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Analog Devices Inc./Maxim Integrated MAX6376UR23
- Part No.:
- MAX6376UR23
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6376UR23.pdf
- Description:
- IC SUPERVISOR UL LO PWR VOLT DET
- Quantity:
- Payment:
- Shipping:
Inventory:1,054
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Product details
Overview
MAX6376UR23 from Maxim Integrated is an ultra-low-power, active-high push-pull voltage detector designed for precision supply monitoring in battery-powered systems. It features a factory-trimmed 2.32V threshold (±2.5% over temperature), 500nA supply current at +25°C, and guaranteed operation down to VCC = 1V. It asserts a logic-high output when VCC falls below threshold and is used in portable equipment power sequencing and microcontroller reset supervision.
For engineers reviewing the MAX6376UR23 datasheet, MAX6376UR23 pinout, MAX6376UR23 application, or MAX6376UR23 equivalent, key selection criteria include its active-high push-pull output configuration, 2.32V trip point, SC70/SOT23-3 package compatibility, transient immunity up to 200µs at 100mV overdrive, and guaranteed output state retention down to 1V supply.
Technical Context
The MAX6376UR23 implements a precision bandgap reference and comparator with internally trimmed resistors to set its 2.32V detection threshold. Its active-high push-pull output drives high when VCC drops below VTH and remains valid down to 1V supply, eliminating need for external pull-up resistors.
It ignores fast negative-going VCC transients - maximum tolerable glitch duration is 200µs at 100mV overdrive (VTH − VCC), per typical operating characteristics. Propagation delay is 6.3µs (falling) and 9.5µs (rising) across −40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Threshold Voltage | 2.32V nominal, ±2.5% over −40°C to +85°C - ensures reliable reset assertion across industrial temperature range |
| Supply Current | 500nA at +25°C - enables multi-year battery life in coin-cell–powered devices |
| Output Type | Active-high push-pull - directly interfaces with MCU reset inputs without external pull-up |
| VCC Operating Range | 1.2V to 5.5V - supports operation during brown-out and deep discharge conditions |
| Hysteresis | 100mV - prevents output oscillation near threshold during slow supply ramp-down |
| Propagation Delay | 6.3µs (falling), 9.5µs (rising) - provides timely reset assertion with minimal latency |
| Tempco | 40ppm/°C - maintains threshold stability across wide ambient temperature swings |
Pinout & Package
MAX6376UR23 is packaged in a 3-pin SOT23-3 (lead-free -T suffix) with 1.3mm × 2.9mm footprint and 0.95mm height. Pin 1 = GND, Pin 2 = OUT, Pin 3 = VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal bandgap and comparator - must be low-impedance connection to system ground plane |
| 2 | OUT | Active-high push-pull output - sources up to 500µA and sinks up to 1.2mA; directly drives CMOS reset inputs |
| 3 | VCC | Supply input - powers internal circuitry; operates from 1.2V to 5.5V and retains valid output state down to 1V |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 500nA enables >10-year battery life in 20mAh coin cells with daily wake-up cycles |
| Precision factory-trimmed threshold | 2.32V ±2.5% eliminates manual calibration and external resistor networks |
| Push-pull active-high output | Removes need for external pull-up resistor, reducing BOM count and PCB area |
| Transient immunity | Rejects VCC glitches ≤200µs at 100mV overdrive - prevents false resets in noisy environments |
| Wide VCC operating range | Functions reliably from 1.2V to 5.5V - supports Li-ion, alkaline, and regulated 3.3V/5V rails |
Applications
| Portable Medical Sensors | Industrial IoT Edge Nodes |
|---|---|
|
Use Scenario: Coin-cell–powered wearable ECG sensor monitors heart rate every 5 minutes and transmits data via BLE. IC Role / Device Role / Timing Role: Voltage detector supervises 3.0V regulated rail and asserts active-high reset to MSP430 MCU upon battery drop below 2.32V. Use Value: 500nA supply current extends 220mAh CR2032 battery life beyond 5 years; hysteresis prevents chatter during intermittent load pulses. |
Use Scenario: Battery-backed LoRaWAN node deployed in remote utility metering with 10-year field life requirement. IC Role / Device Role / Timing Role: Supervises buck converter output (3.3V) and triggers controlled shutdown sequence when input LiFePO₄ drops to 2.32V. Use Value: Guaranteed 1V minimum VCC operation allows full utilization of battery discharge curve; push-pull output directly enables PMIC enable control. |
| Smart Home Motion Detectors | Asset Tracking Beacons |
|
Use Scenario: PIR-based occupancy sensor powered by two AA alkaline cells, waking every 30 seconds to check motion. IC Role / Device Role / Timing Role: Monitors unregulated 2.4–3.2V battery stack and asserts reset to nRF52840 when voltage decays to 2.32V. Use Value: ±2.5% threshold accuracy ensures consistent low-battery detection across temperature; SC70/SOT23-3 footprint fits tight 12mm × 12mm PCB area. |
Use Scenario: GPS-enabled logistics tracker using 3.7V Li-ion with fuel gauge and periodic location reporting. IC Role / Device Role / Timing Role: Detects end-of-life battery condition (2.32V) and signals host STM32L4 to initiate graceful data save and deep sleep. Use Value: 6.3µs propagation delay ensures deterministic reset timing; 40ppm/°C tempco maintains accuracy from −25°C warehouse to +60°C vehicle cabin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EB23DBZR | 2.32V threshold, open-drain active-low output, 350nA ICC, SOT23-3 | Requires external pull-up; compatible only where active-low reset is accepted | Select if system uses active-low reset and lowest possible ICC is critical |
| TPS3801K23DBVR | 2.32V threshold, push-pull active-high output, 1.1µA ICC, SOT23-3 | Higher supply current reduces battery lifetime in ultra-low-power designs | Select if higher drive strength (20mA sink/source) is required for legacy MCU inputs |
Compared with TLV803EB23DBZR and TPS3801K23DBVR, the MAX6376UR23 uniquely combines active-high push-pull output, 500nA supply current, and ±2.5% threshold accuracy in SOT23-3 - making it optimal for space-constrained, long-life battery applications requiring direct reset assertion without external components.
Availability
MAX6376UR23 is available at Aetrix Electronics and suitable for portable medical sensors, industrial IoT edge nodes, smart home motion detectors, asset tracking beacons, and battery-powered instrumentation requiring stable component supply and long-term lifecycle support.
Supply support for MAX6376UR23 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 power management, sensing, and interface applications, with focus on high-reliability, low-power solutions.
The MAX6375–MAX6380 family was engineered specifically for ultra-low-power supply monitoring in battery-critical systems - delivering factory-trimmed thresholds, sub-µA operation, and robust transient immunity in miniature SC70/SOT23 packages.
FAQ
What is the exact threshold voltage and tolerance of the MAX6376UR23?
The MAX6376UR23 has a nominal threshold voltage of 2.32V with ±2.5% accuracy over the full operating temperature range of −40°C to +85°C. This specification is guaranteed by design and confirmed in the Electrical Characteristics table. The device uses factory-trimmed internal resistors and a precision bandgap reference to achieve this tolerance without external components. The MAX6376UR23 maintains this accuracy while consuming only 500nA at +25°C.
Does the MAX6376UR23 require an external pull-up resistor on its output?
No, the MAX6376UR23 does not require an external pull-up resistor because it features an active-high push-pull output stage. Pin 2 (OUT) actively drives high when VCC falls below 2.32V and actively drives low when VCC rises above the threshold plus hysteresis. This eliminates the need for external biasing components, simplifying PCB layout and reducing BOM cost. The MAX6376UR23 can directly interface with standard CMOS reset inputs.
What is the minimum VCC voltage at which the MAX6376UR23 guarantees correct output logic state?
The MAX6376UR23 guarantees correct output logic state - i.e., asserted high when VCC < VTH and deasserted low when VCC > VTH + hysteresis - down to VCC = 1V. This is explicitly stated in the General Description and verified across −40°C to +85°C. Operation below 1.2V is outside the specified operating range but the output remains functional and predictable down to 1V, enabling use in deeply discharged battery scenarios.
How does the MAX6376UR23 handle short voltage transients on the VCC line?
The MAX6376UR23 is designed to ignore fast negative-going VCC transients. According to the Typical Operating Characteristics graph "Maximum Transient Duration vs. Threshold Overdrive", it rejects glitches up to 200µs in duration when the overdrive (VTH − VCC) is 100mV. This built-in immunity prevents false resets caused by switching noise or load transients, ensuring system reliability without requiring additional filtering components.
Which package variants are available for the MAX6376UR23, and what is its marking code?
The MAX6376UR23 is offered exclusively in the 3-pin SOT23-3 package with lead-free finish (−T suffix). Its top-side marking code is "FZHI", as listed in Table 2 of the datasheet under "MAX6376_R23-T". It is not available in SC70-3 - that variant is designated MAX6376XR23-T with marking "ADM". Both share identical electrical specifications but differ in package dimensions and thermal performance.
MAX6376UR23 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Voltage Detector
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.32V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
MAX6376UR23 FAQ
1.How can I place an order for MAX6376UR23 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6376UR23 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 MAX6376UR23 reliable?
The price and inventory of MAX6376UR23 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6376UR23 is usually 5 days.
3.What payment methods are accepted for MAX6376UR23?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6376UR23 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6376UR23?
MAX6376UR23 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6376UR23 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 MAX6376UR23?
For technical support, including MAX6376UR23 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6376UR23 requirements.
6.How does Aetrix verify that MAX6376UR23 is sourced from the original manufacturer or authorized distributors?
All MAX6376UR23 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 MAX6376UR23 meets industry standards.
7.What is the process for return or replacement of MAX6376UR23?
All MAX6376UR23 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6376UR23, 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 MAX6376UR23 part is unused and in its original packaging.
Return procedure for MAX6376UR23:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6376UR23 Tags
-
MIC826SYMT-TR
Microchip Technology
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APX803S-31SA-7
Diodes Incorporated
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APX803L20-29SA-7
Diodes Incorporated
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V6340RSP3B+
EM Microelectronic
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EM6325CXSP5B-2.9+
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MCP120T-300I/TT
Microchip Technology
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MCP130T-315I/TT
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MCP120T-475I/TT
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MCP111T-300E/TT
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MCP120T-315I/TT
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MCP809T-315I/TT
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