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Analog Devices Inc./Maxim Integrated MAX16056ATA16+T
- Part No.:
- MAX16056ATA16+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX16056ATA16+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,798
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Product details
Overview
MAX16056ATA16+T from Analog Devices is an ultra-low-power microprocessor supervisory IC with factory-trimmed 1.575V reset threshold, 125nA typical supply current, capacitor-adjustable reset timeout (10.5–17.0ms), and integrated watchdog timer with WDS-selectable 128× extension. It operates from 1.1V to 5.5V over –40°C to +125°C and delivers push-pull RESET output in a 3mm × 3mm 8-pin TDFN package - used in glucose monitors, portable medical devices, and battery-powered metering systems.
For engineers reviewing the MAX16056ATA16+T datasheet, MAX16056ATA16+T pinout, MAX16056ATA16+T application, or MAX16056ATA16+T equivalent, key selection criteria include its nanoPower consumption, adjustable watchdog timeout via SWT capacitor, manual reset input (MR) with 250ns delay, guaranteed RESET validity down to VCC = 1.1V, and automotive-grade temperature support.
Technical Context
The MAX16056ATA16+T implements a precision voltage monitor with ±1.5% threshold accuracy at +25°C and ±2.5% over full temperature range, paired with dual ramp-based timing circuits: SRT sets reset timeout via external capacitor (tRP = 5.15 × 10⁶ × CSRT), while SWT and WDS jointly configure watchdog behavior - normal mode (tWD ≈ 6.4ms base period) or extended mode (×128). Its BiCMOS process enables stable operation under fast VCC transients (e.g., ≤40µs for 100mV overdrive).
It features active-low push-pull RESET with VOL ≤ 0.3V at 50µA sink, VOH ≥ 0.8 × VCC at 200µA source, and MR input with 1µs minimum pulse width and 200ns glitch rejection. The exposed pad (EP) must be connected to GND for thermal and electrical integrity, and all logic inputs accept standard CMOS levels referenced to VCC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 125nA typical at VCC = 1.8V, –40°C to +125°C - enables multi-year battery life in always-on medical sensors |
| Reset Threshold | 1.575V (factory-trimmed, ±1.5% @ +25°C) - matches low-voltage microcontrollers like ARM Cortex-M0+ |
| Reset Timeout | 10.5–17.0ms (CSRT = 2700pF) - configurable via external capacitor to match µP power-up sequence |
| Watchdog Timeout | 6.4ms base period (±25% over temp), extendable to 819.2ms via WDS - prevents firmware lockup in unattended devices |
| Operating Voltage | 1.1V to 5.5V - supports single-cell Li-ion (3.0–4.2V), coin cell (1.5V), and 3.3V/5V logic domains |
| Temperature Range | –40°C to +125°C - qualified for under-hood automotive and industrial edge nodes |
| Output Type | Push-pull RESET - eliminates need for external pull-up resistor, reduces BOM count |
Pinout & Package
MAX16056ATA16+T uses an 8-pin 3mm × 3mm TDFN-EP package with exposed pad (EP) requiring connection to GND. Pin 1 is RESET (active-low push-pull output), Pin 2 is GND, Pin 3 is SWT (watchdog timeout capacitor input), Pin 4 is MR (manual reset input), Pin 5 is SRT (reset timeout capacitor input), Pin 6 is WDS (watchdog select input), Pin 7 is WDI (watchdog input), and Pin 8 is VCC. EP is not electrically isolated and must be soldered to ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low reset output | Drives µP /RESET pin directly; sinks 50µA @ 0.3V max; no external pull-up needed |
| 2 - GND | Ground reference | Common return for all internal circuits and EP thermal path |
| 3 - SWT | Watchdog timeout capacitor node | Connects to GND via CSWT (2275pF–0.54µF); sampling initiates after RESET deassertion |
| 4 - MR | Manual reset input | Asynchronous active-low trigger; 1µs min pulse width; no internal pull-up - requires external VCC tie if unused |
| 5 - SRT | Reset timeout capacitor node | Connects to GND via CSRT (39pF–4.7µF); sets tRP = 5.15 × 10⁶ × CSRT (seconds) |
| 6 - WDS | Watchdog mode select | GND = normal mode (tWD); VCC = extended mode (tWD × 128); transition clears watchdog counter |
| 7 - WDI | Watchdog input | Falling edge resets watchdog timer; detects pulses ≥150ns; cleared during RESET assertion |
| 8 - VCC | Supply input | Monitored voltage rail; bypass with 0.1µF ceramic capacitor to GND near pin |
Key Features
| Feature | Design Value |
|---|---|
| 125nA nanoPower operation | Enables >10-year battery life in portable medical devices powered by CR2032 cells |
| Capacitor-adjustable reset timeout | Eliminates fixed-timer ICs and allows precise matching to µP boot sequence without firmware changes |
| Watchdog with 128× timeout extension | Supports long software loops (e.g., sensor polling every 200s) while retaining fault detection granularity |
| Guaranteed RESET validity down to VCC = 1.1V | Ensures reliable brownout recovery even during deep discharge of single-cell Li-ion batteries |
| Power-supply transient immunity | Rejects <40µs, 100mV VCC glitches - critical for noisy automotive and industrial power rails |
| Automotive-grade qualification | Validated across –40°C to +125°C with AEC-Q100 stress testing - suitable for engine control and ADAS subsystems |
Applications
| Glucose Monitoring Systems | Patient Vital Sign Monitors |
|---|---|
Use Scenario: Continuous glucose sensing in wearable patch pumps where battery life and reliability are critical. IC Role / Device Role / Timing Role: Supervises MCU power rail during sleep/wake cycles and triggers hardware reset on brownout or firmware hang. Use Value: 125nA quiescent current extends CR2032 battery life beyond 2 years; adjustable watchdog prevents missed insulin dosing due to software freeze. |
Use Scenario: Portable ECG and SpO₂ monitors used in home healthcare and clinical triage. IC Role / Device Role / Timing Role: Provides deterministic reset timing during cold start and ensures safe shutdown when battery drops below 1.6V. Use Value: Factory-trimmed 1.575V threshold aligns precisely with low-voltage analog front-end (AFE) supply; push-pull output drives reset line without pull-up resistor. |
| Smart Utility Meters | HVAC Environmental Sensors |
Use Scenario: Battery-backed gas/water meters operating in unattended field deployments for >15 years. IC Role / Device Role / Timing Role: Monitors primary Li-SOCl₂ cell and asserts reset if voltage sags during RF transmission bursts. Use Value: Transient immunity prevents false resets during 100mA GSM/GPRS transmit spikes; wide temperature range ensures operation in outdoor enclosures. |
Use Scenario: Wireless temperature/humidity sensors mounted in HVAC ducts with wide ambient swings. IC Role / Device Role / Timing Role: Supervises 3.3V regulator output feeding MCU and radio; manual reset supports field service recovery. Use Value: MR input enables technician-initiated reset without power cycling; 1.1V valid RESET guarantees operation down to end-of-life battery voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX16058ATA16+T | Same pinout and specs, but open-drain RESET output instead of push-pull | Requires external pull-up resistor; better suited for level-shifting or wired-OR reset buses | Select when interfacing with mixed-voltage systems or sharing RESET line with other supervisors |
| TPS3808G15DBVR | Higher 1.8µA supply current; fixed 1.5V threshold; no watchdog; SOT-23-6 package | Lacks capacitor-adjustable timing and watchdog - limited to basic power monitoring | Choose only for cost-sensitive, non-watchdog applications where 1.5V threshold suffices and board space is constrained |
Compared with MAX16056ATA16+T, MAX16058ATA16+T trades push-pull simplicity for interface flexibility, while TPS3808G15DBVR sacrifices nanoPower operation and configurability for lower unit cost and smaller footprint - neither offers the same combination of ultra-low current, adjustable timing, and integrated watchdog.
Availability
MAX16056ATA16+T is available at Aetrix Electronics and suitable for glucose monitors, smart utility meters, and HVAC environmental sensors requiring stable component supply across extended product lifecycles and automotive-grade reliability.
Supply support for MAX16056ATA16+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, headquartered in Wilmington, MA.
The MAX16056–MAX16059 family was designed specifically for ultra-low-power, safety-critical supervision in portable medical, industrial, and automotive applications - emphasizing nanoPower operation, robust timing control, and extended temperature reliability.
FAQ
What is the factory-trimmed reset threshold voltage for MAX16056ATA16+T?
The MAX16056ATA16+T has a factory-trimmed reset threshold of 1.575V (minimum 1.536V, maximum 1.614V at +25°C), with ±2.5% tolerance over the full –40°C to +125°C operating range. This value is confirmed in Table 1 of the datasheet under suffix "16", and applies exclusively to the MAX16056ATA16+T variant - not to other members of the MAX16056–MAX16059 family.
Does MAX16056ATA16+T include a watchdog timer, and how is it configured?
Yes, MAX16056ATA16+T includes a capacitor-adjustable watchdog timer. It is configured using the SWT pin (capacitor to GND) and WDS pin (GND for normal mode, VCC for ×128 extended mode). The base watchdog period is ~6.4ms, scalable up to ~819ms. WDI must receive a falling edge within each timeout window to prevent reset assertion - a feature verified in the Detailed Description section and Figure 2 of the datasheet.
What package type and pin count does MAX16056ATA16+T use?
MAX16056ATA16+T uses an 8-pin TDFN-EP (Thin Dual Flat No-lead with Exposed Pad) package measuring 3mm × 3mm. Pin 1 is RESET, Pin 2 is GND, Pin 3 is SWT, Pin 4 is MR, Pin 5 is SRT, Pin 6 is WDS, Pin 7 is WDI, and Pin 8 is VCC. The exposed pad (EP) must be connected to GND for thermal performance and electrical stability - confirmed in Package Information and Pin Configurations sections.
Can MAX16056ATA16+T operate with supply voltages below 1.8V?
Yes, MAX16056ATA16+T operates from 1.1V to 5.5V. Its 125nA typical supply current is specified down to VCC = 1.8V, and RESET output remains valid (with VOL ≤ 0.3V at 50µA sink) even as VCC falls to 1.1V - enabling use with single alkaline or lithium coin cells. This is explicitly guaranteed in the Electrical Characteristics table under "Guaranteed RESET Valid for VCC ≥ 1.1V".
How is the reset timeout period adjusted on MAX16056ATA16+T?
The reset timeout period on MAX16056ATA16+T is adjusted by connecting an external capacitor (CSRT) between the SRT pin and GND. The relationship is tRP = 5.15 × 10⁶ × CSRT (tRP in seconds, CSRT in farads). For example, a 2700pF capacitor yields 10.5–17.0ms timeout - values validated in Table 2 and Electrical Characteristics. Ceramic X7R capacitors are recommended for low leakage and temperature stability.
MAX16056ATA16+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:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 1.575V
- 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)
MAX16056ATA16+T FAQ
1.How can I place an order for MAX16056ATA16+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16056ATA16+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 MAX16056ATA16+T reliable?
The price and inventory of MAX16056ATA16+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16056ATA16+T is usually 5 days.
3.What payment methods are accepted for MAX16056ATA16+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16056ATA16+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16056ATA16+T?
MAX16056ATA16+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16056ATA16+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 MAX16056ATA16+T?
For technical support, including MAX16056ATA16+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16056ATA16+T requirements.
6.How does Aetrix verify that MAX16056ATA16+T is sourced from the original manufacturer or authorized distributors?
All MAX16056ATA16+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 MAX16056ATA16+T meets industry standards.
7.What is the process for return or replacement of MAX16056ATA16+T?
All MAX16056ATA16+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX16056ATA16+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 MAX16056ATA16+T part is unused and in its original packaging.
Return procedure for MAX16056ATA16+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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