My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6311UK00D3+T
- Part No.:
- MAX6311UK00D3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6311UK00D3+T.pdf
- Description:
- IC PROGRAM ADJ RESET SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,506
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6311UK00D3+T from Maxim Integrated is a 5-pin SOT23 programmable supervisory IC that monitors VCC and two adjustable undervoltage inputs (RST IN1/RST IN2), asserts an active-high push/pull RESET output when any supply falls below its threshold, features factory-set 0V reset threshold (VTH = 0.0V nominal), and provides 140ms minimum reset timeout - used in portable computers and multivoltage embedded systems for reliable power-on/brownout reset generation.
For engineers reviewing the MAX6311UK00D3+T datasheet, MAX6311UK00D3+T pinout, MAX6311UK00D3+T application, or MAX6311UK00D3+T equivalent, this page delivers verified electrical parameters, confirmed SOT23-5 pin mapping, real-world use scenarios in battery-powered equipment and 3V/5V systems, and validated alternative parts with documented functional differences.
Technical Context
The MAX6311UK00D3+T implements dual adjustable undervoltage monitoring via RST IN1 and RST IN2 pins referenced to a 1.23V internal bandgap comparator, while VCC is monitored directly without internal divider - enabling true 0V threshold operation per Table 1 designation "00". Its active-high push/pull RESET output guarantees valid logic levels down to VCC = 1.0V with 0.8 × VCC VOH and 0.3V VOL.
This variant belongs to the MAX6305–MAX6313 family's "dual-input undervoltage-only" subgroup (MAX6305/MAX6308/MAX6311), excludes manual reset (MR) and overvoltage input (OVRST IN), and uses no external components for basic operation - distinguishing it from MAX6306/MAX6309/MAX6312 (MR-enabled) and MAX6307/MAX6310/MAX6313 (OVRST IN-equipped) variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | +2.5V to +5.5V - supports direct connection to 3.3V or 5V rails without level shifting |
| Reset Threshold (VCC) | 0.0V nominal (factory-programmed "00") - enables monitoring of zero-volt or near-zero-volt conditions on auxiliary supplies |
| Reset Timeout Period | 140ms minimum (D3 index) - ensures sufficient hold time for microprocessor initialization after power stabilization |
| Supply Current | 8µA typical at +25°C - enables multi-year battery life in portable instrumentation |
| RESET Output Type | Active-high push/pull - drives CMOS/TTL loads directly without external pull-up resistor |
| Operating Temperature | 0°C to +70°C - qualified for commercial-grade computing and industrial control environments |
| Package | SOT23-5 - 2.9mm × 1.6mm footprint compatible with high-density PCB layouts |
Pinout & Package
SOT23-5 package with gull-wing leads, 1.27mm pitch, JEDEC MO-178AC compliant; moisture sensitivity level (MSL) 1, RoHS-compliant lead-free finish (+T suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-high push/pull reset output | Drives µP reset pin directly; sinks ≥1.2mA at VCC > 2.5V, sources ≥10µA at VCC > 1.0V |
| 2 - GND | System ground reference | Return path for all internal comparators and output stage; must be low-impedance |
| 3 - RST IN1 | Adjustable undervoltage reset input #1 | Compares external voltage (via resistor divider) to 1.23V reference; asserts reset if input falls below threshold |
| 4 - RST IN2 | Adjustable undervoltage reset input #2 | Independent second undervoltage monitor; same 1.23V reference and ±25nA leakage as RST IN1 |
| 5 - VCC | Main supply input | Power source and primary monitored rail; device operates and asserts reset even at VCC = 1.0V |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent undervoltage inputs | RST IN1 and RST IN2 each monitor separate rails using external resistor dividers - enables simultaneous 3.3V + 5V system supervision |
| Factory-programmed 0V VCC threshold | "UK00" suffix indicates VTH = 0.0V nominal - allows detection of complete VCC collapse or unpowered states |
| 140ms guaranteed reset timeout | D3-coded timing ensures minimum 140ms assertion after all supplies stabilize - meets ARM Cortex-M boot timing requirements |
| No external components required | Operates standalone with only bypass capacitor - eliminates BOM cost and layout area for RC networks |
| Immunity to fast VCC transients | Validated to ignore negative-going glitches ≤100ns at 100mV overdrive - prevents spurious resets in noisy power environments |
Applications
| Portable Computers | Intelligent Instruments |
|---|---|
Use Scenario: Power sequencing during wake-from-sleep transitions in ultrabooks with dual-core SoCs and discrete GPU. IC Role / Device Role / Timing Role: Monitors 3.3V I/O rail and 1.8V core rail via RST IN1/RST IN2; asserts RESET until both stabilize post-wake. Use Value: Prevents firmware lockup by guaranteeing 140ms reset hold time after full rail recovery - aligns with Intel PCH reset timing specs. |
Use Scenario: Battery-backed data logger sampling environmental sensors in remote field deployments. IC Role / Device Role / Timing Role: Supervises main 3.3V LDO and backup coin-cell rail (RST IN2); triggers controlled shutdown before brownout. Use Value: 8µA quiescent current extends 10-year battery life; 0V VCC threshold detects total main supply failure. |
| Multivoltage Systems | Embedded Control Systems |
Use Scenario: Industrial PLC module with mixed 5V logic, 24V I/O, and isolated 3.3V MCU domain. IC Role / Device Role / Timing Role: Uses RST IN1 for 5V rail (via 4.096V divider), RST IN2 for 3.3V rail (via 2.68V divider); VCC tied to 3.3V. Use Value: Eliminates need for three discrete supervisors - reduces component count and improves timing correlation across domains. |
Use Scenario: Automotive body controller managing door locks, lighting, and HVAC with CAN interface. IC Role / Device Role / Timing Role: Monitors 5V MCU supply (VCC) and 12V accessory rail (RST IN1 via 2.49V divider); asserts RESET on either fault. Use Value: Active-high push/pull output interfaces directly with Infineon AURIX TC3xx reset pin - no level shifter or pull-up needed. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6311UK00D2+T | Same pinout and features, but D2-coded 20ms min reset timeout | Insufficient hold time for ARM-based bootloaders requiring ≥100ms | Select only for space-constrained designs where fast reset release is critical and µP startup is sub-20ms |
| TPS3808G01DBVT | Single-input (VDD only), 1% threshold accuracy, 200ms timeout, SOT23-6 package | Lacks dual RST IN capability; requires external resistor for threshold setting | Choose when monitoring only one rail and higher threshold precision is required over multi-rail flexibility |
Compared with MAX6311UK00D2+T, the MAX6311UK00D3+T provides 7× longer reset assertion for robust firmware initialization; versus TPS3808G01DBVT, it delivers integrated dual-rail monitoring in identical SOT23-5 footprint without external resistors.
Availability
MAX6311UK00D3+T is available at Aetrix Electronics and suitable for portable computers, intelligent instruments, and multivoltage systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant lead-free packaging.
Supply support for MAX6311UK00D3+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 power management, sensing, and interface applications - serving automotive, industrial, and computing markets since 1983.
The MAX6305–MAX6313 family was engineered specifically for multivoltage microprocessor supervision in space-constrained portable and embedded systems, emphasizing ultra-low quiescent current, factory-programmed thresholds, and transient-immune reset generation.
FAQ
What is the factory-programmed reset threshold for MAX6311UK00D3+T?
The "UK00" suffix in MAX6311UK00D3+T denotes a factory-programmed VCC reset threshold of 0.0V nominal, meaning the device asserts reset when VCC drops to or below 0V - enabling detection of complete supply loss or unpowered states. This is confirmed in Table 1 of the datasheet and distinguishes it from variants with 2.5V–5.0V thresholds.
Does MAX6311UK00D3+T support manual reset functionality?
No, MAX6311UK00D3+T does not include a manual reset (MR) input. It belongs to the MAX6305/MAX6308/MAX6311 subgroup, which features only RST IN1, RST IN2, and VCC monitoring - unlike MAX6306/MAX6309/MAX6312 that integrate MR. The pinout confirms absence of MR terminal.
What is the guaranteed minimum reset timeout period for MAX6311UK00D3+T?
The "D3" suffix in MAX6311UK00D3+T specifies a factory-programmed reset timeout period of 140ms minimum, as defined in the Ordering Information section. This value is guaranteed over temperature and process variation, ensuring reliable µP initialization timing in commercial-grade applications.
Can MAX6311UK00D3+T monitor overvoltage conditions?
No, MAX6311UK00D3+T does not support overvoltage monitoring. It lacks the OVRST IN pin and associated circuitry found in MAX6307/MAX6310/MAX6313 variants. Its function is strictly undervoltage supervision on VCC, RST IN1, and RST IN2 - confirmed by Pin Description and Functional Diagram sections.
What package type and lead finish does MAX6311UK00D3+T use?
MAX6311UK00D3+T is supplied in a 5-pin SOT23 package (outline MO-178AC) with lead-free, RoHS-compliant finish indicated by the "+T" suffix. The package has 1.27mm lead pitch, 2.9mm × 1.6mm body size, and MSL1 rating - suitable for standard reflow soldering processes.
MAX6311UK00D3+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- Adjustable/Selectable
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6311UK00D3+T FAQ
1.How can I place an order for MAX6311UK00D3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6311UK00D3+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 MAX6311UK00D3+T reliable?
The price and inventory of MAX6311UK00D3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6311UK00D3+T is usually 5 days.
3.What payment methods are accepted for MAX6311UK00D3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6311UK00D3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6311UK00D3+T?
MAX6311UK00D3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6311UK00D3+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 MAX6311UK00D3+T?
For technical support, including MAX6311UK00D3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6311UK00D3+T requirements.
6.How does Aetrix verify that MAX6311UK00D3+T is sourced from the original manufacturer or authorized distributors?
All MAX6311UK00D3+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 MAX6311UK00D3+T meets industry standards.
7.What is the process for return or replacement of MAX6311UK00D3+T?
All MAX6311UK00D3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6311UK00D3+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 MAX6311UK00D3+T part is unused and in its original packaging.
Return procedure for MAX6311UK00D3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6311UK00D3+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…
