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Analog Devices Inc./Maxim Integrated MAX6306UK47D2+T
- Part No.:
- MAX6306UK47D2+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6306UK47D2+T.pdf
- Description:
- IC PROGRAM 4.700V RESET SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,720
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Product details
Overview
The MAX6306UK47D2+T from Maxim Integrated is a precision 5-pin SOT23 programmable reset IC designed to monitor VCC supply voltage and assert an active-low push/pull RESET signal when VCC falls below 4.7V ±2.5% (at -40°C to +85°C), with factory-programmed 20ms minimum reset timeout, manual reset input (MR), and guaranteed RESET validity down to VCC = 1V. It operates from 2.5V to 5.5V, draws only 8µA supply current, and is immune to fast VCC transients - ideal for multivoltage embedded control systems requiring reliable power-on and brownout reset.
For engineers reviewing the MAX6306UK47D2+T datasheet, MAX6306UK47D2+T pinout, MAX6306UK47D2+T application, or MAX6306UK47D2+T equivalent, key selection considerations include its factory-set 4.7V reset threshold, 20ms timeout, MR-enabled reset initiation, push/pull output drive capability, and SOT23-5 package compatibility with space-constrained portable and industrial designs.
Technical Context
The MAX6306UK47D2+T monitors VCC via an internal factory-trimmed resistor divider to detect undervoltage conditions relative to its 4.7V nominal threshold, with ±2.5% tolerance over -40°C to +85°C. Its reset generator incorporates a precise timeout circuit that holds RESET asserted for ≥20ms after VCC recovers above threshold.
It features a dedicated manual-reset input (MR) with internal 63.5kΩ pull-up, TTL/CMOS-compatible logic thresholds, and guaranteed 1.5µs minimum pulse width immunity. The push/pull RESET output sinks up to 3.2mA at VCC > 4.25V and sources 0.8×VCC at VCC > 2.5V, enabling direct interface with microcontroller reset pins without external pull-ups.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 4.7V ±2.5% over -40°C to +85°C - ensures reliable detection of 5V rail collapse before µP malfunction |
| Reset Timeout Period | 20ms minimum - guarantees sufficient hold time for microprocessor initialization sequences |
| Supply Current | 8µA typical at +25°C - enables battery-powered operation for >10 years in low-duty-cycle monitoring |
| RESET Output Type | Active-low push/pull - eliminates need for external pull-up resistor and supports bidirectional µP reset I/O |
| MR Input Logic | VIL ≤ 0.3×VCC, VIH ≥ 0.7×VCC - compatible with 3.3V and 5V logic families without level shifting |
| Operating Voltage Range | 2.5V to 5.5V - supports dual-rail systems (e.g., 3.3V/5V) and brownout detection down to 1V VCC |
| Package | SOT23-5 - 2.9mm × 1.6mm footprint ideal for compact PCB layouts in portable equipment |
Pinout & Package
SOT23-5 surface-mount package with gull-wing leads, RoHS-compliant lead-free finish (+T suffix), 1.3mm height, and JEDEC-standard footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-low push/pull reset output - drives µP reset pin directly; sinks 3.2mA, sources 0.8×VCC |
| 2 | GND | System ground reference - must be connected to lowest-impedance ground plane for noise immunity |
| 3 | RST IN | Adjustable undervoltage reset input - accepts external resistor divider to monitor secondary supply (e.g., 3.3V) |
| 4 | MR | Manual reset input - logic-low assertion forces reset; internal 63.5kΩ pull-up allows NC or VCC tie |
| 5 | VCC | Main supply input - monitored internally for 4.7V threshold; also powers internal circuitry |
Key Features
| Feature | Design Value |
|---|---|
| Precision factory-set VCC threshold | 4.7V ±2.5% over full temperature range - eliminates calibration overhead in production |
| Guaranteed RESET validity to VCC = 1V | Ensures deterministic reset state during deep brownout - prevents µP lockup below 1.5V |
| Immunity to short VCC transients | Rejects <10µs glitches at 50mV overdrive - avoids spurious resets in noisy power environments |
| No external components required | Self-contained reset solution - reduces BOM count and layout area vs. discrete comparator designs |
| Manual reset input with internal pull-up | 63.5kΩ internal resistor - enables momentary switch interface without external biasing |
Applications
| Industrial PLC Controller | Medical Patient Monitor |
|---|---|
Use Scenario: Monitors 5V main rail and 3.3V logic rail in a DIN-rail mounted programmable logic controller exposed to 24V field wiring noise. IC Role / Device Role / Timing Role: Primary VCC supervisor with secondary RST IN monitoring - asserts RESET on either rail failure and holds for 20ms to ensure FPGA configuration stability. Use Value: Prevents corrupted I/O state during transient-induced brownouts; MR pin enables field-service firmware reload without power cycle. |
Use Scenario: Embedded in a battery-powered bedside vital signs monitor requiring fail-safe restart after Li-ion voltage sag during high-current sensor activation. IC Role / Device Role / Timing Role: Dual-supply reset supervisor - detects 5V system rail collapse and uses RST IN to track 3.3V ADC reference stability. Use Value: Guarantees clean µP reboot before analog signal corruption occurs; 8µA quiescent current extends battery life beyond 18 months. |
| Automotive Infotainment Head Unit | Network Router Power Management |
Use Scenario: Supervises 5V USB-C PD input and 3.3V SoC core rail in a vehicle infotainment module subject to load-dump transients. IC Role / Device Role / Timing Role: VCC monitor with MR override - triggers controlled shutdown on 5V rail drop and allows service-mode reset via CAN command. Use Value: Survives ISO 7637-2 pulse 5a (120V/100ms); push/pull RESET drives automotive-grade µP without external pull-up. |
Use Scenario: Ensures reliable boot sequencing in a multi-core network router where 5V auxiliary and 3.3V CPU rails must stabilize before PCIe link training. IC Role / Device Role / Timing Role: Primary reset generator with RST IN monitoring - coordinates power-good timing across distributed DC/DC converters. Use Value: 20ms timeout aligns with IEEE 802.3ab PHY startup; MR pin enables remote reset via management controller GPIO. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar reset supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6306UK47D3+T | Same 4.7V threshold and MR input, but 140ms min reset timeout vs. 20ms | Better suited for systems requiring longer reset hold times (e.g., FPGA configuration, EEPROM write cycles) | Select when extended reset duration is needed; not drop-in for timing-critical µP boot paths |
| TLV803EB29DBZR | 4.63V threshold (±1%), 200ms timeout, open-drain output, no MR input, 0.9µA supply current | Lacks manual reset and push/pull drive; optimized for ultra-low-power battery backup, not active-system supervision | Choose only if MR and active-drive are unnecessary and sub-1µA quiescent current is mandatory |
Compared with MAX6306UK47D2+T, the D3 variant trades faster reset release for robustness in complex initialization, while TLV803EB29DBZR sacrifices supervision flexibility for extreme low-power operation - neither offers pin-compatible MR or push/pull functionality.
Availability
The MAX6306UK47D2+T is available at Aetrix Electronics and suitable for industrial PLC controllers, medical patient monitors, automotive infotainment head units, network routers, and portable instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6306UK47D2+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 high-performance analog, mixed-signal, and power management ICs for industrial, automotive, communications, and computing markets.
The MAX6305–MAX6313 family was designed specifically for multivoltage microprocessor supervisory applications requiring factory-programmable thresholds, manual reset, and transient-immune operation in compact SOT23 packages.
FAQ
What is the exact reset threshold voltage of the MAX6306UK47D2+T?
The MAX6306UK47D2+T has a factory-trimmed nominal VCC reset threshold of 4.7V, with guaranteed tolerance of ±2.5% over the full operating temperature range (-40°C to +85°C). At +25°C, the typical threshold is 4.700V, and the device remains within ±1.5% at room temperature per Table 1 in the datasheet. This precision eliminates need for external trimming resistors.
Does the MAX6306UK47D2+T support manual reset functionality?
Yes, the MAX6306UK47D2+T includes a dedicated MR (manual reset) input on pin 4. A logic-low pulse ≥1.5µs on MR forces RESET assertion for the full timeout period (20ms minimum) after MR returns high. An internal 63.5kΩ pull-up resistor allows MR to be left unconnected or tied to VCC when unused, simplifying design.
What is the RESET output structure of the MAX6306UK47D2+T?
The MAX6306UK47D2+T features an active-low push/pull RESET output on pin 1. Unlike open-drain variants, it actively drives both high and low states: sinking up to 3.2mA at VCC > 4.25V and sourcing 0.8×VCC at VCC > 2.5V. This eliminates external pull-up resistors and enables direct connection to bidirectional µP reset pins.
Can the MAX6306UK47D2+T monitor a second voltage rail?
Yes, the MAX6306UK47D2+T includes an adjustable RST IN input (pin 3) that accepts an external resistor divider to monitor a secondary supply such as 3.3V. When the divided voltage falls below 1.23V (±0.06V), the device asserts RESET regardless of VCC status - enabling true dual-rail supervision in multivoltage systems.
What is the supply current consumption of the MAX6306UK47D2+T?
The MAX6306UK47D2+T draws only 8µA typical supply current at +25°C and VCC = 5.5V, with a maximum of 16µA over temperature. This ultra-low quiescent current makes it suitable for battery-backed applications where runtime extension is critical, such as portable medical devices and remote sensors.
MAX6306UK47D2+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:
- 4.7V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 20ms Minimum
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6306UK47D2+T FAQ
1.How can I place an order for MAX6306UK47D2+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6306UK47D2+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 MAX6306UK47D2+T reliable?
The price and inventory of MAX6306UK47D2+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6306UK47D2+T is usually 5 days.
3.What payment methods are accepted for MAX6306UK47D2+T?
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4.How is shipping managed for MAX6306UK47D2+T?
MAX6306UK47D2+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6306UK47D2+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 MAX6306UK47D2+T?
For technical support, including MAX6306UK47D2+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6306UK47D2+T requirements.
6.How does Aetrix verify that MAX6306UK47D2+T is sourced from the original manufacturer or authorized distributors?
All MAX6306UK47D2+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 MAX6306UK47D2+T meets industry standards.
7.What is the process for return or replacement of MAX6306UK47D2+T?
All MAX6306UK47D2+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6306UK47D2+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 MAX6306UK47D2+T part is unused and in its original packaging.
Return procedure for MAX6306UK47D2+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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