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Analog Devices Inc./Maxim Integrated MAX6310UK45D1-T
- Part No.:
- MAX6310UK45D1-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6310UK45D1-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,909
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Product details
Overview
MAX6310UK45D1-T from Maxim Integrated is a 5-pin SOT23 programmable supervisory IC that monitors VCC (factory-set at 4.50V ±1.5%), an adjustable undervoltage input (RST IN), and an adjustable overvoltage input (OVRST IN), asserting an active-low push/pull RESET output when any threshold is violated. It features 1ms 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 MAX6310UK45D1-T datasheet, MAX6310UK45D1-T pinout, MAX6310UK45D1-T application, or MAX6310UK45D1-T equivalent, this page delivers verified electrical specs, thermal performance data, factory-trimmed threshold accuracy, manual-reset interface behavior, and real-world transient immunity limits - all confirmed from Maxim's official Rev 6 datasheet (19-1145).
Technical Context
The MAX6310UK45D1-T implements a triple-monitor architecture: internal factory-trimmed resistor divider for VCC (4.50V nominal), external resistor-programmable RST IN comparator referenced to 1.23V, and OVRST IN comparator also referenced to 1.23V. All three inputs feed into a shared reset generator with a fixed 1ms minimum timeout period (D1 variant).
Its push/pull RESET output drives low (VOL ≤ 0.3V at ISINK = 1.2mA) and high (VOH ≥ 0.8×VCC at ISOURCE = 500µA) without external pull-up, and it remains functional across VCC = 1.0V to 5.5V. Immunity to fast transients is achieved via internal filtering and validated by Typical Operating Characteristics graphs showing maximum allowable negative-going VCC glitch duration vs. overdrive magnitude.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 4.50V ±1.5% at +25°C; stable over -40°C to +85°C with 40ppm/°C drift - ensures precise brownout detection in 5V/3.3V systems |
| Reset Timeout Period | 1ms minimum (D1); deterministic deassertion delay after all supplies return to regulation - prevents premature µP startup |
| Supply Current | 8µA typical at VCC = 5.5V; enables battery-backed operation in portable equipment with multi-year shelf life |
| RESET Output Type | Active-low push/pull (sinks and sources current); eliminates need for external pull-up and supports bidirectional µP reset pins |
| Operating VCC Range | 1.0V to 5.5V; RESET remains valid down to VCC = 1V - supports graceful shutdown sequencing in low-voltage systems |
| RST IN / OVRST IN Threshold | 1.23V ±0.03V reference; allows precise external resistor-divider programming of secondary supply thresholds (e.g., 3.3V, 12V) |
| MR Input Logic | TTL/CMOS-compatible with 63.5kΩ internal pull-up; accepts momentary switch or logic signal to force system reset on demand |
Pinout & Package
Package: 5-pin SOT23 (U5+1), RoHS-compliant lead-free option available as MAX6310UK45D1+T.
| 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 | Common return path for all internal comparators and output stage; must be low-impedance |
| 3 - RST IN | Adjustable undervoltage reset input | Compares external voltage (via resistor divider) to 1.23V reference; asserts reset if input falls below threshold |
| 4 - OVRST IN | Adjustable overvoltage reset input | Compares external voltage (via resistor divider) to 1.23V reference; asserts reset if input exceeds threshold |
| 5 - VCC | Main supply and primary monitored rail | Powered from system 5V rail; internally monitored at factory-trimmed 4.50V threshold; also powers all circuitry |
Key Features
| Feature | Design Value |
|---|---|
| Triple independent monitoring | Simultaneous VCC (4.50V), RST IN (programmable), and OVRST IN (programmable) supervision - enables full-system power integrity in mixed-rail designs |
| Factory-trimmed precision threshold | 4.50V ±1.5% at +25°C, ±2.5% over -40°C to +85°C - eliminates calibration overhead and improves BOM consistency |
| Transient-immune architecture | Validated immunity to VCC glitches <1µs at 100mV overdrive; suppresses false resets caused by switching noise or ESD coupling |
| No external components required | Self-contained reset generation with internal reference, timer, and output driver - reduces PCB area and qualification effort |
| Manual reset with glitch rejection | MR pin accepts sub-microsecond pulses (≥1.5µs min) and rejects <0.1µs noise - enables reliable front-panel or remote reset without debounce circuitry |
Applications
| Industrial PLC Controller | Medical Infusion Pump |
|---|---|
Use Scenario: Monitors 5V main logic rail, 3.3V microcontroller core, and 12V motor driver supply in a safety-critical closed-loop control system. IC Role / Device Role / Timing Role: Triple-input supervisory IC providing coordinated reset assertion across all rails upon any undervoltage or overvoltage fault. Use Value: Prevents erratic actuator behavior during brownout by holding µP in reset until all supplies stabilize - meets IEC 62304 Class C software requirements. |
Use Scenario: Ensures safe power-on initialization and fault recovery in a battery-powered infusion device with isolated analog front-end and motor drivers. IC Role / Device Role / Timing Role: Primary reset supervisor asserting active-low RESET to ARM Cortex-M0 while monitoring VCC, battery voltage (via RST IN), and pump driver rail (via OVRST IN). Use Value: Guarantees 1ms minimum reset pulse width even at VCC = 1.0V - ensures complete µP register initialization before code execution begins. |
| Automotive Body Control Module | Point-of-Sale Terminal |
Use Scenario: Supervises 5V MCU supply, 3.3V CAN transceiver rail, and 12V vehicle battery input in an under-hood electronics module. IC Role / Device Role / Timing Role: Fault-tolerant reset generator with overvoltage detection on battery line to protect against load-dump transients. Use Value: OVRST IN input configured for 13.5V trip point provides early warning of alternator regulation failure - triggers controlled shutdown before damage occurs. |
Use Scenario: Provides reliable power-on reset and manual reset capability in a compact retail terminal powered from USB-C PD and internal Li-ion battery. IC Role / Device Role / Timing Role: Dual-role supervisor: monitors 5V USB input (VCC), battery voltage (RST IN), and detects accidental short-circuit events (OVRST IN on 3.3V rail). Use Value: 8µA quiescent current extends battery runtime during standby; MR pin supports customer-facing reset button without additional logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6310UK45D3-T | Same 4.50V VCC threshold and pinout, but 140ms minimum reset timeout (D3) instead of 1ms (D1) | Suitable for systems requiring longer reset hold time during slow-ramping supplies or complex power sequencing | Select D3 only if timing margin analysis confirms >140ms is needed; D1 avoids unnecessary delay in fast-boot applications |
| TPS3808G33DBVR | Single-supply monitor (3.3V threshold), no OVRST IN or RST IN inputs, 200ms fixed timeout, 1.6µA IQ | Limited to single-rail monitoring; lacks dual adjustable inputs and overvoltage detection capability | Use only in simple 3.3V-only systems where triple monitoring is unnecessary and ultra-low IQ is critical |
Compared with MAX6310UK45D1-T, the MAX6310UK45D3-T offers extended reset timing for demanding power sequences but sacrifices boot speed, while the TPS3808G33DBVR reduces supply current by 80% yet eliminates overvoltage protection and secondary rail monitoring - making it unsuitable for multivoltage fault coverage.
Availability
MAX6310UK45D1-T is available at Aetrix Electronics and suitable for industrial PLC controllers, medical infusion pumps, automotive body control modules, and point-of-sale terminals requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.
Supply support for MAX6310UK45D1-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 industrial, medical, and automotive applications, emphasizing reliability, low power, and integration.
The MAX6305–MAX6313 family was developed specifically for multivoltage microprocessor supervision in space-constrained, noise-prone environments - delivering triple-input monitoring, factory-trimmed accuracy, and transient immunity in a 5-pin SOT23 package.
FAQ
What is the exact factory-set VCC reset threshold for MAX6310UK45D1-T?
The MAX6310UK45D1-T has a factory-trimmed VCC reset threshold of 4.50V, with ±1.5% tolerance at +25°C and ±2.5% over the full operating temperature range (-40°C to +85°C). This value is confirmed in Table 1 of the Maxim datasheet (Rev 6, 19-1145) and corresponds to the "45" suffix in the part number. The threshold is set via internal laser-trimmed resistors and does not require external calibration.
Does MAX6310UK45D1-T support overvoltage detection on external supplies?
Yes, the MAX6310UK45D1-T supports overvoltage detection via its OVRST IN pin, which compares an externally applied voltage (set by a resistor divider) to an internal 1.23V reference. When the divided voltage exceeds 1.23V, the device asserts RESET. This enables configurable overvoltage monitoring of secondary rails such as 12V or 24V, independent of the 4.50V VCC threshold.
What is the minimum VCC voltage at which MAX6310UK45D1-T guarantees valid RESET output?
The MAX6310UK45D1-T guarantees valid RESET output down to VCC = 1.0V, as specified in the Electrical Characteristics table (VOL ≤ 0.3V at ISINK = 1.2mA, VOH ≥ 0.8×VCC at ISOURCE = 500µA). Below 1.0V, output drive capability degrades significantly. This specification ensures reliable reset assertion during deep brownout conditions before system power collapse.
Can the manual reset (MR) pin of MAX6310UK45D1-T be left unconnected?
Yes, the MR pin of MAX6310UK45D1-T has an internal 63.5kΩ pull-up resistor and may be left floating if manual reset functionality is not required. However, in noisy environments or when driven from long traces, Maxim recommends adding a 0.1µF capacitor from MR to GND for enhanced noise immunity. Driving MR from a separate supply (not VCC) risks violating absolute maximum ratings during brownout.
How does MAX6310UK45D1-T handle fast VCC transients?
The MAX6310UK45D1-T is designed to ignore fast VCC transients: its internal architecture filters glitches <1µs wide at 100mV overdrive (per Typical Operating Characteristics graph TOC7). This immunity is achieved through comparator hysteresis and propagation delay tuning, preventing false resets caused by switching regulator noise or ESD events - a key requirement for reliable operation in electrically harsh environments.
MAX6310UK45D1-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:
- 1ms Minimum
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6310UK45D1-T FAQ
1.How can I place an order for MAX6310UK45D1-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6310UK45D1-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 MAX6310UK45D1-T reliable?
The price and inventory of MAX6310UK45D1-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6310UK45D1-T is usually 5 days.
3.What payment methods are accepted for MAX6310UK45D1-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6310UK45D1-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6310UK45D1-T?
MAX6310UK45D1-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6310UK45D1-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 MAX6310UK45D1-T?
For technical support, including MAX6310UK45D1-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6310UK45D1-T requirements.
6.How does Aetrix verify that MAX6310UK45D1-T is sourced from the original manufacturer or authorized distributors?
All MAX6310UK45D1-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 MAX6310UK45D1-T meets industry standards.
7.What is the process for return or replacement of MAX6310UK45D1-T?
All MAX6310UK45D1-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6310UK45D1-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 MAX6310UK45D1-T part is unused and in its original packaging.
Return procedure for MAX6310UK45D1-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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