My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6453UT46S+T
- Part No.:
- MAX6453UT46S+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6453UT46S+T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6453UT46S+T from Maxim Integrated is a low-power dual-voltage microprocessor supervisor IC with separate VCC reset and manual reset outputs, factory-set 4.625V 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 soft-interrupt control in consumer electronics power rails.
For engineers reviewing the MAX6453UT46S+T datasheet, MAX6453UT46S+T pinout, MAX6453UT46S+T application, or MAX6453UT46S+T equivalent, this page delivers verified circuit role, exact reset thresholds, manual reset timing behavior, output drive type, and real-world implementation constraints for brownout immunity and interrupt-before-reset functionality.
Technical Context
The MAX6453UT46S+T implements independent monitoring of VCC (4.625V threshold) and an externally adjustable voltage via RSTIN (0.63V comparator reference), with separate assertion paths for RESET (VCC/RSTIN-triggered) and MROUT (MR-triggered only). Its MR input controls only MROUT-not RESET-enabling nonmaskable interrupt generation without system reboot.
It features push-pull active-low outputs, guaranteed valid RESET down to VCC = 1.0V, 6µA typical supply current at 3.6V, and immunity to transients ≤20µs when VCC drops 100mV below threshold-supporting robust operation in noisy consumer power environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 4.625V ±0.125V - precisely monitors 4.6V nominal supply rails during startup/brownout |
| RSTIN Threshold | 0.630V ±0.015V - enables external resistor-divider setup for secondary voltage monitoring down to 0.63V |
| Reset Timeout Period | 140ms min - ensures µP remains held in reset long enough for stable power recovery |
| Supply Current | 6µA typ at 3.6V - ultra-low quiescent draw suitable for battery-backed or always-on systems |
| Output Type | Active-low push-pull - eliminates need for external pullup resistors on RESET and MROUT |
| Operating Temp Range | -40°C to +85°C - qualified for industrial and extended-temperature consumer equipment |
| Reset Assertion Voltage | Valid down to VCC = 1.0V - guarantees correct logic state even during deep undervoltage conditions |
Pinout & Package
Package: SOT23-6, surface-mount, lead(Pb)-free (indicated by "+T" suffix), 6-pin footprint per land pattern 90-0175.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-low push-pull reset output asserted when VCC or RSTIN falls below threshold; unaffected by MR |
| 2 | GND | Ground reference for all internal comparators and outputs |
| 3 | MROUT | Active-low push-pull manual reset output asserted immediately on MR low; deasserts 140ms after MR high |
| 4 | VCC | Main power supply input and primary voltage monitor source (4.625V threshold) |
| 5 | RSTIN | High-impedance adjustable reset input; connects to resistor divider to set secondary voltage threshold |
| 6 | MR | Manual reset input with internal 50kΩ pullup to VCC; controls MROUT only (no effect on RESET) |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent reset paths | Separate VCC-triggered RESET and MR-triggered MROUT enable simultaneous hard-reset and NMI interrupt capability |
| Factory-trimmed precision threshold | 4.625V VCC reset threshold with ±0.125V tolerance ensures accurate 4.6V rail monitoring without calibration |
| Adjustable secondary monitoring | RSTIN comparator referenced to 0.63V allows monitoring of any voltage ≥0.63V using external resistor divider |
| Brownout transient immunity | Rejects <20µs glitches at 100mV overdrive - prevents spurious resets during switching noise or load transients |
| Low-voltage reset validity | Guaranteed RESET logic state down to VCC = 1.0V - supports safe operation during deep undervoltage events |
Applications
| Set-Top Box Power Management | DVD Player System Reset |
|---|---|
Use Scenario: Monitors 4.6V main supply and 1.2V core rail during cold start and AC dropout. IC Role / Device Role / Timing Role: Dual-output supervisor provides immediate NMI (MROUT) on button press and full reboot (RESET) on sustained fault. Use Value: Prevents corrupted firmware execution during unstable 4.6V rail transitions while enabling user-initiated soft recovery. | Use Scenario: Ensures clean boot sequence after power cycling or brownout in optical drive subsystem. IC Role / Device Role / Timing Role: VCC reset asserts on 4.6V rail collapse; MROUT signals interrupt to save disc buffer state before shutdown. Use Value: Eliminates data loss from abrupt power loss by triggering controlled buffer flush prior to hard reset. |
| Cable Modem Boot Integrity | MP3 Player Low-Power Supervision |
Use Scenario: Validates 4.6V analog front-end supply and 0.9V digital core supply before PHY initialization. IC Role / Device Role / Timing Role: RESET holds MCU in reset until both supplies stabilize; RSTIN monitors 0.9V core via 250kΩ/100kΩ divider. Use Value: Guarantees synchronized release of multiple voltage domains to prevent latch-up or configuration errors. | Use Scenario: Supervises 4.6V battery rail and 1.8V codec supply in portable audio playback device. IC Role / Device Role / Timing Role: Push-pull outputs drive MCU reset and audio subsystem interrupt directly-no pullups needed. Use Value: Reduces BOM count and PCB area by eliminating two external pullup resistors in space-constrained design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6455UT46S+T | MR input controls both MROUT and RESET; includes extended setup timeout (3.36s typ) for soft/hard reset combination | Enables single-button interrupt-then-reboot workflow; not suitable where MR must affect MROUT only | Select MAX6455UT46S+T only if dual-path MR control (interrupt + reboot) is required |
| TPS3808G33DBVR | Single VDD monitor (3.3V threshold), open-drain RESET, no manual reset input or RSTIN pin | Lacks dual-voltage monitoring, adjustable threshold, and dedicated MROUT-cannot replace interrupt-before-reset function | Use TPS3808G33DBVR only for basic 3.3V supply supervision without manual control or secondary rail monitoring |
Compared with MAX6455UT46S+T, the MAX6453UT46S+T provides isolated MR-to-MROUT control ideal for NMI-only use cases; versus TPS3808G33DBVR, it adds critical dual-rail supervision, adjustable threshold, and push-pull drive-making it irreplaceable in designs requiring coordinated soft/hard reset separation.
Availability
MAX6453UT46S+T is available at Aetrix Electronics and suitable for set-top boxes, DVD players, and cable modems requiring stable component supply, precise 4.6V rail monitoring, and deterministic interrupt-before-reset behavior.
Supply support for MAX6453UT46S+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, consumer, and communications markets.
The MAX6453–MAX6456 family targets cost-sensitive, space-constrained consumer electronics requiring dual-voltage supervision with independent reset and interrupt outputs-optimized for reliability in variable-temperature, noise-prone environments.
FAQ
What is the exact VCC reset threshold voltage for MAX6453UT46S+T?
The MAX6453UT46S+T has a factory-set VCC reset threshold of 4.625V, with a guaranteed range of 4.50V to 4.75V across temperature (-40°C to +85°C). This value is fixed by the "46" suffix in the part number per Table 1 of the datasheet and applies specifically to the MAX6453UT46S+T variant-not inferred from other MAX6453 versions.
Does the MR input of MAX6453UT46S+T affect the RESET output?
No, the MR input of MAX6453UT46S+T affects only the MROUT output. The RESET output is triggered solely by VCC or RSTIN falling below their respective thresholds and remains completely independent of MR state. This isolation is a defining feature of the MAX6453/MAX6454 series and is explicitly confirmed in the General Description and Pin Description sections of the MAX6453–MAX6456 datasheet.
What output type does MAX6453UT46S+T use for RESET and MROUT?
The MAX6453UT46S+T uses active-low push-pull outputs for both RESET and MROUT. This is confirmed by the "Push-Pull Output" column in Table 3 (Standard Versions Table) and the functional description stating "MAX6453 … RESET changes from high to low … For open-drain outputs, connect to an external pullup resistor"-a conditional clause that does not apply to MAX6453UT46S+T since it is not an open-drain variant.
Can MAX6453UT46S+T monitor a secondary voltage lower than 1.0V?
Yes, MAX6453UT46S+T can monitor secondary voltages as low as 0.63V using the RSTIN pin. The internal RSTIN comparator has a fixed 0.630V threshold, and an external resistor divider scales the target voltage to match this reference. For example, to monitor a 1.23V rail, a 250kΩ/100kΩ divider yields 0.63V at RSTIN when the monitored voltage is 1.23V-enabling precise sub-1V supervision without additional components.
What is the minimum reset timeout period for MAX6453UT46S+T?
The minimum reset timeout period for MAX6453UT46S+T is 140ms, as specified in the Electrical Characteristics table under "Reset Timeout Period (tRP)" with MIN = 140ms. This duration is guaranteed across the full operating temperature range (-40°C to +85°C) and ensures sufficient hold time for microprocessors to complete power stabilization before release from reset.
MAX6453UT46S+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:
- 4.625V, 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
MAX6453UT46S+T FAQ
1.How can I place an order for MAX6453UT46S+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6453UT46S+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 MAX6453UT46S+T reliable?
The price and inventory of MAX6453UT46S+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6453UT46S+T is usually 5 days.
3.What payment methods are accepted for MAX6453UT46S+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6453UT46S+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6453UT46S+T?
MAX6453UT46S+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6453UT46S+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 MAX6453UT46S+T?
For technical support, including MAX6453UT46S+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6453UT46S+T requirements.
6.How does Aetrix verify that MAX6453UT46S+T is sourced from the original manufacturer or authorized distributors?
All MAX6453UT46S+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 MAX6453UT46S+T meets industry standards.
7.What is the process for return or replacement of MAX6453UT46S+T?
All MAX6453UT46S+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6453UT46S+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 MAX6453UT46S+T part is unused and in its original packaging.
Return procedure for MAX6453UT46S+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6453UT46S+T 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…
