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Analog Devices Inc./Maxim Integrated MAX6310UK30D3-T
- Part No.:
- MAX6310UK30D3-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6310UK30D3-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,739
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Product details
Overview
MAX6310UK30D3-T from Maxim Integrated is a 5-pin SOT23 programmable supervisory IC that monitors VCC (factory-set 3.0V 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. Used in multivoltage embedded systems for reliable power-on and brownout reset generation.
For engineers reviewing the MAX6310UK30D3-T datasheet, MAX6310UK30D3-T pinout, MAX6310UK30D3-T application, or MAX6310UK30D3-T equivalent, key selection criteria include its dual-input monitoring capability (VCC + RST IN + OVRST IN), factory-trimmed 3.0V ±2.5% threshold, 140ms timeout, SOT23-5 package compatibility, and immunity to fast VCC transients up to 100V/µs.
Technical Context
The MAX6310UK30D3-T implements a triple-monitoring architecture: internal factory-trimmed resistor divider sets the primary VCC reset threshold at 3.0V; external resistor dividers program RST IN (undervoltage) and OVRST IN (overvoltage) thresholds referenced to a 1.23V internal bandgap. All three comparators feed into a shared reset generator with a fixed 140ms timeout period (D3 variant).
Its push/pull RESET output drives low actively (VOL ≤ 0.3V at ISINK = 500µA) and high actively (VOH ≥ 0.8×VCC), eliminating external pull-up requirements. The device operates across VCC = (VTH + 2.5%) to +5.5V - i.e., 3.075V to 5.5V - and guarantees functional reset assertion down to VCC = 1.0V, with immunity to sub-1µs transients per typical operating characteristics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 3.0V nominal, ±2.5% over -40°C to +85°C - ensures reliable detection of 3.3V rail brownout before system instability |
| Reset Timeout Period | 140ms minimum - meets standard microprocessor power-up timing requirements without external RC components |
| Supply Current | 8µA typical at +25°C - enables battery-backed operation in portable equipment with multi-year shelf life |
| Operating VCC Range | 3.075V to 5.5V - supports direct connection to monitored 3.3V or 5V rails without auxiliary biasing |
| RESET Output Type | Push/pull active-low - provides full logic-level drive strength in both states, eliminating need for external pull-up resistor |
| Input Leakage Current | ±25nA max on RST IN/OVRST IN - allows use of high-value (MΩ-range) resistor dividers with <25mV error at 1MΩ |
| Transient Immunity | Immune to VCC transients ≤ 100ns at 3.0V overdrive - prevents false resets during digital switching noise |
Pinout & Package
MAX6310UK30D3-T is housed in a 5-pin SOT23-5 surface-mount package (outline U5+1, land pattern 90-0174), measuring 2.9mm × 1.6mm × 1.1mm, RoHS-compliant, tape-and-reel packaged.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low push/pull reset output | Drives low (≤0.3V) or high (≥0.8×VCC) directly to µP reset pin; no external pull-up required |
| 2 - GND | System ground reference | Return path for all internal comparators and output stage; must be low-impedance for noise immunity |
| 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 | Powers device and feeds internal trimmed divider for 3.0V threshold detection; minimum operating voltage 3.075V |
Key Features
| Feature | Design Value |
|---|---|
| Triple independent monitoring inputs | VCC (3.0V factory-set), RST IN (user-programmable undervoltage), OVRST IN (user-programmable overvoltage) - enables comprehensive rail supervision in mixed-voltage systems |
| Factory-trimmed precision threshold | 3.0V ±2.5% over full temperature range - eliminates calibration effort and improves system-level reset margin predictability |
| No external timing components | 140ms factory-programmed timeout - removes RC tolerance dependency and PCB space for timing network |
| Guaranteed RESET validity to VCC = 1V | Output remains logic-valid even as supply collapses - ensures clean reset deassertion during power-down sequences |
| Immunity to fast VCC transients | Rejects sub-100ns glitches on monitored rail - prevents spurious resets in noisy digital environments without added filtering |
Applications
| Industrial PLC I/O Modules | Medical Portable Monitors |
|---|---|
Use Scenario: Supervises 3.3V microcontroller core rail and 5V analog sensor interface rail in battery-powered patient monitors subject to rapid battery discharge and EMI. IC Role / Device Role / Timing Role: Triple-input supervisor asserting RESET when either 3.3V rail drops below 3.0V, sensor rail exceeds 5.25V, or auxiliary 3.3V-derived rail falls below programmed threshold. Use Value: Prevents firmware corruption during battery sag by guaranteeing 140ms reset hold time while enabling simultaneous overvoltage protection on analog supplies. |
Use Scenario: Ensures deterministic startup and fault recovery in handheld ECG units powered by single-cell Li-ion batteries (2.8–4.2V range). IC Role / Device Role / Timing Role: Monitors main 3.3V domain (VCC), backup real-time clock rail (RST IN), and high-voltage LED backlight supply (OVRST IN) with independent thresholds. Use Value: Eliminates need for discrete comparators and timers, reducing BOM count by 4 components while maintaining ±2.5% threshold accuracy over temperature. |
| Automotive Body Control Modules | Network Edge Routers |
Use Scenario: Provides fail-safe reset for 3.3V MCU and CAN transceiver in under-hood modules exposed to load-dump transients and cold-crank voltage dips. IC Role / Device Role / Timing Role: Uses OVRST IN to detect >16V load dump on 12V system rail, VCC to monitor 3.3V regulator output, and RST IN to supervise isolated 5V CAN bus supply. Use Value: Delivers coordinated reset across three critical domains with single-chip timing control, avoiding race conditions between independent supervisors. |
Use Scenario: Secures reliable boot sequencing in fanless enterprise routers where 3.3V CPU core, 1.2V DDR memory, and 5V PHY rails require synchronized reset release. IC Role / Device Role / Timing Role: Configures RST IN to monitor DDR termination voltage (VTT), VCC for CPU core, and OVRST IN for 5V PHY overvoltage - all feeding one RESET signal. Use Value: Reduces system-level reset coordination complexity by consolidating three rail monitors into one deterministic 140ms timeout window. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6310UK30D2-T | Identical functionality but 20ms minimum reset timeout instead of 140ms | Suitable for fast-boot microcontrollers requiring shorter reset hold time | Select only if system timing budget requires <140ms reset assertion; not drop-in for 140ms-critical designs |
| TPS3808G30DBVR | Single-input (VDD only), 3.0V threshold, 200ms timeout, open-drain output, higher 12µA ICC | Lacks RST IN/OVRST IN inputs; requires external pull-up; no overvoltage monitoring capability | Use when only VDD supervision is needed and board space permits pull-up resistor; not suitable for triple-rail monitoring |
Compared with MAX6310UK30D2-T and TPS3808G30DBVR, the MAX6310UK30D3-T uniquely delivers triple-input supervision (VCC + RST IN + OVRST IN) with factory-programmed 140ms timeout and push/pull output in SOT23-5 - enabling compact, robust reset management for multirail embedded systems without external components.
Availability
MAX6310UK30D3-T is available at Aetrix Electronics and suitable for industrial PLCs, portable medical devices, automotive body controllers, and network edge routers requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.
Supply support for MAX6310UK30D3-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, communications, and computing markets.
The MAX6305–MAX6313 family was designed specifically for multivoltage microprocessor supervision in space-constrained, battery-sensitive, and noise-prone embedded systems - delivering precision reset generation with minimal external components.
FAQ
What is the exact factory-programmed reset threshold voltage for MAX6310UK30D3-T?
The MAX6310UK30D3-T has a factory-trimmed VCC reset threshold of 3.0V nominal, with guaranteed tolerance of ±2.5% over the full operating temperature range (-40°C to +85°C). This value is laser-trimmed during production and corresponds to the "30" in the part number per Table 1 of the datasheet. The actual measured threshold at +25°C typically falls within 2.925V to 3.075V.
Does MAX6310UK30D3-T support monitoring of voltages other than VCC?
Yes, the MAX6310UK30D3-T supports two additional monitoring inputs beyond VCC: RST IN (pin 3) for user-programmable undervoltage detection and OVRST IN (pin 4) for user-programmable overvoltage detection. Both compare external voltages - set via resistor dividers - against a precise 1.23V internal reference, enabling flexible supervision of auxiliary rails like 5V, 12V, or isolated supplies.
What is the meaning of "D3" in MAX6310UK30D3-T?
The "D3" suffix in MAX6310UK30D3-T specifies the factory-programmed reset timeout period: D3 = 140ms minimum. This is one of four standard timeout options (D1 = 1ms, D2 = 20ms, D3 = 140ms, D4 = 1120ms). The timeout begins after all monitored inputs return within their thresholds and holds RESET low for the full duration, ensuring reliable microprocessor initialization.
Can MAX6310UK30D3-T operate with a VCC supply below 3.0V?
Yes, the MAX6310UK30D3-T can operate with VCC as low as 3.075V (i.e., VTH + 2.5%), which is the minimum required to maintain accurate 3.0V threshold detection. Below this, the internal voltage divider may not function correctly. However, the RESET output remains valid down to VCC = 1.0V - meaning it continues to drive correct logic levels even during deep brownout, though the VCC monitoring function ceases.
Is MAX6310UK30D3-T pin-compatible with other devices in the MAX6305–MAX6313 family?
Yes, all MAX6305–MAX6313 devices share the same SOT23-5 pinout and footprint, including MAX6310UK30D3-T. Pin 1 is RESET, pin 2 is GND, pin 3 is RST IN, pin 4 is OVRST IN, and pin 5 is VCC. This allows direct substitution within the family for different threshold or timeout variants, provided the functional requirements (e.g., presence of OVRST IN) match the target application.
MAX6310UK30D3-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:
- 3V, 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
MAX6310UK30D3-T FAQ
1.How can I place an order for MAX6310UK30D3-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6310UK30D3-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 MAX6310UK30D3-T reliable?
The price and inventory of MAX6310UK30D3-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6310UK30D3-T is usually 5 days.
3.What payment methods are accepted for MAX6310UK30D3-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6310UK30D3-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6310UK30D3-T?
MAX6310UK30D3-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6310UK30D3-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 MAX6310UK30D3-T?
For technical support, including MAX6310UK30D3-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6310UK30D3-T requirements.
6.How does Aetrix verify that MAX6310UK30D3-T is sourced from the original manufacturer or authorized distributors?
All MAX6310UK30D3-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 MAX6310UK30D3-T meets industry standards.
7.What is the process for return or replacement of MAX6310UK30D3-T?
All MAX6310UK30D3-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6310UK30D3-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 MAX6310UK30D3-T part is unused and in its original packaging.
Return procedure for MAX6310UK30D3-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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