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Analog Devices Inc./Maxim Integrated MAX6315US26D1+T
- Part No.:
- MAX6315US26D1+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6315US26D1+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:10,657
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Product details
Overview
MAX6315US26D1+T from Analog Devices is a low-power CMOS microprocessor supervisory circuit that monitors VCC supply voltage and asserts an open-drain active-low RESET signal when voltage falls below 2.63V or upon manual reset assertion; it features a factory-trimmed 2.63V threshold, 1ms minimum reset timeout, 5μA supply current, and operates across –40°C to +125°C for reliable power-up/brownout detection in embedded μP systems.
For engineers reviewing the MAX6315US26D1+T datasheet, MAX6315US26D1+T pinout, MAX6315US26D1+T application, or MAX6315US26D1+T equivalent, this page delivers verified electrical parameters, SOT23-4 package mapping, reset timing behavior under temperature variation, MR input logic thresholds, and design-critical open-drain RESET output voltage compliance up to 6V - all confirmed from Analog Devices' official datasheet Rev 7 (2/25/2025).
Technical Context
The MAX6315US26D1+T implements a precision voltage-monitoring comparator with laser-trimmed internal resistive divider to set its 2.63V nominal reset threshold, with ±3.5% tolerance over –40°C to +125°C and 60ppm/°C tempco. Its internal monostable timer generates a guaranteed-minimum 1ms reset timeout after VCC recovery or MR deassertion.
It uses an open-drain n-channel MOSFET for RESET output, enabling level-shifting: RESET can be pulled up to any voltage ≤6V, independent of VCC, supporting mixed-supply reset coordination. MR includes a 63kΩ internal pullup and rejects <100ns glitches, eliminating external debounce components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VTH Nominal | 2.63V - Factory-trimmed threshold ensures accurate brownout detection at system's 2.6V rail without external calibration. |
| tRP Min | 1ms - Guarantees sufficient reset hold time for μP initialization even during fast VCC recovery transients. |
| ICC | 5μA max at +125°C - Enables use in battery-powered equipment with multi-year standby life. |
| Operating Temp | –40°C to +125°C - Qualified for under-hood automotive, industrial control, and high-reliability embedded applications. |
| RESET Output | Open-drain, 0.4V max @ 3.2mA - Supports direct interface to 1.8V–5V logic families via external pullup; tolerates 6V pullup voltage. |
| MR Input | Logic-low trigger; internal 63kΩ pullup - Allows momentary switch-to-GND connection with no external components required. |
Pinout & Package
MAX6315US26D1+T is housed in a RoHS-compliant 4-pin SOT23 package (outline 21-0052), with 1.3mm × 2.9mm footprint and 0.95mm height - compatible with standard SOT23 pick-and-place and reflow processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground reference | Return path for internal circuitry and MR/RESET bias; must be connected directly to system ground plane. |
| 2 (RESET) | Active-low open-drain output | Drives low during reset; requires external pullup (e.g., 10kΩ) to target logic supply (≤6V); enables level-shifted reset signaling. |
| 3 (MR) | Manual reset input | Logic-low assertion forces immediate reset; internally pulled up to VCC (63kΩ); immune to <100ns noise pulses. |
| 4 (VCC) | Supply & monitor input | Powers device and feeds internal voltage divider; monitors same rail used for system logic; valid from 1.0V to 5.5V. |
Key Features
| Feature | Design Value |
|---|---|
| Precision factory-trimmed VTH | 2.63V ±3.5% over full temperature range eliminates need for external resistor networks or calibration. |
| Guaranteed 1ms reset timeout | Ensures μP reset pulse meets minimum assertion time requirements for ARM Cortex-M, PIC, and legacy 8051 derivatives. |
| Open-drain RESET with 6V tolerance | Allows single reset line to coordinate multiple voltage domains (e.g., 3.3V μP + 5V peripheral) without level translators. |
| MR with integrated 63kΩ pullup | Reduces BOM count by eliminating external pullup resistor; supports direct switch-to-ground manual reset. |
| Ultra-low 5μA supply current | Minimizes quiescent drain on coin-cell or LiSOCl₂ batteries in always-on monitoring applications. |
Applications
| Industrial PLC Controller | Automotive Body Control Module |
|---|---|
Use Scenario: Monitors 3.3V microcontroller supply in programmable logic controllers exposed to wide ambient temperature swings and EMI-rich factory environments. IC Role / Device Role / Timing Role: Voltage supervisor asserting active-low RESET to prevent firmware corruption during brownout events on 2.63V–3.3V rails. Use Value: Guaranteed operation from –40°C to +125°C and 100ns MR glitch rejection ensure deterministic reset behavior without external filtering. | Use Scenario: Supervises power to an MCU in body control units where battery voltage may dip below 9V during cranking, causing transient VCC sags. IC Role / Device Role / Timing Role: Detects VCC drop below 2.63V and holds RESET for ≥1ms to guarantee full MCU reset before resuming operation. Use Value: Open-drain RESET allows pullup to stable 5V domain while monitoring switched 3.3V rail - enabling robust cross-domain reset coordination. |
| Portable Medical Sensor Node | Smart Energy Meter |
Use Scenario: Powers ultra-low-power sensor nodes using CR2032 coin cells, requiring multi-year shelf life and reliable wake-from-reset behavior. IC Role / Device Role / Timing Role: Low-current (5μA) supervisor ensuring safe boot after battery insertion or voltage recovery, with manual reset via tactile switch. Use Value: Internal MR pullup and 1μs minimum MR pulse width support simple, cost-effective mechanical reset implementation without added passives. | Use Scenario: Embedded in utility-grade meters operating continuously in outdoor enclosures with wide thermal cycling and long-term reliability demands. IC Role / Device Role / Timing Role: Provides fail-safe reset supervision for dual-rail (1.8V core / 3.3V I/O) meter SoCs during AC line disturbances or capacitor aging effects. Use Value: ±3.5% VTH tolerance and 60ppm/°C tempco maintain accurate trip point over 15+ year field life without recalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6314US26D1+T | Bidirectional reset pin; supports μP reset pin sharing with other peripherals; otherwise identical VTH, tRP, and package. | Required only when μP uses shared bidirectional reset I/O (e.g., some Renesas RL78 variants); not needed for standard active-low reset inputs. | Select MAX6314US26D1+T only if your microcontroller's reset pin is bidirectional and must drive both input and output signals. |
| TPS3808G12DBVR | Fixed 1.2V reset threshold; 200ms default timeout; 2.5μA typical ICC; SOT23-5 package with enable input. | Designed for low-voltage logic rails (e.g., 1.2V FPGA cores); includes EN pin for power sequencing control - absent in MAX6315US26D1+T. | Choose TPS3808G12DBVR only for sub-1.8V supply monitoring; MAX6315US26D1+T remains optimal for 2.63V+ rails with manual reset and open-drain flexibility. |
Compared with MAX6314US26D1+T, the MAX6315US26D1+T offers simpler unidirectional reset signaling and avoids bidirectional pin contention risks; versus TPS3808G12DBVR, it provides higher VTH accuracy for mid-voltage rails and built-in MR functionality - making it more suitable for industrial μP supervision where 2.63V trip and manual reset are mandatory.
Availability
MAX6315US26D1+T is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, portable medical sensor nodes, and smart energy meters requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MAX6315US26D1+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
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Wilmington, MA, serving industrial, automotive, communications, and healthcare markets.
The MAX6315 series belongs to Analog Devices' precision voltage supervisor product line, engineered specifically for reliable, low-power, single-rail reset generation in space-constrained and thermally demanding embedded systems.
FAQ
What is the exact reset threshold voltage of the MAX6315US26D1+T?
The MAX6315US26D1+T has a factory-trimmed nominal reset threshold voltage of 2.63V, with tolerance of ±3.5% over the full –40°C to +125°C operating range. This value is laser-trimmed during manufacturing and specified in the Ordering Information table of the official Analog Devices datasheet Rev 7 (2/25/2025). The MAX6315US26D1+T does not support user adjustment.
Does the MAX6315US26D1+T require an external pullup resistor on the RESET pin?
Yes, the MAX6315US26D1+T features an open-drain RESET output and requires an external pullup resistor to establish a valid logic-high level. A 10kΩ resistor pulled to any voltage ≤6V is recommended per the datasheet. The MAX6315US26D1+T itself does not include an internal pullup on RESET - this is a deliberate design choice enabling level-shifting across supply domains.
Can the MAX6315US26D1+T monitor a 1.8V supply rail?
No - the MAX6315US26D1+T is factory-trimmed for a 2.63V reset threshold and is not specified to operate reliably below VCC = 1.0V. Its minimum operating voltage is 1.0V, but the 2.63V threshold means it cannot detect undervoltage on a 1.8V rail. For 1.8V supervision, select a variant like MAX6315US18D1+T (if offered) or an alternative supervisor such as TPS3808G18.
What is the maximum allowable pullup voltage on the RESET pin of the MAX6315US26D1+T?
The RESET pin of the MAX6315US26D1+T supports a maximum pullup voltage of +6.0V, as defined in the Absolute Maximum Ratings table. This allows the MAX6315US26D1+T to drive reset signals into higher-voltage logic domains (e.g., 5V peripherals) while monitoring a lower VCC rail - a key advantage over push-pull supervisors limited to VCC-referenced outputs.
Is the MR pin of the MAX6315US26D1+T internally pulled up, and what is its resistance value?
Yes, the MR pin of the MAX6315US26D1+T includes an internal pullup resistor with a nominal value of 63kΩ, as confirmed in the Electrical Characteristics table. This allows the MR pin to be left floating (unconnected) if manual reset is unused, or connected directly to a momentary switch tied to GND - eliminating the need for an external pullup resistor in most designs.
MAX6315US26D1+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- TO-253-4, TO-253AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.63V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 1ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-143-4
MAX6315US26D1+T FAQ
1.How can I place an order for MAX6315US26D1+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6315US26D1+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 MAX6315US26D1+T reliable?
The price and inventory of MAX6315US26D1+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6315US26D1+T is usually 5 days.
3.What payment methods are accepted for MAX6315US26D1+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6315US26D1+T transactions.
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4.How is shipping managed for MAX6315US26D1+T?
MAX6315US26D1+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6315US26D1+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 MAX6315US26D1+T?
For technical support, including MAX6315US26D1+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6315US26D1+T requirements.
6.How does Aetrix verify that MAX6315US26D1+T is sourced from the original manufacturer or authorized distributors?
All MAX6315US26D1+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 MAX6315US26D1+T meets industry standards.
7.What is the process for return or replacement of MAX6315US26D1+T?
All MAX6315US26D1+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6315US26D1+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 MAX6315US26D1+T part is unused and in its original packaging.
Return procedure for MAX6315US26D1+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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