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Analog Devices Inc./Maxim Integrated MAX6377UR30+T
- Part No.:
- MAX6377UR30+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6377UR30+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,887
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Product details
Overview
MAX6377UR30+T from Maxim Integrated is an ultra-low-power, open-drain, active-low voltage detector designed for precision supply monitoring in battery-powered systems. It features a factory-trimmed 3.00V threshold (±2.5% over temperature), 500nA supply current, and guaranteed operation down to 1V VCC. It asserts OUT low when VCC falls below VTH and is used in portable equipment power sequencing and microcontroller reset supervision.
For engineers reviewing the MAX6377UR30+T datasheet, MAX6377UR30+T pinout, MAX6377UR30+T application, or MAX6377UR30+T equivalent, key selection criteria include its 3.00V trip point, SOT23-3 open-drain output configuration, -40°C to +85°C operating range, and immunity to sub-20µs VCC transients - critical for reliable reset generation in energy-constrained embedded designs.
Technical Context
The MAX6377UR30+T implements a precision bandgap reference and comparator with internally trimmed resistors to set a fixed 3.00V detection threshold. Its open-drain output requires an external pullup and sinks current only when VCC drops below VTH, enabling flexible logic-level interfacing up to 5.5V.
It guarantees correct output state down to 1V VCC and rejects fast negative-going transients via internal filtering - propagation delay is 6.3µs (typ) with 0.1mV hysteresis. The device operates without external components and is unconditionally stable across its full temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.00V (±2.5% over -40°C to +85°C); ensures consistent brownout detection across industrial temperature range |
| Supply Current | 500nA (typ at +25°C); enables multi-year battery life in coin-cell–powered devices |
| Output Type | Active-low open-drain; allows wired-OR configuration and level-shifting with external pullup to any voltage ≤5.5V |
| VCC Operating Range | 1.2V to 5.5V; supports operation during deep brownout and compatibility with 1.8V/3.3V/5V systems |
| Propagation Delay | 6.3µs (typ, falling edge); provides fast, deterministic reset assertion for microcontrollers |
| Threshold Hysteresis | 0.1mV; prevents output chatter near trip point under noisy supply conditions |
| Tempco | 40ppm/°C; maintains tight threshold stability across temperature without calibration |
Pinout & Package
MAX6377UR30+T is housed in a 3-pin SOT23-3 package (lead-free, RoHS-compliant), with 1.3mm × 2.9mm footprint and 0.95mm height - optimized for space-constrained portable PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SOT23) | GND | Ground reference for internal bandgap and comparator; must be connected directly to system ground plane |
| 2 (SOT23) | OUT | Active-low open-drain output; sinks current when VCC < VTH; requires external pullup resistor for logic-high state |
| 3 (SOT23) | VCC | Supply input; powers internal circuitry and defines monitored voltage rail; operates from 1.2V to 5.5V |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 500nA enables >10-year battery life in always-on monitoring applications |
| Factory-trimmed threshold | 3.00V ±2.5% eliminates need for external resistor networks or calibration |
| Open-drain output architecture | Supports multi-source reset bus and interface to mixed-voltage logic domains |
| VCC transient immunity | Rejects transients ≤20µs (at 100mV overdrive), preventing false resets in noisy environments |
| No external components required | Reduces BOM count, PCB area, and assembly cost versus discrete supervisor solutions |
Applications
| Portable Medical Sensors | Industrial IoT Edge Nodes |
|---|---|
Use Scenario: Coin-cell–powered wearable ECG sensor monitors battery voltage and triggers graceful shutdown before depletion. IC Role / Device Role / Timing Role: Voltage detector providing VCC brownout signal to MCU's reset input, ensuring safe data save and power-down sequence. Use Value: 500nA supply current extends battery life beyond 5 years; 3.00V threshold aligns precisely with Li-ion discharge knee. |
Use Scenario: Remote vibration sensor node powered by energy harvesting harvests intermittent microwatts and uses supercapacitor storage. IC Role / Device Role / Timing Role: Supervisor asserting reset until harvested energy raises VCC above 3.00V, enabling reliable cold-start initialization. Use Value: Guaranteed operation down to 1V VCC ensures detection even during capacitor ramp-up; open-drain output interfaces cleanly to 1.8V MCU reset pin. |
| Smart Meter Battery Backup | Automotive Body Control Module |
Use Scenario: Smart electricity meter retains real-time clock and tamper logs during AC mains failure using backup lithium battery. IC Role / Device Role / Timing Role: Monitors backup battery voltage and asserts reset if cell drops below 3.00V, preventing corrupted NVRAM writes. Use Value: ±2.5% threshold accuracy over temperature avoids premature shutdown in outdoor enclosures; SC70/SOT23 footprint fits tight meter PCB layouts. |
Use Scenario: BCM microcontroller requires clean power-on reset after vehicle ignition, but experiences load-dump and cold-crank transients. IC Role / Device Role / Timing Role: Detects regulated 3.3V supply rail and holds MCU in reset until voltage stabilizes above 3.00V post-cranking. Use Value: Immunity to sub-20µs transients prevents spurious resets during engine start; 1.2V–5.5V VCC range accommodates wide-input DC/DC outputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EB30DBZR | 3.00V threshold, push-pull active-low output, 350nA ICC, SOT23-3 | Lacks open-drain flexibility; cannot share reset bus or level-shift; requires compatible MCU input | Choose when board layout prohibits external pullup or MCU reset pin accepts only push-pull drive |
| APX803S-30SA-7 | 3.00V threshold, open-drain active-low, 600nA ICC, SOT23-3, ±2% accuracy | Slightly tighter threshold tolerance but higher supply current; same pinout and function | Prefer when ±2% threshold accuracy is mandatory and 100nA extra current is acceptable |
Compared with TLV803EB30DBZR and APX803S-30SA-7, the MAX6377UR30+T delivers optimal trade-off of ultra-low 500nA current, proven open-drain interoperability, and robust transient rejection - making it ideal for battery longevity and multi-rail system integration where reset bus sharing is required.
Availability
MAX6377UR30+T is available at Aetrix Electronics and suitable for portable medical sensors, industrial IoT edge nodes, smart meter battery backup, and automotive body control modules requiring stable component supply, long-lifecycle support, and lead-free compliance.
Supply support for MAX6377UR30+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 semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.
The MAX6375–MAX6380 family was designed specifically for ultra-low-power voltage monitoring in space- and energy-constrained systems - delivering precision reset supervision without external components or calibration.
FAQ
What is the exact reset threshold voltage of the MAX6377UR30+T?
The MAX6377UR30+T has a factory-trimmed nominal reset threshold of 3.00V, with guaranteed accuracy of ±2.5% over the full -40°C to +85°C operating temperature range. This value is confirmed in Table 1 of the datasheet under suffix "R30", and applies specifically to the MAX6377UR30+T variant - not to other members of the MAX6375–MAX6380 family.
Does the MAX6377UR30+T require an external pullup resistor on the OUT pin?
Yes, the MAX6377UR30+T features an open-drain output, so an external pullup resistor is mandatory to establish a valid logic-high state on the OUT pin. The datasheet specifies that the pullup may connect to any supply up to 5.5V, and recommends selecting a resistor value that ensures VOL ≤0.4V at ISINK = 100µA while meeting downstream input leakage requirements.
Can the MAX6377UR30+T operate reliably below 1.8V VCC?
Yes, the MAX6377UR30+T is fully specified to operate down to 1.2V VCC and guarantees correct output logic state (OUT asserted low when VCC < VTH) for VCC as low as 1V. This capability is explicitly stated in the General Description and Electrical Characteristics sections, enabling use in ultra-low-voltage energy-harvesting and deep-brownout scenarios.
What is the maximum transient duration the MAX6377UR30+T can ignore at 100mV overdrive?
At a threshold overdrive of 100mV (i.e., VTH − VCC = 100mV), the MAX6377UR30+T can ignore negative-going VCC transients up to approximately 20µs in duration, as shown in Figure MAX6375-04 ("Maximum Transient Duration vs. Threshold Overdrive"). This immunity prevents false resets during switching noise or load transients.
Is the MAX6377UR30+T pin-compatible with other devices in the MAX6375–MAX6380 family?
Yes, all MAX6375–MAX6380 variants - including MAX6377UR30+T - share identical 3-pin SOT23-3 and SC70-3 footprints and pinouts (GND, OUT, VCC). However, output logic type (open-drain vs. push-pull) and threshold voltage differ by part number, so electrical compatibility must be verified per application - the physical layout is interchangeable.
MAX6377UR30+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Voltage Detector
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
MAX6377UR30+T FAQ
1.How can I place an order for MAX6377UR30+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6377UR30+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 MAX6377UR30+T reliable?
The price and inventory of MAX6377UR30+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6377UR30+T is usually 5 days.
3.What payment methods are accepted for MAX6377UR30+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6377UR30+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6377UR30+T?
MAX6377UR30+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6377UR30+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 MAX6377UR30+T?
For technical support, including MAX6377UR30+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6377UR30+T requirements.
6.How does Aetrix verify that MAX6377UR30+T is sourced from the original manufacturer or authorized distributors?
All MAX6377UR30+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 MAX6377UR30+T meets industry standards.
7.What is the process for return or replacement of MAX6377UR30+T?
All MAX6377UR30+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6377UR30+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 MAX6377UR30+T part is unused and in its original packaging.
Return procedure for MAX6377UR30+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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