My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6319MHUK46C+T
- Part No.:
- MAX6319MHUK46C+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6319MHUK46C+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:27,500
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6319MHUK46C+T from Maxim Integrated is a 5-pin SOT23 microprocessor supervisory circuit with active-low bidirectional reset output, 4.63V factory-trimmed reset threshold, 140ms minimum reset timeout period, and manual reset input - designed for reliable power-on/brownout detection and system recovery in embedded controllers and battery-powered instrumentation.
For engineers reviewing the MAX6319MHUK46C+T datasheet, MAX6319MHUK46C+T pinout, MAX6319MHUK46C+T application, or MAX6319MHUK46C+T equivalent, key selection criteria include bidirectional reset compatibility with Motorola 68HC11-style μPs, guaranteed reset validity down to VCC = 1V, immunity to short negative VCC transients, and AEC-Q100 qualification for automotive-adjacent industrial use.
Technical Context
The MAX6319MHUK46C+T implements a bidirectional active-low reset output with integrated 4.7kΩ pullup resistor and parallel P-channel active pullup FET, enabling fast RESET rise time (<666ns at 5V/400pF) even with multiple devices on the bus - critical for μPs like the 68HC11 that distinguish internal vs. external reset sources by sampling RESET after two clock cycles.
It features a factory-trimmed 4.63V reset threshold (±2.5% over -40°C to +125°C), 140ms minimum reset timeout (MAX63__C_-T variant), manual reset input with 52kΩ internal pullup and 100ns glitch rejection, and no watchdog timer - distinguishing it from MAX6318MHUK46CY-T and MAX6316MUK46CY-T variants in the same family.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.63V nominal (±2.5% over -40°C to +125°C); ensures reliable brownout detection for 5V systems with margin. |
| Reset Timeout Period | 140ms minimum (MAX63__C_-T); guarantees sufficient hold time for μP initialization after power-up or recovery. |
| Supply Current | 3–8µA at VCC = 3.6V; enables ultra-low-power operation in battery-backed or portable equipment. |
| Operating Voltage Range | 1.0V to 5.5V; supports valid reset assertion down to VCC = 1V, critical for low-voltage brownout handling. |
| Reset Output Type | Active-low bidirectional; interfaces directly with Motorola 68HC11 and similar μPs requiring bidirectional reset I/O. |
| Package | SOT23-5 (U5+2A); 2.9mm × 1.6mm footprint saves board space in compact embedded designs. |
| AEC-Q100 Qualified | Grade 3 (-40°C to +125°C); validated for automotive-adjacent industrial and transportation applications. |
Pinout & Package
SOT23-5 package (U5+2A outline, land pattern 90-0174), 2.9mm × 1.6mm × 1.1mm body, RoHS-compliant lead-free finish (+T suffix).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Bidirectional active-low reset output; sinks current when asserted, pulls high via internal 4.7kΩ + P-FET during release. |
| 2 | GND | Ground reference for all internal circuits and reset timing; must be low-impedance connection. |
| 3 | MR | Manual reset input; active-low, internally pulled up to VCC via 52kΩ; 100ns glitch rejection prevents false triggers. |
| 4 | NC | No connect; pin 4 is unconnected and must remain floating per datasheet. |
| 5 | VCC | Supply voltage input (1.0V–5.5V); reset asserts when VCC falls below 4.63V threshold. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional reset with active pullup | Enables μP-level reset source identification (e.g., 68HC11) without external components or timing compromises. |
| Factory-trimmed 4.63V threshold | Eliminates external resistor networks; ±2.5% accuracy over full temperature range ensures consistent brownout behavior. |
| 140ms reset timeout (C-grade) | Guarantees μP core and peripherals stabilize before release; avoids premature execution in complex boot sequences. |
| Valid reset down to VCC = 1V | Ensures deterministic reset assertion during deep brownout or battery sag, preventing undefined μP states. |
| AEC-Q100 Grade 3 qualification | Validated for extended temperature operation (-40°C to +125°C), supporting under-hood and industrial control environments. |
Applications
| Industrial Controllers | Portable Instrumentation |
|---|---|
|
Use Scenario: PLC I/O modules operating in factory-floor environments with fluctuating 24VDC supplies and EMI-induced transients. IC Role / Device Role / Timing Role: Monitors 5V logic rail derived from 24VDC; asserts bidirectional RESET to ARM Cortex-M7 μP upon brownout or MR activation. Use Value: Prevents firmware corruption during voltage sags; bidirectional capability allows μP to log fault cause (external vs. internal) before reboot. |
Use Scenario: Handheld multimeter with Li-ion battery, where supply drops from 4.2V to 3.0V during discharge. IC Role / Device Role / Timing Role: Supervises 3.3V LDO output; triggers 140ms reset when VCC falls below 4.63V threshold (indicating upstream regulator failure or battery disconnect). Use Value: Ensures clean restart before analog front-end ADC calibration fails; ultra-low ICC (≤8µA) extends battery life between calibrations. |
| Automotive Body Control | Smart Sensor Nodes |
|
Use Scenario: Door module MCU subjected to load-dump and cold-crank transients on 12V rail. IC Role / Device Role / Timing Role: Watches 5V domain; uses MR input for service-mode reset; leverages AEC-Q100 qualification for reliability. Use Value: Immunity to 200ns negative VCC glitches prevents spurious resets during alternator switching; no external components reduce BOM count. |
Use Scenario: Wireless temperature sensor node powered by energy harvesting, with intermittent 3.3V supply. IC Role / Device Role / Timing Role: Provides deterministic reset on first valid VCC rise; holds RESET low for 140ms to allow RF SoC clock stabilization. Use Value: Eliminates need for RC-based power-on reset; bidirectional output supports future firmware updates requiring μP-initiated reset handshake. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6319LHUK46C+T | Active-low push/pull reset output (not bidirectional); identical 4.63V threshold and 140ms timeout. | Requires external pullup for open-drain compatibility; cannot interface with 68HC11-style bidirectional reset pins. | Select when system uses standard CMOS reset input and no μP-level reset-source discrimination is needed. |
| MAX6318MHUK46CY+T | Includes watchdog timer (1.6s typical timeout); same bidirectional reset, 4.63V threshold, and 140ms reset timeout. | Supports software hang detection; adds WDI pin and associated firmware overhead. | Select when system requires both manual reset and watchdog supervision - e.g., remote telemetry nodes with infrequent human intervention. |
Compared with MAX6319MHUK46C+T, MAX6319LHUK46C+T simplifies reset drive but loses bidirectional functionality, while MAX6318MHUK46CY+T adds watchdog capability at the cost of increased software complexity and pin count - making MAX6319MHUK46C+T optimal for manual-reset-only, 68HC11-compatible systems demanding minimal component count and guaranteed low-VCC operation.
Availability
MAX6319MHUK46C+T is available at Aetrix Electronics and suitable for industrial controllers, portable instrumentation, and automotive body electronics requiring stable component supply, AEC-Q100-qualified timing assurance, and bidirectional reset interoperability.
Supply support for MAX6319MHUK46C+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 industrial, automotive, and computing applications.
The MAX6316–MAX6322 family delivers highly integrated μP supervisory functions - specifically engineered for robust power monitoring, manual reset, and bidirectional reset interfacing in space-constrained, mission-critical embedded systems.
FAQ
What is the reset output configuration of MAX6319MHUK46C+T?
The MAX6319MHUK46C+T features an active-low bidirectional reset output with integrated 4.7kΩ pullup resistor and parallel P-channel active pullup FET. This configuration enables direct interface with microprocessors such as the Motorola 68HC11 that require bidirectional reset I/O for distinguishing internal vs. external reset sources. The output sinks current when asserted and actively pulls high during release, eliminating need for external components.
Does MAX6319MHUK46C+T include a watchdog timer?
No, MAX6319MHUK46C+T does not include a watchdog timer. Its Selector Guide entry confirms "-" under WATCHDOG INPUT column. It provides manual reset (MR) and power-supply monitoring only. For watchdog capability with identical reset threshold and bidirectional output, consider MAX6318MHUK46CY+T - which adds WDI pin and 1.6s typical watchdog timeout.
What is the exact reset threshold voltage for MAX6319MHUK46C+T?
The MAX6319MHUK46C+T has a factory-trimmed nominal reset threshold of 4.63V, with tolerance of ±2.5% over the full operating temperature range (-40°C to +125°C). This value is confirmed in Table 1 (MAX63___46_ _-T row) and Standard Versions table, where "46" in the part number explicitly denotes the 4.63V threshold variant.
Can MAX6319MHUK46C+T operate reliably below 2.5V supply?
Yes, MAX6319MHUK46C+T guarantees valid reset assertion down to VCC = 1.0V, as specified in Absolute Maximum Ratings and Electrical Characteristics. Its reset output remains functional and well-defined even during deep brownout conditions - a key differentiator from many supervisory ICs that cease operation below 2.0V.
Is MAX6319MHUK46C+T pin-compatible with other MAX6319 variants?
Yes, all MAX6319 variants including MAX6319MHUK46C+T use the same SOT23-5 package and identical pinout: Pin 1 = RESET, Pin 2 = GND, Pin 3 = MR, Pin 4 = NC, Pin 5 = VCC. However, output type differs - MH suffix denotes bidirectional, while LH suffix denotes active-low push/pull - so PCB layout is compatible but system-level reset interface must match the selected variant's electrical behavior.
MAX6319MHUK46C+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:
- 4.63V
- Output:
- Push-Pull, Bi-Directional
- 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
MAX6319MHUK46C+T FAQ
1.How can I place an order for MAX6319MHUK46C+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6319MHUK46C+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 MAX6319MHUK46C+T reliable?
The price and inventory of MAX6319MHUK46C+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6319MHUK46C+T is usually 5 days.
3.What payment methods are accepted for MAX6319MHUK46C+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6319MHUK46C+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6319MHUK46C+T?
MAX6319MHUK46C+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6319MHUK46C+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 MAX6319MHUK46C+T?
For technical support, including MAX6319MHUK46C+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6319MHUK46C+T requirements.
6.How does Aetrix verify that MAX6319MHUK46C+T is sourced from the original manufacturer or authorized distributors?
All MAX6319MHUK46C+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 MAX6319MHUK46C+T meets industry standards.
7.What is the process for return or replacement of MAX6319MHUK46C+T?
All MAX6319MHUK46C+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6319MHUK46C+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 MAX6319MHUK46C+T part is unused and in its original packaging.
Return procedure for MAX6319MHUK46C+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6319MHUK46C+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…
