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Analog Devices Inc. ADM6316AY29ARJZ-R7
- Part No.:
- ADM6316AY29ARJZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
ADM6316AY29ARJZ-R7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:10,026
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Product details
Overview
ADM6316AY29ARJZ-R7 from Analog Devices is a supervisory circuit with integrated watchdog timer and manual reset input in a 5-lead SOT-23 package. It monitors VCC for undervoltage conditions (reset threshold = 2.93 V), asserts an active-low push-pull RESET signal, provides 1 ms minimum reset timeout, and features 1.6 s typical watchdog timeout. It is used in microprocessor-based systems requiring reliable power-on reset and code execution integrity monitoring.
For engineers reviewing the ADM6316AY29ARJZ-R7 datasheet, ADM6316AY29ARJZ-R7 pinout, ADM6316AY29ARJZ-R7 application, or ADM6316AY29ARJZ-R7 equivalent, key selection criteria include guaranteed reset validity down to VCC = 1 V, 5 µA typical supply current, industrial temperature range (−40°C to +85°C), and compatibility with low-power portable and embedded control systems.
Technical Context
The ADM6316AY29ARJZ-R7 implements a precision voltage reference and comparator-based reset generator with hysteresis (3 mV), glitch-immune VCC detection, and a digital watchdog timer cleared by logic transitions on WDI. Its reset assertion is triggered by VCC falling below 2.93 V ±2.5%, MR low pulse ≥1 µs, or WDI inactivity exceeding 1.6 s (typical).
It features a push-pull active-low RESET output capable of sinking 1.2 mA at VCC ≥ 2.7 V and sourcing 500 µA at VCC ≥ 1.8 V, with propagation delay from VCC fall to RESET assert ≤40 µs and MR-to-RESET delay ≤230 ns at VCC = 5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.93 V ±2.5% over −40°C to +85°C - ensures reliable brownout detection for 3.3 V systems with margin. |
| Reset Timeout | 1 ms minimum - guarantees sufficient reset pulse width for microprocessor initialization after power-up. |
| Watchdog Timeout | 1.6 s typical (Y-suffix) - enables robust software fault detection without excessive system interruption. |
| Supply Current | 5 µA typical at VCC = 3.6 V - supports battery-powered and ultra-low-power portable applications. |
| Operating Voltage Range | 1 V to 5.5 V - allows valid reset assertion even during deep brownout, down to 1 V VCC. |
| Output Type | Active-low push-pull - eliminates need for external pull-up resistor and ensures defined logic levels. |
| Temperature Range | −40°C to +85°C - qualified for industrial and automotive-adjacent embedded environments. |
Pinout & Package
ADM6316AY29ARJZ-R7 is housed in a 5-lead SOT-23 (RJ-5) package per JEDEC MO-178-AA, with 1.3 mm × 2.9 mm footprint and 1.15 mm height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low push-pull reset output | Asserts logic low when VCC < 2.93 V, MR is pulled low, or watchdog times out; sinks 1.2 mA at 2.7 V. |
| 2 - GND | Ground reference | Primary return path for internal circuitry and reset output stage; must be low-impedance. |
| 3 - MR | Manual reset input (active low) | Internal 52 kΩ pull-up; accepts ≥1 µs low pulse to force reset; includes on-chip debounce. |
| 4 - WDI | Watchdog input | Clears watchdog timer on any logic transition; disabled if left floating; requires ≥50 ns pulse width. |
| 5 - VCC | Supply voltage input | Monitored rail; device operates from 1 V to 5.5 V; reset remains valid down to 1 V. |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed reset validity to VCC = 1 V | Enables fail-safe operation during severe brownout without external level-shifting circuitry. |
| Power supply glitch immunity | Rejects transients ≤100 ns (MR) and suppresses false resets from fast VCC dips via internal filtering. |
| Integrated 52 kΩ MR pull-up | Eliminates need for external pull-up resistor; ensures MR is high when unconnected or open-circuit. |
| Watchdog timer cleared by logic transitions | Supports robust software supervision using short WDI pulses, minimizing average input current. |
| Low quiescent current (5 µA typ) | Extends battery life in portable equipment and reduces thermal load in space-constrained designs. |
Applications
| Industrial PLC Controller | Portable Medical Monitor |
|---|---|
Use Scenario: Microcontroller in a DIN-rail mounted PLC experiences intermittent brownouts due to shared AC/DC power supply noise. IC Role / Device Role / Timing Role: Supervisory IC asserting active-low RESET to hold MCU in reset until VCC stabilizes above 2.93 V, with 1 ms timeout ensuring clean boot sequence. Use Value: Prevents corrupted firmware execution during unstable power-up, eliminating spurious I/O faults and communication errors. |
Use Scenario: Battery-powered ECG monitor requires guaranteed restart after low-battery shutdown and software hang detection. IC Role / Device Role / Timing Role: Provides both power-on reset and 1.6 s watchdog supervision; MR pin enables user-initiated reset via front-panel button. Use Value: Ensures clinical data integrity by forcing full system reboot upon detected software lockup or undervoltage. |
| Smart Energy Meter | Automotive Body Control Module (BCM) |
Use Scenario: Utility meter with real-time clock and metrology ASIC must survive rapid AC line interruptions and cold temperature operation. IC Role / Device Role / Timing Role: Monitors 3.3 V rail; asserts RESET during VCC dip below 2.93 V; operates across −40°C to +85°C with <40 ppm/°C threshold drift. Use Value: Maintains accurate timekeeping and tamper-resistant logging by preventing partial initialization during grid transients. |
Use Scenario: BCM microcontroller controlling door locks and lighting may freeze due to ESD-induced latch-up or CAN bus interference. IC Role / Device Role / Timing Role: Uses WDI to verify MCU firmware execution; MR pin connects to service diagnostic switch; RESET drives MCU nRST pin directly. Use Value: Enables field-serviceable recovery without disconnecting battery, improving vehicle uptime and service efficiency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6316M29D3+T | 2.93 V reset threshold, 1 ms reset timeout, but open-drain RESET output requiring external pull-up. | Lacks integrated MR pull-up; higher BOM count; less suitable for space-constrained PCBs. | Choose when existing design uses open-drain topology or requires MAXIM's qualification profile. |
| TPS3808G33DBVR | 3.3 V reset threshold (fixed), 200 ms reset timeout, no watchdog timer, 1.5 µA quiescent current. | No WDI functionality; not suitable for systems requiring code-execution supervision. | Choose only for basic power-monitoring-only use cases where watchdog is unnecessary and lower IQ is critical. |
Compared with MAX6316M29D3+T and TPS3808G33DBVR, the ADM6316AY29ARJZ-R7 uniquely combines 2.93 V precision reset, 1 ms timeout, integrated watchdog, manual reset with internal pull-up, and push-pull output - making it optimal for compact, feature-complete microprocessor supervision in industrial and portable systems.
Availability
ADM6316AY29ARJZ-R7 is available at Aetrix Electronics and suitable for industrial PLC controllers, portable medical monitors, smart energy meters, and automotive body control modules requiring stable component supply and long-term lifecycle support.
Supply support for ADM6316AY29ARJZ-R7 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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The ADM6316 series belongs to Analog Devices' precision supervisory IC product line, designed specifically for robust power-on reset, brownout protection, and software fault recovery in microprocessor-based embedded systems.
FAQ
What is the exact reset threshold voltage of the ADM6316AY29ARJZ-R7?
The ADM6316AY29ARJZ-R7 has a nominal reset threshold of 2.93 V, with tolerance of ±2.5% over the full industrial temperature range (−40°C to +85°C). At 25°C, the threshold is 2.93 V ±1.5%, and hysteresis is 3 mV - ensuring stable release behavior during VCC recovery.
Does the ADM6316AY29ARJZ-R7 require an external pull-up resistor on the RESET pin?
No. The ADM6316AY29ARJZ-R7 features a push-pull active-low RESET output, which actively drives low and high states without needing an external pull-up. This simplifies layout, reduces component count, and ensures defined logic levels across its 1 V to 5.5 V operating range.
How does the watchdog timer in the ADM6316AY29ARJZ-R7 function?
The ADM6316AY29ARJZ-R7 watchdog timer has a typical timeout of 1.6 s (Y-suffix). It is cleared on every logic transition (low-to-high or high-to-low) on the WDI pin. If no transition occurs within the timeout period, RESET is asserted. Leaving WDI floating disables the watchdog.
What is the minimum pulse width required on the MR pin to trigger reset in the ADM6316AY29ARJZ-R7?
The ADM6316AY29ARJZ-R7 requires a minimum MR low pulse width of 1 µs to initiate reset. The internal MR input includes 100 ns glitch rejection, and the MR-to-RESET propagation delay is ≤230 ns at VCC = 5 V, enabling fast, noise-immune manual reset activation.
Is the ADM6316AY29ARJZ-R7 compatible with 1.8 V microcontrollers?
Yes. The ADM6316AY29ARJZ-R7 operates from VCC = 1 V to 5.5 V and guarantees valid RESET output down to VCC = 1 V. Its push-pull output sources 150 µA at VCC ≥ 1.8 V, making it fully compatible with 1.8 V logic families when used with appropriate VCC rail monitoring.
ADM6316AY29ARJZ-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.93V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 1ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
ADM6316AY29ARJZ-R7 FAQ
1.How can I place an order for ADM6316AY29ARJZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM6316AY29ARJZ-R7 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 ADM6316AY29ARJZ-R7 reliable?
The price and inventory of ADM6316AY29ARJZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM6316AY29ARJZ-R7 is usually 5 days.
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5.How can I obtain technical support or documentation for ADM6316AY29ARJZ-R7?
For technical support, including ADM6316AY29ARJZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM6316AY29ARJZ-R7 requirements.
6.How does Aetrix verify that ADM6316AY29ARJZ-R7 is sourced from the original manufacturer or authorized distributors?
All ADM6316AY29ARJZ-R7 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 ADM6316AY29ARJZ-R7 meets industry standards.
7.What is the process for return or replacement of ADM6316AY29ARJZ-R7?
All ADM6316AY29ARJZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM6316AY29ARJZ-R7, 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 ADM6316AY29ARJZ-R7 part is unused and in its original packaging.
Return procedure for ADM6316AY29ARJZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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