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Analog Devices Inc./Maxim Integrated MAX16056ATA23+T
- Part No.:
- MAX16056ATA23+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX16056ATA23+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,114
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Product details
Overview
MAX16056ATA23+T from Analog Devices is an ultra-low-power microprocessor supervisory IC with factory-trimmed 2.313V reset threshold, capacitor-adjustable reset timeout (14.18ms typical), watchdog timer, and push-pull active-low RESET output. It monitors single VCC supply (1.1V–5.5V), asserts reset on brownout/manual trigger/watchdog timeout, and maintains reset assertion for adjustable period after recovery - used in glucose monitors, portable medical devices, and battery-powered industrial sensors.
For engineers reviewing the MAX16056ATA23+T datasheet, MAX16056ATA23+T pinout, MAX16056ATA23+T application, or MAX16056ATA23+T equivalent, key selection criteria include its 125nA typical supply current, -40°C to +125°C automotive-grade operation, 8-pin TDFN-EP package, watchdog select (WDS) input for 128× timeout extension, and guaranteed RESET validity down to VCC = 1.1V.
Technical Context
The MAX16056ATA23+T implements a precision bandgap-based voltage monitor with ±2.5% threshold accuracy over temperature and 0.5% hysteresis. Its internal watchdog timer uses a ramp-current/charge-time architecture referenced to SWT and WDS inputs, enabling deterministic timeout scaling (normal or ×128 mode) independent of VCC variation.
Reset assertion is triggered by VCC falling below 2.313V (±2.5%), MR low, or watchdog timeout expiration; deassertion occurs after VCC rises above 2.313V + hysteresis and the capacitor-programmable tRP delay elapses. The push-pull RESET output drives up to 1.2mA sink at VCC ≥ 2.7V with VOL ≤ 0.3V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 125nA typ at VCC = 1.8V, TA = -40°C to +125°C - enables multi-year battery life in always-on medical sensors |
| Reset Threshold | 2.313V (suffix "23"), ±2.5% over -40°C to +125°C - matches 2.3V rail monitoring with built-in hysteresis |
| Reset Timeout | 14.18ms typical with 2700pF SRT capacitor - ensures reliable μP initialization after power recovery |
| Watchdog Timeout | 6.4ms typical base period (tWDPER), extendable to 819.2ms via WDS high - supports firmware watchdog servicing intervals |
| Operating Range | -40°C to +125°C - qualified for under-hood automotive and industrial edge nodes |
| RESET Output Type | Push-pull, active-low - eliminates external pull-up resistor, reduces BOM count and board space |
| VCC Range | 1.1V to 5.5V - supports Li-ion, coin-cell, and multi-rail systems without level-shifting |
Pinout & Package
MAX16056ATA23+T is housed in an 8-pin 3mm × 3mm TDFN-EP package with exposed pad (EP) for thermal enhancement and EMI reduction. EP must be connected to GND per datasheet recommendation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-low push-pull reset output; asserts during VCC brownout, MR low, or watchdog timeout; holds for tRP after recovery |
| 2 | GND | Ground reference for all analog and digital circuitry; EP must also connect to GND |
| 3 | SWT | Watchdog timeout capacitor input; sets base tWD period; grounding disables watchdog |
| 4 | MR | Manual-reset input; falling edge asserts RESET; no internal pull-up - requires external VCC tie if unused |
| 5 | SRT | Reset timeout capacitor input; determines tRP duration (tRP = 5.15 × 10⁶ × CSRT) |
| 6 | WDI | Watchdog input; falling edge resets watchdog timer; minimum pulse width 150ns |
| 7 | WDS | Watchdog select input; GND = normal mode, VCC = ×128 extended timeout |
| 8 | VCC | Supply input and monitored rail; bypass with 0.1µF ceramic capacitor to GND |
Key Features
| Feature | Design Value |
|---|---|
| 125nA ultra-low ICC | Enables >10-year battery life in coin-cell-powered patient monitors without compromising supervision reliability |
| Capacitor-adjustable tRP and tWD | Eliminates trimming resistors and firmware configuration - hardware-defined timing simplifies certification |
| Watchdog disable via SWT-to-GND | Allows functional safety validation in test modes without watchdog interference or software overhead |
| Guaranteed RESET validity to VCC = 1.1V | Ensures deterministic reset behavior during deep brownout, critical for fail-safe shutdown in medical devices |
| Power-supply transient immunity | Rejects <40µs, 100mV VCC glitches - prevents spurious resets in noisy automotive or industrial environments |
Applications
| Glucose Monitoring Systems | Portable ECG Devices |
|---|---|
Use Scenario: Continuous glucose sensing in wearable patch pumps requiring long-term battery operation and fail-safe power management. IC Role / Device Role / Timing Role: Supervisory IC monitoring 2.3V sensor rail; asserts RESET on brownout to halt insulin delivery and log fault before shutdown. Use Value: 125nA supply current extends single CR2032 battery life beyond 2 years; 2.313V threshold precisely matches sensor ASIC supply tolerance. | Use Scenario: Handheld ECG recorders powered by rechargeable Li-ion batteries with intermittent clinical use patterns. IC Role / Device Role / Timing Role: Resets microcontroller on power-up and detects firmware hangs via watchdog; push-pull output directly drives reset pin without pull-up. Use Value: Adjustable 14.18ms tRP ensures full ADC calibration completes before firmware execution; WDS input allows field-upgradable watchdog timeout. |
| Smart Utility Meters | Automotive Cabin Sensors |
Use Scenario: Battery-backed AMI meters operating in extreme ambient temperatures (-40°C to +85°C) with infrequent RF transmission. IC Role / Device Role / Timing Role: Monitors backup supercapacitor voltage; triggers controlled shutdown and nonvolatile memory save upon VCC drop below 2.313V. Use Value: -40°C to +125°C qualification ensures operation in unheated meter enclosures; 0.5% hysteresis prevents reset oscillation during slow voltage decay. | Use Scenario: Occupancy and air quality sensors mounted near HVAC vents in vehicle cabins subject to thermal cycling and EMI. IC Role / Device Role / Timing Role: Provides robust reset signaling for ARM Cortex-M0+ MCU; rejects VCC transients induced by blower motor switching. Use Value: Transient immunity graph confirms no reset for ≤40µs, 100mV glitches - eliminates false resets during HVAC actuation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX16058ATA23+T | Same 2.313V threshold and watchdog, but open-drain RESET output | Requires external pull-up resistor; suited for level-shifting or wired-OR reset buses | Select when interfacing to mixed-voltage systems or sharing RESET line with other supervisors |
| TLV809E23DBVR | No watchdog; fixed 2.32V threshold; 1.8µA ICC; SOT-23-3 package | Lacks capacitor-adjustable timing and manual reset; limited to basic reset-only functions | Select only for cost-sensitive, space-constrained designs where watchdog and timing flexibility are unnecessary |
Compared with MAX16058ATA23+T, the MAX16056ATA23+T eliminates pull-up components and simplifies layout; versus TLV809E23DBVR, it delivers 15× lower supply current and full watchdog supervision - critical for certified medical and automotive applications.
Availability
MAX16056ATA23+T is available at Aetrix Electronics and suitable for glucose monitors, portable ECG devices, and smart utility meters requiring stable component supply across automotive and industrial temperature ranges.
Supply support for MAX16056ATA23+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.
The MAX16056–MAX16059 family was designed specifically for ultra-low-power, high-reliability supervision in battery-critical medical and automotive applications - emphasizing nanoamp quiescent current, wide temperature operation, and hardware-configurable timing.
FAQ
What is the factory-trimmed reset threshold voltage for MAX16056ATA23+T?
The MAX16056ATA23+T has a factory-trimmed VCC reset threshold of 2.313V (typical), with ±2.5% tolerance over the full -40°C to +125°C operating range. This value corresponds to the "23" suffix in the part number and is verified per Table 1 of the datasheet. The threshold includes 0.5% hysteresis to prevent chatter during slow VCC recovery. MAX16056ATA23+T guarantees valid RESET assertion down to VCC = 1.1V, making it suitable for deep brownout detection.
Does MAX16056ATA23+T include a watchdog timer, and how is it configured?
Yes, MAX16056ATA23+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 timeout period is 6.4ms (typ), scalable up to 819.2ms. A falling edge on WDI within the timeout period clears the timer; failure to do so triggers a reset pulse lasting tRP. MAX16056ATA23+T also provides watchdog disable by grounding SWT.
What package type and pin count does MAX16056ATA23+T use?
MAX16056ATA23+T uses an 8-pin 3mm × 3mm TDFN-EP (Thin Dual Flat No-lead with Exposed Pad) package. Pin 1 is RESET, Pin 2 is GND, Pin 3 is SWT, Pin 4 is MR, Pin 5 is SRT, Pin 6 is WDI, Pin 7 is WDS, and Pin 8 is VCC. The exposed pad (EP) must be soldered to GND for thermal performance and EMI control, as specified in the Analog Devices package outline.
Can MAX16056ATA23+T operate from a 1.2V supply?
Yes, MAX16056ATA23+T operates from VCC = 1.1V to 5.5V. At 1.2V, it maintains full supervisory functionality including reset assertion, manual reset response, and watchdog timer operation - though the RESET output sink capability decreases below VCC = 1.8V. The device guarantees RESET validity down to VCC = 1.1V, enabling use in ultra-low-voltage energy-harvesting or coin-cell systems where MAX16056ATA23+T remains fully functional.
How is the reset timeout period set on MAX16056ATA23+T?
The reset timeout period (tRP) on MAX16056ATA23+T is set by connecting a 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 14.18ms typical tRP. Ceramic X7R capacitors are recommended for low leakage (<10nA); values from 39pF to 4.7µF are supported. MAX16056ATA23+T samples CSRT at power-up and stores the value for consistent timing.
MAX16056ATA23+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:
- 2.313V
- 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)
MAX16056ATA23+T FAQ
1.How can I place an order for MAX16056ATA23+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16056ATA23+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 MAX16056ATA23+T reliable?
The price and inventory of MAX16056ATA23+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16056ATA23+T is usually 5 days.
3.What payment methods are accepted for MAX16056ATA23+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16056ATA23+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16056ATA23+T?
MAX16056ATA23+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16056ATA23+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 MAX16056ATA23+T?
For technical support, including MAX16056ATA23+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16056ATA23+T requirements.
6.How does Aetrix verify that MAX16056ATA23+T is sourced from the original manufacturer or authorized distributors?
All MAX16056ATA23+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 MAX16056ATA23+T meets industry standards.
7.What is the process for return or replacement of MAX16056ATA23+T?
All MAX16056ATA23+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX16056ATA23+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 MAX16056ATA23+T part is unused and in its original packaging.
Return procedure for MAX16056ATA23+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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