My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6804US26D3+T
- Part No.:
- MAX6804US26D3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6804US26D3+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:1,018
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6804US26D3+T from Maxim Integrated is a 4-pin SOT143 push/pull active-low microprocessor supervisory circuit with factory-trimmed 2.63V reset threshold, 100ms minimum reset timeout, and guaranteed operation down to VCC = 0.7V. It monitors power supplies in 2.85V–5.0V digital systems, features debounced manual-reset input, ultra-low 4µA supply current, and operates across –40°C to +125°C for critical µP power monitoring in portable equipment.
For engineers reviewing the MAX6804US26D3+T datasheet, MAX6804US26D3+T pinout, MAX6804US26D3+T application, or MAX6804US26D3+T equivalent, this device serves as a precision, low-power reset supervisor requiring no external components, validated for brownout detection, manual reset assertion, and stable reset timing in space-constrained embedded designs.
Technical Context
The MAX6804US26D3+T implements a precision bandgap-based voltage comparator with ±1.8% threshold accuracy at +25°C and ±3% over –40°C to +125°C, coupled to a temperature-stable reset timeout timer. Its push/pull RESET output drives low actively and high actively without external pullup, ensuring deterministic logic levels during power transitions.
It integrates an internal 20kΩ MR pullup resistor and rejects fast VCC transients (e.g., ≤30µs at 10V/ms fall rate), while maintaining valid RESET assertion down to VCC = 0.7V - enabling reliable reset hold during deep brownout conditions where most µPs cease operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63V ±1.8% at +25°C; ensures precise brownout detection for 2.85V–5.0V systems |
| Reset Timeout Period | 100ms min (nominal 150ms); guarantees sufficient µP initialization time after power recovery |
| Supply Current | 4µA typical at VCC = +3.0V; enables multi-year battery life in portable applications |
| Operating Voltage Range | 0.7V to 5.5V; supports full reset validity during deep undervoltage events |
| Output Type | Active-low push/pull RESET; eliminates need for external pullup resistor and simplifies interface |
| MR Input Logic | Logic-low asserted; internal 20kΩ pullup allows direct switch-to-GND connection with no debounce circuitry |
| Temperature Range | –40°C to +125°C; qualified for industrial and automotive under-hood environments |
Pinout & Package
MAX6804US26D3+T is housed in a 4-pin SOT143 package (U4-1 outline, 21-0052 footprint), measuring 2.9mm × 1.6mm × 1.1mm, optimized for space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for all internal comparators, timers, and output stage |
| 2 | RESET | Active-low push/pull output; asserts low during VCC < 2.63V or MR low, holds for ≥100ms post-recovery |
| 3 | MR | Manual-reset input; logic-low assertion triggers reset; internal 20kΩ pullup enables switch-only implementation |
| 4 | VCC | Primary power supply input; powers all internal circuitry and defines reset threshold reference |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 2.63V with ±1.8% tolerance at +25°C enables drop-in replacement without calibration |
| Ultra-low quiescent current | 4µA at 3.0V allows integration into always-on battery-backed subsystems without measurable drain |
| Guaranteed reset validity to 0.7V | Ensures deterministic RESET state even during severe brownout-critical for fail-safe µP restart |
| Debounced MR input with internal pullup | Eliminates external RC network; single-pole momentary switch directly connects MR to GND |
| Transient-immune reset comparator | Rejects VCC glitches ≤30µs (at 10V/ms), preventing spurious resets in noisy power environments |
Applications
| Industrial PLC Controllers | Portable Medical Monitors |
|---|---|
Use Scenario: Power cycling and brownout recovery in programmable logic controllers deployed in factory-floor environments with unstable 3.3V/5V rails. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-low RESET to halt CPU execution until stable VCC > 2.63V and holding for ≥100ms. Use Value: Prevents corrupted firmware execution during undervoltage by guaranteeing reset duration exceeds µP boot ROM initialization time. |
Use Scenario: Battery-powered ECG and pulse oximeter devices requiring multi-year shelf life and reliable cold-start behavior. IC Role / Device Role / Timing Role: Low-current (4µA) supervisor monitoring 3.0V Li-ion supply, triggering reset on discharge below 2.63V. Use Value: Extends usable battery capacity by minimizing quiescent drain while ensuring deterministic restart at end-of-life voltage. |
| Automotive Body Control Modules | Smart Energy Meters |
Use Scenario: Reset management in under-hood BCMs exposed to wide thermal swings (–40°C to +125°C) and load-dump transients. IC Role / Device Role / Timing Role: High-temperature-stable supervisor with ±3% threshold variation, asserting RESET during cranking-induced brownouts. Use Value: Maintains functional safety integrity by holding reset until VCC recovers fully-preventing partial register initialization. |
Use Scenario: Tamper-resistant utility meter with non-volatile memory retention and secure boot sequence. IC Role / Device Role / Timing Role: Precision reset generator ensuring EEPROM write completion before µC reset release (100ms timeout). Use Value: Guarantees data coherency during AC mains interruption by synchronizing reset release with flash write completion latency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6314US26D3+T | Same 2.63V threshold and 100ms timeout, but uses different BiCMOS process; higher ICC (10µA typ) | Limited to commercial temperature range (0°C to +70°C); not rated for industrial or automotive use | Select when cost sensitivity outweighs extended temperature requirement and higher supply current is acceptable |
| TPS3808G33DBVR | 3.3V fixed threshold (not adjustable), 200ms timeout, 1.6µA ICC; requires external pullup for open-drain output | No manual reset input; lacks MR debounce and internal pullup-requires external switch circuitry | Choose for ultra-low-power 3.3V-only systems where manual reset is unnecessary and longer timeout is acceptable |
Compared with MAX6804US26D3+T, MAX6314US26D3+T trades industrial temperature support and lower ICC for lower unit cost, while TPS3808G33DBVR offers superior quiescent current but sacrifices threshold flexibility, manual reset integration, and extended temperature capability.
Availability
MAX6804US26D3+T is available at Aetrix Electronics and suitable for industrial PLC controllers, portable medical monitors, automotive body control modules, and smart energy meters requiring stable component supply, long-term lifecycle support, and RoHS-compliant lead-free packaging.
Supply support for MAX6804US26D3+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 industrial, automotive, communications, and computing applications, with emphasis on reliability, low power, and integration.
The MAX6803/MAX6804/MAX6805 family delivers compact, low-cost µP supervisory solutions targeting space- and power-constrained embedded systems requiring robust brownout detection and manual reset capability.
FAQ
What is the reset threshold voltage of MAX6804US26D3+T and how tightly is it specified?
The MAX6804US26D3+T has a factory-trimmed reset threshold of 2.63V, with ±1.8% tolerance at +25°C and ±3% over the full –40°C to +125°C operating range. This precision ensures consistent brownout detection across temperature and supply variations without external calibration. The MAX6804US26D3+T is designed for applications where accurate power-rail monitoring is essential to prevent erratic microprocessor behavior.
Does MAX6804US26D3+T require external components to operate?
No, the MAX6804US26D3+T operates autonomously with no external components required. Its internal 20kΩ MR pullup resistor enables direct connection of a momentary switch between MR and GND, and its push/pull RESET output eliminates the need for an external pullup. This integration reduces BOM count and PCB area-key advantages in the MAX6804US26D3+T's target applications like portable instrumentation and space-constrained controllers.
What is the minimum supply voltage at which MAX6804US26D3+T guarantees valid RESET assertion?
The MAX6804US26D3+T guarantees correct RESET assertion and deassertion down to VCC = 0.7V, verified across –40°C to +125°C. This ensures deterministic reset behavior during deep brownout conditions where many microprocessors stall or behave unpredictably. That guarantee is a core design feature of the MAX6804US26D3+T and distinguishes it from alternatives with higher minimum operating voltages.
How does the manual-reset input (MR) function on MAX6804US26D3+T?
The MR pin on MAX6804US26D3+T is an active-low input with internal 20kΩ pullup; asserting MR low triggers immediate RESET assertion, which remains active for the full 100ms timeout period after MR returns high. No external debounce circuitry is needed-the MAX6804US26D3+T handles noise rejection internally. This simplifies hardware design and improves reliability in field-deployed systems using the MAX6804US26D3+T.
What package type and footprint does MAX6804US26D3+T use?
The MAX6804US26D3+T uses a 4-pin SOT143 package (outline U4-1, land pattern 90-0183), measuring 2.9mm × 1.6mm × 1.1mm. This compact surface-mount package supports high-density PCB layouts and is compatible with standard reflow processes. The MAX6804US26D3+T's SOT143 footprint is identical across the MAX6803/MAX6804/MAX6805 family, enabling layout reuse when switching between push/pull and open-drain variants.
MAX6804US26D3+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- TO-253-4, TO-253AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.63V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-143-4
MAX6804US26D3+T FAQ
1.How can I place an order for MAX6804US26D3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6804US26D3+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 MAX6804US26D3+T reliable?
The price and inventory of MAX6804US26D3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6804US26D3+T is usually 5 days.
3.What payment methods are accepted for MAX6804US26D3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6804US26D3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6804US26D3+T?
MAX6804US26D3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6804US26D3+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 MAX6804US26D3+T?
For technical support, including MAX6804US26D3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6804US26D3+T requirements.
6.How does Aetrix verify that MAX6804US26D3+T is sourced from the original manufacturer or authorized distributors?
All MAX6804US26D3+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 MAX6804US26D3+T meets industry standards.
7.What is the process for return or replacement of MAX6804US26D3+T?
All MAX6804US26D3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6804US26D3+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 MAX6804US26D3+T part is unused and in its original packaging.
Return procedure for MAX6804US26D3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6804US26D3+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…
