My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6306UK46D3+T
- Part No.:
- MAX6306UK46D3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6306UK46D3+T.pdf
- Description:
- IC PROGRAM 4.630V RESET SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,950
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
The MAX6306UK46D3+T from Maxim Integrated is a precision CMOS microprocessor supervisory circuit in SOT23-5 package, designed to monitor VCC supply and assert reset when voltage falls below 4.63V (±2.5% over temperature), with factory-programmed 140ms minimum reset timeout, manual-reset input, and guaranteed RESET validity down to VCC = 1V. It targets multivoltage embedded systems requiring reliable power-on and brownout reset.
For engineers reviewing the MAX6306UK46D3+T datasheet, MAX6306UK46D3+T pinout, MAX6306UK46D3+T application, or MAX6306UK46D3+T equivalent, key selection criteria include its 4.63V factory-trimmed threshold, 140ms timeout, manual-reset capability, immunity to fast VCC transients, and operation across 0°C to +70°C industrial temperature range.
Technical Context
This device monitors only the VCC supply via an internal factory-trimmed resistor divider-no external resistors required-and includes a dedicated manual-reset (MR) input with internal 63.5kΩ pull-up. It features push/pull active-low RESET output capable of sinking 3.2mA at VCC > 4.25V.
Reset assertion is guaranteed for VCC ≥ 1V, and the device ignores short-duration negative-going VCC transients up to ~280µs (at 100mV overdrive). Its ±2.5% reset threshold tolerance is specified over full -40°C to +85°C for extended-temp variants, but MAX6306UK46D3+T is rated 0°C to +70°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 4.63V nominal, ±2.5% over 0°C to +70°C - sets precise undervoltage detection point for 5V/3.3V systems |
| Reset Timeout Period | 140ms minimum - ensures µP remains held in reset long enough for stable power rail recovery |
| Supply Current | 8µA typical at +25°C - enables use in battery-powered portable equipment |
| RESET Output Type | Push/pull active-low - drives reset line directly without external pull-up, sinks 3.2mA at VCC > 4.25V |
| Manual-Reset Input | Internal 63.5kΩ pull-up, TTL/CMOS-compatible - allows momentary switch or logic control without external components |
| Operating Temperature | 0°C to +70°C - suitable for commercial and industrial embedded applications with moderate thermal environments |
| VCC Range | 4.74V to +5.5V (minimum operating VCC = VTH + 2.5%) - ensures valid operation only when supply exceeds reset threshold margin |
Pinout & Package
SOT23-5 surface-mount package (2.9mm × 1.6mm × 1.1mm), lead-free, RoHS-compliant, tape-and-reel delivery.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low push/pull reset output | Drives microprocessor reset pin low during fault; no external pull-up needed; sinks 3.2mA at VCC > 4.25V |
| 2 - GND | System ground reference | Return path for all internal comparators and output stage; must be low-impedance connection |
| 3 - RST IN | Adjustable undervoltage reset input | Accepts external resistor divider to monitor secondary supply; asserts reset if input falls below 1.23V threshold |
| 4 - MR | Manual-reset input | Pull low to force reset; internal 63.5kΩ pull-up allows direct switch-to-ground interface; no debounce required |
| 5 - VCC | Main supply input and monitored rail | Power source and primary voltage under supervision; internal divider sets 4.63V reset point |
Key Features
| Feature | Design Value |
|---|---|
| Factory-set 4.63V reset threshold | Eliminates external resistor network and calibration effort for 5V system monitoring |
| 140ms minimum reset timeout | Ensures sufficient hold time for power rail stabilization before µP release, avoiding premature boot failure |
| Immunity to fast VCC transients | Rejects sub-300µs negative glitches - prevents spurious resets in noisy or switching-power environments |
| Guaranteed RESET validity to VCC = 1V | Provides deterministic reset state during deep brownout, critical for fail-safe shutdown sequencing |
| No external components required | Reduces BOM count, PCB area, and design validation overhead for basic VCC supervision |
Applications
| Industrial PLC Controller | Portable Medical Monitor |
|---|---|
Use Scenario: Monitors 5V main rail in programmable logic controller during AC mains fluctuations and EMI-rich factory floor operation. IC Role / Device Role / Timing Role: Primary VCC supervisor asserting active-low reset to ARM Cortex-M7 MCU upon undervoltage event. Use Value: Prevents corrupted I/O register writes and firmware lockup during 10–200ms brownouts using guaranteed 140ms timeout and transient immunity. | Use Scenario: Ensures safe boot and shutdown sequencing in handheld ECG device powered by single-cell Li-ion battery (3.0–4.2V). IC Role / Device Role / Timing Role: Dual-role supervisor: monitors regulated 5V rail and accepts manual reset from front-panel button via MR pin. Use Value: Enables user-initiated recalibration reset without firmware intervention, while maintaining 4.63V trip point for clean 5V LDO output supervision. |
| Automotive Infotainment Head Unit | Network Edge Router Power Management |
Use Scenario: Supervises 5V supply derived from vehicle battery (9–16V input) during cold-crank and load-dump transients. IC Role / Device Role / Timing Role: VCC monitor with manual-reset override for service mode; RST IN used to supervise auxiliary 3.3V rail. Use Value: Delivers robust reset assertion despite 50ms dips to 4.5V, leveraging 4.63V threshold hysteresis and 140ms hold time to avoid false triggers. | Use Scenario: Manages power sequencing for multi-rail FPGA-based packet processor (1.2V core, 3.3V I/O, 5V PHY). IC Role / Device Role / Timing Role: Primary 5V supervisor coordinating with secondary supervisors via RST IN; MR pin tied to system watchdog IC. Use Value: Provides deterministic 140ms reset window aligned with FPGA configuration clock startup timing, ensuring bitstream integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6306UK46D2+T | Same 4.63V threshold, but 20ms min reset timeout vs. 140ms | Shorter hold time insufficient for slow-ramping supplies or complex boot sequences | Select only where rapid reset release is required and power rails stabilize within 20ms |
| TLV803EB29DBVR | 4.63V threshold, 140ms timeout, SOT23-5, but open-drain output and no MR input | Lacks manual-reset functionality; requires external pull-up; less flexible for field-service interfaces | Choose when MR is unused and cost sensitivity outweighs feature parity |
Compared with MAX6306UK46D2+T, the MAX6306UK46D3+T provides longer reset assertion for robust boot reliability; compared with TLV803EB29DBVR, it adds MR capability and push/pull drive-critical for noise-sensitive or manually serviced systems.
Availability
MAX6306UK46D3+T is available at Aetrix Electronics and suitable for industrial PLC controllers, portable medical monitors, automotive infotainment head units, network edge routers, and multivoltage embedded systems requiring stable component supply with guaranteed lead-free compliance and tape-and-reel packaging.
Supply support for MAX6306UK46D3+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, sensing, and interface applications, with emphasis on high-reliability industrial and computing solutions.
The MAX6305–MAX6313 family delivers programmable reset supervision for multivoltage systems, targeting applications where simultaneous monitoring of VCC and auxiliary rails-plus manual reset and transient immunity-is essential for system-level robustness.
FAQ
What is the exact factory-programmed reset threshold voltage for MAX6306UK46D3+T?
The MAX6306UK46D3+T has a factory-trimmed nominal reset threshold of 4.63V, with ±2.5% tolerance over its 0°C to +70°C operating temperature range. This value corresponds to the "46" in the part number per Table 1 of the datasheet, and is set by an internal precision resistor divider-no external components are needed to achieve this trip point.
Does MAX6306UK46D3+T support manual reset, and how is it implemented?
Yes, MAX6306UK46D3+T includes a dedicated MR (manual-reset) input on Pin 4. It features an internal 63.5kΩ pull-up resistor, allowing direct connection of a normally-open momentary switch to ground. When pulled low, MR forces RESET assertion for the full 140ms timeout period-even after MR returns high-ensuring reliable user-initiated reset without external circuitry.
What is the minimum VCC voltage required for MAX6306UK46D3+T to guarantee valid RESET output?
The MAX6306UK46D3+T guarantees valid RESET output down to VCC = 1V. Below this level, push/pull drive capability degrades significantly. For applications requiring asserted RESET down to 0V, an external 100kΩ pull-down resistor from RESET to GND is recommended-though MAX6306UK46D3+T itself does not guarantee operation below 1V.
How does MAX6306UK46D3+T handle fast voltage transients on the VCC line?
MAX6306UK46D3+T is specifically designed to ignore fast negative-going VCC transients. At 100mV overdrive (i.e., VCC dipping 100mV below 4.63V), it tolerates transients up to ~280µs without issuing a reset pulse. This immunity is achieved through internal filtering and comparator hysteresis, making MAX6306UK46D3+T suitable for electrically noisy environments like motor drives or switching power supplies.
What package type and RoHS status does MAX6306UK46D3+T use?
MAX6306UK46D3+T is supplied in a 5-pin SOT23 package (2.9mm × 1.6mm × 1.1mm) with lead-free, RoHS-compliant construction. The "+T" suffix explicitly denotes lead-free tape-and-reel packaging per Maxim's ordering convention, and the device meets JEDEC J-STD-020 reflow profile requirements for Pb-free assembly.
MAX6306UK46D3+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:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 4.63V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6306UK46D3+T FAQ
1.How can I place an order for MAX6306UK46D3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6306UK46D3+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 MAX6306UK46D3+T reliable?
The price and inventory of MAX6306UK46D3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6306UK46D3+T is usually 5 days.
3.What payment methods are accepted for MAX6306UK46D3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6306UK46D3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6306UK46D3+T?
MAX6306UK46D3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6306UK46D3+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 MAX6306UK46D3+T?
For technical support, including MAX6306UK46D3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6306UK46D3+T requirements.
6.How does Aetrix verify that MAX6306UK46D3+T is sourced from the original manufacturer or authorized distributors?
All MAX6306UK46D3+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 MAX6306UK46D3+T meets industry standards.
7.What is the process for return or replacement of MAX6306UK46D3+T?
All MAX6306UK46D3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6306UK46D3+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 MAX6306UK46D3+T part is unused and in its original packaging.
Return procedure for MAX6306UK46D3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6306UK46D3+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…
