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Analog Devices Inc./Maxim Integrated MAX6319LHUK29C-T
- Part No.:
- MAX6319LHUK29C-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6319LHUK29C-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,381
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Product details
Overview
The MAX6319LHUK29C-T from Maxim Integrated is a 5-pin SOT23 microprocessor supervisory circuit with active-low push/pull reset output, manual reset input, and factory-trimmed 2.93V reset threshold. It provides 140ms minimum power-on reset timeout, operates from 1.0V to 5.5V supply, guarantees valid reset down to VCC = 1V, and is AEC-Q100 qualified for automotive use.
For engineers reviewing the MAX6319LHUK29C-T datasheet, MAX6319LHUK29C-T pinout, MAX6319LHUK29C-T application, or MAX6319LHUK29C-T equivalent, this page delivers verified technical context, exact pin functions, real-world application mappings, and validated alternative options - all aligned to the official MAX6316–MAX6322 family specification Rev 14 (11/18).
Technical Context
This device belongs to the MAX6316–MAX6322 family of μP supervisors designed to prevent code-execution errors during power-up, brownout, and power-down. It asserts reset when VCC drops below 2.93V, when MR is pulled low, or when reset timeout expires - with guaranteed reset validity down to VCC = 1V and immunity to short negative VCC transients (e.g., ≤4µs at 100mV under threshold).
The MAX6319LHUK29C-T features an active-low push/pull RESET output (not bidirectional or open-drain), a manual reset input with internal 52kΩ pullup, no watchdog input (WDI pin absent), and supports operation across –40°C to +125°C. Its reset timeout is factory-set to 140ms (C-suffix), and it uses laser-trimmed resistors for precise 2.93V threshold accuracy (±1.5% at +25°C, ±2.5% over full temperature range).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.93V nominal (±1.5% at +25°C); ensures reliable power-on detection for 3.3V systems with margin against supply droop |
| Reset Timeout Period | 140ms minimum (C-suffix); holds reset long enough for stable clock and memory initialization in embedded controllers |
| Supply Voltage Range | 1.0V to 5.5V; enables operation during deep brownout and compatibility with 1.8V, 2.5V, 3.3V, and 5V rails |
| Supply Current | 3–8µA at 3.6V (MR unconnected); ultra-low quiescent current extends battery life in portable equipment |
| Operating Temperature | –40°C to +125°C; meets extended industrial and automotive under-hood requirements |
| Reset Output Type | Active-low push/pull; drives reset line directly without external pullup, sinking ≥1.2mA at VCC ≥2.7V |
| AEC-Q100 Qualified | Yes; qualified per AEC-Q100 Rev G for automotive applications including engine control and ADAS modules |
Pinout & Package
MAX6319LHUK29C-T is housed in a 5-pin SOT23 package (package code U5+2A, outline 21-0057), with 0.95mm pitch, 2.9mm × 1.6mm footprint, and thermal resistance θJA = 255.9°C/W on multilayer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET (active-low) | CMOS push/pull output; sinks ≥1.2mA at VCC ≥2.7V; guaranteed logic low down to VCC = 1V |
| 2 | GND | Ground reference for all internal circuitry and reset assertion logic |
| 3 | MR (manual reset) | Active-low input with internal 52kΩ pullup; asserts reset when pulled low; rejects 100ns glitches |
| 4 | NC | No connect - pin 4 is unused and must remain floating (no internal connection) |
| 5 | VCC | Supply input; monitors voltage for reset generation; absolute max rating: –0.3V to +6V |
Key Features
| Feature | Design Value |
|---|---|
| No external components required | Integrated reset generator, precision voltage reference, and timing circuit eliminate need for RC networks or discrete comparators |
| Factory-trimmed reset threshold | 2.93V with ±1.5% tolerance at +25°C ensures accurate power-rail monitoring without calibration |
| Guaranteed reset validity to VCC = 1V | Enables fail-safe reset assertion even during severe brownout conditions common in automotive stop-start systems |
| Immunity to short VCC transients | Rejects ≤4µs negative spikes at 100mV below threshold - prevents spurious resets from EMI or load-switch noise |
| AEC-Q100 qualification | Validated for automotive reliability including HTOL, TC, and ESD testing - suitable for safety-critical ECUs |
Applications
| Engine Control Unit (ECU) | Industrial PLC I/O Module |
|---|---|
|
Use Scenario: Monitors 3.3V microcontroller supply in diesel engine ECU exposed to wide temperature swings and load dump transients. IC Role / Device Role / Timing Role: Supervises VCC and provides 140ms reset hold time to ensure safe boot after ignition cycle restart. Use Value: Prevents corrupted firmware execution during cold cranking (VCC dip to 2.7V) and eliminates need for external reset IC filtering. |
Use Scenario: Ensures deterministic startup of ARM-based I/O controller in modular PLC rack with multiple fieldbus interfaces. IC Role / Device Role / Timing Role: Generates clean, glitch-free reset pulse synchronized to 3.3V rail stabilization after hot-swap insertion. Use Value: Guarantees consistent initialization across all I/O channels by holding reset until supply settles within 2.93V ±2.5% tolerance. |
| Automotive ADAS Camera Module | Battery-Powered Data Logger |
|
Use Scenario: Powers up image signal processor and MIPI interface in rear-view camera subjected to automotive-grade thermal cycling. IC Role / Device Role / Timing Role: Provides AEC-Q100-compliant reset supervision with 140ms timeout matching ISP firmware load time. Use Value: Eliminates boot failures caused by slow-rising 1.8V core rail; operates reliably at –40°C ambient with <8µA supply current. |
Use Scenario: Manages cold-start sequence of low-power MCU and flash memory in environmental sensor node powered by Li-SOCl₂ battery. IC Role / Device Role / Timing Role: Asserts reset during battery insertion and holds for 140ms while LDO stabilizes and RTC initializes. Use Value: Reduces system-level BOM count by integrating precision threshold and timing - no external resistor divider or capacitor needed. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6319MHUK29C-T | Bidirectional active-low RESET output (vs. push/pull); includes internal 4.7kΩ pullup + active P-FET | Required for interfacing with Motorola 68HC11 or other µPs needing bidirectional reset handshake | Select only if target µP requires bidirectional reset signaling; otherwise MAX6319LHUK29C-T offers lower cost and simpler layout |
| TLV803EB29DBZR | 2.93V reset threshold, 140ms timeout, SOT23-5, but no AEC-Q100 qualification and higher ICC (12µA typical) | Suitable for commercial-grade industrial controls where automotive qualification is not mandated | Choose TLV803EB29DBZR only for non-automotive designs requiring TI's support ecosystem; MAX6319LHUK29C-T remains preferred for AEC-Q100 compliance |
Compared with MAX6319MHUK29C-T, the MAX6319LHUK29C-T simplifies design by eliminating bidirectional timing constraints and reducing external component count; versus TLV803EB29DBZR, it delivers automotive-grade reliability and 60% lower quiescent current - critical for battery longevity in harsh environments.
Availability
MAX6319LHUK29C-T is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLC I/O modules, and battery-powered data loggers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6319LHUK29C-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 high-performance analog and mixed-signal ICs for automotive, industrial, and communications markets, with emphasis on reliability, integration, and power efficiency.
The MAX6316–MAX6322 product line delivers compact, factory-configured supervisory circuits optimized for robust reset generation in space-constrained, thermally demanding applications - especially automotive ECUs and industrial controllers.
FAQ
What is the reset threshold voltage of the MAX6319LHUK29C-T?
The MAX6319LHUK29C-T has a factory-trimmed nominal reset threshold of 2.93V, with ±1.5% tolerance at +25°C and ±2.5% over the full –40°C to +125°C operating range. This value is laser-trimmed and specified in Table 1 of the MAX6316–MAX6322 datasheet Rev 14.
Does the MAX6319LHUK29C-T include a watchdog timer function?
No, the MAX6319LHUK29C-T does not include a watchdog timer. Its part number suffix "LH" indicates active-low push/pull reset and manual reset only - confirmed by the Selector Guide showing "-" under WATCHDOG INPUT for MAX6319LH variants. The WDI pin is not implemented.
What is the function of Pin 4 on the MAX6319LHUK29C-T?
Pin 4 on the MAX6319LHUK29C-T is a no-connect (NC) terminal. As shown in the Pin Description table (page 5 of the datasheet), Pin 4 has no internal connection and must be left unconnected on the PCB - it is not tied to GND, VCC, or any internal node.
Can the MAX6319LHUK29C-T operate reliably at VCC = 1.2V?
Yes, the MAX6319LHUK29C-T guarantees valid reset output down to VCC = 1V, including proper RESET assertion and deassertion behavior. At VCC = 1.2V, it maintains full functionality: MR input works, reset timing remains accurate, and VOL stays ≤0.3V with ISINK = 100µA - per Electrical Characteristics table (page 2).
Is the MAX6319LHUK29C-T qualified for automotive applications?
Yes, the MAX6319LHUK29C-T is explicitly AEC-Q100 qualified, as stated in the "Benefits and Features" section of the datasheet. It meets stress testing requirements for temperature cycling, high-temperature operating life, and ESD - making it suitable for engine control, body electronics, and ADAS modules.
MAX6319LHUK29C-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:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.93V
- Output:
- Push-Pull, Totem Pole
- 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
MAX6319LHUK29C-T FAQ
1.How can I place an order for MAX6319LHUK29C-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6319LHUK29C-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 MAX6319LHUK29C-T reliable?
The price and inventory of MAX6319LHUK29C-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6319LHUK29C-T is usually 5 days.
3.What payment methods are accepted for MAX6319LHUK29C-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6319LHUK29C-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6319LHUK29C-T?
MAX6319LHUK29C-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6319LHUK29C-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 MAX6319LHUK29C-T?
For technical support, including MAX6319LHUK29C-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6319LHUK29C-T requirements.
6.How does Aetrix verify that MAX6319LHUK29C-T is sourced from the original manufacturer or authorized distributors?
All MAX6319LHUK29C-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 MAX6319LHUK29C-T meets industry standards.
7.What is the process for return or replacement of MAX6319LHUK29C-T?
All MAX6319LHUK29C-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6319LHUK29C-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 MAX6319LHUK29C-T part is unused and in its original packaging.
Return procedure for MAX6319LHUK29C-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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