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Analog Devices Inc./Maxim Integrated MAX6310UK45D3-T
- Part No.:
- MAX6310UK45D3-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6310UK45D3-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,915
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Product details
Overview
MAX6310UK45D3-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 140ms minimum reset timeout, 8µA supply current, and guaranteed RESET validity down to VCC = 1V. It is used in multivoltage embedded systems requiring reliable power-on and brownout reset.
For engineers reviewing the MAX6310UK45D3-T datasheet, MAX6310UK45D3-T pinout, MAX6310UK45D3-T application, or MAX6310UK45D3-T equivalent, key selection criteria include factory-trimmed 4.5V VCC threshold tolerance (±2.5%), dual external reset inputs with ±25nA leakage, 140ms timeout stability over temperature, immunity to fast VCC transients (<100ns), and compatibility with 3.3V/5V mixed-rail systems.
Technical Context
The MAX6310UK45D3-T implements a triple-monitor architecture: internal factory-trimmed resistor divider for precise 4.5V VCC supervision, plus two independent comparator inputs-RST IN (undervoltage) and OVRST IN (overvoltage)-each referenced to a stable 1.23V internal bandgap. All three comparators feed into a shared reset generator with a fixed 140ms minimum timeout period.
Its push/pull RESET output drives both high and low without external pull-up, sourcing ≥0.8×VCC at 500µA and sinking ≤0.3V at 1.2mA. The device operates across VCC = (VTH + 2.5%) to +5.5V - i.e., 4.61V to 5.5V - and remains functional down to VCC = 1V with guaranteed logic-level RESET assertion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 4.5V nominal, ±2.5% over -40°C to +85°C - ensures reliable 5V rail monitoring with margin against ripple and drift |
| Reset Timeout Period | 140ms minimum - meets standard microprocessor power-up initialization timing requirements |
| Supply Current | 8µA typical at +25°C - enables battery-backed operation in portable equipment |
| RESET Output Type | Active-low push/pull - eliminates need for external pull-up resistor and supports bidirectional µP reset pins |
| RST IN / OVRST IN Threshold | 1.23V reference, ±25nA input leakage - allows high-impedance resistor-divider design with <25mV error using 1MΩ resistors |
| Operating VCC Range | 4.61V to 5.5V - defined by VTH + 2.5% lower bound, ensuring valid internal biasing during 5V rail startup |
| Transient Immunity | Rejects VCC glitches <100ns wide at 4.5V threshold - prevents spurious resets in noisy digital environments |
Pinout & Package
MAX6310UK45D3-T is housed in a 5-pin SOT23 package (outline U5+1, land pattern 90-0174), measuring 2.9mm × 1.6mm × 1.1mm, RoHS-compliant and tape-and-reel packaged.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low push/pull reset output | Drives µP reset pin directly; sinks 1.2mA or sources 500µA; valid down to VCC = 1V |
| 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 | Comparator input referenced to 1.23V; asserts reset when external voltage falls below programmed threshold |
| 4 - OVRST IN | Adjustable overvoltage reset input | Comparator input referenced to 1.23V; asserts reset when external voltage exceeds programmed threshold |
| 5 - VCC | Main supply and primary monitored rail | Supplies internal circuitry and feeds factory-trimmed divider for 4.5V threshold detection |
Key Features
| Feature | Design Value |
|---|---|
| Triple-supply monitoring | Simultaneously supervises main VCC (4.5V), external undervoltage rail (RST IN), and external overvoltage rail (OVRST IN) |
| Factory-trimmed precision threshold | 4.5V VCC reset point with ±2.5% tolerance over full industrial temperature range (-40°C to +85°C) |
| No external components required | Self-contained reset generation with internal reference, timer, and push/pull driver - no capacitors or resistors needed for basic operation |
| Glitch-immune comparators | Rejects transients <100ns on VCC, RST IN, and OVRST IN - eliminates false resets from switching noise or ESD coupling |
| Low-power operation | 8µA supply current enables integration into always-on subsystems and battery-powered instrumentation |
Applications
| Industrial PLC Power Sequencing | Medical Infusion Pump Supervision |
|---|---|
Use Scenario: A programmable logic controller powers up multiple 24V, 5V, and 3.3V rails with staggered sequencing; brownout on any rail must halt execution before firmware loads. IC Role / Device Role / Timing Role: MAX6310UK45D3-T monitors 5V logic rail (VCC), 24V analog supply via RST IN divider, and 3.3V MCU core via OVRST IN divider, issuing synchronized RESET pulse after 140ms timeout. Use Value: Prevents partial initialization and state corruption by enforcing strict multi-rail power-good coordination before processor release. |
Use Scenario: Battery-powered infusion pump uses dual 3.3V supplies (motor driver and sensor ADC); overvoltage on motor rail or undervoltage on sensor rail must trigger immediate safety shutdown. IC Role / Device Role / Timing Role: MAX6310UK45D3-T configures OVRST IN to detect >3.6V on motor rail and RST IN to detect <3.0V on sensor rail, while VCC monitors main 3.3V system rail at 4.5V threshold (invalid - confirms part not used for 3.3V VCC supervision; instead, external dividers enable flexible scaling). Use Value: Enables single-chip detection of both over- and undervoltage faults across independent supplies, reducing BOM count and PCB area vs. discrete solutions. |
| Automotive Body Control Module | Network Router Power Management |
Use Scenario: 12V automotive body control module conditions 5V and 3.3V rails; load dump transients and cold-crank dips require robust reset behavior without false triggering. IC Role / Device Role / Timing Role: MAX6310UK45D3-T monitors conditioned 5V rail (VCC = 4.5V threshold), raw 12V input via RST IN divider for undervoltage lockout, and 5V rail again via OVRST IN for overvoltage detection during load dump. Use Value: Provides fail-safe dual-direction monitoring of same rail using one device, eliminating need for separate UVLO/OVLO ICs and simplifying fault logging. |
Use Scenario: Enterprise router with hot-swappable line cards requires individual power-good signaling per card; each card has independent 5V and 3.3V supplies needing coordinated reset. IC Role / Device Role / Timing Role: MAX6310UK45D3-T deployed per card monitors local 5V (VCC), 3.3V (RST IN), and backup 5V (OVRST IN), asserting RESET only when all three are stable for ≥140ms. Use Value: Guarantees deterministic, isolated power sequencing per module without cross-talk, supporting carrier-grade reliability and hot-swap compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory IC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6310EUK45D3-T | Extended temperature range (-40°C to +85°C) vs. MAX6310UK45D3-T (0°C to +70°C); identical electrical specs and pinout | Suitable for automotive under-hood or industrial outdoor deployments where ambient exceeds 70°C | Select MAX6310EUK45D3-T when operating temperature exceeds 70°C; otherwise MAX6310UK45D3-T suffices for commercial indoor use |
| TPS3808G33DBVR | Fixed 3.3V VCC threshold (not programmable), 200ms timeout, open-drain output requiring pull-up; 1.5µA quiescent current | Lacks dual external reset inputs (RST IN/OVRST IN); supports only single-rail monitoring with simpler interface | Choose TPS3808G33DBVR for cost-sensitive, single-supply 3.3V systems where external monitoring is unnecessary and ultra-low current is critical |
Compared with MAX6310EUK45D3-T, the MAX6310UK45D3-T trades extended temperature support for lower cost and qualification scope; compared with TPS3808G33DBVR, it provides triple-input flexibility and push/pull drive at higher quiescent current, making it optimal for multirail industrial control rather than single-rail portable designs.
Availability
MAX6310UK45D3-T is available at Aetrix Electronics and suitable for industrial PLCs, medical infusion pumps, automotive body control modules, and network router power management requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for MAX6310UK45D3-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 communications applications, emphasizing reliability, low power, and integration.
The MAX6305–MAX6313 family delivers highly configurable power-supply supervision for multivoltage embedded systems, with factory-programmed thresholds, dual external monitoring inputs, and robust transient immunity - targeting applications where deterministic reset behavior is safety- or mission-critical.
FAQ
What is the exact VCC reset threshold voltage for MAX6310UK45D3-T?
The MAX6310UK45D3-T has a factory-trimmed nominal VCC reset threshold of 4.5V, with a tolerance of ±2.5% over the operating temperature range of 0°C to +70°C. This means the actual threshold falls between 4.388V and 4.613V at room temperature, and remains within ±2.5% across the full specified temperature range. The "UK45" in the part number explicitly denotes the 4.5V threshold variant.
Does MAX6310UK45D3-T support monitoring of voltages other than VCC?
Yes, MAX6310UK45D3-T supports two additional monitoring channels: RST IN (undervoltage) and OVRST IN (overvoltage). Each accepts an external resistor divider to set custom thresholds relative to the internal 1.23V reference. For example, a 3.3V rail can be monitored for undervoltage by configuring RST IN, while a 12V rail can be checked for overvoltage via OVRST IN - all concurrently with the 4.5V VCC supervision.
What is the reset timeout period for MAX6310UK45D3-T, and is it adjustable?
The MAX6310UK45D3-T has a factory-programmed reset timeout period of 140ms minimum, indicated by the "D3" suffix. This value is fixed and not user-adjustable; it is guaranteed over temperature and supply voltage. The timeout begins only after all monitored inputs (VCC, RST IN, OVRST IN) exceed their respective thresholds and continues for ≥140ms before deasserting RESET.
Is MAX6310UK45D3-T compatible with 3.3V microcontrollers despite its 4.5V VCC threshold?
Yes, MAX6310UK45D3-T is fully compatible with 3.3V microcontrollers. Its VCC pin must be connected to a 5V supply (since 4.5V threshold requires VCC ≥ 4.61V), but its RESET output is push/pull and logic-compatible with 3.3V I/O - sinking to ≤0.3V and sourcing to ≥0.8×VCC (≥4V), which safely interfaces with 3.3V µP reset pins. External level-shifting is not required.
How does MAX6310UK45D3-T handle fast voltage transients on monitored supplies?
MAX6310UK45D3-T is specifically designed to ignore fast transients: it rejects negative-going VCC glitches <100ns wide when overdriven by ≥10mV below the 4.5V threshold, and similarly suppresses transients on RST IN and OVRST IN inputs. This immunity is achieved through internal filtering and comparator hysteresis, preventing spurious resets during switching noise, ESD events, or load-dump surges in industrial environments.
MAX6310UK45D3-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:
- 140ms Minimum
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6310UK45D3-T FAQ
1.How can I place an order for MAX6310UK45D3-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6310UK45D3-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 MAX6310UK45D3-T reliable?
The price and inventory of MAX6310UK45D3-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6310UK45D3-T is usually 5 days.
3.What payment methods are accepted for MAX6310UK45D3-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6310UK45D3-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6310UK45D3-T?
MAX6310UK45D3-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6310UK45D3-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 MAX6310UK45D3-T?
For technical support, including MAX6310UK45D3-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6310UK45D3-T requirements.
6.How does Aetrix verify that MAX6310UK45D3-T is sourced from the original manufacturer or authorized distributors?
All MAX6310UK45D3-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 MAX6310UK45D3-T meets industry standards.
7.What is the process for return or replacement of MAX6310UK45D3-T?
All MAX6310UK45D3-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6310UK45D3-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 MAX6310UK45D3-T part is unused and in its original packaging.
Return procedure for MAX6310UK45D3-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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