My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6316LUK46BY-T
- Part No.:
- MAX6316LUK46BY-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6316LUK46BY-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,807
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6316LUK46BY-T from Maxim Integrated is a 5-pin SOT23 microprocessor supervisory circuit with active-low push/pull reset output, 4.63V factory-trimmed reset threshold, 140ms minimum reset timeout, and 1.6s typical watchdog timeout. It monitors VCC supply integrity and provides manual reset and watchdog functionality for embedded microcontroller systems requiring reliable power-on/brownout reset assertion.
For engineers reviewing the MAX6316LUK46BY-T datasheet, MAX6316LUK46BY-T pinout, MAX6316LUK46BY-T application, or MAX6316LUK46BY-T equivalent, key selection criteria include its guaranteed reset validity down to VCC = 1V, immunity to short negative VCC transients (<4µs at 100mV under threshold), AEC-Q100 qualification, and compatibility with 2.5V–5.5V operating voltage range.
Technical Context
The MAX6316LUK46BY-T implements a precision voltage monitor using laser-trimmed resistors to set its 4.63V reset threshold (±1.5% at +25°C, ±2.5% over –40°C to +125°C) and integrates a watchdog timer cleared by WDI edge transitions. Its push/pull reset output sources/sinks current and remains valid down to VCC = 1V, enabling robust reset assertion during brownout conditions.
This variant belongs to the MAX6316L series, featuring active-low push/pull reset (not bidirectional or open-drain), manual reset input (MR), and watchdog input (WDI). It supports four factory-programmed reset timeout periods (1ms/20ms/140ms/1.12s) and four watchdog timeout options (6.3ms/102ms/1.6s/25.6s); the "C" suffix denotes 140ms reset timeout and "Y" denotes 1.6s watchdog timeout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.63V nominal (±1.5% at +25°C); ensures reliable detection of VCC drop below safe operating level for 5V systems. |
| Reset Timeout Period | 140ms minimum; guarantees reset signal remains asserted long enough for microprocessor initialization after power-up or recovery. |
| Watchdog Timeout | 1.6s typical; provides sufficient time window for firmware to service WDI without false resets in mid-speed applications. |
| Supply Voltage Range | 1.0V to 5.5V; enables operation across wide input rails including partially discharged battery conditions. |
| Supply Current | 5µA typical at VCC = 3.6V; minimizes quiescent power draw in always-on monitoring circuits. |
| Operating Temperature | –40°C to +125°C; supports deployment in automotive under-hood and industrial environments. |
| AEC-Q100 Qualified | Yes; certified for automotive applications per stress test requirements (Grade 1). |
Pinout & Package
MAX6316LUK46BY-T is housed in a miniature 5-pin SOT23 package (package code U5+2A, outline 21-0057), optimized for space-constrained PCB layouts and compatible with standard reflow soldering processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-low push/pull reset output; asserts logic low when VCC < 4.63V, MR pulled low, or watchdog times out; sinks/source current up to 1.2mA at VCC ≥ 2.7V. |
| 2 | GND | Ground reference for all internal circuitry and reset output; must be connected to system ground plane for stable operation. |
| 3 | MR | Active-low manual reset input; internally pulled up to VCC via 52kΩ resistor; pulling low forces reset for full 140ms timeout period. |
| 4 | WDI | Watchdog input; rising or falling edge clears internal timer; unconnected or three-stated to disable watchdog function. |
| 5 | VCC | Supply voltage input; powers internal monitor, reset generator, and watchdog; reset asserts when VCC drops below 4.63V threshold. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 4.63V with ±1.5% tolerance at +25°C ensures precise power-rail monitoring without external components. |
| Guaranteed reset validity to VCC = 1V | Enables reliable reset assertion even during deep brownout, preventing undefined microprocessor states. |
| Immunity to short negative VCC transients | Rejects <4µs glitches at 100mV under threshold, eliminating spurious resets from supply noise. |
| No external components required | Integrates precision voltage reference, reset timer, watchdog, and pullup resistors-reducing BOM count and board area. |
| AEC-Q100 qualification | Validated for automotive Grade 1 temperature range (–40°C to +125°C), supporting under-hood and infotainment use. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC I/O Module |
|---|---|
|
Use Scenario: Monitors 5V supply rail powering MCU and CAN transceiver in engine control unit exposed to wide temperature swings and load-dump transients. IC Role / Device Role / Timing Role: Provides power-on reset, brownout detection, and watchdog supervision to ensure deterministic MCU startup and fault recovery. Use Value: AEC-Q100 qualification and 4.63V threshold match common 5V rail tolerances; 140ms timeout accommodates slow-ramping automotive supplies. |
Use Scenario: Supervises ARM Cortex-M based controller in modular PLC base unit with isolated I/O channels and fieldbus interfaces. IC Role / Device Role / Timing Role: Generates clean, glitch-immune reset signal during power-up and detects software hangs via WDI interface. Use Value: Push/pull output drives reset line directly without external pullup; 1.6s watchdog timeout aligns with typical firmware loop execution windows. |
| Medical Infusion Pump Controller | Smart Energy Meter MCU Subsystem |
|
Use Scenario: Ensures fail-safe restart of safety-critical pump motor controller after AC/DC converter brownout or battery sag. IC Role / Device Role / Timing Role: Acts as primary reset supervisor with manual reset capability for service mode and watchdog for runtime software integrity. Use Value: Guaranteed reset down to VCC = 1V prevents MCU lockup during partial power loss; MR pin allows technician-initiated reset without power cycle. |
Use Scenario: Monitors 3.3V supply feeding metrology SoC and wireless communication module in AMI meter deployed in outdoor enclosures. IC Role / Device Role / Timing Role: Delivers accurate power-fail detection and periodic watchdog verification to maintain data logging integrity and secure boot sequence. Use Value: Low 5µA supply current extends battery backup life; 4.63V threshold avoids false triggers on 3.3V rail while remaining compatible with 5V auxiliary supplies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6316LUK46CY-T | Same 4.63V threshold, 140ms reset timeout, and 1.6s watchdog; differs only in SOT23 top mark (ACDD vs ACDB) and RoHS status (CY-T = lead-free, BY-T = leaded). | Identical functional behavior; CY-T version used where lead-free compliance is mandatory (e.g., EU medical devices). | Select MAX6316LUK46BY-T for legacy leaded assembly or cost-sensitive industrial designs; CY-T for RoHS-compliant production. |
| TPS3808G33DBVR | 3.3V fixed reset threshold, 200ms timeout, no watchdog; lower quiescent current (1.8µA), same SOT23-5 package. | Suitable for 3.3V-only systems without watchdog requirement; lacks manual reset and WDI input. | Choose TPS3808G33DBVR only if 3.3V monitoring suffices and watchdog/manual reset are unnecessary; not a functional replacement for MAX6316LUK46BY-T. |
Compared with MAX6316LUK46CY-T, the BY-T variant offers identical electrical performance but with leaded packaging for compatibility with legacy soldering processes; versus TPS3808G33DBVR, it provides higher reset threshold, integrated watchdog, and manual reset-making it suitable for 5V automotive and industrial applications demanding full supervisory coverage.
Availability
MAX6316LUK46BY-T is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLC modules, medical infusion pump controllers, and smart energy meter subsystems requiring stable component supply across extended temperature ranges and high-reliability certifications.
Supply support for MAX6316LUK46BY-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) is a semiconductor company specializing in analog and mixed-signal ICs for power management, sensing, and interface applications.
The MAX6316–MAX6322 family was designed specifically for microprocessor supervisory functions in automotive, industrial, and medical systems-delivering precision reset thresholds, configurable timeouts, and robust noise immunity in minimal SOT23 packages.
FAQ
What is the exact reset threshold voltage of MAX6316LUK46BY-T?
The MAX6316LUK46BY-T features a factory-trimmed nominal reset threshold of 4.63V, with tolerance of ±1.5% at +25°C and ±2.5% over the full –40°C to +125°C operating range. This value is confirmed in Table 1 of the datasheet and corresponds to the "46" in the part number, indicating 4.63V (46 × 0.1V + 2.5V baseline).
Does MAX6316LUK46BY-T support watchdog functionality?
Yes, MAX6316LUK46BY-T includes a watchdog timer with a typical timeout period of 1.6s, indicated by the "Y" suffix in the part number. The watchdog is enabled via the WDI pin and resets the device if no edge transition occurs within the timeout window. It can be disabled by leaving WDI unconnected or three-stating the driving source.
What is the reset output configuration of MAX6316LUK46BY-T?
MAX6316LUK46BY-T uses an active-low push/pull reset output (designated by the "L" in MAX6316L), meaning the RESET pin actively drives low during reset assertion and actively drives high when deasserted. It does not require an external pullup resistor and can source/sink up to 1.2mA at VCC ≥ 2.7V.
Is MAX6316LUK46BY-T qualified for automotive applications?
Yes, MAX6316LUK46BY-T is AEC-Q100 qualified (Grade 1), tested for operation from –40°C to +125°C and validated for reliability in automotive environments. Its immunity to short VCC transients and guaranteed reset validity down to VCC = 1V make it suitable for ECU, body control, and infotainment subsystems.
What are the key timing parameters for MAX6316LUK46BY-T's reset behavior?
MAX6316LUK46BY-T provides a minimum reset active timeout of 140ms (denoted by "C" suffix), a VCC-to-RESET delay of 40µs during power-down, and a manual reset propagation delay of 230ns at VCC = 5V. These values ensure proper synchronization with microprocessor power-up sequences and fast response to MR input transitions.
MAX6316LUK46BY-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:
- 4.63V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 20ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6316LUK46BY-T FAQ
1.How can I place an order for MAX6316LUK46BY-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6316LUK46BY-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 MAX6316LUK46BY-T reliable?
The price and inventory of MAX6316LUK46BY-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6316LUK46BY-T is usually 5 days.
3.What payment methods are accepted for MAX6316LUK46BY-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6316LUK46BY-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6316LUK46BY-T?
MAX6316LUK46BY-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6316LUK46BY-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 MAX6316LUK46BY-T?
For technical support, including MAX6316LUK46BY-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6316LUK46BY-T requirements.
6.How does Aetrix verify that MAX6316LUK46BY-T is sourced from the original manufacturer or authorized distributors?
All MAX6316LUK46BY-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 MAX6316LUK46BY-T meets industry standards.
7.What is the process for return or replacement of MAX6316LUK46BY-T?
All MAX6316LUK46BY-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6316LUK46BY-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 MAX6316LUK46BY-T part is unused and in its original packaging.
Return procedure for MAX6316LUK46BY-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6316LUK46BY-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…
