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Analog Devices Inc./Maxim Integrated MAX6453UT23S+
- Part No.:
- MAX6453UT23S+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6453UT23S+.pdf
- Description:
- MAX6453 UP SUPERVISORS WITH SEPA
- Quantity:
- Payment:
- Shipping:
Inventory:1,638
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Product details
Overview
MAX6453UT23S+ from Maxim Integrated is a dual-output, low-power µP supervisor IC with separate VCC reset and manual reset outputs, factory-set 2.313V 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 soft-interrupt (MROUT) and hard-reboot (RESET) sequencing in embedded power management.
For engineers reviewing the MAX6453UT23S+ datasheet, MAX6453UT23S+ pinout, MAX6453UT23S+ application, or MAX6453UT23S+ equivalent, this page delivers verified electrical parameters, exact pin functions, real-world use cases in consumer and industrial systems, and two confirmed alternative parts with documented functional and timing differences.
Technical Context
The MAX6453UT23S+ implements independent monitoring paths: a precision 2.313V ±1.5% VCC reset comparator and a high-impedance 0.63V RSTIN input for external voltage divider-based threshold setting. Its MR input controls only MROUT - not RESET - enabling nonmaskable interrupt generation without triggering full system reboot.
It features guaranteed valid reset assertion down to VCC = 1.0V, 6µA typical supply current at 3.6V, and immunity to transients ≤20µs when VCC drops 100mV below threshold. The 140ms min reset timeout is temperature-stable (±3% over -40°C to +85°C), and both outputs are active-low push-pull with VOL ≤0.3V at ISINK = 1.2mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 2.313V ±1.5% - factory-trimmed for reliable detection of 2.5V rail brownout |
| RSTIN Threshold | 0.630V ±1.6% - enables monitoring of secondary rails as low as 0.63V via external resistor divider |
| Reset Timeout Period | 140ms min - ensures microprocessor reset pulse meets ARM/Intel minimum hold time requirements |
| Supply Current | 6µA typ at 3.6V - supports battery-backed systems with multi-year standby life |
| Operating Voltage Range | 1.0V to 5.5V - guarantees functional reset output even during deep brownout conditions |
| Output Type | Active-low push-pull RESET and MROUT - eliminates need for external pullups, simplifies PCB layout |
| MR Input Pullup | 50kΩ internal to VCC - allows direct connection of momentary switch to GND without external components |
Pinout & Package
SOT23-6 package (U6-1 land pattern, 2.9mm × 1.6mm × 1.1mm height), RoHS-compliant lead(Pb)-free construction marked "ABOH".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low push-pull reset output | Drives µP reset pin directly; asserts low on VCC/RSTIN undervoltage or MR long-press (not applicable to MAX6453) |
| 2 - GND | Ground reference | Common return for all internal comparators and output drivers; must be low-impedance connection |
| 3 - MROUT | Active-low push-pull manual reset output | Asserts immediately on MR low; remains low 140ms after MR release - used for NMI or data-save interrupt |
| 4 - VCC | Main power supply input | Supplies internal circuitry and sets reference for VCC monitor; operates down to 1.0V with valid RESET |
| 5 - RSTIN | Adjustable reset input | High-Z (±25nA) comparator input referenced to 0.63V - connects to center tap of external resistor divider |
| 6 - MR | Manual reset input | Internal 50kΩ pullup to VCC; falling edge triggers MROUT only - no effect on RESET output |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent reset outputs | Separate RESET (system reboot) and MROUT (NMI/interrupt) enable staged recovery without firmware dependency |
| Factory-set 2.313V VCC threshold | Eliminates external resistor network for 2.5V rail monitoring - reduces BOM count and layout area |
| 0.63V RSTIN reference | Supports precise monitoring of sub-1V core supplies (e.g., 1.2V, 1.0V, 0.9V) using high-value resistors (<1µA divider current) |
| 140ms min reset timeout | Guarantees compliance with processor reset timing specs across full temperature range (-40°C to +85°C) |
| 6µA supply current | Enables integration into always-on subsystems (e.g., RTC, wake-on-LAN) without compromising battery life |
Applications
| Set-Top Box Power Sequencing | DVD Player Brownout Recovery |
|---|---|
Use Scenario: Coordinated startup of main SoC, video decoder, and HDMI PHY after AC power restoration. IC Role / Device Role / Timing Role: MAX6453UT23S+ monitors 3.3V I/O rail (VCC) and 1.2V core rail (RSTIN); asserts RESET only after both stabilize for 140ms. Use Value: Prevents partial initialization that causes HDMI handshake failure or video corruption during marginal line voltage. |
Use Scenario: Recovery from brief AC dropout during disc spin-up causing 2.5V rail sag. IC Role / Device Role / Timing Role: MAX6453UT23S+ detects 2.313V threshold breach on 2.5V rail and holds RESET low for 140ms post-recovery. Use Value: Ensures DVD controller completes sector read retry before resuming playback - avoids buffer underrun errors. |
| Industrial PLC Watchdog Interface | Medical Infusion Pump Safety Monitor |
Use Scenario: External watchdog timer asserts MR to signal firmware hang; system enters safe state without full reboot. IC Role / Device Role / Timing Role: MAX6453UT23S+ drives MROUT (NMI) on MR low, allowing firmware to log error and disable actuators within 140ms. Use Value: Meets IEC 61508 SIL-2 requirement for fail-safe response without disrupting real-time control loop timing. |
Use Scenario: Dual-rail monitoring of 5V logic supply and 3.3V sensor interface supply in battery-operated infusion pump. IC Role / Device Role / Timing Role: MAX6453UT23S+ uses VCC=5V and RSTIN divider to monitor both rails; asserts RESET if either falls below threshold. Use Value: Guarantees pump motor shutdown within 140ms of power anomaly - satisfies FDA Class II device fault-response timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar µP supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6455UT23S+ | Same 2.313V VCC threshold and SOT23-6 package, but MR controls both MROUT and RESET; includes 3.36s extended setup period for soft/hard reset combination | Supports single-button interrupt-then-reboot workflow; requires firmware to distinguish short vs. long press | Select MAX6455UT23S+ only if system design requires MR-triggered hard reset - MAX6453UT23S+ provides isolated MROUT for pure interrupt use |
| TPS3808G125DBVR | 2.5V fixed VCC threshold (not 2.313V), open-drain outputs, 200ms timeout, 1.4µA quiescent current - no adjustable RSTIN input | Lacks secondary rail monitoring capability; requires external pullups; lower power but less flexible voltage coverage | Choose TPS3808G125DBVR for ultra-low-power 2.5V-only applications where RSTIN functionality is unnecessary |
Compared with MAX6455UT23S+, the MAX6453UT23S+ offers strict separation of interrupt (MROUT) and reboot (RESET) paths - critical for safety-critical systems requiring deterministic NMI handling without unintended resets. Against TPS3808G125DBVR, it trades lower quiescent current for essential dual-threshold monitoring and push-pull drive.
Availability
MAX6453UT23S+ is available at Aetrix Electronics and suitable for set-top boxes, DVD players, industrial PLCs, medical infusion pumps, and cable modems requiring stable component supply with guaranteed long-term manufacturability.
Supply support for MAX6453UT23S+ 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 management, sensing, and interface applications in industrial, medical, and communications systems.
The MAX6453–MAX6456 family was engineered specifically for dual-rail microprocessor supervision with independent interrupt and reboot outputs - addressing the need for deterministic, low-power reset sequencing in resource-constrained embedded platforms.
FAQ
What is the exact VCC reset threshold voltage for MAX6453UT23S+?
The MAX6453UT23S+ has a factory-trimmed VCC reset threshold of 2.313V with ±1.5% tolerance over -40°C to +85°C. This value is confirmed in Table 1 of the datasheet and corresponds to the "23" suffix in the part number. The threshold is laser-trimmed during production and does not require external calibration.
Does MAX6453UT23S+ support monitoring a secondary voltage below 1V?
Yes, the MAX6453UT23S+ supports monitoring secondary voltages down to 0.63V using the RSTIN pin. By connecting an external resistor divider between the monitored rail and GND, with RSTIN at the center tap, the device triggers reset when the divided voltage falls below its internal 0.63V comparator threshold - enabling precise supervision of 1.2V, 1.0V, or 0.9V rails.
How does the manual reset input (MR) affect the RESET output in MAX6453UT23S+?
In the MAX6453UT23S+, the MR input affects only the MROUT output - it has no effect on the RESET output. When MR is pulled low, MROUT asserts immediately and remains low for 140ms after MR is released. RESET is controlled solely by VCC and RSTIN voltage levels, ensuring clean separation between interrupt and system reboot functions.
What is the supply current consumption of MAX6453UT23S+ at 3.3V?
The MAX6453UT23S+ draws 6µA typical supply current at VCC = 3.3V and TA = +25°C, with a maximum of 16µA over the full -40°C to +85°C temperature range. This ultra-low quiescent current enables integration into battery-powered devices where multi-year shelf life is required, such as remote sensors or medical wearables.
Is MAX6453UT23S+ compatible with 1.8V microcontrollers?
Yes, the MAX6453UT23S+ is fully operational down to VCC = 1.0V and guarantees valid RESET output logic states at that level. Its push-pull outputs drive low to ≤0.3V at ISINK = 1.2mA, ensuring solid logic-low assertion for 1.8V µCs with VIH thresholds as low as 1.26V (70% of VCC). No level-shifting circuitry is needed.
MAX6453UT23S+ 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:
- 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-23-6
MAX6453UT23S+ FAQ
1.How can I place an order for MAX6453UT23S+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6453UT23S+ 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+ reliable?
The price and inventory of MAX6453UT23S+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6453UT23S+ is usually 5 days.
3.What payment methods are accepted for MAX6453UT23S+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6453UT23S+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6453UT23S+?
MAX6453UT23S+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6453UT23S+ 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+?
For technical support, including MAX6453UT23S+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6453UT23S+ requirements.
6.How does Aetrix verify that MAX6453UT23S+ is sourced from the original manufacturer or authorized distributors?
All MAX6453UT23S+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX6453UT23S+?
All MAX6453UT23S+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6453UT23S+, 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+ part is unused and in its original packaging.
Return procedure for MAX6453UT23S+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6453UT23S+ Tags
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MIC826SYMT-TR
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APX803L20-29SA-7
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