My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6322HPUK46C+T
- Part No.:
- MAX6322HPUK46C+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6322HPUK46C+T.pdf
- Description:
- IC SUPERVISOR 4.630V SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,324
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6322HPUK46C+T from Maxim Integrated is a 5-pin SOT23 microprocessor supervisory circuit with active-low open-drain reset output, manual reset input, and factory-trimmed 4.63V reset threshold. It provides 140ms minimum reset timeout and 1.6s typical watchdog timeout, operating from 1.0V to 5.5V supply across –40°C to +125°C. Used in embedded control systems to prevent code-execution errors during power-up, brownout, or software lockup.
For engineers reviewing the MAX6322HPUK46C+T datasheet, MAX6322HPUK46C+T pinout, MAX6322HPUK46C+T application, or MAX6322HPUK46C+T equivalent, key selection criteria include its open-drain RESET output compatible with multi-supply systems, guaranteed reset validity down to VCC = 1V, immunity to short negative VCC transients, and AEC-Q100 qualification for automotive-grade reliability.
Technical Context
The MAX6322HPUK46C+T integrates a precision voltage monitor, manual reset logic, and watchdog timer with edge-triggered WDI input that clears on rising or falling transitions. Its reset generator asserts active-low RESET when VCC falls below 4.63V (±2.5% over temperature), MR is pulled low, or WDI remains static beyond 1.6s - holding RESET low for ≥140ms after recovery.
As an open-drain output device, MAX6322HPUK46C+T requires an external pullup resistor (e.g., 10kΩ) to any supply up to 6V, enabling level-shifting and wired-OR reset bus configurations. It draws only 3–12µA supply current at 3.6V/5.5V and features internal 52kΩ MR pullup, 100ns MR glitch rejection, and guaranteed operation down to VCC = 1V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.63V ±2.5% over –40°C to +125°C - ensures reliable brownout detection for 5V nominal systems. |
| Reset Timeout | 140ms minimum - guarantees sufficient hold time for microprocessor initialization after power recovery. |
| Watchdog Timeout | 1.6s typical - enables robust software execution monitoring without excessive false triggers. |
| Supply Voltage Range | 1.0V to 5.5V - supports operation during deep brownout and compatibility with 3.3V/5V logic domains. |
| RESET Output Type | Active-low open-drain - allows connection to multiple voltage rails and wired-OR reset buses. |
| MR Input Logic | Active-low with 52kΩ internal pullup - eliminates need for external pullup; accepts TTL/CMOS levels. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive and industrial embedded environments. |
Pinout & Package
MAX6322HPUK46C+T is housed in a RoHS-compliant 5-pin SOT23 package (package code U5+2A, outline 21-0057), measuring 2.9mm × 1.6mm × 1.1mm with gull-wing leads. The compact footprint supports high-density PCB layouts in space-constrained portable and automotive applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-low open-drain output - must be externally pulled up; sinks current during reset assertion. |
| 2 | GND | Ground reference - connects to system ground plane for noise immunity and stable operation. |
| 3 | MR | Active-low manual reset input - internally pulled up to VCC; driven low to force system reset. |
| 4 | NC | No connect - left unconnected per datasheet; not bonded or functional. |
| 5 | VCC | Power supply input - monitors voltage level; reset asserted when VCC drops below 4.63V. |
Key Features
| Feature | Design Value |
|---|---|
| Open-drain RESET output | Enables level-shifting and wired-OR reset busing across mixed-voltage systems (e.g., 3.3V µP + 5V peripherals). |
| Factory-trimmed 4.63V threshold | Eliminates external resistor divider; achieves ±2.5% accuracy over full temperature range without calibration. |
| 140ms reset timeout | Guarantees µP core and peripheral initialization completes before reset deassertion. |
| AEC-Q100 qualification | Validated for automotive applications including engine control units and ADAS modules requiring extended temperature reliability. |
| 1.6s watchdog timeout | Matches typical firmware loop durations; prevents silent hangs while avoiding nuisance resets from transient delays. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC I/O Module |
|---|---|
Use Scenario: Monitors 5V supply rail in diesel ECU exposed to load dump and cold-crank conditions. IC Role / Device Role / Timing Role: Supervisory circuit asserting open-drain RESET to ARM Cortex-M7 MCU upon VCC dip below 4.63V or software hang. Use Value: Prevents corrupted flash writes during brownout; 1.6s watchdog timeout aligns with safety-critical task scheduling intervals. | Use Scenario: Ensures deterministic startup of modular I/O controller with mixed 3.3V FPGA and 24V field-side interface. IC Role / Device Role / Timing Role: Generates system-wide reset via open-drain bus pulled to 3.3V, synchronized with manual reset button and watchdog supervision. Use Value: External 10kΩ pullup enables interoperability with 3.3V logic; 140ms timeout exceeds FPGA configuration time. |
| Medical Infusion Pump Controller | Ruggedized Handheld Terminal |
Use Scenario: Secures safe power-on sequence and runtime fault recovery in battery-powered infusion pump with motor drivers. IC Role / Device Role / Timing Role: Resets PIC32MX MCU on VCC sag or missed WDI pulse; MR input tied to emergency stop switch. Use Value: Guaranteed operation down to VCC = 1V ensures fail-safe shutdown during battery depletion; AEC-Q100 grade supports ISO 13485 compliance. | Use Scenario: Manages power sequencing and software watchdog for ARM-based terminal operating in wide-temperature outdoor environments. IC Role / Device Role / Timing Role: Provides reset signal to application processor and baseband IC via shared open-drain line; MR linked to hardware reset button. Use Value: Immunity to 200ns VCC glitches prevents spurious resets in electrically noisy field deployments; –40°C to +125°C rating covers extended thermal envelope. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6322HPUK46D+T | Same 4.63V threshold and open-drain output, but 1.12s reset timeout (vs. 140ms) | Suitable for systems requiring longer reset assertion, e.g., complex FPGA configuration | Select when extended reset hold time is needed; not drop-in due to timeout mismatch |
| TPS3808G33DBVR | 3.3V fixed threshold, push-pull active-low RESET, no watchdog, 200ms timeout | Lacks watchdog and manual reset; designed for simpler power-monitoring-only use cases | Choose for cost-sensitive non-watchdog applications where 3.3V threshold suffices |
Compared with MAX6322HPUK46C+T, the MAX6322HPUK46D+T extends reset duration for slower peripherals, while TPS3808G33DBVR trades watchdog capability for lower cost and simpler integration-neither offers pin-compatible replacement without layout or firmware changes.
Availability
MAX6322HPUK46C+T is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLC I/O modules, medical infusion pump controllers, and ruggedized handheld terminals requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6322HPUK46C+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, mixed-signal, and power management ICs for demanding industrial, automotive, and computing applications.
The MAX6316–MAX6322 family delivers highly integrated µP supervisory functions-including reset generation, manual reset, and watchdog timing-in miniature SOT23 packages for space-constrained embedded systems requiring high reliability.
FAQ
What is the reset threshold voltage of the MAX6322HPUK46C+T?
The MAX6322HPUK46C+T has a factory-trimmed reset threshold of 4.63V, specified with ±1.5% tolerance at +25°C and ±2.5% over the full operating temperature range of –40°C to +125°C. This precise threshold ensures reliable detection of brownout conditions in 5V nominal systems without requiring external resistor networks.
Does the MAX6322HPUK46C+T include a watchdog timer?
Yes, the MAX6322HPUK46C+T includes a watchdog timer with a typical timeout period of 1.6 seconds. The watchdog is triggered by lack of transitions on the WDI pin and is cleared by any rising or falling edge. It remains disabled if WDI is left unconnected or three-stated, making it configurable for applications that require or omit this feature.
What type of reset output does the MAX6322HPUK46C+T provide?
The MAX6322HPUK46C+T provides an active-low open-drain RESET output. This requires an external pullup resistor (typically 10kΩ) to a chosen voltage rail (up to 6V), enabling level translation, wired-OR reset bus configurations, and compatibility with multiple logic families - a key advantage over push-pull alternatives.
Is the MAX6322HPUK46C+T qualified for automotive applications?
Yes, the MAX6322HPUK46C+T is AEC-Q100 qualified and rated for operation from –40°C to +125°C. Its robust design - including immunity to short negative VCC transients and guaranteed reset validity down to VCC = 1V - meets automotive requirements for engine control, body electronics, and ADAS subsystems.
What is the function of the MR pin on the MAX6322HPUK46C+T?
The MR (Manual Reset) pin on the MAX6322HPUK46C+T is an active-low input that forces a system reset when pulled low. It features an internal 52kΩ pullup resistor, allowing it to be left unconnected when unused. The MR-to-reset propagation delay is 230ns at VCC = 5V, and it rejects glitches as short as 100ns, ensuring noise-immune hardware reset functionality.
MAX6322HPUK46C+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.63V
- Output:
- Open Drain, Push-Pull
- Reset:
- Active High/Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6322HPUK46C+T FAQ
1.How can I place an order for MAX6322HPUK46C+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6322HPUK46C+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 MAX6322HPUK46C+T reliable?
The price and inventory of MAX6322HPUK46C+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6322HPUK46C+T is usually 5 days.
3.What payment methods are accepted for MAX6322HPUK46C+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6322HPUK46C+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6322HPUK46C+T?
MAX6322HPUK46C+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6322HPUK46C+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 MAX6322HPUK46C+T?
For technical support, including MAX6322HPUK46C+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6322HPUK46C+T requirements.
6.How does Aetrix verify that MAX6322HPUK46C+T is sourced from the original manufacturer or authorized distributors?
All MAX6322HPUK46C+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 MAX6322HPUK46C+T meets industry standards.
7.What is the process for return or replacement of MAX6322HPUK46C+T?
All MAX6322HPUK46C+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6322HPUK46C+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 MAX6322HPUK46C+T part is unused and in its original packaging.
Return procedure for MAX6322HPUK46C+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6322HPUK46C+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…
