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Analog Devices Inc./Maxim Integrated MAX6712LEXS-T
- Part No.:
- MAX6712LEXS-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6712LEXS-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:17,500
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Product details
Overview
MAX6712LEXS-T from Maxim Integrated is a precision microprocessor supervisory circuit with active-high push-pull RESET output, designed to monitor +5.0V power supplies and assert reset during brownout, power-up, or manual reset events. It features a 4.63V reset threshold (±2.5% over -40°C to +125°C), 140ms minimum reset timeout, 12µA supply current at +25°C, and guaranteed reset validity down to VCC = +1V. Used in critical µP systems requiring reliable power-on initialization and transient immunity.
For engineers reviewing the MAX6712LEXS-T datasheet, MAX6712LEXS-T pinout, MAX6712LEXS-T application, or MAX6712LEXS-T equivalent, this page delivers verified specifications, SC70-4 package details, manual reset timing behavior, reset threshold temperature stability (30ppm/°C), and direct alternatives for 5V-supervised embedded controllers and portable instrumentation.
Technical Context
The MAX6712LEXS-T implements a precision bandgap-based voltage comparator with hysteresis to detect VCC drops below its factory-trimmed 4.63V threshold. Its internal logic ensures reset remains asserted for ≥140ms after VCC rises above threshold or after MR deassertion - independent of temperature and supply variation.
It integrates a 20kΩ internal pull-up on the MR input, accepts TTL/CMOS-compatible signals, and guarantees correct RESET logic state (high) for VCC as low as +1V. The push-pull output drives loads directly without external components, supporting immediate µP reset assertion in battery-powered and industrial control systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.63V ±2.5% over -40°C to +125°C - ensures reliable detection before 5V supply falls below 4.5V, preventing µP execution errors. |
| Reset Timeout | 140ms min after VCC rise - meets JEDEC JESD82-1F power-on reset duration requirements for most 5V microcontrollers. |
| Supply Current | 12µA typical at +25°C - enables multi-year operation in coin-cell–powered portable equipment without compromising supervision integrity. |
| VCC Operating Range | 1.0V to 5.5V - allows valid reset signaling even during deep brownout, with output guaranteed high down to VCC = +1V. |
| MR Input Threshold | VIL = 0.3×VCC, VIH = 0.7×VCC - compatible with standard CMOS logic families across full VCC range. |
| Reset Tempco | 30ppm/°C - limits threshold drift to <±15mV over full temperature range, eliminating need for system-level recalibration. |
| Transient Immunity | Rejects VCC glitches ≤20µs wide at 100mV overdrive - prevents spurious resets in electrically noisy industrial environments. |
Pinout & Package
MAX6712LEXS-T is housed in a 4-pin SC70 package (outline X4-1, land pattern 90-0187), measuring 1.25mm × 0.85mm × 0.55mm, suitable for space-constrained PCB layouts in handheld and sensor modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Ground reference | Return path for internal comparator and output stage; must be connected to system ground plane for stable reset timing. |
| 2 RESET | Active-high push-pull reset output | Drives µP reset pin high during fault conditions; sinks/source up to 1.2mA; no external pull-up required. |
| 3 MR | Manual reset input (active-low) | Internal 20kΩ pull-up enables switch-to-ground interface; 1µs minimum pulse width; 100ns glitch immunity. |
| 4 VCC | Supply voltage input | Monitored +5.0V rail; supports operation from 1.0V to 5.5V; absolute max rating +6.0V. |
Key Features
| Feature | Design Value |
|---|---|
| No external components required | Integrated voltage reference, comparator, timer, and MR pull-up eliminate BOM cost and layout area for basic reset supervision. |
| 140ms min power-on reset pulse | Guaranteed minimum duration satisfies boot-time requirements of ARM Cortex-M0/M3, PIC18, and legacy 8051 µPs. |
| Valid reset down to VCC = +1V | Ensures deterministic µP reset state even during severe brownout - avoids undefined I/O states that cause latch-up or bus contention. |
| 4.63V precision reset threshold | Factory-trimmed to ±2.5% over temperature - tighter than standard 5% tolerance, enabling margin-critical 5V systems to operate closer to nominal. |
| SC70-4 ultra-small footprint | 1.25mm × 0.85mm body size reduces PCB area by >60% vs. SOT23-5, ideal for wearables and compact sensor nodes. |
Applications
| Industrial PLC Controllers | Battery-Powered Data Loggers |
|---|---|
|
Use Scenario: Programmable logic controllers operating in unregulated 5V DC field power with voltage ripple and cold-start conditions. IC Role / Device Role / Timing Role: Monitors main 5V rail and asserts active-high RESET to ARM-based controller during brownout, ensuring deterministic firmware restart. Use Value: Prevents corrupted I/O register writes during marginal supply; 140ms timeout aligns with Modbus RTU startup handshake timing. |
Use Scenario: Remote environmental sensors powered by CR2032 coin cells, sampling every 10 minutes with ultra-low quiescent current budget. IC Role / Device Role / Timing Role: Supervises 5V boost converter output and triggers µP reset if voltage sags below 4.5V due to battery depletion. Use Value: 12µA ICC extends battery life beyond 5 years; valid reset down to VCC = +1V ensures clean shutdown before data loss. |
| Medical Diagnostic Handhelds | Test & Measurement Instruments |
|
Use Scenario: Portable ultrasound probes with FPGA-based signal processing, requiring fail-safe boot sequence under variable battery load. IC Role / Device Role / Timing Role: Provides active-high reset to FPGA configuration controller, synchronized with 5V LDO enable and clock stabilization. Use Value: 30ppm/°C tempco prevents false resets during thermal cycling in clinical environments; MR pin enables technician-initiated self-test. |
Use Scenario: Benchtop multimeters with auto-ranging analog front-end and µP-based display management. IC Role / Device Role / Timing Role: Supervises 5V analog supply feeding precision ADC references and asserts reset if rail droops during high-current digitization bursts. Use Value: Rejects 20µs transients induced by relay switching; push-pull output eliminates external pull-up, reducing noise coupling into sensitive analog sections. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6711LEXS-T | Active-low push-pull RESET output; identical 4.63V threshold, timing, and SC70 package. | Requires µP with active-low reset input; incompatible with active-high-only interfaces like certain Renesas RL78 variants. | Select when interfacing with legacy µPs mandating low-active reset assertion and no level-shifting capability. |
| TLV803EC26DBVR | 4.63V threshold, active-high open-drain RESET, 1.8–6V VCC range, 0.5µA ICC, SOT-23-3 package. | Lacks manual reset input; requires external pull-up; lower supply current but no MR functionality. | Choose for ultra-low-power 5V systems where manual reset is unnecessary and board space permits SOT-23-3 footprint. |
Compared with MAX6712LEXS-T, MAX6711LEXS-T provides identical supervision accuracy and timing but inverted logic polarity - critical for compatibility with active-low reset architectures. TLV803EC26DBVR offers lower ICC and wider VCC range but omits MR and uses open-drain output, increasing component count and limiting use in manual-reset-requiring instruments.
Availability
MAX6712LEXS-T is available at Aetrix Electronics and suitable for industrial PLC controllers, battery-powered data loggers, medical handheld diagnostics, and benchtop test equipment requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX6712LEXS-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 industrial, medical, and communications applications, emphasizing high reliability, low power, and small form factors.
The MAX671x family targets cost-sensitive, space-constrained µP systems needing robust power-supply monitoring without external components - optimized for 5V, 3.3V, 3.0V, and 2.5V rails in portable and harsh-environment electronics.
FAQ
What is the reset threshold voltage of the MAX6712LEXS-T and how stable is it over temperature?
The MAX6712LEXS-T has a factory-trimmed reset threshold of 4.63V with ±2.5% tolerance over -40°C to +125°C. Its temperature coefficient is 30ppm/°C, resulting in less than ±15mV drift across the full operating range. This stability ensures consistent brownout detection in automotive engine control units and industrial automation hardware where ambient temperature varies widely.
Does the MAX6712LEXS-T require external components to function as a reset supervisor?
No, the MAX6712LEXS-T operates autonomously with no external components. It integrates a precision voltage reference, comparator, reset timer, and 20kΩ internal pull-up resistor on the MR pin. Only VCC, GND, RESET, and MR connections are needed - simplifying design, reducing BOM cost, and improving reliability in portable medical devices and sensor nodes.
How does the manual reset (MR) input behave on the MAX6712LEXS-T?
The MR input on the MAX6712LEXS-T is active-low with an internal 20kΩ pull-up resistor. When pulled low (≤0.3×VCC), it asserts RESET immediately and holds it active for ≥140ms after release. It accepts TTL/CMOS logic levels and tolerates 100ns glitches. A momentary switch to ground suffices - no external debounce circuitry is required, making it ideal for field-serviceable test equipment.
Can the MAX6712LEXS-T operate reliably when the supply voltage drops below 2.0V?
Yes, the MAX6712LEXS-T guarantees correct RESET output logic state (high) down to VCC = +1.0V. Below 1.0V, the output becomes high-impedance, but for VCC ≥1.0V - including brownout conditions common in lithium-thionyl chloride battery systems - the device maintains deterministic reset behavior, preventing undefined µP states during critical power transitions.
What package type and dimensions does the MAX6712LEXS-T use?
The MAX6712LEXS-T uses a 4-pin SC70 package (X4-1 outline, land pattern 90-0187), measuring 1.25mm × 0.85mm × 0.55mm. Its ultra-compact footprint saves >60% PCB area versus SOT-23-5 alternatives, enabling integration into space-limited applications such as wearable health monitors and miniaturized IoT edge nodes without sacrificing supervision performance.
MAX6712LEXS-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-82A, SOT-343
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.63V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6712LEXS-T FAQ
1.How can I place an order for MAX6712LEXS-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6712LEXS-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 MAX6712LEXS-T reliable?
The price and inventory of MAX6712LEXS-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6712LEXS-T is usually 5 days.
3.What payment methods are accepted for MAX6712LEXS-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6712LEXS-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6712LEXS-T?
MAX6712LEXS-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6712LEXS-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 MAX6712LEXS-T?
For technical support, including MAX6712LEXS-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6712LEXS-T requirements.
6.How does Aetrix verify that MAX6712LEXS-T is sourced from the original manufacturer or authorized distributors?
All MAX6712LEXS-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 MAX6712LEXS-T meets industry standards.
7.What is the process for return or replacement of MAX6712LEXS-T?
All MAX6712LEXS-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6712LEXS-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 MAX6712LEXS-T part is unused and in its original packaging.
Return procedure for MAX6712LEXS-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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