My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6377XR27+
- Part No.:
- MAX6377XR27+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6377XR27+.pdf
- Description:
- MAX6377 3-PIN, ULTRA-LOW-POWER V
- Quantity:
- Payment:
- Shipping:
Inventory:729
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6377XR27+ 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 temperature, 500nA supply current, and operation down to 1V VCC. It monitors system supply voltage in portable battery-powered equipment and asserts OUT low when VCC falls below the threshold.
For engineers reviewing the MAX6377XR27+ datasheet, MAX6377XR27+ pinout, MAX6377XR27+ application, or MAX6377XR27+ equivalent, this device is selected for precision reset supervision in space-constrained, low-quiescent-current designs requiring guaranteed logic state down to 1V and immunity to fast VCC transients.
Technical Context
The MAX6377XR27+ 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 current only when asserted (VCC < VTH), enabling flexible logic-level interfacing up to 5.5V.
It features built-in transient immunity: negative-going VCC glitches shorter than ~100µs (at 70mV overdrive) are rejected. The device guarantees correct output state across -40°C to +85°C and maintains ±2.5% threshold accuracy without external calibration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Threshold Voltage | 2.700V ±2.5% over -40°C to +85°C - ensures reliable reset assertion across industrial temperature range without derating. |
| Supply Current | 500nA typical at +25°C - enables multi-year battery life in coin-cell–powered devices like wearables and IoT sensors. |
| Output Type | Active-low, open-drain - allows wired-OR configuration and level-shifting via external pull-up to any voltage ≤5.5V. |
| VCC Operating Range | 1.2V to 5.5V - supports supervision of Li+ battery (3.0–4.2V), 3.3V/2.5V logic rails, and brown-out detection down to 1.2V. |
| Propagation Delay | 6.3µs typical (falling edge) - provides fast response to undervoltage events while rejecting sub-microsecond noise. |
| Threshold Hysteresis | 100mV - prevents output chatter during slow VCC recovery near trip point. |
| Tempco | 40ppm/°C - contributes to tight overall temperature drift, supporting stable performance in thermally varying environments. |
Pinout & Package
MAX6377XR27+ is housed in a 3-pin SC70 package (JEDEC MO-203AA), footprint-compatible with SOT23-3 but 30% smaller. Pin 1 = GND, Pin 2 = OUT, Pin 3 = VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground reference | Return path for internal bandgap and comparator; must be low-impedance to ensure threshold stability. |
| 2 (OUT) | Active-low open-drain output | Sinks current when VCC < VTH; requires external pull-up resistor to define high-state voltage and logic level. |
| 3 (VCC) | Supply input | Powers internal circuitry; monitored voltage rail; operates from 1.2V to 5.5V with guaranteed output state down to 1V. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low 500nA supply current | Extends battery service life in always-on monitoring applications such as smart meters and medical patches. |
| ±2.5% threshold accuracy over temperature | Eliminates need for system-level calibration or margining, reducing BOM count and firmware complexity. |
| Open-drain output with 5.5V-tolerant sink | Enables direct interface to 1.8V, 3.3V, or 5V microcontrollers without level translators. |
| 100mV internal hysteresis | Prevents oscillation during slow-rising power rails or noisy supply conditions without external components. |
| Immunity to VCC transients ≤100µs | Rejects switching noise from DC/DC converters and digital load transients, improving system robustness. |
Applications
| Wearable Health Monitor | Industrial Sensor Node |
|---|---|
|
Use Scenario: Coin-cell–powered ECG patch continuously monitors battery voltage and triggers MCU reset before deep discharge. IC Role / Device Role / Timing Role: Voltage supervisor asserting active-low reset signal to microcontroller upon battery sag below 2.7V. Use Value: 500nA quiescent current extends usable battery life beyond 2 years; ±2.5% threshold ensures consistent low-battery detection across operating temperature. |
Use Scenario: Wireless temperature sensor node powered by primary lithium battery in remote pipeline monitoring. IC Role / Device Role / Timing Role: Brown-out detector holding system in reset until regulated 3.3V rail stabilizes after cold start. Use Value: Guaranteed operation down to 1V VCC enables reliable reset assertion even during battery aging or low-temperature discharge. |
| Smart Home Door Lock | Portable Diagnostic Tool |
|
Use Scenario: Battery-backed electronic lock uses 2.7V threshold to detect alkaline cell depletion and initiate low-power alert mode. IC Role / Device Role / Timing Role: Supervisory IC driving open-drain interrupt line to ARM Cortex-M0+ to trigger battery warning routine. Use Value: Open-drain output allows shared interrupt bus with other peripherals; 100mV hysteresis prevents false alerts during motor-induced supply dips. |
Use Scenario: Handheld medical analyzer with dual Li-ion cells uses MAX6377XR27+ to supervise 3.3V system rail generated by buck converter. IC Role / Device Role / Timing Role: Precision voltage detector providing clean, glitch-free reset pulse to FPGA configuration logic. Use Value: 6.3µs propagation delay ensures timely reset assertion; transient immunity rejects converter switching noise without RC filtering. |
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 IQ, SOT23-3, push-pull active-low output | Push-pull eliminates need for external pull-up; lower IQ but no open-drain flexibility | Select when board layout lacks space for pull-up resistor and interfacing to mixed-voltage logic is not required. |
| APX803S-27SA-7 | 2.7V threshold, 600nA IQ, SOT23-3, open-drain active-low; ±2.0% initial accuracy | Higher initial accuracy but wider tempco (60ppm/°C); same SC70/SOT23 footprint compatibility | Select when tighter room-temperature tolerance is prioritized over long-term thermal stability. |
Compared with TLV803EB27DBZR and APX803S-27SA-7, the MAX6377XR27+ offers superior temperature stability (40ppm/°C vs. ≥60ppm/°C) and guaranteed 1V operation-critical for battery end-of-life detection-while retaining open-drain versatility for multi-rail systems.
Availability
MAX6377XR27+ is available at Aetrix Electronics and suitable for portable medical devices, industrial wireless sensors, and smart home security systems requiring stable component supply, lead-free compliance, and tape-and-reel delivery for automated assembly.
Supply support for MAX6377XR27+ 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 connectivity in demanding industrial, automotive, and medical applications.
The MAX6375–MAX6380 family was engineered specifically for ultra-low-power voltage supervision in battery-critical systems, delivering factory-trimmed thresholds, nanoscale quiescent current, and robust transient rejection in minimal 3-pin packages.
FAQ
What is the exact factory-trimmed threshold voltage of the MAX6377XR27+?
The MAX6377XR27+ has a nominal threshold voltage of 2.700V, with guaranteed limits of 2.633V (min) and 2.768V (max) across the full -40°C to +85°C operating temperature range, per Table 1 in the datasheet. This 2.7V setting targets applications supervising 3.0V nominal rails with 10% headroom.
Does the MAX6377XR27+ require an external pull-up resistor on the OUT pin?
Yes, the MAX6377XR27+ features an open-drain output and requires an external pull-up resistor connected between OUT and a logic supply (up to 5.5V). The resistor value must be chosen to ensure VOL ≤0.4V at ISINK = 100µA while meeting rise-time requirements of the driven load.
Can the MAX6377XR27+ operate reliably at VCC = 1.2V?
Yes, the MAX6377XR27+ is fully specified to maintain correct output logic state (active-low when VCC < VTH) down to VCC = 1.0V. At 1.2V, it delivers full functionality including 500nA supply current and valid output drive, making it suitable for end-of-life battery detection.
What is the maximum allowable negative-going VCC transient duration the MAX6377XR27+ can reject?
At a 70mV threshold overdrive (i.e., VCC = VTH − 70mV = 2.63V), the MAX6377XR27+ rejects transients up to approximately 100µs, as shown in Figure 4 of the datasheet. Shorter transients are ignored; longer ones will assert the output, ensuring immunity to typical DC/DC switching noise.
Is the MAX6377XR27+ pin-compatible with other devices in the MAX6375–MAX6380 family?
Yes, all MAX6375–MAX6380 variants-including MAX6377XR27+-share identical 3-pin SC70 and SOT23-3 footprints and pinouts (GND, OUT, VCC). Threshold, output type (open-drain vs. push-pull), and tempco are the only functional differences between family members.
MAX6377XR27+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Bulk
- Product Status:
- Active
- 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+ FAQ
1.How can I place an order for MAX6377XR27+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6377XR27+ 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+ reliable?
The price and inventory of MAX6377XR27+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6377XR27+ is usually 5 days.
3.What payment methods are accepted for MAX6377XR27+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6377XR27+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6377XR27+?
MAX6377XR27+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6377XR27+ 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+?
For technical support, including MAX6377XR27+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6377XR27+ requirements.
6.How does Aetrix verify that MAX6377XR27+ is sourced from the original manufacturer or authorized distributors?
All MAX6377XR27+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX6377XR27+?
All MAX6377XR27+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6377XR27+, 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+ part is unused and in its original packaging.
Return procedure for MAX6377XR27+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6377XR27+ 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…
