My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6464XR39+T
- Part No.:
- MAX6464XR39+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6464XR39+T.pdf
- Description:
- IC VOLT DETECTOR LP SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:32,500
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6464XR39+T from Maxim Integrated is a micropower supervisory circuit with active-low push-pull output, 3.9V lower trip threshold (VTH− = 3.842V typ), 150ms minimum reset timeout period, and ultra-low 1.0µA supply current at 3.6V - used for reliable power-on reset generation in battery-powered microcontroller systems.
For engineers reviewing the MAX6464XR39+T datasheet, MAX6464XR39+T pinout, MAX6464XR39+T application, or MAX6464XR39+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, SC70-3 package compatibility, and immunity to sub-20µs voltage transients.
Technical Context
The MAX6464XR39+T implements a precision bandgap reference and comparator with factory-trimmed resistor networks to set VTH− = 3.842V (±2.5%) and VTH+ = 4.014V (VTH− × 1.05). It asserts its active-low push-pull output when VCC falls below VTH− and holds it asserted for ≥150ms after VCC rises above VTH+.
This device operates across 1.2V to 6.0V supply range, consumes only 1.0µA typical ICC at 3.6V/25°C, and features internal hysteresis and transient immunity - eliminating external components while ensuring robust reset behavior in noisy, low-power embedded environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold (VTH−) | 3.842V typical at +25°C; ±2.5% over −40°C to +125°C - ensures accurate brownout detection for 3.3V/3.6V systems |
| Reset Timeout Period | 150ms minimum - guarantees sufficient processor initialization time after power recovery |
| Supply Current (ICC) | 1.0µA typical at 3.6V/25°C - enables multi-year operation on coin-cell batteries |
| Threshold Hysteresis | 5% (VTH+ = VTH− × 1.05) - prevents output chatter during slow-rising/falling supply conditions |
| Operating Temperature | −40°C to +125°C - supports automotive under-hood and industrial control applications |
| Output Type | Active-low push-pull - drives logic directly without external pullup; sinks 1mA at VOL ≤ 0.3V |
| Propagation Delay | Not specified for MAX6464 series - timeout-based reset assertion replaces propagation delay dependency |
Pinout & Package
MAX6464XR39+T is housed in a 3-pin SC70-3 package (2.0mm × 2.1mm × 0.95mm), optimized for space-constrained portable designs. Pin 1 is OUT, Pin 2 is GND, and Pin 3 is VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT (Pin 1) | Active-low push-pull reset output | Drives microcontroller RESET# input directly; sinks ≥1mA at VOL ≤ 0.3V; no external pullup required |
| GND (Pin 2) | Ground reference | Return path for internal bandgap and comparator; must be connected to system ground plane |
| VCC (Pin 3) | Supply and monitored voltage input | Accepts 1.2V–6.0V; simultaneously powers device and serves as monitored rail for 3.9V threshold detection |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 1.0µA typical at 3.6V - extends battery life in always-on monitoring applications |
| Factory-set 3.9V threshold | VTH− = 3.842V (±2.5%) - eliminates manual calibration and external resistor networks |
| Guaranteed 150ms reset timeout | Minimum tRP = 150ms - meets ARM Cortex-M and PIC microcontroller reset timing requirements |
| Internal 5% hysteresis | VTH+ = VTH− × 1.05 - prevents false resets during marginal supply conditions |
| Transient immunity | Immune to <20µs falling glitches at 100mV overdrive - suppresses noise-induced false resets |
Applications
| Battery-Powered Microcontroller Reset | Low-Voltage Brownout Protection |
|---|---|
Use Scenario: Monitoring 3.6V Li-ion battery voltage in a wireless sensor node to trigger controlled shutdown before deep discharge. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-low RESET# signal to halt MCU execution when VCC drops below 3.842V. Use Value: Prevents data corruption and flash memory write errors by guaranteeing clean reset before supply collapse. |
Use Scenario: Detecting undervoltage in a 3.3V FPGA configuration supply during cold temperature startup. IC Role / Device Role / Timing Role: Providing 150ms minimum reset pulse to hold FPGA in reset until stable 3.3V rail is confirmed. Use Value: Eliminates configuration failures caused by premature release of FPGA PROG_B or INIT_B signals. |
| Portable Medical Device Power Sequencing | Industrial IoT Edge Node Supervision |
Use Scenario: Enabling safe power-up sequence for an ECG front-end ASIC powered from a regulated 3.3V rail. IC Role / Device Role / Timing Role: Generating synchronized reset to analog signal chain and digital controller after VCC exceeds 3.842V and remains stable for ≥150ms. Use Value: Ensures analog biasing settles fully before ADC sampling begins, reducing offset drift in clinical measurements. |
Use Scenario: Supervising dual 3.3V/5.0V rails in a LoRaWAN gateway operating in uncontrolled ambient temperatures. IC Role / Device Role / Timing Role: Independent monitoring of 3.3V logic rail with −40°C to +125°C specification and 5% hysteresis. Use Value: Maintains deterministic reset behavior across wide thermal swings without recalibration or derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar µP supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3808G33DBVR | 3.3V fixed threshold; 200ms timeout; 2.5µA ICC; SOT23-5 package | Higher supply current; different threshold; requires PCB layout change due to 5-pin footprint | Select when 3.3V rail supervision is needed and board space allows SOT23-5 |
| ADM6315-39ARTZ-R7 | 3.9V threshold; 200ms timeout; 1.5µA ICC; SOT23-3 package; open-drain output | Open-drain output requires external pullup; slightly higher ICC; same footprint but different drive capability | Select when level-shifting or wired-OR reset bus is required |
Compared with MAX6464XR39+T, TPS3808G33DBVR offers longer timeout but higher current and incompatible pinout, while ADM6315-39ARTZ-R7 matches threshold and package but lacks push-pull drive - requiring redesign of reset load interface.
Availability
MAX6464XR39+T is available at Aetrix Electronics and suitable for battery-powered medical devices, industrial IoT edge nodes, and portable consumer electronics requiring stable component supply with long-term lifecycle support.
Supply support for MAX6464XR39+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 in demanding environments.
MAX6464XR39+T belongs to the MAX6461–MAX6466 supervisory family, engineered specifically for ultra-low-power, high-accuracy voltage monitoring in space- and energy-constrained embedded systems.
FAQ
What is the exact reset threshold voltage of MAX6464XR39+T?
The MAX6464XR39+T has a factory-trimmed lower trip threshold (VTH−) of 3.842V typical at +25°C, with ±2.5% tolerance over −40°C to +125°C. Its upper threshold (VTH+) is 4.014V (VTH− × 1.05), providing 5% hysteresis to prevent oscillation near the trip point. These values are confirmed in Table 1a and Table 1b of the official datasheet.
Does MAX6464XR39+T require external components for basic operation?
No, MAX6464XR39+T requires no external components for standard operation. Its precision bandgap reference, comparator, trimmed resistor network, and hysteresis circuit are fully integrated. The active-low push-pull output drives microcontroller RESET# inputs directly without pullup resistors - simplifying BOM and layout versus open-drain alternatives.
What is the minimum reset timeout period guaranteed for MAX6464XR39+T?
MAX6464XR39+T guarantees a minimum reset timeout period (tRP) of 150ms. This is the duration the active-low output remains asserted after VCC rises above VTH+, ensuring sufficient time for microcontroller core and peripherals to initialize. Typical timeout is 260ms, with maximum 430ms across temperature and voltage ranges.
Can MAX6464XR39+T operate from a 1.8V supply?
Yes, MAX6464XR39+T operates from VCC = 1.2V to 6.0V, so it functions reliably at 1.8V. However, its 3.9V threshold means it will assert reset continuously below that level - making it unsuitable for monitoring 1.8V rails. It is intended to supervise higher-voltage rails (e.g., 3.3V/3.6V/5.0V) while being powered from them.
Is MAX6464XR39+T compatible with lead-free assembly processes?
Yes, MAX6464XR39+T uses lead-free packaging, indicated by the "+T" suffix per Maxim's ordering convention. It is rated for reflow soldering up to +300°C (10-second peak), compliant with JEDEC J-STD-020 moisture sensitivity level 1, and suitable for standard Pb-free reflow profiles without special handling.
MAX6464XR39+T 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:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3.9V
- 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:
- SC-70-3
MAX6464XR39+T FAQ
1.How can I place an order for MAX6464XR39+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6464XR39+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 MAX6464XR39+T reliable?
The price and inventory of MAX6464XR39+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6464XR39+T is usually 5 days.
3.What payment methods are accepted for MAX6464XR39+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6464XR39+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6464XR39+T?
MAX6464XR39+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6464XR39+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 MAX6464XR39+T?
For technical support, including MAX6464XR39+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6464XR39+T requirements.
6.How does Aetrix verify that MAX6464XR39+T is sourced from the original manufacturer or authorized distributors?
All MAX6464XR39+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 MAX6464XR39+T meets industry standards.
7.What is the process for return or replacement of MAX6464XR39+T?
All MAX6464XR39+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6464XR39+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 MAX6464XR39+T part is unused and in its original packaging.
Return procedure for MAX6464XR39+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6464XR39+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…
