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Analog Devices Inc./Maxim Integrated MAX6464UK26+T
- Part No.:
- MAX6464UK26+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6464UK26+T.pdf
- Description:
- IC VOLT DETECTOR LP SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,739
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Product details
Overview
MAX6464UK26+T from Maxim Integrated is a micropower supervisory circuit with 2.6V lower trip threshold (VTH−), 150ms minimum reset timeout, push-pull active-low output, and ultra-low 1.0µA supply current at 3.6V - used for reliable power-on reset generation in battery-powered medical devices and portable instrumentation.
For engineers reviewing the MAX6464UK26+T datasheet, MAX6464UK26+T pinout, MAX6464UK26+T application, or MAX6464UK26+T equivalent, key selection criteria include guaranteed 150ms reset assertion after VCC recovery, ±2.5% threshold accuracy over −40°C to +125°C, internal 5% hysteresis, immunity to short voltage transients, and SOT23-5 lead-free packaging compatibility.
Technical Context
The MAX6464UK26+T implements a precision bandgap reference and comparator with factory-trimmed resistor networks to set VTH− = 2.600V (±2.5%) and VTH+ = 2.730V (VTH− × 1.05). Its internal hysteresis prevents output chatter during slow-rising/falling supply transitions near threshold.
This device asserts reset when VCC falls below VTH− and holds reset active for ≥150ms after VCC rises above VTH+, independent of subsequent VCC stability - a timing-critical behavior verified across −40°C to +125°C with no external components required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +1.2V to +6.0V - supports direct monitoring of Li+ battery (3.0–4.2V), 3.3V logic rails, and 5V systems without level shifting. |
| Lower Threshold (VTH−) | 2.600V (±2.5%) - factory-set trip point ensures accurate brownout detection at nominal 2.6V system rails. |
| Reset Timeout Period | 150ms (min) - guarantees sufficient processor initialization time before release, eliminating need for external RC timing. |
| Supply Current (ICC) | 1.0µA (typ @ 3.6V, +25°C) - enables multi-year operation on coin-cell batteries in always-on monitoring applications. |
| Threshold Hysteresis | 5% (VTH+ = VTH− × 1.05) - prevents false resets during noisy or slowly recovering power rails. |
| Operating Temperature | −40°C to +125°C - fully specified for automotive under-hood, industrial control, and portable medical environments. |
| Output Type | Push-pull, active-low - drives CMOS/TTL inputs directly; sinks up to 9mA at VCC ≥ 4.5V with VOL ≤ 0.4V. |
Pinout & Package
SOT23-5 package (5-pin, 2.9mm × 1.6mm × 1.1mm body, 0.95mm pitch), lead-free, RoHS-compliant, tape-and-reel delivery.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Reset Output | Active-low push-pull output; asserted low during VCC < VTH− and held low ≥150ms after VCC > VTH+. |
| 2 - GND | Ground Reference | Primary ground connection; both GND pins (2 and 3) must be connected in SOT23-5 for proper thermal and electrical performance. |
| 3 - GND | Ground Reference | Secondary ground terminal; electrically tied internally to Pin 2 - required for low-impedance return path in high-noise environments. |
| 4 - N.C. | No Connection | Internally unconnected; must remain floating - no routing or soldering allowed. |
| 5 - VCC | Supply & Monitor Input | Single pin serves as both power supply and monitored voltage source; accepts 1.2V–6.0V with 1.0µA quiescent draw. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low ICC | 1.0µA typical at 3.6V - extends battery life in wearable sensors and implantable diagnostics by minimizing standby drain. |
| Factory-trimmed VTH− | 2.600V ±2.5% over full temperature range - eliminates calibration overhead and reduces BOM count vs. discrete resistor-divider solutions. |
| Guaranteed 150ms reset pulse | Minimum timeout period independent of VCC slew rate - ensures microcontroller core and peripherals fully initialize before release. |
| Internal 5% hysteresis | VTH+ = VTH− × 1.05 - suppresses multiple reset toggles during marginal power-up/down sequences in noisy industrial settings. |
| Transient immunity | Immune to sub-20µs falling glitches down to 100mV overdrive - prevents spurious resets from ESD or switching noise in DC/DC converter outputs. |
Applications
| Portable Medical Sensors | Battery-Powered Data Loggers |
|---|---|
Use Scenario: Continuous glucose monitor (CGM) with coin-cell battery and low-power MCU requiring deterministic reset after battery insertion or voltage sag. IC Role / Device Role / Timing Role: Supervisory circuit generating clean, 150ms-minimum active-low reset pulse synchronized to VCC recovery above 2.6V. Use Value: Eliminates risk of MCU executing invalid code due to premature release; 1.0µA ICC extends 3V CR2032 battery life beyond 5 years in sleep mode. |
Use Scenario: Environmental data logger deployed in remote locations, powered by solar-charged Li-ion, subject to intermittent cloud cover-induced voltage droop. IC Role / Device Role / Timing Role: Voltage supervisor asserting reset during VCC drop below 2.6V and holding reset ≥150ms post-recovery to ensure ADC and flash memory re-initialization. Use Value: Prevents corrupted sensor readings or firmware corruption during unstable power conditions; ±2.5% threshold accuracy maintains trip consistency across −20°C to +60°C field temperatures. |
| Industrial Handheld Testers | Low-Power IoT Edge Nodes |
Use Scenario: Battery-operated multimeter with auto-ranging analog front-end and ARM Cortex-M0+ MCU requiring glitch-free power-on sequence. IC Role / Device Role / Timing Role: Reset generator with push-pull active-low output driving MCU nRST pin directly, immune to 10µs transients on 3.3V rail. Use Value: Removes need for external RC filter or Schmitt-trigger buffer; 5% hysteresis avoids oscillation during slow battery discharge near 2.6V cutoff. |
Use Scenario: LoRaWAN node powered by primary alkaline AA cells, waking every 15 minutes to sample temperature/humidity and transmit via sub-GHz radio. IC Role / Device Role / Timing Role: Supervisory IC monitoring main 3.0V supply and asserting reset if voltage dips below 2.6V during radio transmit burst. Use Value: Ensures consistent boot state after brownout events; SOT23-5 footprint enables compact PCB layout alongside RF module and sensor array. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar µP supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3808G125DBVR | 2.5V threshold, 200ms timeout, 1.8µA ICC, SOT23-5 | Higher supply current; tighter 1.5% threshold accuracy but no hysteresis spec | Select when higher accuracy outweighs 0.8µA extra ICC and hysteresis is managed externally. |
| ADM6315-26ARTZ-RL | 2.63V threshold, 200ms timeout, 1.2µA ICC, SOT23-5 | Wider temp range (−40°C to +125°C), but only ±3.5% threshold accuracy and no hysteresis guarantee | Choose for cost-sensitive designs where 2.63V vs. 2.60V trip point and reduced hysteresis margin are acceptable. |
Compared with TPS3808G125DBVR and ADM6315-26ARTZ-RL, MAX6464UK26+T delivers the lowest ICC (1.0µA), tightest hysteresis control (5% fixed), and best balance of threshold accuracy (±2.5%) and guaranteed timeout - making it optimal for ultra-long-life, noise-immune embedded reset functions.
Availability
MAX6464UK26+T is available at Aetrix Electronics and suitable for portable medical devices, battery-powered data loggers, and industrial handheld testers requiring stable component supply with guaranteed long-term availability and lead-free compliance.
Supply support for MAX6464UK26+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 interface applications in demanding environments.
The MAX6461–MAX6466 family was engineered specifically for ultra-low-power, high-accuracy voltage supervision in space-constrained, battery-dependent systems - prioritizing minimal ICC, factory-trimmed thresholds, and robust transient immunity without external components.
FAQ
What is the exact lower threshold voltage (VTH−) of the MAX6464UK26+T?
The MAX6464UK26+T has a factory-set lower threshold voltage VTH− of 2.600V, with guaranteed tolerance of ±2.5% over the full operating temperature range (−40°C to +125°C). This value is confirmed in Table 1a of the official datasheet, where suffix "26" corresponds to 2.600V nominal, and electrical characteristics specify min/max bounds of 2.535V to 2.665V at temperature extremes.
Does the MAX6464UK26+T require external components to function?
No, the MAX6464UK26+T operates autonomously with no external components required. Its precision bandgap reference, comparator, trimmed resistor network, and internal hysteresis are fully integrated. The only mandatory connections are VCC (Pin 5), GND (Pins 2 and 3), and OUT (Pin 1) - eliminating BOM cost, board area, and calibration effort compared to discrete supervisor solutions.
What is the reset timeout behavior of the MAX6464UK26+T during power recovery?
When VCC rises above VTH+ (2.730V), the MAX6464UK26+T holds its active-low reset output asserted for a minimum of 150ms before releasing it - regardless of whether VCC remains stable or experiences further fluctuations. This guaranteed minimum timeout ensures complete microcontroller initialization and peripheral readiness before system execution resumes.
Can the MAX6464UK26+T be used with a 1.8V supply rail?
Yes, the MAX6464UK26+T supports VCC as low as +1.2V per Absolute Maximum Ratings and Electrical Characteristics tables. At 1.8V supply, it maintains full functionality including 2.6V threshold monitoring, 150ms timeout, and push-pull output drive (VOH ≥ 0.8×VCC, VOL ≤ 0.3V), making it suitable for dual-supply systems where reset must be generated even during partial brownout conditions.
How does the MAX6464UK26+T handle short voltage transients on the VCC line?
The MAX6464UK26+T is designed to ignore short-duration falling transients: for example, a 100mV overdrive (i.e., VCC dropping to 2.500V) can last up to ~15µs without triggering reset, as shown in Figure 4 (MAX6461 toc04) of the datasheet. This immunity prevents false resets caused by switching noise, ESD coupling, or load-step artifacts in DC/DC converter outputs.
MAX6464UK26+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.6V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 150ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6464UK26+T FAQ
1.How can I place an order for MAX6464UK26+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6464UK26+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 MAX6464UK26+T reliable?
The price and inventory of MAX6464UK26+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6464UK26+T is usually 5 days.
3.What payment methods are accepted for MAX6464UK26+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6464UK26+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6464UK26+T?
MAX6464UK26+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6464UK26+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 MAX6464UK26+T?
For technical support, including MAX6464UK26+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6464UK26+T requirements.
6.How does Aetrix verify that MAX6464UK26+T is sourced from the original manufacturer or authorized distributors?
All MAX6464UK26+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 MAX6464UK26+T meets industry standards.
7.What is the process for return or replacement of MAX6464UK26+T?
All MAX6464UK26+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6464UK26+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 MAX6464UK26+T part is unused and in its original packaging.
Return procedure for MAX6464UK26+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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