My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6454UT29S-T
- Part No.:
- MAX6454UT29S-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6454UT29S-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:9,835
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6454UT29S-T from Maxim Integrated is a low-power dual-voltage microprocessor supervisor IC with separate active-low open-drain VCC reset and manual reset outputs. It monitors primary supply (VCC) at 2.925V ±0.075V and secondary supply via adjustable RSTIN input down to 0.63V, delivers 140ms min reset timeout, consumes only 6µA typical supply current, and operates across -40°C to +85°C for use in consumer electronics power sequencing and brownout protection.
For engineers reviewing the MAX6454UT29S-T datasheet, MAX6454UT29S-T pinout, MAX6454UT29S-T application, or MAX6454UT29S-T equivalent, this page provides verified functional identity, SOT23-6 package mapping, confirmed pin roles, real-world timing behavior (140ms reset timeout, 3.36s MR setup period), and validated alternative options for soft/hard reset system design.
Technical Context
The MAX6454UT29S-T implements independent monitoring paths: one precision factory-set comparator for VCC (2.925V threshold) and a high-impedance adjustable comparator for RSTIN (0.63V reference). Its MR input controls only MROUT - not RESET - enabling non-disruptive NMI-style interrupts without triggering full system reboot.
Reset assertion occurs when either VCC falls below 2.925V or RSTIN drops below its externally set threshold; both outputs remain asserted for ≥140ms after recovery. The device guarantees valid RESET output down to VCC = 1.0V and features 60ppm/°C reset threshold tempco and 2.5mV RSTIN hysteresis for noise immunity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 2.925V ±0.075V - precisely sets brownout detection point for 3.3V rail monitoring |
| RSTIN Threshold | 0.630V ±0.020V - enables external resistor-divider configuration for secondary voltage monitoring |
| Reset Timeout Period | 140ms minimum - ensures sufficient processor reset hold time per JEDEC JESD84-A44 |
| Supply Current | 6µA typical at 3.6V - supports battery-backed or ultra-low-power always-on supervision |
| Operating Temperature | -40°C to +85°C - qualified for industrial and consumer equipment environments |
| MR Setup Period | 3.36s typical - allows pushbutton-based interrupt-before-reset functionality |
| Output Type | Active-low open-drain RESET and MROUT - supports flexible logic-level interfacing and wired-OR configurations |
Pinout & Package
Package: SOT23-6, surface-mount, lead(Pb)-free compatible (ordered as MAX6454UT29S+T), 6-pin footprint per land pattern 90-0175.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-low open-drain reset output - connects to µP reset input; requires external pullup |
| 2 | GND | Ground reference - common return path for all internal circuitry and comparators |
| 3 | MROUT | Active-low open-drain manual reset output - asserts immediately on MR low; used for NMI or subsystem reset |
| 4 | VCC | Main supply input - powers IC and serves as primary monitored voltage source |
| 5 | RSTIN | Adjustable reset input - high-impedance node for external resistor divider to monitor secondary rail |
| 6 | MR | Manual reset input - internally pulled up to VCC (50kΩ); falling edge triggers MROUT only |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent reset paths | VCC and RSTIN monitoring operate separately - enables simultaneous primary/secondary rail supervision without coupling |
| Factory-trimmed VCC threshold | 2.925V ±0.075V tolerance - eliminates need for external calibration in 3.3V systems |
| Adjustable secondary monitoring | RSTIN accepts 0.63V reference with >100MΩ input impedance - supports monitoring of sub-1V rails with minimal divider current |
| Glitch-immune reset logic | Rejects transients ≤20µs at 100mV overdrive - prevents spurious resets during switching noise events |
| Valid reset at low VCC | Guaranteed RESET assertion down to VCC = 1.0V - ensures reliable operation during deep brownout conditions |
Applications
| Set-Top Boxes | DVD Players |
|---|---|
Use Scenario: Power sequencing during cold start and recovery from HDMI hot-plug events. IC Role / Device Role / Timing Role: Dual-output supervisor providing hard reset (RESET) for SoC initialization and soft interrupt (MROUT) for firmware-triggered state save before reboot. Use Value: Prevents corrupted firmware execution by ensuring 140ms minimum reset pulse width while allowing user-initiated data preservation via 3.36s MR hold. | Use Scenario: Brownout recovery during AC adapter fluctuations or battery sag in portable DVD players. IC Role / Device Role / Timing Role: Monitors both 3.3V I/O rail (VCC = 2.925V threshold) and 1.2V core rail (via RSTIN divider) to trigger coordinated reset. Use Value: Eliminates need for two discrete supervisors - reduces BOM count and PCB area while maintaining independent fault detection. |
| Cable/DSL Modems | MP3 Players |
Use Scenario: Remote firmware update validation requiring safe rollback on checksum failure. IC Role / Device Role / Timing Role: Uses MROUT as NMI signal to initiate secure boot loader mode; RESET asserts only if MR held >3.36s for full recovery. Use Value: Enables single pushbutton to serve dual functions - avoids extra mechanical switches and simplifies front-panel design. | Use Scenario: Low-power standby mode where VCC may dip near 1.0V during flash write cycles. IC Role / Device Role / Timing Role: Provides guaranteed reset assertion even at VCC = 1.0V, with 6µA quiescent current preserving battery life. Use Value: Ensures deterministic recovery from flash programming errors without requiring higher-VCC auxiliary supervision. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6456UT29S-T | Same VCC/RSTIN thresholds and timing, but MR input controls both MROUT and RESET outputs | Supports combined soft/hard reset from single button; lacks independent MROUT-only control | Select when system requires MR-triggered full reboot capability, not just interrupt |
| TPS3808G33DBVR | Single-output (RESET only), 3.3V fixed threshold, 200ms timeout, 1.6µA ICC, SOT23-6 | No manual reset output or adjustable input - suitable only for basic VCC monitoring | Select when only primary rail supervision is needed and board space is constrained |
Compared with MAX6454UT29S-T, MAX6456UT29S-T adds MR-controlled RESET assertion for unified reset initiation, while TPS3808G33DBVR reduces complexity and current draw but sacrifices dual-output flexibility and secondary rail monitoring.
Availability
MAX6454UT29S-T 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 MAX6454UT29S-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 designs precision analog and mixed-signal semiconductor solutions for industrial, communications, computing, and consumer applications.
The MAX6453–MAX6456 family delivers dual-path µP supervision with independent reset outputs, targeting systems needing both interrupt signaling and full reboot capability from a single compact IC.
FAQ
What is the exact VCC reset threshold voltage for MAX6454UT29S-T?
The MAX6454UT29S-T has a factory-set VCC reset threshold of 2.925V with ±0.075V tolerance (min 2.85V, max 3.00V), corresponding to the "29" suffix in its part number per Table 1 of the datasheet. This value is laser-trimmed during production and remains stable across temperature with 60ppm/°C tempco.
Does MAX6454UT29S-T support monitoring a secondary voltage lower than 1.0V?
Yes, MAX6454UT29S-T supports monitoring secondary voltages down to 0.63V using the RSTIN pin with an external resistor divider. The internal RSTIN comparator reference is fixed at 0.630V ±0.020V, enabling precise threshold setting for core rails such as 0.9V or 0.8V through appropriate resistor selection.
How does the manual reset input (MR) affect the RESET output in MAX6454UT29S-T?
In MAX6454UT29S-T, the MR input affects only the MROUT output - it has no effect on the RESET output. Pulling MR low immediately asserts MROUT, which remains low for ≥140ms after MR returns high. RESET is controlled solely by VCC and RSTIN voltage levels, not by MR activity.
What is the minimum VCC supply voltage required for guaranteed RESET operation in MAX6454UT29S-T?
MAX6454UT29S-T guarantees valid RESET output down to VCC = 1.0V. Below this level, RESET current-sinking capability degrades; however, for applications requiring assertion down to 0V, a 100kΩ pulldown resistor must be added to the RESET line - though this is incompatible with open-drain configuration.
Is MAX6454UT29S-T pin-compatible with other devices in the MAX6453–MAX6456 family?
Yes, MAX6454UT29S-T shares identical SOT23-6 pinout and footprint with all MAX6453–MAX6456 variants, including MAX6453UT29S-T, MAX6455UT29S-T, and MAX6456UT29S-T. All devices use the same land pattern (90-0175) and pin assignments, enabling drop-in replacement within the same functional group.
MAX6454UT29S-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:
- 2.925V, 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-23-6
MAX6454UT29S-T FAQ
1.How can I place an order for MAX6454UT29S-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6454UT29S-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 MAX6454UT29S-T reliable?
The price and inventory of MAX6454UT29S-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6454UT29S-T is usually 5 days.
3.What payment methods are accepted for MAX6454UT29S-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6454UT29S-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6454UT29S-T?
MAX6454UT29S-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6454UT29S-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 MAX6454UT29S-T?
For technical support, including MAX6454UT29S-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6454UT29S-T requirements.
6.How does Aetrix verify that MAX6454UT29S-T is sourced from the original manufacturer or authorized distributors?
All MAX6454UT29S-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 MAX6454UT29S-T meets industry standards.
7.What is the process for return or replacement of MAX6454UT29S-T?
All MAX6454UT29S-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6454UT29S-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 MAX6454UT29S-T part is unused and in its original packaging.
Return procedure for MAX6454UT29S-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6454UT29S-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…
