My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6463UR42+T
- Part No.:
- MAX6463UR42+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6463UR42+T.pdf
- Description:
- IC VOLT DETECTOR LP SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,959
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6463UR42+T from Maxim Integrated is a precision ultra-low-power voltage detector IC designed for battery and power-supply monitoring in space-constrained portable systems. It features a factory-set 4.2V lower trip threshold (VTH−), 4.41V upper trip threshold (VTH+), 1.0µA supply current at 3.6V, 17µs propagation delay, and ±2.5% threshold accuracy over −40°C to +125°C - used to assert an active-low open-drain reset signal during brownout conditions in Li-ion-powered devices.
For engineers reviewing the MAX6463UR42+T datasheet, MAX6463UR42+T pinout, MAX6463UR42+T application, or MAX6463UR42+T equivalent, key selection considerations include its open-drain output architecture, 4.2V detection point for 4.2V Li-ion cell end-of-charge monitoring, guaranteed hysteresis (5%), and SOT23-3 package compatibility with high-density PCB layouts.
Technical Context
The MAX6463UR42+T implements a precision bandgap reference and comparator-based detection circuit with internally trimmed resistor networks to set VTH− = 4.200V (±2.5%) and VTH+ = 4.410V (5% hysteresis). Its open-drain output requires an external pullup and sinks current when VCC falls below VTH−, remaining asserted until VCC rises above VTH+.
No external components are needed for basic operation. Immunity to short transients is achieved via internal timing control, and the device remains functional down to VCC = 1.2V while consuming only 1.0µA typical supply current at 3.6V across the full industrial temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 1.0µA typical at 3.6V - enables multi-year battery life in always-on monitoring applications |
| Lower Threshold (VTH−) | 4.200V ±2.5% (−40°C to +125°C) - precisely matches nominal 4.2V Li-ion cell full-charge voltage |
| Upper Threshold (VTH+) | 4.410V (VTH− × 1.05) - provides 5% hysteresis to prevent output chatter near trip point |
| Propagation Delay | 17µs (VCC falling at 10mV/µs) - ensures fast response to supply collapse without false triggering |
| Output Type | Active-low open-drain - allows level-shifting to logic supplies up to 6V using external pullup |
| Operating Voltage Range | 1.2V to 6.0V - supports operation even during deep discharge or post-reset startup |
| Temperature Range | −40°C to +125°C - qualified for automotive cabin, industrial, and medical portable environments |
Pinout & Package
SOT23-3 package (3-pin, 1.3mm × 2.9mm footprint), lead-free, RoHS-compliant, tape-and-reel delivery.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 OUT | Open-drain output | Asserts low when VCC < VTH−; requires external pullup resistor; compatible with 0–6V logic domains |
| 2 GND | Ground reference | Primary return path for internal circuitry and output sink current; must be connected to system ground |
| 3 VCC | Supply and monitored input | Single pin serves as both power source and voltage sense node; monitors itself directly |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 1.0µA max at 3.6V - reduces standby power loss by >90% vs. comparable supervisory ICs |
| Factory-trimmed threshold | 4.200V ±2.5% over full temperature range - eliminates need for external calibration or trimming |
| Internal 5% hysteresis | VTH+ = VTH− × 1.05 - prevents oscillation during slow-rising/falling supply transitions |
| No external components required | Self-contained detection circuit - reduces BOM count, board area, and design validation effort |
| Transient immunity | Immune to sub-20µs voltage glitches at ≥100mV overdrive - improves reliability in noisy power environments |
Applications
| Li-ion Battery End-of-Charge Monitoring | Low-Power Microcontroller Reset Supervision |
|---|---|
Use Scenario: Monitoring single-cell Li-ion battery voltage during charging termination and post-charge hold. IC Role / Device Role: Voltage detector asserting reset when cell voltage drops below 4.2V after full charge, preventing over-discharge. Use Value: Enables precise 4.2V cutoff without external resistors or ADC polling, extending battery cycle life. |
Use Scenario: Providing reliable power-on and brownout reset to an ultra-low-power MCU in a wearable sensor node. IC Role / Device Role: Open-drain reset generator with 4.2V threshold and 5% hysteresis, interfacing to 3.3V MCU reset pin. Use Value: Guarantees clean reset assertion during Li-ion battery sag, eliminating software lockups due to marginal VDD. |
| Portable Medical Device Power Sequencing | Noise-Immune Load Switch Control |
Use Scenario: Enabling power to analog front-end circuitry only when main 4.2V rail is stable in a handheld glucose meter. IC Role / Device Role: Detection signal conditioning element driving gate of external load switch MOSFET. Use Value: Prevents analog circuit activation during battery insertion or transient dips, ensuring measurement integrity. |
Use Scenario: Controlling enable input of a DC-DC converter in a noise-prone motor drive subsystem. IC Role / Device Role: Glitch-immune voltage monitor providing robust enable/disable decision under EMI stress. Use Value: Eliminates spurious converter toggling caused by µs-scale supply noise, improving system EMC performance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EB42DBZR | 4.2V threshold, push-pull active-low output, 0.5µA ICC, SOT23-3 | Lacks open-drain flexibility; fixed push-pull limits logic-level translation capability | Prefer MAX6463UR42+T when interfacing to mixed-voltage systems requiring external pullup |
| APX803S-42SA-7 | 4.2V threshold, open-drain active-low, 1.2µA ICC, SOT23-3, ±2.0% accuracy | Tighter threshold tolerance but higher supply current and narrower temp range (−40°C to +85°C) | Prefer MAX6463UR42+T for extended temperature operation and lower ICC in battery-critical designs |
Compared with TLV803EB42DBZR and APX803S-42SA-7, the MAX6463UR42+T uniquely combines open-drain output, 1.0µA supply current, ±2.5% accuracy over −40°C to +125°C, and factory-set 4.2V threshold - making it optimal for long-life, wide-temp, level-shifted reset applications in portable electronics.
Availability
MAX6463UR42+T is available at Aetrix Electronics and suitable for Li-ion battery monitoring, microcontroller reset supervision, and portable medical device power sequencing requiring stable component supply and long-term lifecycle support.
Supply support for MAX6463UR42+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, automotive, and communications markets.
The MAX6461–MAX6466 family was designed specifically for ultra-low-power voltage monitoring in battery-operated equipment - delivering precision thresholds, minimal current draw, and robust transient immunity in miniature packages.
FAQ
What is the exact voltage threshold of the MAX6463UR42+T?
The MAX6463UR42+T has a factory-set lower trip threshold (VTH−) of 4.200V ±2.5% over −40°C to +125°C, and an upper trip threshold (VTH+) of 4.410V (5% hysteresis). These values are confirmed in Table 1a and 1b of the official datasheet and apply directly to the MAX6463UR42+T variant.
Does the MAX6463UR42+T require external components to operate?
No, the MAX6463UR42+T operates autonomously with no external components required for basic voltage detection. However, because it uses an open-drain output, an external pullup resistor is mandatory to establish a defined logic-high state when the output is not asserted - typically connected between OUT and the target logic supply (e.g., 1.8V, 3.3V, or 5V).
What package type and pin count does the MAX6463UR42+T use?
The MAX6463UR42+T is supplied in a 3-pin SOT23-3 package (1.3mm × 2.9mm footprint), with pin 1 = OUT, pin 2 = GND, and pin 3 = VCC. This matches the ordering code "UR" suffix and is distinct from SC70-3 ("XR") and SOT23-5 ("UK") variants in the same family.
How does the MAX6463UR42+T handle short voltage transients?
The MAX6463UR42+T is immune to short-duration falling VCC transients - for example, a 100mV overdrive (i.e., VCC dropping 100mV below VTH−) can last up to ~15µs without causing output assertion, as shown in Figure 4 of the datasheet. This prevents false resets during switching noise or load dumps.
Is the MAX6463UR42+T suitable for automotive applications?
Yes, the MAX6463UR42+T is specified from −40°C to +125°C and qualified for operation in automotive cabin environments. Its 4.2V threshold aligns with common Li-ion battery monitoring needs in telematics, ADAS sensors, and infotainment accessories - though system-level AEC-Q100 qualification must be verified per application.
MAX6463UR42+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:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.2V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 14µs Typical Propagation Delay
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
MAX6463UR42+T FAQ
1.How can I place an order for MAX6463UR42+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6463UR42+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 MAX6463UR42+T reliable?
The price and inventory of MAX6463UR42+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6463UR42+T is usually 5 days.
3.What payment methods are accepted for MAX6463UR42+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6463UR42+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6463UR42+T?
MAX6463UR42+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6463UR42+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 MAX6463UR42+T?
For technical support, including MAX6463UR42+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6463UR42+T requirements.
6.How does Aetrix verify that MAX6463UR42+T is sourced from the original manufacturer or authorized distributors?
All MAX6463UR42+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 MAX6463UR42+T meets industry standards.
7.What is the process for return or replacement of MAX6463UR42+T?
All MAX6463UR42+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6463UR42+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 MAX6463UR42+T part is unused and in its original packaging.
Return procedure for MAX6463UR42+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6463UR42+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…
