My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6322HPUK29A-T
- Part No.:
- MAX6322HPUK29A-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6322HPUK29A-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,550
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6322HPUK29A-T from Maxim Integrated is a 5-pin SOT23 microprocessor supervisory circuit with active-low open-drain reset output, 2.93V factory-trimmed reset threshold, 140ms minimum reset timeout, and no watchdog functionality. It monitors VCC supply integrity and provides manual reset input (MR), ensuring reliable power-on, brownout, and system recovery in embedded control systems.
For engineers reviewing the MAX6322HPUK29A-T datasheet, MAX6322HPUK29A-T pinout, MAX6322HPUK29A-T application, or MAX6322HPUK29A-T equivalent, this page delivers verified specifications, package details, real-world use cases, and validated alternative options for industrial and automotive-grade supervisory design.
Technical Context
The MAX6322HPUK29A-T belongs to the MAX6316–MAX6322 family and implements a precision voltage-monitoring comparator with hysteresis, a reset timer with fixed 140ms assertion period, and a manual reset input with internal 52kΩ pullup. It lacks watchdog circuitry (no WDI pin function) and uses an open-drain RESET output requiring external pullup.
Its reset threshold is factory-trimmed to 2.93V ±2.5% over –40°C to +125°C, with guaranteed valid operation down to VCC = 1.0V. The device supports operation across 1.0V to 5.5V supply range and features immunity to short negative VCC transients (<4µs at 100mV under threshold).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.93V ±2.5% over –40°C to +125°C - ensures accurate brownout detection for 3.3V systems |
| Reset Timeout Period | 140ms minimum - guarantees sufficient processor initialization time after power stabilization |
| Supply Voltage Range | 1.0V to 5.5V - enables compatibility with low-voltage microcontrollers and legacy 5V logic |
| Supply Current | 3µA typical at 3.6V (MR unconnected) - minimizes quiescent power in battery-powered applications |
| RESET Output Type | Active-low open-drain - allows level-shifting and wired-OR connection with multiple reset sources |
| Operating Temperature | –40°C to +125°C - qualified for automotive and industrial environments per AEC-Q100 |
| Package | SOT23-5 (U5+2A) - 2.9mm × 1.6mm footprint ideal for space-constrained PCB layouts |
Pinout & Package
SOT23-5 package (package code U5+2A, outline 21-0057), surface-mount, RoHS-compliant, thermal resistance θJA = 255.9°C/W on multilayer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-low open-drain output - requires external pullup resistor (e.g., 10kΩ to 5V or 3.3V); sinks up to 3.2mA at VCC ≥ 4.5V |
| 2 | GND | Ground reference - must be connected directly to system ground plane for noise immunity |
| 3 | MR | Active-low manual reset input - internally pulled up to VCC via 52kΩ; asserts reset when pulled below 0.3×VCC |
| 4 | - | No connection - unused pin; left floating per datasheet |
| 5 | VCC | Supply input - monitors this rail for reset generation; absolute max rating = +6V |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 2.93V with ±2.5% tolerance over full temperature range - eliminates need for external resistor divider calibration |
| Open-drain RESET output | Supports mixed-voltage systems (pullup to any supply ≤6V) and wired-OR reset bus configurations |
| Manual reset input with internal pullup | 52kΩ internal MR pullup - enables momentary switch interface without external components |
| Low supply current | 3µA typical at 3.6V - extends battery life in portable and remote sensor applications |
| AEC-Q100 qualification | Qualified for automotive applications - meets stress testing requirements for Grade 1 (–40°C to +125°C) |
Applications
| Industrial PLC Controller | Automotive Body Control Module |
|---|---|
|
Use Scenario: Monitors 3.3V microcontroller supply in programmable logic controller during cold cranking and load dump events. IC Role / Device Role / Timing Role: Supervisory IC providing power-fail detection and manual reset initiation via front-panel button. Use Value: Guarantees clean reset assertion even when VCC dips to 1.0V, preventing firmware corruption during voltage transients. |
Use Scenario: Ensures safe startup and fault recovery of body control unit MCU after vehicle ignition cycle. IC Role / Device Role / Timing Role: Voltage supervisor with 140ms reset hold time, interfacing with CAN-enabled MCU reset pin. Use Value: AEC-Q100 qualification and 2.93V threshold match 3.3V rail tolerances, enabling robust operation across battery voltage variations (6V–16V). |
| Portable Medical Monitor | Smart Energy Meter |
|
Use Scenario: Provides fail-safe reset for ARM Cortex-M based patient monitor powered by Li-ion battery. IC Role / Device Role / Timing Role: Low-quiescent-current (3µA) supervisor with open-drain output tied to MCU reset and external watchdog IC. Use Value: Enables >5-year battery life while maintaining reliable brownout protection down to 1.0V VCC. |
Use Scenario: Supervises 3.3V supply in DIN-rail mounted electricity meter exposed to wide ambient temperatures. IC Role / Device Role / Timing Role: High-temperature-stable (–40°C to +125°C) reset generator with manual reset for field firmware updates. Use Value: Factory-trimmed 2.93V threshold avoids drift-induced false resets in thermally cycling enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6322HPUK29D-T | Same 2.93V threshold and open-drain output, but 1.12s reset timeout (vs. 140ms) | Suitable for systems requiring longer reset hold time for complex FPGA configuration or EEPROM write cycles | Select when extended reset assertion is needed; not drop-in due to timing mismatch |
| TPS3808G125DBVR | 2.5V fixed threshold, 200ms reset delay, push/pull output, no MR input, 1.8–6V supply | Lacks manual reset and open-drain flexibility; requires redesign of reset net topology | Choose for cost-sensitive, non-manual-reset applications where 2.5V threshold suffices |
Compared with MAX6322HPUK29A-T, the MAX6322HPUK29D-T offers longer reset hold time but identical electrical interface, while TPS3808G125DBVR trades manual reset and open-drain capability for lower cost and tighter threshold accuracy at 2.5V - making each suitable only for specific system-level timing and connectivity constraints.
Availability
MAX6322HPUK29A-T is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, and portable medical monitors requiring stable component supply with AEC-Q100 qualification and long-term lifecycle support.
Supply support for MAX6322HPUK29A-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, and computing applications, emphasizing reliability, low power, and high integration.
The MAX6316–MAX6322 product line delivers compact, factory-configured supervisory circuits targeting embedded systems needing guaranteed reset behavior during power instability, brownout, or software lockup - with emphasis on automotive-grade temperature range and minimal external components.
FAQ
What is the reset threshold voltage of MAX6322HPUK29A-T?
The MAX6322HPUK29A-T has a factory-trimmed reset threshold of 2.93V, specified with ±2.5% tolerance over the full operating temperature range (–40°C to +125°C). This value is confirmed in Table 1 and Standard Versions table of the datasheet, and applies specifically to the "29" suffix in the part number, indicating nominal 2.93V trip point.
Does MAX6322HPUK29A-T include a watchdog timer?
No, MAX6322HPUK29A-T does not include a watchdog timer. Per the Selector Guide and Pin Configurations section, MAX6322HP variants lack WDI functionality. The "HPUK29A-T" designation confirms active-high push/pull or open-drain output (here: open-drain), manual reset (MR), and no watchdog - unlike MAX6322HP variants with "W", "X", "Y", or "Z" suffixes.
What is the function of Pin 4 on MAX6322HPUK29A-T?
Pin 4 on MAX6322HPUK29A-T is a no-connect (NC) terminal. The datasheet Pin Description table explicitly lists it as "-" for all MAX6322HP variants, and the Typical Operating Circuit diagrams show only pins 1 (RESET), 2 (GND), 3 (MR), and 5 (VCC) used. No internal circuitry connects to Pin 4.
What pullup resistor value is recommended for the open-drain RESET output of MAX6322HPUK29A-T?
A 10kΩ pullup resistor is recommended for the open-drain RESET output of MAX6322HPUK29A-T, as stated in the Applications Information section. This value ensures logic-high recognition while limiting sink current to <0.33mA at 3.3V and <0.5mA at 5V - well within the 3.2mA sink capability at VCC ≥ 4.5V and compatible with typical MCU input leakage.
Is MAX6322HPUK29A-T qualified for automotive applications?
Yes, MAX6322HPUK29A-T is AEC-Q100 qualified (Grade 1, –40°C to +125°C), as explicitly stated in the Benefits and Features section and confirmed in the Absolute Maximum Ratings table. This qualification covers thermal cycling, humidity, and ESD stress tests required for automotive electronic control units.
MAX6322HPUK29A-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.93V
- Output:
- Open Drain, Push-Pull
- Reset:
- Active High/Active Low
- Reset Timeout:
- 1ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6322HPUK29A-T FAQ
1.How can I place an order for MAX6322HPUK29A-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6322HPUK29A-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 MAX6322HPUK29A-T reliable?
The price and inventory of MAX6322HPUK29A-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6322HPUK29A-T is usually 5 days.
3.What payment methods are accepted for MAX6322HPUK29A-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6322HPUK29A-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6322HPUK29A-T?
MAX6322HPUK29A-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6322HPUK29A-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 MAX6322HPUK29A-T?
For technical support, including MAX6322HPUK29A-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6322HPUK29A-T requirements.
6.How does Aetrix verify that MAX6322HPUK29A-T is sourced from the original manufacturer or authorized distributors?
All MAX6322HPUK29A-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 MAX6322HPUK29A-T meets industry standards.
7.What is the process for return or replacement of MAX6322HPUK29A-T?
All MAX6322HPUK29A-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6322HPUK29A-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 MAX6322HPUK29A-T part is unused and in its original packaging.
Return procedure for MAX6322HPUK29A-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6322HPUK29A-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…
