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Analog Devices Inc./Maxim Integrated MAX6465XR46+T
- Part No.:
- MAX6465XR46+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6465XR46+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,114
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Product details
Overview
MAX6465XR46+T from Maxim Integrated is a micropower supervisory circuit with active-high push-pull output, 4.6V lower trip threshold (VTH− = 4.600V typ), 150ms minimum reset timeout, ±2.5% threshold accuracy over −40°C to +125°C, and 1.0µA supply current at 3.6V - used for reliable power-on reset assertion in battery-powered medical monitors and portable instrumentation.
For engineers reviewing the MAX6465XR46+T datasheet, MAX6465XR46+T pinout, MAX6465XR46+T application, or MAX6465XR46+T equivalent, key selection criteria include guaranteed 150ms reset pulse width, factory-trimmed 4.6V detection point, SC70-3 package footprint compatibility, and immunity to sub-20µs VCC transients.
Technical Context
The MAX6465XR46+T implements a precision bandgap reference and comparator with internally trimmed resistor networks to set VTH− = 4.6V and VTH+ = 4.83V (5% hysteresis). It asserts its active-high push-pull output when VCC falls below VTH− and holds it asserted for ≥150ms after VCC rises above VTH+.
This device operates across the full industrial temperature range (−40°C to +125°C) with no external components required. Its 1.0µA quiescent current and 17µs propagation delay (falling edge) support ultra-low-power system monitoring without compromising reset timing integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold (VTH−) | 4.600V typical at +25°C; factory-trimmed, ±2.5% over −40°C to +125°C - ensures consistent brownout detection across operating conditions |
| Reset Timeout Period | 150ms minimum - guarantees sufficient hold time for microcontroller initialization before release |
| Supply Current (ICC) | 1.0µA at 3.6V, −40°C to +125°C - enables multi-year operation on coin-cell batteries |
| Propagation Delay | 17µs (VCC falling), 100µs (VCC rising) - provides fast fault response while avoiding false triggers on slow ramps |
| Output Type | Active-high push-pull - drives logic inputs directly without pull-up resistors or level-shifting |
| Hysteresis | 5% (VTH+ = VTH− × 1.05) - prevents output chatter during noisy or slowly recovering supply conditions |
| Operating Voltage Range | 1.2V to 6.0V - supports monitoring of Li+ cells, 3.3V/5V rails, and post-regulator supplies |
Pinout & Package
MAX6465XR46+T is housed in a 3-pin SC70-3 package (2.0mm × 2.1mm, 0.5mm pitch), optimized for space-constrained portable designs. Pin 1 is OUT, Pin 2 is GND, Pin 3 is VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Active-high push-pull output | Drives CMOS/TTL inputs directly; sinks up to 9mA at VCC ≥ 4.5V; VOH ≥ 0.8×VCC when not asserted |
| 2 (GND) | Ground reference | Return path for internal bandgap and comparator; must be low-impedance connection to system ground plane |
| 3 (VCC) | Supply and monitored voltage input | Single pin serves dual role: powers device and provides monitored rail; accepts 1.2V–6.0V with no external decoupling required |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low ICC | 1.0µA at 3.6V enables >10-year battery life in always-on medical sensors |
| Factory-set 4.6V threshold | Eliminates external resistor network and calibration effort for 5V system supervision |
| 150ms minimum timeout | Meets JEDEC JESD85 requirements for microcontroller reset assertion duration |
| 5% internal hysteresis | Prevents oscillation during marginal supply recovery without external components |
| SC70-3 footprint | Matches legacy SOT23-3 layouts with 30% smaller area; compatible with standard pick-and-place equipment |
Applications
| Portable Medical Monitors | Battery-Powered Data Loggers |
|---|---|
Use Scenario: Continuous ECG/SpO₂ monitoring powered by CR2032 coin cell with 3.3V LDO output. IC Role / Device Role / Timing Role: Supervises 3.3V rail and asserts active-high RESET to MSP430F5xx MCU until stable power is confirmed. Use Value: 1.0µA ICC extends battery life beyond 3 years; 150ms timeout ensures full MCU boot sequence completes before release. |
Use Scenario: Environmental sensor node logging temperature/humidity every 5 minutes using AA alkaline cells. IC Role / Device Role / Timing Role: Detects brownout on 3.0V regulated rail and forces hard reset to prevent flash corruption during low-battery shutdown. Use Value: ±2.5% threshold accuracy maintains consistent cutoff across temperature; 5% hysteresis avoids repeated resets during gradual discharge. |
| Industrial Handheld Scanners | Wireless Sensor Transmitters |
Use Scenario: Rugged barcode scanner with Li-ion pack and 5.0V buck converter powering ARM Cortex-M0+ SoC. IC Role / Device Role / Timing Role: Monitors 5.0V main rail and generates clean, glitch-immune reset pulse on power-up and brownout events. Use Value: Immunity to <20µs transients prevents spurious resets during motor commutation noise; push-pull output eliminates pull-up resistor count. |
Use Scenario: LoRaWAN node powered by solar-charged LiFePO₄ cell, operating intermittently with 3.3V boost regulator. IC Role / Device Role / Timing Role: Supervises 3.3V output of boost IC and holds nRESET low until regulated rail stabilizes post-wake-up. Use Value: 17µs falling-edge delay enables rapid fault detection; SC70-3 package saves PCB area critical for compact RF modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar µP supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6465UR46+T | SOT23-3 package (same pinout, 2.92mm × 1.3mm vs SC70-3's 2.0mm × 2.1mm); identical electrical specs | Preferred where board real estate allows larger footprint but thermal mass improves reliability in high-vibration environments | Select MAX6465UR46+T if existing layout uses SOT23-3 land pattern or requires higher power dissipation margin (320mW vs 228.6mW) |
| TPS3808G33DBVR | 3.3V fixed threshold, 200ms timeout, 2.5µA ICC, SOT23-6 package; no factory-programmable variants | Only suitable for 3.3V systems; lacks 4.6V threshold option and SC70-3 size | Choose TPS3808G33DBVR only if redesigning for 3.3V rail and requiring TI's long-term availability commitment |
Compared with MAX6465XR46+T, the MAX6465UR46+T offers identical functionality in a mechanically distinct but pin-compatible SOT23-3 package, while the TPS3808G33DBVR provides longer timeout and TI supply chain assurance but lacks the precise 4.6V threshold and ultra-low 1.0µA current draw.
Availability
MAX6465XR46+T is available at Aetrix Electronics and suitable for portable medical devices, battery-powered data loggers, and industrial handheld scanners requiring stable component supply with guaranteed long-term manufacturability.
Supply support for MAX6465XR46+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 management, sensing, and interface applications, with emphasis on high-reliability, low-power solutions.
The MAX6461–MAX6466 family was engineered specifically for ultra-low-power supervisory functions in space- and energy-constrained systems - delivering factory-trimmed thresholds, integrated hysteresis, and minimal external component count.
FAQ
What is the exact reset threshold voltage of the MAX6465XR46+T?
The MAX6465XR46+T has a factory-trimmed lower trip threshold (VTH−) of 4.600V typical at +25°C, with guaranteed range of 4.485V to 4.715V over −40°C to +125°C. Its upper threshold (VTH+) is 4.830V typical, providing 5% hysteresis. These values are confirmed in Table 1a and Table 1b of the official datasheet.
Does the MAX6465XR46+T require external components to operate?
No, the MAX6465XR46+T requires no external components. Its precision bandgap reference, comparator, trimmed resistor network, and hysteresis circuit are fully integrated. Only VCC, GND, and the load connected to the active-high push-pull OUT pin are needed - eliminating BOM cost and layout complexity.
What is the minimum reset timeout period specified for the MAX6465XR46+T?
The MAX6465XR46+T guarantees a minimum reset timeout period of 150ms, measured from the moment VCC rises above VTH+ until the active-high output de-asserts. This value is tested and specified across −40°C to +125°C and ensures robust microcontroller initialization in all operating conditions.
Can the MAX6465XR46+T be used with a 3.3V supply rail?
Yes, the MAX6465XR46+T operates from 1.2V to 6.0V and can monitor any supply within that range - including 3.3V rails. However, its 4.6V threshold means it will assert reset only when a 3.3V rail drops below 4.6V, which is impossible. It is intended for 5V or higher nominal rails, such as Li+ battery packs or 5.0V regulators.
How does the MAX6465XR46+T handle short voltage transients on the VCC line?
The MAX6465XR46+T is immune to short-duration VCC transients: it ignores falling glitches ≤20µs wide when VCC overdrive is ≥100mV below VTH−, as shown in Figure 4 of the datasheet. This prevents false resets during switching noise or load-dump events without requiring additional filtering.
MAX6465XR46+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:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.6V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 150ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
MAX6465XR46+T FAQ
1.How can I place an order for MAX6465XR46+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6465XR46+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 MAX6465XR46+T reliable?
The price and inventory of MAX6465XR46+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6465XR46+T is usually 5 days.
3.What payment methods are accepted for MAX6465XR46+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6465XR46+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6465XR46+T?
MAX6465XR46+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6465XR46+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 MAX6465XR46+T?
For technical support, including MAX6465XR46+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6465XR46+T requirements.
6.How does Aetrix verify that MAX6465XR46+T is sourced from the original manufacturer or authorized distributors?
All MAX6465XR46+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 MAX6465XR46+T meets industry standards.
7.What is the process for return or replacement of MAX6465XR46+T?
All MAX6465XR46+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6465XR46+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 MAX6465XR46+T part is unused and in its original packaging.
Return procedure for MAX6465XR46+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6465XR46+T Tags
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MIC826SYMT-TR
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APX803S-31SA-7
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APX803L20-29SA-7
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