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Diodes Incorporated AZ810NRTR-G1
- Part No.:
- AZ810NRTR-G1
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AZ810NRTR-G1.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:4,541
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Product details
Overview
AZ810NRTR-G1 from BCD Semiconductor Manufacturing Limited is a 3-pin active-high microprocessor supervisory reset IC designed to monitor VCC supply voltage (3.0V/3.3V/5.0V) and assert a reset signal during power-up, power-down, or brown-out events. It features a factory-programmed 3.08V detection threshold (T-grade), 240ms typical reset timeout, 8μA typical supply current at 3.3V, and operates across –40°C to +105°C in SOT-23 package - used in battery-powered handheld devices requiring reliable power-on initialization.
For engineers reviewing the AZ810NRTR-G1 datasheet, AZ810NRTR-G1 pinout, AZ810NRTR-G1 application, or AZ810NRTR-G1 equivalent, key selection criteria include reset polarity (active-high), temperature-stable trip voltage (±0.003%/°C), minimum 140ms reset pulse width, low quiescent current for portable systems, and compatibility with legacy MAX810-based designs.
Technical Context
The AZ810NRTR-G1 implements an internal bandgap reference, precision comparator, and monostable timer to generate a deterministic reset pulse. Its reset assertion logic triggers when VCC falls below the 3.08V threshold (T-grade), and the 240ms timeout begins only after VCC rises above that threshold - ensuring clean release timing independent of supply ramp rate.
It requires no external components, supports full industrial temperature operation (–40°C to +105°C), and delivers rail-to-rail output drive capability: VOH ≥ 0.8×VCC at 150μA load and VOL ≤ 0.3V at 1.2mA sink - enabling direct interface with 3.3V and 5V logic families without level-shifting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Detect Voltage | 3.08V ±3% at 25°C; stable over temperature (±0.003%/°C) for accurate 3.3V supply monitoring |
| Reset Timeout | 240ms typical; ensures sufficient processor initialization time after power stabilization |
| Supply Current | 8μA typical at 3.3V/25°C; enables multi-year battery life in always-on embedded systems |
| Operating Temp | –40°C to +105°C; qualified for automotive cabin and industrial control environments |
| Output Polarity | Active-high RESET; directly drives enable inputs of PMICs, FPGAs, and microcontrollers requiring high-true reset |
| Package | SOT-23; 3-pin surface-mount footprint compatible with high-density PCB layouts and automated assembly |
Pinout & Package
SOT-23 package: 3-pin, small-outline transistor outline with gull-wing leads; 2.3mm × 2.5mm body size, 0.95mm height, 1.9mm lead-to-lead spacing; RoHS-compliant green molding compound (G1 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground reference | Return path for internal reference and output stage; must be connected to system ground plane for stable threshold accuracy |
| 2 (RESET) | Active-high reset output | Open-drain-compatible output; pulled high externally or driven high internally to signal valid VCC condition |
| 3 (VCC) | Power supply input | Monitored supply rail (1.2V–5.5V); powers internal circuitry and defines reset threshold scaling |
Key Features
| Feature | Design Value |
|---|---|
| Precision voltage detection | 3.08V threshold with ±3% tolerance at 25°C and ±0.003%/°C drift - eliminates need for external resistor divider calibration |
| No external components required | Self-contained supervision function - reduces BOM count, PCB area, and design validation effort |
| Guaranteed reset pulse width | Minimum 140ms pulse ensures reliable CPU/MCU boot sequence completion even under marginal supply conditions |
| Low-power operation | 8μA typical ICC at 3.3V enables integration into energy-harvesting and coin-cell-powered IoT endpoints |
Applications
| Battery-Powered Handheld Devices | Industrial Embedded Controllers |
|---|---|
Use Scenario: Power management in PDAs and barcode scanners where battery voltage sags during RF transmission or display backlight activation. IC Role / Device Role / Timing Role: Supervisory reset generator asserting active-high RESET to hold MCU in reset until stable 3.3V rail is confirmed. Use Value: Prevents erratic firmware execution during brown-out by enforcing 240ms minimum reset hold time after VCC recovery. | Use Scenario: PLC I/O modules operating in factory environments with wide ambient temperature swings (–40°C to +85°C). IC Role / Device Role / Timing Role: Primary power-on reset source for ARM Cortex-M7 microcontroller, interfacing directly with its nRESET pin via pull-up resistor. Use Value: Ensures deterministic boot behavior across full industrial temperature range without external hysteresis or timing components. |
| Wireless Communication Modules | Intelligent Test Instruments |
Use Scenario: LTE modem subsystems experiencing rapid VCC transients during transmit burst mode. IC Role / Device Role / Timing Role: Monitors 3.3V LDO output feeding baseband processor; asserts RESET on sub-threshold dips lasting >20μs. Use Value: Eliminates false resets caused by fast supply noise while guaranteeing reset assertion for sustained undervoltage events. | Use Scenario: Portable multimeters with auto-ranging ADCs and LCD displays powered from dual AA cells. IC Role / Device Role / Timing Role: Resets microcontroller when battery voltage drops below 3.08V, preventing corrupted measurement data storage. Use Value: Matches nominal 3.3V system rail with 3.08V threshold to maximize usable battery capacity before shutdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX810LUR+T | 3.00V threshold (±2.5%), 140ms min timeout, 1.6μA ICC, SOT-23 | Lower threshold tolerance and tighter current spec; optimized for ultra-low-power wearables | Select when <2μA supply current is mandatory and 3.00V trip point aligns with system margin requirements |
| TPS3808G33DBVR | 3.3V threshold (±0.5%), adjustable delay (0–10s), 12μA ICC, SOT-23 | Programmable timeout and higher accuracy; requires external capacitor for delay setting | Choose when extended reset duration or tighter voltage tolerance is needed, accepting added component count |
Compared with MAX810LUR+T and TPS3808G33DBVR, the AZ810NRTR-G1 offers balanced performance: tighter temperature coefficient (±0.003%/°C vs. ±0.005%/°C), lower cost, and drop-in compatibility with existing MAX810 footprints - ideal for cost-sensitive industrial and consumer designs requiring proven reliability.
Availability
AZ810NRTR-G1 is available at Aetrix Electronics and suitable for battery-operated handheld equipment, industrial embedded controllers, wireless communication modules, and intelligent test instruments requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AZ810NRTR-G1 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
BCD Semiconductor Manufacturing Limited is a Shanghai-based analog and mixed-signal IC designer and foundry partner specializing in power management, protection, and supervisory solutions for industrial, automotive, and consumer markets.
The AZ809/AZ810 series belongs to BCD's microprocessor supervisory product line, engineered specifically for low-cost, high-reliability power-on reset in space-constrained portable and embedded systems - emphasizing minimal external components, wide temperature operation, and direct MAX809/MAX810 replacement capability.
FAQ
What is the exact reset threshold voltage for AZ810NRTR-G1?
The AZ810NRTR-G1 is a T-grade device with a nominal reset threshold of 3.08V, specified as 3.04V to 3.11V at 25°C and 3.00V to 3.15V over –40°C to +85°C. This matches standard 3.3V supply rails with adequate margin for brown-out detection before functional failure.
Does AZ810NRTR-G1 require an external pull-up resistor on the RESET pin?
Yes - the RESET pin is open-drain. An external pull-up resistor (typically 10kΩ to VCC) is required to establish a defined logic-high state when the output is inactive. The datasheet confirms VOH is specified under ISOURCE conditions, confirming internal pull-up is not provided.
Can AZ810NRTR-G1 monitor a 5.0V supply?
No - the NRTR-G1 variant is T-grade (3.08V threshold), optimized for 3.3V systems. For 5.0V monitoring, select the L-grade version (AZ810LRTR-G1) with 4.63V threshold. The device supports VCC up to 5.5V, but detection accuracy is guaranteed only at its factory-programmed voltage grade.
How does the reset timeout behave if VCC drops again during the 240ms period?
If VCC falls below the threshold again during the 240ms timeout, the timer resets and restarts from zero. The output remains asserted continuously until VCC stays above the threshold for a full timeout period - preventing premature release during unstable supply conditions.
AZ810NRTR-G1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.63V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
AZ810NRTR-G1 FAQ
1.How can I place an order for AZ810NRTR-G1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AZ810NRTR-G1 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 AZ810NRTR-G1 reliable?
The price and inventory of AZ810NRTR-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AZ810NRTR-G1 is usually 5 days.
3.What payment methods are accepted for AZ810NRTR-G1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AZ810NRTR-G1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AZ810NRTR-G1?
AZ810NRTR-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AZ810NRTR-G1 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 AZ810NRTR-G1?
For technical support, including AZ810NRTR-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AZ810NRTR-G1 requirements.
6.How does Aetrix verify that AZ810NRTR-G1 is sourced from the original manufacturer or authorized distributors?
All AZ810NRTR-G1 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 AZ810NRTR-G1 meets industry standards.
7.What is the process for return or replacement of AZ810NRTR-G1?
All AZ810NRTR-G1 units undergo pre-shipment inspection (PSI). If there is an issue with AZ810NRTR-G1, 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 AZ810NRTR-G1 part is unused and in its original packaging.
Return procedure for AZ810NRTR-G1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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