ensures deterministic reset behavior during severe brownout, critical for fail-safe embedded systems |
| Immunity to short voltage transients | Rejects ≤20µs transients falling 100mV below threshold - prevents false resets from noise or coupling |
| Extended MR setup period (3.36s) | Enables single-button implementation of NMI interrupt (short press) and full system reset (long press) |
| Low 6µA supply current | Minimizes standby power draw in battery-powered devices such as portable medical instruments and remote sensors |
Applications
| Set-Top Boxes | DVD Players |
|---|---|
Use Scenario: Power sequencing and fault recovery during HDMI hot-plug events or firmware updates. IC Role / Device Role / Timing Role: Dual-output supervisor providing immediate NMI interrupt (MROUT) for data save, followed by controlled hard reset (RESET) if recovery fails. Use Value: Prevents corrupted firmware writes and user data loss by decoupling interrupt timing from full reset timing. |
Use Scenario: Stable operation during AC adapter fluctuations and thermal shutdown cycles. IC Role / Device Role / Timing Role: Monitors both 3.3V I/O rail (VCC) and 1.2V core rail (RSTIN) to assert reset only when both supplies are stable. Use Value: Eliminates spurious reboots caused by transient dips on one rail while the other remains nominal. |
| Cable/DSL Modems | Medical Devices |
Use Scenario: Remote firmware update resilience under unstable PoE or wall-adapter input. IC Role / Device Role / Timing Role: Uses MR input for field-service-initiated safe reboot; RESET output holds processor in reset until all rails exceed thresholds. Use Value: Enables certified remote maintenance without risk of partial initialization or memory corruption. |
Use Scenario: Battery-backed patient monitoring equipment requiring fail-safe power-up and brownout response. IC Role / Device Role / Timing Role: Guarantees valid RESET down to VCC = 1.0V and provides low-current supervision for multi-year battery life. Use Value: Meets IEC 62304 safety requirements for deterministic reset behavior during end-of-battery discharge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar µP supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6455UT23S+T | MR input controls both MROUT and RESET; includes extended setup timeout for combined soft/hard reset | Supports single-button interrupt-and-reset functionality; requires different MR timing logic | Select when system needs MR-triggered full reset capability - MAX6453UT23S+T does not assert RESET on MR |
| TPS3808G33DBVR | Single-output supervisor (RESET only); 3.3V fixed threshold; no manual reset output or adjustable RSTIN | Lacks MROUT path and secondary voltage monitoring; simpler integration but less flexible | Choose for cost-sensitive designs needing only primary rail monitoring and no interrupt-before-reset feature |
Compared with MAX6455UT23S+T, the MAX6453UT23S+T provides isolated manual reset signaling without affecting system reboot - ideal for NMI-driven data preservation. Versus TPS3808G33DBVR, it adds dual-rail monitoring and interrupt capability at slightly higher BOM count but greater functional safety coverage.
Availability
MAX6453UT23S+T is available at Aetrix Electronics and suitable for set-top boxes, DVD players, and cable/DSL modems requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for MAX6453UT23S+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 and mixed-signal ICs for power, sensing, and interface applications in industrial, medical, and communications markets.
The MAX6453–MAX6456 family delivers dual-path µP supervision with independent reset control, targeting space-constrained consumer and industrial systems needing robust power-fail detection and user-initiated interrupt capability.
FAQ
What is the exact VCC reset threshold voltage for MAX6453UT23S+T?
The MAX6453UT23S+T has a factory-set VCC reset threshold of 2.313V, with ±1.5% tolerance over temperature. This value is fixed and unadjustable - confirmed in Table 1 of the datasheet where suffix '23' corresponds to 2.313V. The threshold remains stable across the full -40°C to +85°C operating range with 60ppm/°C tempco.
Does MAX6453UT23S+T assert the RESET output when the manual reset (MR) input is pulled low?
No, the MAX6453UT23S+T does not assert the RESET output in response to MR. Its MR input controls only the MROUT output - RESET is asserted solely by VCC or RSTIN falling below their respective thresholds. This isolation is a defining feature of the MAX6453/MAX6454 variants, unlike MAX6455/MAX6456 which link MR to both outputs.
What is the function of the RSTIN pin on MAX6453UT23S+T?
The RSTIN pin on MAX6453UT23S+T is a high-impedance input to an internal 0.63V comparator, used to monitor a secondary system voltage via an external resistor divider. It enables reset assertion when that derived voltage falls below the calculated threshold - supporting monitoring of rails as low as 0.63V without additional components.
What package type and RoHS status does MAX6453UT23S+T use?
The MAX6453UT23S+T uses a 6-pin SOT23 package (package code U6-1) and is lead(Pb)-free, indicated by the '+T' suffix per Maxim's ordering convention. It meets RoHS Directive 2011/65/EU and is rated for operation from -40°C to +85°C with 2500-piece tape-and-reel standard packaging.
How does the 3.36s MR setup period affect system design with MAX6453UT23S+T?
The 3.36s MR setup period (denoted by suffix 'S') has no functional effect on MAX6453UT23S+T because its MR input controls only MROUT - not RESET. That timing parameter applies exclusively to MAX6455/MAX6456. For MAX6453UT23S+T, MR asserts MROUT immediately upon being pulled low, with no delay or setup requirement.
MAX6453UT23S+T 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:
- 2.313V, Adj
- Output:
- Push-Pull, Totem Pole
- 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
MAX6453UT23S+T FAQ
1.How can I place an order for MAX6453UT23S+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6453UT23S+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 MAX6453UT23S+T reliable?
The price and inventory of MAX6453UT23S+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6453UT23S+T is usually 5 days.
3.What payment methods are accepted for MAX6453UT23S+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6453UT23S+T transactions.
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4.How is shipping managed for MAX6453UT23S+T?
MAX6453UT23S+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6453UT23S+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 MAX6453UT23S+T?
For technical support, including MAX6453UT23S+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6453UT23S+T requirements.
6.How does Aetrix verify that MAX6453UT23S+T is sourced from the original manufacturer or authorized distributors?
All MAX6453UT23S+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 MAX6453UT23S+T meets industry standards.
7.What is the process for return or replacement of MAX6453UT23S+T?
All MAX6453UT23S+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6453UT23S+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 MAX6453UT23S+T part is unused and in its original packaging.
Return procedure for MAX6453UT23S+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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