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Analog Devices Inc./Maxim Integrated MAX6377XR27-T
- Part No.:
- MAX6377XR27-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6377XR27-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,354
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Product details
Overview
MAX6377XR27-T from Maxim Integrated is an ultra-low-power, open-drain, active-low voltage detector with a factory-trimmed threshold of 2.700V ±2.5% over -40°C to +85°C, 500nA supply current, and SC70-3 package. It monitors VCC in battery-powered systems and asserts OUT low when supply drops below threshold-used for reset generation in portable microcontroller applications.
For engineers reviewing the MAX6377XR27-T datasheet, MAX6377XR27-T pinout, MAX6377XR27-T application, or MAX6377XR27-T equivalent, key selection criteria include its 2.7V trip point, open-drain output compatibility with mixed-voltage logic, immunity to sub-20µs VCC transients, and suitability for space-constrained, long-battery-life designs.
Technical Context
The MAX6377XR27-T implements a precision bandgap reference and comparator with internally trimmed resistors to set its 2.700V threshold. Its open-drain output requires an external pull-up and sinks up to 100µA while asserted, enabling flexible interface to 1.2V–5.5V logic domains.
Designed for robustness in noisy environments, it ignores fast negative-going VCC transients (≤20µs at 100mV overdrive) and maintains valid output state down to 1V VCC. Propagation delay is 6.3µs typical (falling edge), with ±2.5% threshold accuracy across temperature and 40ppm/°C tempco.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Threshold Voltage | 2.700V ±2.5% (–40°C to +85°C); ensures reliable reset assertion across industrial temperature range |
| Supply Current | 500nA typical; enables >10-year battery life in coin-cell–powered devices |
| Output Type | Active-low open-drain; supports wired-OR, level-shifting, and multi-source reset bus architectures |
| Propagation Delay | 6.3µs typical (falling), 9.5µs max; provides deterministic timing for MCU reset sequencing |
| VCC Operating Range | 1.2V to 5.5V; allows operation during brown-out and post-power-up monitoring |
| Output Leakage | 0.8 × VCC max (open-drain OFF); guarantees high-impedance release for clean logic-high transitions |
| Package | SC70-3 (2.0mm × 1.25mm × 0.95mm); fits 0402-footprint constrained PCB layouts |
Pinout & Package
MAX6377XR27-T is housed in a 3-pin SC70 package (2.0mm × 1.25mm × 0.95mm), optimized for ultra-compact portable designs. Pin 1 = GND, Pin 2 = OUT (open-drain), Pin 3 = VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Reference ground return path; must be low-impedance connection to system ground plane |
| 2 | OUT | Active-low open-drain output; requires external pull-up resistor to define logic-high voltage domain |
| 3 | VCC | Supply input; powers internal bandgap and comparator; operates from 1.2V to 5.5V |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low ICC | 500nA typical enables multi-year operation on CR2032 batteries without compromising reset accuracy |
| Factory-trimmed VTH | 2.700V ±2.5% eliminates need for external resistor dividers or calibration in production |
| Transient immunity | Rejects VCC glitches ≤20µs duration, preventing false resets in electrically noisy environments |
| No external components | Self-contained detection circuit reduces BOM count, layout area, and qualification effort |
| Wide VCC range | 1.2V–5.5V operation supports legacy and modern low-voltage MCUs and PMICs |
Applications
| Portable Medical Sensors | Industrial IoT Edge Nodes |
|---|---|
|
Use Scenario: Coin-cell–powered wearable ECG sensor operating for 3+ years between battery replacements. IC Role / Device Role / Timing Role: Voltage supervisor asserting active-low reset to ARM Cortex-M0+ MCU upon battery decay below 2.7V. Use Value: 500nA quiescent current extends usable battery life by >35% versus 1µA alternatives; SC70 footprint saves 40% board area vs. SOT23. |
Use Scenario: Battery-backed wireless vibration monitor deployed in remote factory machinery. IC Role / Device Role / Timing Role: Open-drain reset generator tied to shared system reset bus with multiple SoCs and transceivers. Use Value: Pull-up to 3.3V logic domain enables interoperability with mixed-voltage peripherals; 6.3µs propagation ensures synchronous reset release. |
| Smart Meter Backup Power | USB-C Power Bank Monitoring |
|
Use Scenario: Lithium-thionyl chloride–powered utility meter retaining RTC and memory during main power loss. IC Role / Device Role / Timing Role: Supervisory circuit triggering backup power switchover when primary rail falls below 2.7V. Use Value: Guaranteed correct output state down to 1V VCC ensures reliable handoff even during deep discharge; ±2.5% VTH tolerance meets ANSI C12.1 accuracy requirements. |
Use Scenario: Dual-cell Li-ion power bank with integrated USB PD controller requiring precise undervoltage lockout. IC Role / Device Role / Timing Role: Secondary voltage monitor asserting fault signal to protection IC when cell voltage decays below 2.7V/cell. Use Value: Open-drain output interfaces directly to 5V-tolerant enable pin of load switch; 20µs transient rejection prevents nuisance shutdown during USB hot-plug events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EB27DBZR | 2.7V threshold, 350nA ICC, SOT23-3, push-pull active-low output | Requires no pull-up but lacks open-drain flexibility; not suitable for wired-OR buses | Select when board-level reset bus uses single-source push-pull drive and minimal leakage is critical |
| APX803S-27SA-7 | 2.7V threshold, 600nA ICC, SOT23-3, open-drain active-low output, –40°C to +125°C rating | Wider temperature range; higher ICC increases battery drain by 20% vs. MAX6377XR27-T | Select for automotive under-hood or extended-temperature industrial use where 125°C operation is required |
Compared with TLV803EB27DBZR and APX803S-27SA-7, the MAX6377XR27-T uniquely balances ultra-low ICC (500nA), open-drain flexibility, and industrial-grade temperature performance in the smallest SC70 footprint-making it optimal for size- and battery-limited portable electronics.
Availability
MAX6377XR27-T is available at Aetrix Electronics and suitable for portable medical sensors, industrial IoT edge nodes, smart meter backup power systems, and USB-C power bank monitoring requiring stable component supply and long-term manufacturability.
Supply support for MAX6377XR27-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) designs precision analog and mixed-signal ICs for power, sensing, and connectivity in demanding industrial, medical, and communications applications.
The MAX6375–MAX6380 family delivers ultra-low-power, factory-trimmed voltage supervision for battery-critical systems-enabling reliable reset generation without external components or calibration.
FAQ
What is the exact factory-trimmed threshold voltage of the MAX6377XR27-T?
The MAX6377XR27-T has a nominal threshold voltage of 2.700V, with guaranteed accuracy of ±2.5% over the full –40°C to +85°C temperature range. This value is laser-trimmed at wafer test and confirmed in the Electrical Characteristics table of the official datasheet (Rev 3, 12/05), where VTH min = 2.633V and max = 2.768V at temperature extremes.
Does the MAX6377XR27-T require an external pull-up resistor on its OUT pin?
Yes, the MAX6377XR27-T features an open-drain output and requires an external pull-up resistor to establish the logic-high voltage level. The datasheet specifies that the pull-up may connect to any supply up to 5.5V, and recommends selecting a resistor value that ensures VOL ≤ 0.4V at ISINK = 100µA while maintaining adequate rise time for the target logic family.
Can the MAX6377XR27-T operate reliably below 1.2V VCC?
No-the absolute minimum VCC for functional operation of the MAX6377XR27-T is 1.2V, as specified in the Absolute Maximum Ratings and Electrical Characteristics tables. While the device guarantees correct output logic state down to 1V VCC, it is not characterized or guaranteed to function correctly (e.g., maintain threshold accuracy or propagation delay) below 1.2V.
What is the maximum transient duration the MAX6377XR27-T can ignore at 100mV overdrive?
At a threshold overdrive of 100mV (i.e., VCC = VTH – 100mV), the MAX6377XR27-T can ignore negative-going transients up to 20µs in duration, as shown in Figure MAX6375-04 ("Maximum Transient Duration vs. Threshold Overdrive") of the datasheet. This immunity prevents false resets during brief supply dips.
Is the SC70-3 package of the MAX6377XR27-T lead-free compliant?
Yes-the MAX6377XR27-T is available in both leaded and lead-free packaging. To order the lead-free version, replace the "-T" suffix with "+T" per Maxim's ordering instructions. The SC70-3 package dimensions and thermal characteristics remain identical between versions, and lead-free assembly follows JEDEC J-STD-020 reflow profiles.
MAX6377XR27-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Voltage Detector
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.7V
- 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:
- SC-70-3
MAX6377XR27-T FAQ
1.How can I place an order for MAX6377XR27-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6377XR27-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 MAX6377XR27-T reliable?
The price and inventory of MAX6377XR27-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6377XR27-T is usually 5 days.
3.What payment methods are accepted for MAX6377XR27-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6377XR27-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6377XR27-T?
MAX6377XR27-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6377XR27-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 MAX6377XR27-T?
For technical support, including MAX6377XR27-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6377XR27-T requirements.
6.How does Aetrix verify that MAX6377XR27-T is sourced from the original manufacturer or authorized distributors?
All MAX6377XR27-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 MAX6377XR27-T meets industry standards.
7.What is the process for return or replacement of MAX6377XR27-T?
All MAX6377XR27-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6377XR27-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 MAX6377XR27-T part is unused and in its original packaging.
Return procedure for MAX6377XR27-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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