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Analog Devices Inc./Maxim Integrated MAX6315US46D1+T
- Part No.:
- MAX6315US46D1+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6315US46D1+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:2,143
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Product details
Overview
MAX6315US46D1+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 4.63V or when manual reset (MR) is asserted. It guarantees reset assertion for ≥1ms after VCC recovery or MR release, supports operation from 1.0V to 5.5V, draws only 5μA at 5.5V, and is qualified for -40°C to +125°C industrial/automotive environments.
For engineers reviewing the MAX6315US46D1+T datasheet, MAX6315US46D1+T pinout, MAX6315US46D1+T application, or MAX6315US46D1+T equivalent, this page delivers verified reset threshold (4.63V), timeout (1ms min), supply current (5μA), temperature range (-40°C to +125°C), and SOT23-4 package data - all critical for power-monitoring reliability in battery-powered and embedded control systems.
Technical Context
The MAX6315US46D1+T implements a precision voltage-monitoring comparator with factory-trimmed resistive divider setting nominal VTH = 4.63V ±3.5% over -40°C to +125°C, and integrates a monostable timer for fixed 1ms minimum reset timeout. Its open-drain RESET output sinks up to 3.2mA at VCC > 4.25V and tolerates pullup voltages up to +6.0V - enabling level-shifted reset signaling across supply domains.
MR input includes internal 63kΩ pullup, accepts logic-low pulses ≥1μs, rejects glitches <100ns, and triggers reset with ≤500ns delay. Immunity to short VCC transients is ensured by comparator overdrive response curves validated down to 35μs power-down delay and normalized threshold drift of ±0.004 over temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VTH Nominal | 4.63V - factory-trimmed threshold ensures accurate brownout detection for 5V systems without external calibration. |
| tRP Min | 1ms - guaranteed minimum reset pulse width prevents premature μP release during slow VCC ramp-up. |
| ICC | 5μA at VCC = 5.5V - ultra-low quiescent current extends battery life in portable equipment. |
| Operating Temp | -40°C to +125°C - full industrial/automotive temperature qualification enables use in under-hood or harsh-environment controllers. |
| RESET Output | Open-drain, 0.4V max VOL at 3.2mA - supports flexible pullup to any supply ≤6V, including higher-voltage domains for level shifting. |
| MR Input | Internal 63kΩ pullup - eliminates need for external resistor; momentary switch to GND suffices for manual reset. |
| VCC Range | 1.0V to 5.5V - operates through deep brownout and supports wide-input power architectures. |
Pinout & Package
MAX6315US46D1+T is housed in a 4-pin SOT23 package (outline 21-0052, land pattern 90-0183), measuring 2.9mm × 1.6mm × 1.1mm, RoHS-compliant, with gull-wing leads and thermal pad not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground reference | System ground return path; must be low-impedance connection to minimize noise coupling into reset comparator. |
| 2 (RESET) | Active-low open-drain output | Drives reset line low during fault; requires external pullup; can interface to supplies up to +6V independent of VCC. |
| 3 (MR) | Manual reset input | Logic-low assertion forces reset; internally pulled up to VCC; debounced via 100ns glitch rejection and 1μs minimum pulse requirement. |
| 4 (VCC) | Supply and monitor input | Power source and monitored rail; internal divider samples this node to detect undervoltage; valid from 1.0V to 5.5V. |
Key Features
| Feature | Design Value |
|---|---|
| Precision 4.63V reset threshold | Factory-trimmed to ±3.5% over full temperature range - eliminates calibration overhead and ensures consistent 5V system brownout response. |
| 1ms minimum reset timeout | Internally timed guarantee - prevents μP initialization before power rails stabilize, even during fast VCC recovery. |
| Open-drain RESET with 6V tolerance | Enables reset signaling across isolated or higher-voltage domains (e.g., 5V μP reset driven from 3.3V supply monitoring). |
| 5μA supply current at 5.5V | Reduces standby power in always-on monitoring circuits - critical for >10-year battery life in IoT sensors and portable instruments. |
| MR with integrated 63kΩ pullup | Removes external BOM item; supports direct switch-to-GND implementation - simplifies PCB layout and reduces cost. |
Applications
| Industrial PLC Controllers | Battery-Powered Data Loggers |
|---|---|
|
Use Scenario: Programmable logic controllers operating in factory-floor environments with fluctuating 24VDC-derived 5V rails subject to load transients and EMI. IC Role / Device Role / Timing Role: Voltage supervisor asserting RESET during brownout events to prevent corrupted I/O state or firmware execution errors. Use Value: 4.63V threshold matches nominal 5V rail tolerance; 1ms timeout ensures deterministic recovery after transient dips; -40°C to +125°C rating sustains reliability in uncontrolled enclosures. |
Use Scenario: Remote environmental sensors powered by coin-cell or Li-SOCl₂ batteries, requiring multi-year operation with periodic wake-up and data transmission. IC Role / Device Role / Timing Role: Low-power supply monitor that holds μC in reset during startup until regulated 3.3V rail stabilizes, then releases with precise timing. Use Value: 5μA ICC extends battery service life; 1.0V operational lower limit allows function down to end-of-life battery voltage; SOT23-4 footprint minimizes board area. |
| Automotive Body Control Modules | Medical Handheld Diagnostics |
|
Use Scenario: Under-hood BCMs exposed to wide ambient temperature swings and load-dump-induced supply sags on 5V domains. IC Role / Device Role / Timing Role: Supervisory circuit detecting VCC sag below 4.63V and asserting RESET for ≥1ms to safeguard EEPROM writes and CAN controller initialization. Use Value: ±3.5% VTH accuracy over -40°C to +125°C ensures consistent trip point across temperature; immunity to <100ns MR glitches prevents false resets in noisy electrical environments. |
Use Scenario: Portable diagnostic tools with dual-supply architecture (e.g., 5V analog front-end, 3.3V digital core), requiring coordinated reset sequencing. IC Role / Device Role / Timing Role: Open-drain RESET output pulled to 5V domain while monitoring 3.3V VCC - enabling cross-rail reset coordination without level translators. Use Value: RESET output rated to +6.0V allows safe interfacing to higher-voltage subsystems; 0.4V VOL at 3.2mA ensures clean logic-low assertion into μC reset pins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6315US46D2+T | Same 4.63V threshold but 20ms minimum reset timeout instead of 1ms. | Suitable for systems requiring longer reset hold time during slower power-up sequences (e.g., FPGA configuration or multi-rail sequencing). | Select MAX6315US46D2+T only if extended reset duration is required; otherwise MAX6315US46D1+T provides optimal timing for fast-boot μPs. |
| TLV803EB29DBZR | 2.93V threshold, 140ms timeout, 1.8–6V VCC range, SOT23-3 package with push-pull RESET. | Lacks manual reset (MR) pin and open-drain flexibility; not suitable for level-shifting or systems requiring MR functionality. | Choose TLV803EB29DBZR only for cost-sensitive, single-threshold, no-MR designs; MAX6315US46D1+T retains MR and open-drain advantages for complex systems. |
Compared with MAX6315US46D2+T and TLV803EB29DBZR, the MAX6315US46D1+T uniquely combines 4.63V precision threshold, 1ms fast timeout, manual reset capability, and open-drain level-shifting - making it the optimal choice for 5V microprocessor systems demanding rapid, robust, and flexible power supervision.
Availability
MAX6315US46D1+T is available at Aetrix Electronics and suitable for industrial PLC controllers, battery-powered data loggers, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6315US46D1+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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.
The MAX6315 family is part of Analog Devices' precision supervisory IC portfolio, engineered specifically for reliable, low-power, factory-calibrated voltage monitoring in microprocessor-based systems where deterministic reset behavior is mission-critical.
FAQ
What is the exact reset threshold voltage of the MAX6315US46D1+T?
The MAX6315US46D1+T has a factory-trimmed nominal reset threshold of 4.63V, with tolerance of ±3.5% over the full -40°C to +125°C operating temperature range. This value is laser-trimmed during production and does not require external calibration. The MAX6315US46D1+T is specified to assert RESET whenever VCC falls below this threshold and maintain it for ≥1ms after VCC rises above it.
Does the MAX6315US46D1+T support manual reset functionality?
Yes, the MAX6315US46D1+T includes a dedicated MR (manual reset) input on pin 3. A logic-low pulse ≥1μs on MR forces RESET assertion regardless of VCC level, and reset remains active for the full 1ms timeout after MR returns high. An internal 63kΩ pullup resistor allows MR to be left floating if unused, or connected directly to a momentary switch to ground for operator-initiated reset.
Can the RESET output of the MAX6315US46D1+T be pulled up to a voltage higher than VCC?
Yes, the RESET output of the MAX6315US46D1+T is an open-drain n-channel MOSFET rated for up to +6.0V on the drain terminal. This allows the output to be pulled up to a higher-voltage rail (e.g., 5V) while monitoring a lower VCC (e.g., 3.3V), enabling level-shifted reset signaling without external translators - a key feature confirmed in the Absolute Maximum Ratings and Pin Description sections of the datasheet.
What is the supply current consumption of the MAX6315US46D1+T at 5.5V?
The MAX6315US46D1+T draws only 5μA typical supply current at VCC = 5.5V and TA = -40°C to +85°C, rising to 15μA maximum at +125°C. This ultra-low ICC enables use in always-on battery-powered applications such as portable medical devices and remote sensors where multi-year operation is required without maintenance.
Is the MAX6315US46D1+T pin-compatible with other supervisory ICs?
The MAX6315US46D1+T is pin-compatible with the MAX811 series in the same SOT23-4 package, sharing identical pinout (VCC, MR, RESET, GND) and functional behavior. However, it is not pin-compatible with SOT23-3 devices like the TLV803EB29DBZR due to the absence of the MR pin. Always verify pin mapping and electrical compatibility before substitution - the MAX6315US46D1+T's MR and open-drain features differentiate it from 3-pin alternatives.
MAX6315US46D1+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:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.63V
- 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
MAX6315US46D1+T FAQ
1.How can I place an order for MAX6315US46D1+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6315US46D1+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 MAX6315US46D1+T reliable?
The price and inventory of MAX6315US46D1+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6315US46D1+T is usually 5 days.
3.What payment methods are accepted for MAX6315US46D1+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6315US46D1+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6315US46D1+T?
MAX6315US46D1+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6315US46D1+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 MAX6315US46D1+T?
For technical support, including MAX6315US46D1+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6315US46D1+T requirements.
6.How does Aetrix verify that MAX6315US46D1+T is sourced from the original manufacturer or authorized distributors?
All MAX6315US46D1+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 MAX6315US46D1+T meets industry standards.
7.What is the process for return or replacement of MAX6315US46D1+T?
All MAX6315US46D1+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6315US46D1+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 MAX6315US46D1+T part is unused and in its original packaging.
Return procedure for MAX6315US46D1+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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