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Analog Devices Inc./Maxim Integrated MAX6307UK27D3-T
- Part No.:
- MAX6307UK27D3-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6307UK27D3-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,909
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Product details
Overview
MAX6307UK27D3-T from Maxim Integrated is a 5-pin SOT23 programmable supervisory IC that monitors VCC (factory-set 2.7V reset threshold), an adjustable undervoltage input (RST IN), and an adjustable overvoltage input (OVRST IN) to assert a push/pull active-low RESET output. It features 140ms minimum reset timeout, 8µA supply current, and guaranteed RESET validity down to VCC = 1V. It is used in multivoltage embedded systems requiring robust power-up/brownout protection.
For engineers reviewing the MAX6307UK27D3-T datasheet, MAX6307UK27D3-T pinout, MAX6307UK27D3-T application, or MAX6307UK27D3-T equivalent, this page delivers verified technical context, exact pin functions, real-world use scenarios, and validated alternative options for dual-supply monitoring in portable and industrial control designs.
Technical Context
The MAX6307UK27D3-T implements a triple-monitor architecture: internal factory-trimmed voltage divider sets VCC reset at 2.7V ±2.5%, while external resistor dividers program RST IN (undervoltage) and OVRST IN (overvoltage) thresholds referenced to a 1.23V internal bandgap. Its push/pull RESET output sources/sinks ≥1.2mA at VCC > 2.5V and remains valid down to VCC = 1V.
It uses a precision internal timer to enforce a fixed 140ms (min) reset timeout after all monitored supplies stabilize. Immunity to fast transients is achieved via built-in filtering on all inputs, with maximum tolerable negative VCC glitch duration of ~200µs at 100mV overdrive - confirmed across -40°C to +85°C operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 2.7V ±2.5% (factory-trimmed); ensures reliable detection of 3.3V rail brownout before system instability. |
| Reset Timeout Period | 140ms (min); guarantees µP reset hold time sufficient for full oscillator startup and memory initialization. |
| Supply Current | 8µA (typ) at +25°C; enables multi-year battery life in always-on portable instrumentation. |
| RESET Output Type | Push/pull active-low; eliminates need for external pull-up and supports direct interface to CMOS/TTL µP reset pins. |
| Operating Temperature | -40°C to +85°C; qualified for industrial-grade embedded controllers and automotive body electronics. |
| RST IN / OVRST IN Threshold | 1.23V ±0.03V reference; allows precise external resistor-divider programming of custom undervoltage/overvoltage trip points. |
| VCC Validity Range | Guaranteed RESET assertion down to VCC = 1V; ensures deterministic reset behavior during deep brownout recovery. |
Pinout & Package
MAX6307UK27D3-T is housed in a 5-pin SOT23 package (outline U5+1, land pattern 90-0174), optimized for space-constrained PCB layouts in portable and multilayer industrial modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low push/pull reset output | Drives µP reset pin directly; sinks ≥1.2mA at VCC > 2.5V; no external pull-up required. |
| 2 - GND | System ground reference | Common return path for all internal comparators and output stage; must be low-impedance. |
| 3 - RST IN | Adjustable undervoltage reset input | Compares external divided voltage to 1.23V ref; asserts reset when input falls below threshold. |
| 4 - OVRST IN | Adjustable overvoltage reset input | Compares external divided voltage to 1.23V ref; asserts reset when input exceeds threshold. |
| 5 - VCC | Main supply and primary monitored rail | Power source and input to internal 2.7V threshold monitor; also powers all circuitry and references. |
Key Features
| Feature | Design Value |
|---|---|
| Triple independent monitoring | Simultaneously supervises main VCC (2.7V), external undervoltage rail (RST IN), and external overvoltage rail (OVRST IN). |
| No external components required | Factory-programmed VCC threshold and fixed 140ms timeout eliminate capacitors, resistors, or trim pots. |
| Transient immunity | Rejects VCC glitches <200µs at 100mV overdrive; prevents spurious resets in noisy power environments. |
| Low-power operation | 8µA typical supply current enables integration into battery-backed real-time clocks and sensor nodes. |
| Industrial temperature range | Specified from -40°C to +85°C with guaranteed performance - suitable for uncontrolled ambient deployments. |
Applications
| Portable/Battery-Powered Equipment | Multivoltage Systems: 3V/5V |
|---|---|
Use Scenario: Handheld test meter powered by single Li-ion cell with regulated 3.3V and 5V rails. IC Role / Device Role / Timing Role: Supervises both rails and triggers system reset if either drops below safe operating level during battery discharge. Use Value: Prevents firmware corruption and display artifacts by ensuring µC only runs when both supplies meet timing and voltage stability requirements. |
Use Scenario: Industrial PLC I/O module using 5V logic and 3.3V FPGA core. IC Role / Device Role / Timing Role: Monitors 5V rail (via VCC pin) and 3.3V rail (via RST IN) to guarantee synchronized power sequencing. Use Value: Eliminates need for discrete RC timers or dual-reset ICs - reduces BOM count and layout area by 30% vs. discrete solution. |
| Embedded Control Systems | Intelligent Instruments |
Use Scenario: Remote environmental sensor node with MCU, RF transceiver, and analog front-end. IC Role / Device Role / Timing Role: Provides fail-safe reset during cold-start and brownout; OVRST IN guards against transient-induced overvoltage on sensor supply. Use Value: Ensures deterministic boot state and prevents ADC saturation errors caused by out-of-spec supply excursions. |
Use Scenario: Benchtop digital multimeter with microcontroller, LCD, and precision reference. IC Role / Device Role / Timing Role: Asserts reset until 5V main rail and 3.3V reference rail stabilize, then holds reset for 140ms to allow reference settling. Use Value: Guarantees measurement accuracy by preventing µC execution before analog subsystem reaches thermal and electrical stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable reset IC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6307EUK27D3-T | Extended temperature grade (-40°C to +85°C) vs. commercial (0°C to +70°C); identical electrical specs and pinout. | Required for automotive under-hood or outdoor industrial enclosures where ambient exceeds 70°C. | Select MAX6307EUK27D3-T when operating temperature extends beyond 70°C; otherwise MAX6307UK27D3-T suffices. |
| TPS3808G33DBVR | Fixed 3.3V VCC threshold (not programmable); 200ms min timeout; 1.6µA quiescent current; SOT23-6 package. | Lacks RST IN/OVRST IN inputs - only monitors single rail; lower power but no dual/threshold flexibility. | Choose TPS3808G33DBVR for cost-sensitive single-rail 3.3V systems where ultra-low IQ is critical and extra inputs are unused. |
Compared with MAX6307EUK27D3-T, the original MAX6307UK27D3-T trades extended temperature support for lower cost in commercial environments; versus TPS3808G33DBVR, it offers triple-input supervision and programmable thresholds at higher IQ - enabling compact, flexible power monitoring in multirail designs.
Availability
MAX6307UK27D3-T is available at Aetrix Electronics and suitable for portable computers, embedded control systems, and intelligent instruments requiring stable component supply across production lifecycles.
Supply support for MAX6307UK27D3-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 in industrial, computing, and communications markets.
The MAX6305–MAX6313 family was engineered specifically for multivoltage system supervision - delivering factory-programmable thresholds, multiple input channels, and robust transient immunity in minimal SOT23 packaging.
FAQ
What is the factory-programmed VCC reset threshold for MAX6307UK27D3-T?
The MAX6307UK27D3-T has a factory-programmed VCC reset threshold of 2.7V, with tolerance of ±2.5% over the -40°C to +85°C temperature range. This value is laser-trimmed during manufacturing and corresponds to the "27" in the part number per Table 1 of the datasheet. The threshold is implemented via an internal resistor divider and requires no external components.
Does MAX6307UK27D3-T support manual reset functionality?
No, the MAX6307UK27D3-T does not include a manual reset (MR) input. Per the Selector Table and Pin Description, MR is present only on MAX6306/MAX6309/MAX6312 variants. The MAX6307UK27D3-T provides RST IN and OVRST IN for external rail monitoring but lacks dedicated MR pin - its reset assertion is fully automatic based on monitored supply conditions.
What is the meaning of "D3" in MAX6307UK27D3-T?
The "D3" suffix in MAX6307UK27D3-T specifies a factory-programmed reset timeout period of 140ms (minimum). Per the Ordering Information section, D1 = 1ms min, D2 = 20ms min, D3 = 140ms min, and D4 = 1120ms min. This timeout is internally generated and ensures RESET remains asserted long enough for microprocessor oscillator stabilization and firmware initialization.
Can MAX6307UK27D3-T monitor a 12V supply?
Yes - the MAX6307UK27D3-T can monitor a 12V supply using the OVRST IN pin. Since OVRST IN compares an external resistor-divided voltage to its internal 1.23V reference, a 12V rail can be scaled down (e.g., with R1 = 876kΩ, R2 = 100kΩ) to produce ~1.23V at the pin when the rail reaches the desired overvoltage threshold (e.g., 12.0V). The device itself operates from VCC ≤ 5.5V and does not connect directly to 12V.
Is MAX6307UK27D3-T RoHS-compliant and lead-free?
Yes, MAX6307UK27D3-T is RoHS-compliant and supplied in lead-free packaging. The "-T" suffix denotes tape-and-reel packaging with lead-free finish. Maxim's package documentation confirms SOT23-5 (U5+1) devices with "-T" meet JEDEC J-STD-020 moisture sensitivity level 1 and RoHS Directive 2011/65/EU requirements without exemption.
MAX6307UK27D3-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:
- 2.7V, Adj
- 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
MAX6307UK27D3-T FAQ
1.How can I place an order for MAX6307UK27D3-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6307UK27D3-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 MAX6307UK27D3-T reliable?
The price and inventory of MAX6307UK27D3-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6307UK27D3-T is usually 5 days.
3.What payment methods are accepted for MAX6307UK27D3-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6307UK27D3-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6307UK27D3-T?
MAX6307UK27D3-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6307UK27D3-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 MAX6307UK27D3-T?
For technical support, including MAX6307UK27D3-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6307UK27D3-T requirements.
6.How does Aetrix verify that MAX6307UK27D3-T is sourced from the original manufacturer or authorized distributors?
All MAX6307UK27D3-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 MAX6307UK27D3-T meets industry standards.
7.What is the process for return or replacement of MAX6307UK27D3-T?
All MAX6307UK27D3-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6307UK27D3-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 MAX6307UK27D3-T part is unused and in its original packaging.
Return procedure for MAX6307UK27D3-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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