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Analog Devices Inc./Maxim Integrated MAX6454UT23S+T
- Part No.:
- MAX6454UT23S+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6454UT23S+T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:4,462
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Product details
Overview
MAX6454UT23S+T from Maxim Integrated is a low-power dual-voltage µP supervisor IC with separate active-low open-drain VCC reset and manual reset outputs, factory-set 2.313V VCC reset threshold, adjustable RSTIN input (0.63V reference), 140ms minimum reset timeout, and operation from 1.0V to 5.5V supply - used in consumer electronics for reliable power-on sequencing and brownout recovery.
For engineers reviewing the MAX6454UT23S+T datasheet, MAX6454UT23S+T pinout, MAX6454UT23S+T application, or MAX6454UT23S+T equivalent, this page delivers verified circuit role, exact reset thresholds, manual reset timing behavior, SOT23-6 package mapping, and validated alternative options for soft/hard reset system design.
Technical Context
The MAX6454UT23S+T implements independent monitoring of VCC (2.313V threshold) and an externally adjustable voltage via RSTIN (0.63V comparator reference), with reset assertion triggered when either falls below its threshold. Its manual reset input (MR) controls only the MROUT output - not RESET - enabling non-disruptive NMI-style interrupts without triggering full system reboot.
It features open-drain RESET and MROUT outputs requiring external pullups, guaranteed valid reset operation down to VCC = 1.0V, and immunity to transients ≤20µs at 100mV overdrive. The device draws only 6µA typical supply current at 3.6V and operates across –40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 2.313V (factory-fixed; ensures reliable detection of 2.3V rail brownout) |
| RSTIN Reference Voltage | 0.630V ±15mV (enables precise external voltage monitoring down to 0.63V via resistor divider) |
| Reset Timeout Period | 140ms min (guarantees sufficient processor hold time during power recovery) |
| VCC Supply Current | 6µA typ at 3.6V (minimizes quiescent load on battery- or energy-harvested supplies) |
| Operating Voltage Range | 1.0V to 5.5V (supports valid reset assertion even during deep brownout conditions) |
| Output Type | Active-low open-drain RESET and MROUT (allows flexible logic-level interfacing and wired-OR configuration) |
| MR Input Pullup | 50kΩ internal to VCC (eliminates need for external pullup; enables pushbutton-only manual reset) |
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 open-drain reset output; asserts when VCC < 2.313V or RSTIN < 0.63V; unaffected by MR |
| 2 | GND | Ground reference for all internal comparators and outputs |
| 3 | MROUT | Active-low open-drain manual reset output; asserts immediately on MR low; deasserts 140ms after MR high |
| 4 | VCC | Main supply input (1.0V–5.5V); powers IC and sets primary reset threshold (2.313V) |
| 5 | RSTIN | High-impedance adjustable reset input; referenced to 0.63V internal comparator for secondary rail monitoring |
| 6 | MR | Manual reset input with internal 50kΩ pullup to VCC; falling edge triggers MROUT only (no effect on RESET) |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent reset paths | VCC and RSTIN monitored separately - enables simultaneous primary/secondary rail supervision without shared threshold constraints |
| Factory-trimmed precision threshold | 2.313V ±0.075V (±3.2% tolerance) - eliminates external trimming components and improves system reliability vs. discrete solutions |
| Adjustable secondary monitoring | RSTIN accepts external resistor divider to monitor any voltage ≥0.63V - supports custom rails like 1.2V, 1.8V, or 2.5V without redesign |
| Low-power operation | 6µA typical ICC at 3.6V - extends battery life in portable consumer devices such as MP3 players and modems |
| Transient immunity | Rejects VCC glitches ≤20µs duration at 100mV overdrive - prevents spurious resets during ESD or switching noise events |
Applications
| Set-Top Box Power Management | DVD Player Brownout Recovery |
|---|---|
|
Use Scenario: Monitors 3.3V main supply and 1.2V core rail during cold start and AC dropout. IC Role / Device Role / Timing Role: Dual-threshold supervisor providing synchronized hard reset (RESET) and interrupt-capable soft reset (MROUT) for firmware-safe state preservation. Use Value: Prevents corrupted HDMI handshake or buffer overflow by ensuring microprocessor reset occurs only after both rails stabilize for ≥140ms. |
Use Scenario: Detects rapid 5V supply sag during disc spin-up or laser activation. IC Role / Device Role / Timing Role: VCC supervisor with 2.313V threshold and open-drain outputs driving legacy reset inputs on MPEG decoder and audio DAC. Use Value: Guarantees clean restart without audio pop or video freeze by holding reset until 5V recovers fully and remains stable for 140ms minimum. |
| Cable Modem System Integrity | MP3 Player Low-Voltage Operation |
|
Use Scenario: Supervises 3.3V PHY supply and 1.8V SoC I/O rail in DOCSIS-compliant modems exposed to line-induced transients. IC Role / Device Role / Timing Role: Immune-to-glitch supervisor using RSTIN to monitor 1.8V rail while VCC monitors 3.3V; MR button triggers MROUT for diagnostics without reboot. Use Value: Enables field-service interrupt mode (via MROUT) for log capture before full reset - reducing downtime and support calls. |
Use Scenario: Powers from single-cell Li-ion (3.0V–4.2V) with dynamic load steps causing transient dips. IC Role / Device Role / Timing Role: Low-quiescent-current (6µA) supervisor asserting RESET when battery drops below 2.313V, preventing data corruption during write cycles. Use Value: Extends usable battery runtime by 12% vs. higher-ICC supervisors while maintaining deterministic reset at safe undervoltage margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar µP supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6454UT23S-T | Same electrical specs and pinout, but leaded (Pb-containing) packaging instead of lead-free (+T) | Not suitable for RoHS-compliant production; requires Pb-compatible reflow profile | Select only if legacy assembly process mandates Pb-based soldering and exemption documentation is approved |
| MAX6456UT23S+T | Identical VCC threshold (2.313V) and RSTIN reference, but MR controls both MROUT and RESET outputs with extended setup period (1.68s) | Enables combined soft/hard reset from single pushbutton - unlike MAX6454UT23S+T's MR-isolated MROUT | Choose MAX6456UT23S+T when system requires interrupt-before-reset capability; MAX6454UT23S+T is optimal for dedicated NMI-only use |
Compared with MAX6454UT23S+T, MAX6454UT23S-T lacks RoHS compliance and requires different thermal profiling, while MAX6456UT23S+T adds MR-controlled dual-output functionality at the cost of losing independent reset control - making MAX6454UT23S+T the preferred choice for designs needing isolated manual interrupt signaling without affecting system reboot logic.
Availability
MAX6454UT23S+T is available at Aetrix Electronics and suitable for set-top boxes, DVD players, and cable modems requiring stable component supply, RoHS-compliant packaging, and guaranteed long-term industrial temperature support.
Supply support for MAX6454UT23S+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, with emphasis on high-reliability, low-power, and small-footprint solutions.
The MAX6453–MAX6456 family was engineered specifically for dual-rail microprocessor supervision in space-constrained consumer and industrial systems - delivering independent reset control, adjustable monitoring, and robust transient immunity in SOT23-6.
FAQ
What is the exact VCC reset threshold voltage for MAX6454UT23S+T?
The MAX6454UT23S+T has a factory-trimmed VCC reset threshold of 2.313V, with a guaranteed range of 2.25V to 2.38V at +25°C and ±60ppm/°C tempco. This value is fixed by the "23" suffix per Table 1 and applies across the full –40°C to +85°C operating range without external calibration.
Does the manual reset input (MR) affect the RESET output in MAX6454UT23S+T?
No - in the MAX6454UT23S+T, the MR input controls only the MROUT output. The RESET output is asserted solely by VCC or RSTIN falling below their respective thresholds and is completely independent of MR state. This isolation is a defining feature distinguishing MAX6454UT23S+T from MAX6455/MAX6456 variants.
What is the minimum VCC voltage required for valid RESET output operation in MAX6454UT23S+T?
The MAX6454UT23S+T guarantees valid RESET output logic state down to VCC = 1.0V. Below 1.0V, current-sinking capability degrades; for applications requiring asserted RESET down to 0V, a 100kΩ pulldown resistor must be added to the RESET line - though this is incompatible with open-drain configuration and applies only to push-pull variants.
Can MAX6454UT23S+T monitor a 1.2V supply using the RSTIN pin?
Yes - the RSTIN pin uses a 0.630V internal reference, so a resistor divider (e.g., R1 = 220kΩ, R2 = 250kΩ) scales the 1.2V supply to ~0.63V at RSTIN. The MAX6454UT23S+T will assert RESET when the divided voltage falls below 0.630V, corresponding to ~1.2V at the source, enabling precise secondary rail supervision.
What is the reset timeout period specification for MAX6454UT23S+T?
The MAX6454UT23S+T specifies a minimum reset timeout period of 140ms after all monitored voltages exceed their thresholds. Typical timeout is 210ms, and maximum is 280ms across temperature and supply variations - ensuring sufficient hold time for microprocessors to complete power-up initialization sequences reliably.
MAX6454UT23S+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 2.313V, 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
MAX6454UT23S+T FAQ
1.How can I place an order for MAX6454UT23S+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6454UT23S+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 MAX6454UT23S+T reliable?
The price and inventory of MAX6454UT23S+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6454UT23S+T is usually 5 days.
3.What payment methods are accepted for MAX6454UT23S+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6454UT23S+T transactions.
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4.How is shipping managed for MAX6454UT23S+T?
MAX6454UT23S+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6454UT23S+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 MAX6454UT23S+T?
For technical support, including MAX6454UT23S+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6454UT23S+T requirements.
6.How does Aetrix verify that MAX6454UT23S+T is sourced from the original manufacturer or authorized distributors?
All MAX6454UT23S+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 MAX6454UT23S+T meets industry standards.
7.What is the process for return or replacement of MAX6454UT23S+T?
All MAX6454UT23S+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6454UT23S+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 MAX6454UT23S+T part is unused and in its original packaging.
Return procedure for MAX6454UT23S+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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