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Analog Devices Inc./Maxim Integrated MAX6307UK47D4-T
- Part No.:
- MAX6307UK47D4-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6307UK47D4-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,230
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Product details
Overview
MAX6307UK47D4-T from Maxim Integrated is a 5-pin SOT23 programmable supervisory IC that monitors VCC (factory-set 4.7V threshold), an adjustable undervoltage input (RST IN), and an adjustable overvoltage input (OVRST IN), asserting an active-low open-drain RESET output when any monitored supply deviates. It features 1120ms minimum reset timeout, 8µA supply current, and guaranteed RESET validity down to VCC = 1V. Used in multivoltage embedded systems for reliable power-up/brownout reset control.
For engineers reviewing the MAX6307UK47D4-T datasheet, MAX6307UK47D4-T pinout, MAX6307UK47D4-T application, or MAX6307UK47D4-T equivalent, key selection considerations include its dual external reset inputs (RST IN/OVRST IN), factory-trimmed 4.7V VCC threshold with ±2.5% tolerance over temperature, 1120ms timeout, SOT23-5 package compatibility, and immunity to fast VCC transients up to 100V/µs.
Technical Context
The MAX6307UK47D4-T implements a triple-monitor architecture: internal factory-trimmed resistor divider sets nominal 4.7V VCC reset threshold; RST IN compares external voltage against 1.23V reference via user-defined resistor divider; OVRST IN similarly enables overvoltage detection using same reference. All three comparators feed a shared reset generator with programmable timeout.
Its open-drain RESET output requires an external pull-up and remains valid down to VCC = 1V; manual reset is not present (distinguishing it from MAX6306/MAX6309/MAX6312). The device operates from VCC = (VTH + 2.5%) to +5.5V - i.e., ≥4.818V for this 4.7V variant - and guarantees reset assertion during brownouts while rejecting transients ≤100V/µs slew rate.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 4.7V nominal, ±2.5% over -40°C to +85°C - ensures reliable 5V rail monitoring with margin against ripple and drift |
| Reset Timeout Period | 1120ms minimum - provides sufficient hold time for slow-starting microcontrollers and peripherals |
| Supply Current | 8µA typical at +25°C - enables battery-backed operation in portable equipment |
| Operating VCC Range | 4.818V to 5.5V - defined by VTH + 2.5% lower bound, preventing false resets near threshold |
| RST IN / OVRST IN Threshold | 1.23V reference with ±0.03V hysteresis - supports precise external voltage monitoring via resistor dividers |
| RESET Output Type | Active-low open-drain - allows wired-OR configuration and interface with bidirectional µP reset pins |
| Transient Immunity | Immune to VCC transients ≤100V/µs - eliminates spurious resets from switching noise or ESD coupling |
Pinout & Package
MAX6307UK47D4-T is housed in a RoHS-compliant 5-pin SOT23 package (outline 21-0057, land pattern 90-0174), measuring 2.9mm × 1.6mm × 1.1mm, suitable for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low open-drain reset output | Drives low during fault conditions; requires external pull-up; valid down to VCC = 1V |
| 2 - GND | System ground reference | Return path for all internal comparators and reset generator; must be low-impedance |
| 3 - OVRST IN | Adjustable overvoltage reset comparator input | Asserts reset when external voltage exceeds threshold set by resistor divider to 1.23V reference |
| 4 - RST IN | Adjustable undervoltage reset comparator input | Asserts reset when external voltage falls below threshold set by resistor divider to 1.23V reference |
| 5 - VCC | Main supply and primary monitored rail | Supplies internal circuitry and feeds factory-trimmed divider for 4.7V reset detection |
Key Features
| Feature | Design Value |
|---|---|
| Triple independent monitoring | VCC (4.7V), RST IN (user-configurable undervoltage), OVRST IN (user-configurable overvoltage) - enables comprehensive power integrity coverage in single IC |
| Factory-trimmed precision threshold | 4.7V ±2.5% over full temperature range - eliminates need for external trimming components and improves system-level accuracy |
| No external timing components | 1120ms factory-programmed timeout - removes capacitor tolerance and aging concerns in reset timing path |
| Low-power operation | 8µA supply current - extends battery life in portable instrumentation and remote sensors |
| Transient-hardened design | Guaranteed immunity to VCC transients ≤100V/µs - prevents false resets in electrically noisy industrial environments |
Applications
| Industrial PLC Power Sequencing | Medical Infusion Pump Supervision |
|---|---|
Use Scenario: Monitors main 5V DC-DC output, auxiliary 3.3V logic rail (via RST IN), and backup battery voltage (via OVRST IN) during power transitions. IC Role / Device Role / Timing Role: Triple-input supervisory IC providing coordinated reset assertion across multiple rails with 1120ms hold time. Use Value: Prevents firmware corruption during brownout by holding µC in reset until all supplies stabilize, leveraging factory-trimmed 4.7V threshold for consistent 5V monitoring. |
Use Scenario: Ensures safe shutdown when main AC adapter fails and battery voltage drops below safe operating level, while detecting overvoltage on charging circuit. IC Role / Device Role / Timing Role: Dual-threshold supervisor using RST IN for battery undervoltage and OVRST IN for charger overvoltage, with VCC monitoring 5V system rail. Use Value: Enables fail-safe operation by asserting reset before battery depletion or charger fault causes unsafe motor actuation - critical for IEC 60601 compliance. |
| Automotive Body Control Module | Test Equipment Power Validation |
Use Scenario: Validates 5V microcontroller supply (VCC), 12V ignition-sensed rail (RST IN), and alternator overvoltage condition (OVRST IN) in harsh automotive environment. IC Role / Device Role / Timing Role: High-immunity reset IC rejecting load-dump transients while monitoring three distinct voltage domains. Use Value: Maintains system reliability under ISO 7637-2 pulse 5a stress due to inherent 100V/µs transient rejection and guaranteed operation down to VCC = 1V. |
Use Scenario: Verifies stable 5V output of bench power supply before enabling DUT test sequence; detects both under- and overvoltage faults simultaneously. IC Role / Device Role / Timing Role: Precision reference-based supervisor using internal 4.7V threshold and external dividers for calibrated fault detection windows. Use Value: Eliminates false triggers during supply ramp-up by combining factory-trimmed threshold accuracy (±2.5%) with adjustable RST IN/OVRST IN hysteresis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triple-input supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6307UK47D3-T | Same 4.7V VCC threshold and pinout, but 140ms reset timeout (vs. 1120ms) | Suitable for faster-booting µCs where extended reset hold is unnecessary | Select when shorter reset duration reduces system startup latency without compromising safety margins |
| TLV809E47DBZR | Single 4.7V VCC monitor only; no RST IN or OVRST IN inputs; SOT23-3 package | Lacks dual external monitoring capability; requires additional ICs for multirail supervision | Choose only if system needs basic 5V reset without auxiliary rail monitoring - lower cost but higher BOM count |
Compared with MAX6307UK47D3-T and TLV809E47DBZR, the MAX6307UK47D4-T uniquely delivers integrated triple-rail supervision in one SOT23-5 device with long 1120ms timeout - reducing component count and PCB area while ensuring robust fault response in complex multivoltage systems.
Availability
MAX6307UK47D4-T is available at Aetrix Electronics and suitable for industrial PLCs, medical infusion pumps, automotive body controllers, and automated test equipment requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6307UK47D4-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 demanding industrial, medical, and automotive applications, emphasizing reliability, low power, and integration.
The MAX6305–MAX6313 family was engineered specifically for multivoltage system supervision, delivering factory-programmable thresholds, dual external monitoring inputs, and transient-hardened reset generation in ultra-small packages.
FAQ
What is the exact factory-set VCC reset threshold for MAX6307UK47D4-T?
The MAX6307UK47D4-T has a nominal VCC reset threshold of 4.70V, with a tolerance of ±2.5% over the full operating temperature range (-40°C to +85°C). This value is factory-trimmed using an internal resistor divider and corresponds to entry "47" in Table 1 of the datasheet. Measured values fall between 4.583V (min) and 4.818V (max) at room temperature, and the deviation remains bounded across temperature.
Does MAX6307UK47D4-T support manual reset functionality?
No, the MAX6307UK47D4-T does not include a manual reset (MR) input. Its pinout consists of RESET, GND, OVRST IN, RST IN, and VCC - omitting MR. This distinguishes it from related parts like MAX6306UK47D4-T or MAX6309UK47D4-T, which integrate MR. For manual reset capability, a discrete pushbutton must be implemented externally using a separate supervisor or logic circuit.
What are the minimum and maximum VCC supply requirements for reliable operation of MAX6307UK47D4-T?
The MAX6307UK47D4-T requires VCC to be at least VTH + 2.5%, i.e., ≥4.818V (4.7V × 1.025), to ensure proper internal biasing and accurate reset assertion. Its absolute maximum VCC is +5.5V. Operation below 4.818V may result in undefined reset behavior or failure to monitor the 4.7V threshold correctly, as specified in the Electrical Characteristics table under "VCC Range".
How is the 1120ms reset timeout period implemented in MAX6307UK47D4-T?
The 1120ms reset timeout in MAX6307UK47D4-T is factory-programmed and internally generated - no external capacitor or resistor is required. It represents the minimum guaranteed duration that RESET remains asserted after all monitored voltages return above their thresholds. Typical timeout is 1570ms, with a maximum of 2240ms, as confirmed in the Electrical Characteristics table under "Reset Timeout Period tRP, D4".
Can MAX6307UK47D4-T monitor a 3.3V rail directly on the VCC pin?
No, MAX6307UK47D4-T cannot reliably monitor a 3.3V rail on its VCC pin because its minimum operating VCC is VTH + 2.5% = 4.818V. To supervise a 3.3V rail, use the RST IN pin with an external resistor divider configured to present 1.23V to the input when the 3.3V rail reaches the desired trip point (e.g., 3.0V), per the formula VTH = ((R1+R2)/R2) × 1.23V.
MAX6307UK47D4-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:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 4.7V, Adj
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 1.12s Minimum
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6307UK47D4-T FAQ
1.How can I place an order for MAX6307UK47D4-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6307UK47D4-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 MAX6307UK47D4-T reliable?
The price and inventory of MAX6307UK47D4-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6307UK47D4-T is usually 5 days.
3.What payment methods are accepted for MAX6307UK47D4-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6307UK47D4-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6307UK47D4-T?
MAX6307UK47D4-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6307UK47D4-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 MAX6307UK47D4-T?
For technical support, including MAX6307UK47D4-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6307UK47D4-T requirements.
6.How does Aetrix verify that MAX6307UK47D4-T is sourced from the original manufacturer or authorized distributors?
All MAX6307UK47D4-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 MAX6307UK47D4-T meets industry standards.
7.What is the process for return or replacement of MAX6307UK47D4-T?
All MAX6307UK47D4-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6307UK47D4-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 MAX6307UK47D4-T part is unused and in its original packaging.
Return procedure for MAX6307UK47D4-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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