My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6376UR31-T
- Part No.:
- MAX6376UR31-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6376UR31-T.pdf
- Description:
- IC SUPERVISOR UL LO PWR VOLT DET
- Quantity:
- Payment:
- Shipping:
Inventory:14,928
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6376UR31-T from Maxim Integrated is an ultra-low-power, active-high push-pull voltage detector designed for precision supply monitoring in battery-powered systems. It asserts a logic-high output when VCC falls below 3.08V (±2.5% over temperature), draws only 500nA supply current, and operates reliably down to 1V supply. It is used in portable equipment for reset generation during brownout conditions.
For engineers reviewing the MAX6376UR31-T datasheet, MAX6376UR31-T pinout, MAX6376UR31-T application, or MAX6376UR31-T equivalent, key selection criteria include threshold accuracy, ultra-low quiescent current, push-pull output drive capability, and SOT23-3 package compatibility with space-constrained PCB layouts.
Technical Context
The MAX6376UR31-T integrates a precision bandgap reference, comparator, and factory-trimmed resistive divider to deliver a fixed 3.08V detection threshold with ±2.5% accuracy across –40°C to +85°C. Its internal hysteresis of 100mV prevents output chatter during slow VCC recovery.
It features transient immunity-rejecting negative-going VCC glitches up to 200µs at 100mV overdrive-and guarantees correct output state down to VCC = 1V. The push-pull output drives high (VOH ≥ 0.8×VCC) and low (VOL ≤ 0.4V) without external pull-up components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.08V ±2.5% over –40°C to +85°C - ensures reliable brownout detection across industrial temperature range |
| Supply Current | 500nA typical - enables multi-year operation on coin-cell batteries in always-on monitoring applications |
| Output Type | Active-high push-pull - eliminates need for external pull-up resistor and supports direct MCU reset input |
| Propagation Delay | 20µs max (falling edge) - provides fast response to supply collapse without excessive sensitivity to noise |
| VCC Operating Range | 1.2V to 5.5V - supports monitoring of Li+ cells, 3.3V/5V rails, and post-regulator supplies |
| Hysteresis | 100mV - prevents oscillation during slow-rising VCC recovery near threshold |
| Output Drive | VOH ≥ 0.8×VCC @ 500µA, VOL ≤ 0.4V @ 1.2mA - ensures TTL/CMOS-compatible logic levels into typical reset inputs |
Pinout & Package
MAX6376UR31-T is housed in a 3-pin SOT23-3 package (JEDEC MO-178AA), with pin 1 = GND, pin 2 = OUT, pin 3 = VCC. The compact 2.92mm × 1.3mm footprint supports high-density portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal bandgap and comparator - must be connected directly to system ground plane |
| 2 | OUT | Active-high push-pull output - drives high during undervoltage condition; sinks/source current per spec without external components |
| 3 | VCC | Supply input - powers internal circuitry and sets operating range; accepts 1.2V–5.5V with guaranteed functionality down to 1V |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low 500nA supply current | Extends battery life in always-on monitoring circuits - e.g., >10 years on CR2032 at 3.0V nominal |
| Factory-trimmed 3.08V threshold | Eliminates external resistor networks and calibration - reduces BOM count and assembly cost |
| Push-pull active-high output | Directly interfaces with standard microcontroller reset pins requiring active-high assertion - no level-shifting needed |
| 100mV internal hysteresis | Prevents false resets during marginal supply recovery - avoids system lockup in noisy or weak power environments |
| Transient immunity up to 200µs | Rejects short-duration supply glitches - maintains stable reset state during switching noise or load transients |
Applications
| Wearable Health Monitor | Industrial Sensor Node |
|---|---|
Use Scenario: Continuous ECG logging powered by a single Li+ cell with no user-replaceable battery. IC Role / Device Role / Timing Role: Voltage detector asserting active-high reset to microcontroller when cell voltage drops below 3.08V. Use Value: Prevents data corruption and flash write errors by halting operation before supply becomes insufficient for reliable MCU execution. |
Use Scenario: Wireless temperature sensor deployed in remote locations with solar-charged LiFePO₄ battery. IC Role / Device Role / Timing Role: Brownout supervisor triggering controlled shutdown sequence via GPIO when regulated 3.3V rail sags below 3.08V. Use Value: Ensures EEPROM integrity and graceful radio shutdown - avoids RF transmission failure due to undervoltage-induced timing faults. |
| Smart Meter Backup Power | Portable Diagnostic Tool |
Use Scenario: Utility meter retaining real-time clock and tamper logs during main AC power loss using supercapacitor backup. IC Role / Device Role / Timing Role: Monitoring supercapacitor voltage to assert reset before RTC voltage falls below operational minimum. Use Value: Guarantees accurate timekeeping and non-volatile event logging even during extended outages - meets ANSI C12.1 compliance requirements. |
Use Scenario: Handheld medical diagnostic device using dual AA alkaline cells with variable discharge profile. IC Role / Device Role / Timing Role: Detecting end-of-life battery condition (≤3.08V) to trigger low-battery warning and prevent unexpected shutdown during measurement. Use Value: Enables user-initiated save-and-power-down sequence - preserves unsaved clinical readings and calibration data. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803SDBZR | 3.08V threshold, 350nA IQ, open-drain output, SOT23-3 | Requires external pull-up; not directly compatible with active-high reset inputs | Select when lowest possible IQ is critical and system design accommodates open-drain interface |
| APX803S-30SA-7 | 3.0V threshold (±1%), 600nA IQ, push-pull active-high, SOT23-3 | 0.08V lower threshold; tighter 1% accuracy but higher supply current | Choose when tighter threshold tolerance is required and 100nA higher IQ is acceptable |
Compared with TLV803SDBZR and APX803S-30SA-7, the MAX6376UR31-T uniquely balances 3.08V precision, 500nA ultra-low IQ, and active-high push-pull output in a standard SOT23-3 footprint - making it optimal for battery-critical systems needing direct MCU reset integration without layout changes.
Availability
MAX6376UR31-T is available at Aetrix Electronics and suitable for portable medical devices, industrial wireless sensors, smart utility meters, and handheld test equipment requiring stable component supply and long-term availability.
Supply support for MAX6376UR31-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 analog, mixed-signal, and power-management ICs for industrial, automotive, and communications markets.
The MAX6375–MAX6380 family was designed specifically for ultra-low-power supply monitoring in battery-operated and energy-harvested systems where minimal quiescent current and precise voltage thresholds are essential.
FAQ
What is the exact reset threshold voltage of the MAX6376UR31-T?
The MAX6376UR31-T has a factory-trimmed nominal reset threshold of 3.08V, with guaranteed accuracy of ±2.5% over the full operating temperature range of –40°C to +85°C. This value is confirmed in Table 1 of the official datasheet and applies specifically to the "R31" suffix variant. The MAX6376UR31-T does not require external calibration or trimming to achieve this specification.
Does the MAX6376UR31-T require an external pull-up resistor on its output?
No, the MAX6376UR31-T features an active-high push-pull output that actively drives both high and low states. Unlike open-drain detectors, it does not require an external pull-up resistor. The output delivers VOH ≥ 0.8×VCC at 500µA source current and VOL ≤ 0.4V at 1.2mA sink current - fully compatible with standard CMOS/TTL reset inputs without additional components.
What is the minimum supply voltage at which the MAX6376UR31-T guarantees correct output logic state?
The MAX6376UR31-T guarantees correct output logic state down to VCC = 1V, as explicitly stated in the General Description and Electrical Characteristics sections of the datasheet. This ensures reliable reset assertion even during deep battery discharge or low-voltage brownout conditions where other detectors may fail to respond.
Can the MAX6376UR31-T be used to monitor a 5V supply rail?
Yes, the MAX6376UR31-T supports VCC inputs from 1.2V to 5.5V, making it fully suitable for monitoring 5V rails. Its 3.08V threshold is appropriate for detecting brownout conditions on 5V systems - for example, triggering reset before downstream LDOs drop out or digital logic becomes unstable. The device remains functional and accurate across this entire range.
What package type and pin configuration does the MAX6376UR31-T use?
The MAX6376UR31-T uses the 3-pin SOT23-3 package (JEDEC MO-178AA) with standard pinout: pin 1 = GND, pin 2 = OUT, pin 3 = VCC. This matches the SC70-3 pinout electrically but differs mechanically - the SOT23-3 variant is specified in the Ordering Information table and confirmed by top-mark "FZHL" in Table 2. No adapter or footprint change is needed when substituting within the same package family.
MAX6376UR31-T 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:
- 3.08V
- 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
MAX6376UR31-T FAQ
1.How can I place an order for MAX6376UR31-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6376UR31-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 MAX6376UR31-T reliable?
The price and inventory of MAX6376UR31-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6376UR31-T is usually 5 days.
3.What payment methods are accepted for MAX6376UR31-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6376UR31-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6376UR31-T?
MAX6376UR31-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6376UR31-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 MAX6376UR31-T?
For technical support, including MAX6376UR31-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6376UR31-T requirements.
6.How does Aetrix verify that MAX6376UR31-T is sourced from the original manufacturer or authorized distributors?
All MAX6376UR31-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 MAX6376UR31-T meets industry standards.
7.What is the process for return or replacement of MAX6376UR31-T?
All MAX6376UR31-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6376UR31-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 MAX6376UR31-T part is unused and in its original packaging.
Return procedure for MAX6376UR31-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6376UR31-T Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
