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Analog Devices Inc./Maxim Integrated MAX16056ATA26+T
- Part No.:
- MAX16056ATA26+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX16056ATA26+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,117
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Product details
Overview
The MAX16056ATA26+T from Analog Devices is an ultra-low-power microprocessor supervisory circuit with factory-trimmed 2.625V reset threshold, 125nA typical supply current, capacitor-adjustable reset timeout (14.18ms with 2700pF), and integrated watchdog timer. It asserts active-low RESET during VCC brownout, manual reset, or watchdog timeout-targeting battery-powered medical and portable electronics requiring guaranteed reset validity down to 1.1V.
For engineers reviewing the MAX16056ATA26+T datasheet, MAX16056ATA26+T pinout, MAX16056ATA26+T application, or MAX16056ATA26+T equivalent, key selection criteria include its 8-pin TDFN package, push-pull RESET output, -40°C to +125°C automotive qualification, adjustable watchdog timeout via SWT/WDS pins, and compatibility with low-leakage ceramic timing capacitors.
Technical Context
The MAX16056ATA26+T implements a precision bandgap-based voltage monitor with ±1.5% threshold accuracy at +25°C and ±2.5% over temperature, paired with dual ramp-based timing circuits: one for reset timeout (SRT pin, 5.15×10⁶ × CSRT) and another for watchdog timeout (SWT pin, floor-based calculation with 6.4ms clock period). Its internal watchdog supports normal and extended (×128) modes via WDS input.
It features guaranteed RESET assertion for VCC ≥ 1.1V, power-supply transient immunity up to 40µs at 100mV overdrive, and CMOS-compatible MR/WDI inputs with 150ns minimum pulse width. The device uses BiCMOS process technology and includes watchdog capacitor open-detect functionality.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.625V (factory-trimmed, ±2.5% over -40°C to +125°C) - ensures reliable brownout detection for 2.8V–3.3V systems |
| Supply Current | 125nA typical at +25°C - enables multi-year operation on coin-cell batteries in always-on monitoring applications |
| Reset Timeout | 14.18ms with 2700pF on SRT - configurable from ~0.2ms to >2s using 39pF–4.7µF capacitors |
| Watchdog Timeout | 6.4ms base period (±25% over temp), extendable to 217s with 0.33µF and WDS=VCC - supports flexible firmware supervision intervals |
| Operating Voltage | 1.1V to 5.5V - allows direct integration into ultra-low-voltage sensor nodes and legacy 5V subsystems |
| Temperature Range | -40°C to +125°C - qualified for under-hood automotive, industrial metering, and patient-monitoring environments |
| Output Type | Push-pull RESET - eliminates need for external pull-up resistor, simplifies interface to µP reset inputs |
Pinout & Package
MAX16056ATA26+T is housed in a 3mm × 3mm, 0.75mm height, 8-pin TDFN-EP package with exposed pad (EP) for thermal and electrical grounding. Pin 1 is marked by a dot; EP must be connected to GND per datasheet recommendation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 RESET | Active-low reset output | Push-pull driver guarantees valid logic level down to VCC = 1.1V; sinks 50µA @ 0.3V VOL |
| 2 GND | Ground reference | Primary return path for all internal circuits and timing ramps; connects to EP for optimal performance |
| 3 SWT | Watchdog timeout capacitor input | Connects to GND via capacitor (2275pF–0.54µF) to set base watchdog period; grounded to disable watchdog |
| 4 MR | Manual reset input | Active-low asynchronous trigger; no internal pull-up; requires external VCC tie if unused |
| 5 SRT | Reset timeout capacitor input | Connects to GND via capacitor (39pF–4.7µF) to set reset deassertion delay after VCC recovery |
| 6 WDI | Watchdog input | Falling edge resets watchdog timer; accepts pulses as short as 150ns; toggled by firmware to prevent timeout |
| 7 WDS | Watchdog select input | GND = normal mode (tWD); VCC = extended mode (tWD × 128); transition clears watchdog counter |
| 8 VCC | Supply voltage input | Monitored rail (1.1V–5.5V); requires 0.1µF bypass capacitor to GND for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low ICC | 125nA typical supply current enables >10-year battery life in glucose monitors and smart meters |
| Capacitor-adjustable tRP & tWD | Single external capacitor per function eliminates trimming resistors and reduces BOM count vs. fixed-timer ICs |
| Watchdog capacitor open detect | Automatically asserts RESET if SWT connection fails - prevents silent watchdog disable in safety-critical systems |
| Transient immunity | Immune to 40µs, 100mV VCC glitches - avoids spurious resets during switching regulator noise or hot-plug events |
| Guaranteed RESET down to 1.1V | Ensures deterministic reset behavior during deep brownout, critical for data integrity in flash programming sequences |
Applications
| Portable Medical Devices | Battery-Powered IoT Sensors |
|---|---|
Use Scenario: Continuous glucose monitoring patch operating on CR2032 coin cell for 90+ days. IC Role / Device Role / Timing Role: Supervises 2.8V LDO output; triggers full system reset on battery sag below 2.625V; provides 14ms reset hold time for safe MCU reboot. Use Value: Prevents corrupted sensor calibration due to undervoltage operation; extends usable battery range by tolerating transient dips without false reset. |
Use Scenario: Wireless environmental sensor node sleeping >99% of time, waking hourly to sample and transmit. IC Role / Device Role / Timing Role: Generates periodic wake pulse via WDI-grounded mode; controls external p-MOSFET to gate main power rail. Use Value: Reduces system shutdown current to near-zero; achieves sub-1µA average system current including supervisor overhead. |
| Automotive Cabin Electronics | Industrial Flow Meters |
Use Scenario: HVAC control module powered from vehicle battery with wide cold-crank voltage excursions. IC Role / Device Role / Timing Role: Monitors 3.3V domain; asserts RESET during cranking dips <2.625V; integrates watchdog to detect firmware lockup after EMI exposure. Use Value: Maintains functional safety compliance (ISO 26262 ASIL-B support) via dual-fault detection (voltage + software). |
Use Scenario: Ultrasonic flow meter in oil/gas pipeline with 10-year maintenance interval and harsh ESD environment. IC Role / Device Role / Timing Role: Provides brownout protection during 24V supply transients; uses MR input for field-service hard reset without power cycle. Use Value: Eliminates need for external RC reset network; withstands -40°C to +125°C ambient with guaranteed timing stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX16058ATA26+T | Same 2.625V threshold and watchdog, but open-drain RESET output | Requires external pull-up; better suited for level-shifting or wired-OR reset bus configurations | Select when interfacing to mixed-voltage µPs or sharing RESET line with other supervisors |
| TLV809E26DBVR | Fixed 2.63V threshold, no watchdog, 350nA ICC, SOT-23-3 package | Lacks capacitor-adjustable timing and fault supervision; simpler, lower-cost option for basic reset-only use | Select when watchdog is unnecessary and board space is constrained (3-pin vs. 8-pin) |
Compared with MAX16058ATA26+T, the MAX16056ATA26+T's push-pull output simplifies layout and reduces component count; compared with TLV809E26DBVR, it adds critical watchdog supervision and nanoscale current draw-justifying its use where firmware reliability and multi-year battery life are mandatory.
Availability
MAX16056ATA26+T is available at Aetrix Electronics and suitable for portable medical devices, battery-powered IoT sensors, and automotive cabin electronics requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX16056ATA26+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 semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.
The MAX16056–MAX16059 family was designed specifically for ultra-low-power system supervision in battery-constrained and safety-critical applications-emphasizing nanoamp current, wide temperature operation, and robust timing programmability.
FAQ
What is the factory-trimmed reset threshold voltage for MAX16056ATA26+T?
The MAX16056ATA26+T has a factory-trimmed reset threshold of 2.625V, with ±1.5% tolerance at +25°C and ±2.5% over the full -40°C to +125°C operating range. This value corresponds to the "26" suffix in the part number per Table 1 of the datasheet, and is laser-trimmed during production to ensure accuracy without external calibration.
Does MAX16056ATA26+T include a watchdog timer, and how is it configured?
Yes, MAX16056ATA26+T includes a configurable watchdog timer. It is enabled by connecting a capacitor between SWT and GND, and its timeout period is selected using the WDS pin: grounded for normal mode (base period), or tied to VCC for extended mode (×128 multiplier). The watchdog clears on falling-edge transitions at WDI or any RESET assertion event.
What package type and pin count does MAX16056ATA26+T use?
MAX16056ATA26+T uses an 8-pin TDFN-EP (Thin Dual Flat No-lead with Exposed Pad) package measuring 3mm × 3mm. Pin 1 is marked by a dot; the exposed pad (EP) must be soldered to GND for thermal performance and electrical stability, as specified in the Analog Devices package outline documentation.
Can MAX16056ATA26+T operate reliably below 1.8V supply voltage?
Yes, MAX16056ATA26+T operates from 1.1V to 5.5V and guarantees valid RESET output down to VCC = 1.1V. Its 125nA supply current and push-pull output remain functional across this range, making it suitable for energy-harvesting systems and ultra-low-voltage microcontrollers such as ARM Cortex-M0+ variants running at 1.2V.
How is the reset timeout period adjusted on MAX16056ATA26+T?
The reset timeout period on MAX16056ATA26+T is adjusted by connecting a capacitor (CSRT) between the SRT pin and GND. The relationship is linear: tRP = 5.15 × 10⁶ × CSRT (seconds). For example, a 2700pF capacitor yields 14.18ms. Ceramic X7R capacitors with leakage <10nA are recommended for stability across temperature and time.
MAX16056ATA26+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.625V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- Adjustable/Selectable
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN (3x3)
MAX16056ATA26+T FAQ
1.How can I place an order for MAX16056ATA26+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16056ATA26+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 MAX16056ATA26+T reliable?
The price and inventory of MAX16056ATA26+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16056ATA26+T is usually 5 days.
3.What payment methods are accepted for MAX16056ATA26+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16056ATA26+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16056ATA26+T?
MAX16056ATA26+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16056ATA26+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 MAX16056ATA26+T?
For technical support, including MAX16056ATA26+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16056ATA26+T requirements.
6.How does Aetrix verify that MAX16056ATA26+T is sourced from the original manufacturer or authorized distributors?
All MAX16056ATA26+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 MAX16056ATA26+T meets industry standards.
7.What is the process for return or replacement of MAX16056ATA26+T?
All MAX16056ATA26+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX16056ATA26+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 MAX16056ATA26+T part is unused and in its original packaging.
Return procedure for MAX16056ATA26+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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