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Analog Devices Inc./Maxim Integrated MAX6700UT+T
- Part No.:
- MAX6700UT+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6700UT+T.pdf
- Description:
- IC SUPERVISOR 3 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:3,019
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Product details
Overview
MAX6700UT+T from Analog Devices is a precision triple-voltage microprocessor supervisory circuit in SOT23-6 package, monitoring three adjustable supply voltages down to 0.62V with ±1.5% threshold accuracy, 5μs propagation delay, and 35μA quiescent current-used for reliable power-on reset and brownout detection in compact embedded systems.
For engineers reviewing the MAX6700UT+T datasheet, MAX6700UT+T pinout, MAX6700UT+T application, or MAX6700UT+T equivalent, this device serves as a low-power, high-accuracy voltage detector with guaranteed operation from -40°C to +105°C, open-drain RESET output with internal 10μA pullup to IN2/VCC, and immunity to short supply transients.
Technical Context
The MAX6700UT+T implements three independent precision comparators referenced to a stable 0.62V internal bandgap, each accepting externally scaled input voltages via resistor dividers. It operates without VCC dependency on monitored rails-powered solely by IN2 (or VCC in Q variants), with RESET validity maintained as long as IN1 or IN2 ≥ 1V.
Its architecture omits timeout logic (unlike MAX6710), delivering deterministic 5μs propagation delay after all inputs exceed thresholds. Input hysteresis is fixed at 0.3% of VTH, and transient immunity is validated up to 1000µs overdrive below threshold-enabling robust operation in noisy industrial and telecom power environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | VIN2 = 1.0V to 5.5V; supports direct powering from monitored 1.8V/2.5V/3.3V rails without external regulator. |
| Threshold Accuracy | ±1.5% over -40°C to +105°C; enables precise undervoltage detection for modern low-voltage ASICs and FPGAs. |
| Propagation Delay | 5µs max after all inputs exceed thresholds; ensures fast, deterministic reset release critical for real-time boot sequences. |
| Quiescent Current | 35µA typical at 5.5V; allows integration into always-on subsystems without compromising battery life or thermal budget. |
| Input Hysteresis | 0.3% of VTH; suppresses false resets caused by supply ripple or noise without degrading threshold resolution. |
| RESET Output Type | Open-drain with 10µA internal pullup to IN2; eliminates need for external pullup in 3.3V/2.5V logic interfaces. |
| Operating Temperature | -40°C to +105°C; qualified for extended-temperature industrial, networking, and automotive under-hood applications. |
Pinout & Package
Package: 6-pin SOT23-6, footprint-compatible with industry-standard 0.95mm pitch, suitable for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN1 | Adjustable voltage monitor input | Accepts scaled input via external resistor divider; threshold set by 0.62V reference; ±0.4µA input bias. |
| 2 - IN2 | Power supply and monitor input | Primary power source for device; also monitored; RESET valid if ≥1V; supplies internal circuitry and pullup. |
| 3 - IN3 | Adjustable voltage monitor input | Identical electrical behavior to IN1; supports independent scaling for third rail (e.g., I/O, core, analog supply). |
| 4 - IN4 | Adjustable voltage monitor input | Third adjustable input; unused pins must be tied to IN2 via 1MΩ resistor to prevent floating or ground connection. |
| 5 - GND | Analog and digital ground reference | Common return for all inputs and RESET; requires low-impedance connection to minimize noise coupling. |
| 6 - RESET | Active-low open-drain reset output | Asserts low when any INx falls below threshold; internal 10µA pullup to IN2; sinks up to 2mA; compatible with 0–5.5V logic. |
Key Features
| Feature | Design Value |
|---|---|
| Triple adjustable voltage monitoring | Three independent 0.62V-referenced inputs enable simultaneous supervision of 1.8V, 2.5V, and 3.3V rails using external dividers. |
| Low-power operation | 35µA supply current allows deployment in energy-sensitive applications such as remote sensors and always-on controllers. |
| Transient-immune detection | Immunity to ≤1000µs supply glitches ensures no spurious resets during switching noise or load transients. |
| Wide input voltage range | Operates with IN2 as low as 1.0V, supporting supervision of ultra-low-voltage domains like FPGA auxiliary supplies. |
| Industrial temperature grade | Guaranteed functionality across -40°C to +105°C enables use in uncontrolled environments without derating. |
Applications
| Telecom Line Cards | Industrial PLC Modules |
|---|---|
|
Use Scenario: Monitoring multiple isolated DC-DC outputs (e.g., 3.3V control, 2.5V I/O, 1.8V FPGA core) on a carrier-grade line card. IC Role / Device Role / Timing Role: Triple-voltage detector asserting single RESET signal to halt processor boot until all rails stabilize. Use Value: Eliminates discrete supervisor ICs and reduces BOM count while maintaining ±1.5% threshold accuracy across temperature. |
Use Scenario: Supervising redundant 24V-to-5V/3.3V/1.8V power chains in programmable logic controller backplanes. IC Role / Device Role / Timing Role: Fault-detection node triggering system-wide reset upon any rail collapse, with 5µs response enabling rapid recovery. Use Value: 35µA quiescent current minimizes standby loss; 105°C rating supports convection-cooled enclosures without heatsinking. |
| Network Switch ASIC Power | Embedded Medical Imaging Controller |
|
Use Scenario: Validating pre-regulator and post-LDO voltages feeding multi-core network processors in 1U switches. IC Role / Device Role / Timing Role: Precision voltage detector ensuring ASIC power integrity before clock enable and configuration loading. Use Value: 0.3% hysteresis prevents chatter near threshold; open-drain RESET interfaces directly with 1.2V/1.8V processor reset inputs. |
Use Scenario: Ensuring stable power sequencing for FPGA-based image acquisition engines in portable ultrasound devices. IC Role / Device Role / Timing Role: Compact triple-rail supervisor verifying battery-backed 3.3V, 2.5V sensor interface, and 1.8V memory supply. Use Value: SOT23-6 footprint saves space on constrained PCBs; -40°C to +105°C range covers clinical and transport temperature extremes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6710AUT+T | Quad-monitor with fixed 5.0V/3.3V/2.5V thresholds + one adjustable input; includes 140ms reset timeout. | Used where deterministic timeout is required (e.g., CPU boot hold), not just fast detection. | Select MAX6710AUT+T when system requires guaranteed minimum reset assertion time after fault clearance. |
| TPS3808G33DBVR | Single-channel 3.3V supervisor with 200ms timeout, 1.6µA IQ, but no multi-rail capability. | Limited to single-supply monitoring; lacks triple-adjustable architecture and IN2-powered operation. | Choose TPS3808G33DBVR only for cost-sensitive single-rail designs where footprint and ultra-low IQ outweigh multi-rail needs. |
Compared with MAX6710AUT+T, the MAX6700UT+T trades timeout functionality for faster 5µs response and full adjustability across all three inputs; versus TPS3808G33DBVR, it delivers triple-rail supervision in the same SOT23-6 footprint but at higher quiescent current-making it optimal for compact multi-supply systems requiring precision and speed over minimal IQ.
Availability
MAX6700UT+T is available at Aetrix Electronics and suitable for telecommunications infrastructure, industrial PLC modules, and embedded medical imaging controllers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6700UT+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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.
The MAX6700UT+T belongs to Analog Devices' precision supervisory IC product line, engineered for compact, multi-rail power integrity monitoring in space-constrained and thermally demanding embedded systems.
FAQ
What is the function of the IN2 pin on the MAX6700UT+T?
The IN2 pin on the MAX6700UT+T serves dual roles: it powers the device and acts as a monitored voltage input. RESET remains valid as long as IN2 ≥ 1.0V, and the internal 10µA pullup for the open-drain RESET output connects to IN2. This eliminates the need for a separate supply rail and simplifies design in systems where one monitored rail (e.g., 3.3V) can also power the MAX6700UT+T.
Can the MAX6700UT+T monitor a 5.0V supply?
Yes, the MAX6700UT+T can monitor a 5.0V supply using an external resistor divider to scale it down to the 0.62V internal threshold. For example, with R1 = 6.0kΩ and R2 = 820Ω, VINTH = 0.62V × (6.0k + 0.82k)/0.82k ≈ 5.0V. The device guarantees ±0.2µA input bias on adjustable inputs, enabling accurate scaling with standard 1% resistors up to 100kΩ.
Does the MAX6700UT+T have a built-in reset timeout period?
No, the MAX6700UT+T does not include a reset timeout period. Unlike the MAX6710 series, it functions as a voltage detector with a 5µs propagation delay after all monitored inputs exceed their thresholds. RESET deasserts immediately after that delay-making it suitable for applications requiring fast, deterministic reset release rather than fixed-duration hold.
What is the maximum input voltage allowed on adjustable inputs (IN1, IN3, IN4) of the MAX6700UT+T?
The MAX6700UT+T includes an internal 1.5V clamp on each adjustable input (IN1, IN3, IN4). Applying more than 1.5V directly risks exceeding the ±0.4µA (IN1) or ±0.2µA (IN3/IN4) input current specification and may increase bias error. Always use a resistor divider to ensure the voltage presented to these pins stays within 0V to 1.5V, with 0.62V as the effective threshold reference.
How does the MAX6700UT+T handle unused monitor inputs?
Unused monitor inputs on the MAX6700UT+T must not be left floating or grounded. For adjustable inputs (IN1, IN3, IN4), connect a 1MΩ series resistor between the pin and IN2 (or VCC in Q variants) to limit bias current and maintain valid logic state. This prevents erroneous reset assertion due to leakage or noise, preserving system reliability without adding active components.
MAX6700UT+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 3
- Voltage - Threshold:
- Adjustable/Selectable
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 5µs Typical Propagation Delay
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-6
MAX6700UT+T FAQ
1.How can I place an order for MAX6700UT+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6700UT+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 MAX6700UT+T reliable?
The price and inventory of MAX6700UT+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6700UT+T is usually 5 days.
3.What payment methods are accepted for MAX6700UT+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6700UT+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6700UT+T?
MAX6700UT+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6700UT+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 MAX6700UT+T?
For technical support, including MAX6700UT+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6700UT+T requirements.
6.How does Aetrix verify that MAX6700UT+T is sourced from the original manufacturer or authorized distributors?
All MAX6700UT+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 MAX6700UT+T meets industry standards.
7.What is the process for return or replacement of MAX6700UT+T?
All MAX6700UT+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6700UT+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 MAX6700UT+T part is unused and in its original packaging.
Return procedure for MAX6700UT+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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