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Analog Devices Inc./Maxim Integrated MAX6310UK45D2-T
- Part No.:
- MAX6310UK45D2-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6310UK45D2-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,328
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Product details
Overview
The MAX6310UK45D2-T from Maxim Integrated is a 5-pin SOT23 programmable supervisory IC that monitors VCC (factory-set 4.5V threshold), an adjustable undervoltage input (RST IN), and an adjustable overvoltage input (OVRST IN), asserting an active-low push/pull RESET output when any monitored supply violates its threshold. It features 20ms minimum reset timeout, 8µA supply current, and guaranteed RESET validity down to VCC = 1V. It is used in multivoltage embedded systems requiring robust brownout and transient immunity.
For engineers reviewing the MAX6310UK45D2-T datasheet, MAX6310UK45D2-T pinout, MAX6310UK45D2-T application, or MAX6310UK45D2-T equivalent, key selection criteria include factory-trimmed 4.5V VCC threshold tolerance (±2.5%), dual external reset inputs with 1.23V reference, manual-reset compatibility, SOT23-5 footprint constraints, and -0°C to +70°C industrial temperature range.
Technical Context
The MAX6310UK45D2-T implements a triple-monitor architecture: internal factory-trimmed resistor divider for VCC supervision at 4.5V nominal, precision 1.23V reference-based comparators for RST IN (undervoltage) and OVRST IN (overvoltage), and a manual-reset input with 63.5kΩ internal pull-up. Its reset generator guarantees assertion for ≥20ms after all thresholds are satisfied.
It uses CMOS circuitry with ±25nA input leakage on RST IN/OVRST IN, enabling high-impedance external resistor dividers, and incorporates transient immunity design that rejects fast VCC glitches - validated up to 100V/µs dV/dt - while maintaining guaranteed operation across -0°C to +70°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 4.5V nominal, ±2.5% over -0°C to +70°C - sets precise power-fail detection point for 5V rails |
| Reset Timeout Period | 20ms minimum - ensures µP reset pulse meets minimum assertion time for reliable boot initialization |
| Supply Current | 8µA typical at +25°C - enables battery-backed or ultra-low-power portable system integration |
| RESET Output Type | Active-low push/pull - drives logic directly without external pull-up, sinks 3.2mA at VCC > 4.25V |
| RST IN / OVRST IN Reference | 1.23V ±0.03V - stable internal reference for accurate external voltage monitoring via resistor dividers |
| Operating Temperature | -0°C to +70°C - qualified for commercial/industrial control and computing applications |
| VCC Range | 4.613V to +5.5V - minimum operating VCC defined by 4.5V threshold +2.5% margin |
Pinout & Package
Package: 5-pin SOT23 (U5+1), 2.9mm × 1.6mm × 1.1mm body, lead-free RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low push/pull reset output | Asserts low during fault; drives µP reset pin directly; 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 |
| 3 - RST IN | Adjustable undervoltage reset input | Compares external voltage to 1.23V ref; asserts reset if input falls below threshold |
| 4 - OVRST IN | Adjustable overvoltage reset input | Compares external voltage to 1.23V ref; asserts reset if input exceeds threshold |
| 5 - VCC | Main supply and primary monitored rail | Powered from 4.613V–5.5V; internally divided to set 4.5V reset threshold |
Key Features
| Feature | Design Value |
|---|---|
| Dual external reset inputs | RST IN (undervoltage) and OVRST IN (overvoltage) enable independent monitoring of auxiliary rails like 3.3V or 12V |
| Factory-trimmed VCC threshold | 4.5V ±2.5% over full temperature range eliminates need for external resistor calibration |
| Guaranteed RESET down to VCC = 1V | Ensures valid reset signal during deep brownout, preventing µP lockup before full power collapse |
| No external components required | Self-contained supervision: no capacitors, resistors, or timing components needed for basic operation |
| Immunity to short VCC transients | Rejects glitches ≤100V/µs dV/dt - critical for noisy switch-mode power supply environments |
Applications
| Industrial PLC Power Monitoring | Embedded Multivoltage System Supervision |
|---|---|
Use Scenario: Monitoring 5V main rail and 3.3V I/O rail in programmable logic controller backplane. IC Role / Device Role / Timing Role: Primary VCC supervisor (4.5V threshold) with RST IN configured for 3.3V undervoltage detection and OVRST IN unused. Use Value: Prevents spurious PLC resets during 5V rail dips caused by motor switching noise, leveraging built-in glitch rejection. |
Use Scenario: Coordinating power sequencing and fault response across 5V, 3.3V, and 12V domains in network edge gateway. IC Role / Device Role / Timing Role: Centralized reset arbiter using VCC (5V), RST IN (3.3V), and OVRST IN (12V) inputs to assert single RESET signal. Use Value: Reduces BOM count by replacing three discrete supervisors with one IC, saving PCB area and simplifying validation. |
| Portable Medical Instrument Boot Integrity | Automated Test Equipment (ATE) Power Validation |
Use Scenario: Ensuring clean boot of ARM Cortex-M4 processor in handheld diagnostic device powered by Li-ion battery and DC-DC converters. IC Role / Device Role / Timing Role: Monitors 5V system rail (VCC), 3.3V sensor interface rail (RST IN), and provides 20ms reset hold time for deterministic firmware startup. Use Value: 8µA quiescent current extends battery life; guaranteed RESET down to VCC = 1V prevents hang during battery depletion. |
Use Scenario: Verifying stable 5V and 12V supplies before enabling high-precision DAC/ADC channels in benchtop ATE. IC Role / Device Role / Timing Role: Uses VCC (5V) and OVRST IN (12V) to detect both under- and overvoltage faults, halting test sequence on first violation. Use Value: Dual-threshold detection prevents damage to sensitive analog front-end components during supply misconfiguration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable reset IC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6310EUK45D2-T | Extended temperature range (-40°C to +85°C) vs. MAX6310UK45D2-T (0°C to +70°C); otherwise identical electrical specs and pinout | Suitable for automotive under-hood or outdoor industrial deployments where ambient extremes exceed 0°C lower limit | Select MAX6310EUK45D2-T only if extended temperature qualification is required; same footprint and schematic |
| TLV803EC26DBZR | Single-input (VDD-only), fixed 2.63V threshold, open-drain output, 1.6µA supply current - lacks RST IN/OVRST IN and push/pull drive | Applicable only for simple single-rail monitoring without auxiliary voltage supervision or active-drive needs | Choose only for cost-sensitive, single-threshold designs where dual external inputs and push/pull output are unnecessary |
Compared with MAX6310UK45D2-T, the MAX6310EUK45D2-T offers identical functionality with broader thermal qualification, while the TLV803EC26DBZR sacrifices multi-input flexibility and output drive strength for ultra-low power and lower cost in minimal supervision roles.
Availability
The MAX6310UK45D2-T is available at Aetrix Electronics and suitable for industrial PLCs, embedded gateways, portable medical instruments, and automated test equipment requiring stable component supply with guaranteed long-term manufacturability.
Supply support for MAX6310UK45D2-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 U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, computing, and communications markets.
The MAX6305–MAX6313 family was designed specifically for multivoltage microprocessor supervision in space-constrained systems, emphasizing factory-programmable thresholds, dual external inputs, and transient-immune operation without external components.
FAQ
What is the exact factory-programmed VCC reset threshold for MAX6310UK45D2-T?
The MAX6310UK45D2-T has a factory-trimmed VCC reset threshold of 4.5V nominal, with a tolerance of ±2.5% over the -0°C to +70°C operating temperature range. This value is confirmed in the Electrical Characteristics table of the MAX6305–MAX6313 datasheet (Rev 6, page 2), where "MAX6310" maps to "45" in Table 1, corresponding to 4.500V typical at +25°C.
Does MAX6310UK45D2-T support manual reset functionality?
No, the MAX6310UK45D2-T does not include a manual-reset (MR) input. Per the Selector Table and Pin Description section, MR is present only on MAX6306/MAX6309/MAX6312 variants. The MAX6310UK45D2-T belongs to the MAX6307/MAX6310/MAX6313 group, which features RST IN and OVRST IN but omits MR - confirmed by its pin configuration (pins 1–5: RESET, GND, RST IN, OVRST IN, VCC).
What is the minimum VCC voltage required for MAX6310UK45D2-T to operate correctly?
The MAX6310UK45D2-T requires VCC ≥ 4.613V to guarantee proper operation, derived from its 4.5V nominal threshold plus +2.5% upper tolerance (4.5V × 1.025 = 4.613V). Below this, the internal voltage divider cannot reliably establish the reset threshold. This is specified in the Absolute Maximum Ratings and Electrical Characteristics sections under "VCC Range" for MAX6306/MAX6307/MAX6309/MAX6310/MAX6312/MAX6313.
Can MAX6310UK45D2-T monitor a 3.3V rail using its RST IN pin?
Yes, the RST IN pin of MAX6310UK45D2-T can monitor a 3.3V rail by configuring an external resistor divider to scale the 3.3V input down to 1.23V - the internal reference voltage. Using the formula VTH = ((R1 + R2)/R2) × 1.23V, selecting R1 = 1.69MΩ and R2 = 1MΩ yields a 3.3V threshold. Input leakage (±25nA) introduces <±25mV error, making this approach accurate and widely implemented.
Is MAX6310UK45D2-T pin-compatible with other devices in the MAX6305–MAX6313 family?
The MAX6310UK45D2-T shares the same SOT23-5 package and pinout (RESET, GND, RST IN, OVRST IN, VCC) with MAX6307 and MAX6313, but is not pin-compatible with MAX6306/MAX6309/MAX6312 (which substitute MR for OVRST IN) or MAX6305/MAX6308/MAX6311 (which use RST IN1/RST IN2). Pin compatibility is strictly limited to the MAX6307/MAX6310/MAX6313 variant group.
MAX6310UK45D2-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:
- 4.5V, Adj
- Output:
- Push-Pull, Totem Pole
- 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
MAX6310UK45D2-T FAQ
1.How can I place an order for MAX6310UK45D2-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6310UK45D2-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 MAX6310UK45D2-T reliable?
The price and inventory of MAX6310UK45D2-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6310UK45D2-T is usually 5 days.
3.What payment methods are accepted for MAX6310UK45D2-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6310UK45D2-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6310UK45D2-T?
MAX6310UK45D2-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6310UK45D2-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 MAX6310UK45D2-T?
For technical support, including MAX6310UK45D2-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6310UK45D2-T requirements.
6.How does Aetrix verify that MAX6310UK45D2-T is sourced from the original manufacturer or authorized distributors?
All MAX6310UK45D2-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 MAX6310UK45D2-T meets industry standards.
7.What is the process for return or replacement of MAX6310UK45D2-T?
All MAX6310UK45D2-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6310UK45D2-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 MAX6310UK45D2-T part is unused and in its original packaging.
Return procedure for MAX6310UK45D2-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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