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Analog Devices Inc. ADM1232ARWZ-REEL
- Part No.:
- ADM1232ARWZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ADM1232ARWZ-REEL.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,220
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Product details
Overview
ADM1232ARWZ-REEL from Analog Devices is a 5 V microprocessor supervisory circuit in a 16-lead SOIC_W (RW-16) package, featuring adjustable voltage monitoring (4.5 V or 4.75 V trip), programmable strobe timeout (150 ms / 600 ms / 1.2 s), push-button reset with 20 ms debounce, open-drain RESET and active-high RESET outputs, and operation from −40°C to +85°C. It monitors supply voltage integrity, detects microprocessor lockup via STROBE activity, and supports manual reset in embedded control systems.
For engineers reviewing the ADM1232ARWZ-REEL datasheet, ADM1232ARWZ-REEL pinout, ADM1232ARWZ-REEL application, or ADM1232ARWZ-REEL equivalent, key selection criteria include VCC trip point tolerance selection (5% or 10%), STROBE timeout configuration via TD pin, dual-reset output drive capability (sourcing/sinking vs. open-drain), thermal resistance (θJA = 73°C/W), and RoHS-compliant wide-body SOIC packaging for industrial-grade reliability.
Technical Context
The ADM1232ARWZ-REEL integrates a precision voltage monitor, watchdog timer with selectable timeout periods, and debounced push-button reset logic in a single IC. Its TOLERANCE pin selects between 5% (4.75 V) and 10% (4.5 V) VCC trip thresholds, while TD pin state (GND/floating/VCC) configures STROBE timeout at 150 ms, 600 ms, or 1.2 s respectively.
It provides two complementary reset signals: RESET (active-high, push-pull, ±10 mA drive) and RESET (active-low, open-drain, requires external pull-up). The device asserts reset on VCC undervoltage, PB RESET assertion (>20 ms low), or STROBE inactivity beyond the selected timeout - all with guaranteed timing (e.g., 50 μs VCC-fall response, 250–1000 ms power-up reset duration).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Trip Point | 4.5 V (10% tolerance) or 4.75 V (5% tolerance); set by TOLERANCE pin connection to VCC or GND. |
| STROBE Timeout | 150 ms (TD = GND), 600 ms (TD = floating), or 1.2 s (TD = VCC); enables flexible watchdog window tuning. |
| RESET Output Drive | ±10 mA push-pull; supports direct interfacing with 5 V logic without external buffering. |
| RESET Output Type | Open-drain MOSFET; requires external pull-up for level translation or wired-OR reset bus implementation. |
| Operating Temp | −40°C to +85°C; qualified for industrial and automotive under-hood environments. |
| Supply Current | 20–50 μA (CMOS levels); ultra-low quiescent current preserves battery life in portable systems. |
| Power-Up Reset | 250–1000 ms duration; ensures reliable microprocessor initialization across VCC ramp rates. |
Pinout & Package
ADM1232ARWZ-REEL is housed in a 16-lead SOIC_W (RW-16) package per JEDEC MS-013-AA, with 0.050" pitch, 7.6 mm body width, and θJA = 73°C/W. Pin 1 is marked with a notch or dot; pins 1, 3, 5, 7, 10, 12, 14, and 16 are no-connect (NC).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 7, 10, 12, 14, 16 | No Connection | Internally unconnected; must remain unpopulated or left floating on PCB. |
| 2 | PB RESET | Debounced active-low input; guarantees reset if held ≤20 ms low; immune to <1 ms glitches. |
| 4 | TD | Time delay select input; sets STROBE timeout period based on voltage state (GND/floating/VCC). |
| 6 | TOLERANCE | Voltage threshold select; GND = 5% (4.75 V), VCC = 10% (4.5 V) VCC trip point. |
| 8 | GND | 0 V reference for all analog and digital functions; must be low-impedance ground plane. |
| 9 | RESET | Active-low open-drain output; sinks current only; requires external pull-up resistor. |
| 11 | RESET | Active-high push-pull output; sources/sinks ±10 mA; directly drives TTL/CMOS inputs. |
| 13 | STROBE | Watchdog input; high-to-low transitions must occur within TD-configured timeout to prevent reset. |
| 15 | VCC | 5 V power supply input; operates over 4.5 V to 5.5 V; includes internal undervoltage detection. |
Key Features
| Feature | Design Value |
|---|---|
| Pin-compatible supervision | Direct replacement for MAX1232 and DS1232LP; identical RW-16 pinout and function mapping. |
| Adjustable voltage monitor | Selectable 4.5 V or 4.75 V trip points via single TOLERANCE pin - no external resistors required. |
| Configurable watchdog timeout | Three factory-trimmed STROBE timeout options (150/600/1200 ms) set by TD pin voltage - no capacitor needed. |
| Dual-reset output architecture | Simultaneous active-high push-pull RESET and active-low open-drain RESET enable flexible system-level reset signaling. |
| Industrial temperature range | Guaranteed operation from −40°C to +85°C with full parameter specification - suitable for harsh environments. |
Applications
| Industrial PLC Controller | Automotive Body Control Module |
|---|---|
Use Scenario: Monitors 5 V supply and CPU activity in programmable logic controllers deployed in factory automation cabinets. IC Role / Device Role / Timing Role: Supervisory circuit providing power-on reset, brownout protection, and watchdog-based lockup recovery. Use Value: Prevents erratic operation during voltage sags or firmware hangs; 20 ms PB RESET debounce eliminates false triggers from mechanical switch bounce. |
Use Scenario: Embedded in vehicle door modules to supervise microcontroller health and respond to ignition-cycle power sequencing. IC Role / Device Role / Timing Role: Voltage monitor and watchdog timer ensuring safe boot and runtime fault detection in 12 V–5 V converted systems. Use Value: 4.5 V trip point (10% tolerance) accommodates automotive battery variation; −40°C to +85°C rating meets AEC-Q200 ambient requirements. |
| Medical Infusion Pump | Network Router Management Card |
Use Scenario: Ensures fail-safe restart of safety-critical MCU in battery-powered infusion devices during low-power states. IC Role / Device Role / Timing Role: Dual-output reset generator with ultra-low 20–50 μA supply current and precise power-up timing. Use Value: RESET open-drain output interfaces with isolated reset supervisors; 1.2 s STROBE timeout allows extended sleep modes without spurious resets. |
Use Scenario: Supervises ARM-based management processor on router line cards exposed to thermal cycling and EMI. IC Role / Device Role / Timing Role: Precision voltage monitor and activity watchdog enforcing deterministic boot and runtime recovery. Use Value: 73°C/W thermal resistance enables stable operation in dense board layouts; 50 μs VCC-fall response ensures rapid fault capture. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX1232CPD+ | Same 8-pin PDIP footprint but different pinout; lacks TD pin - fixed 1.6 s watchdog timeout. | Not suitable for designs requiring configurable STROBE timeout or RW-16 packaging. | Select only if legacy PDIP layout and fixed timeout are acceptable. |
| DS1232LPN+ | Identical RW-16 pinout and function, but specified only to +70°C; higher 100 μA supply current. | Limited to commercial-temperature applications; less suitable for extended industrial environments. | Choose only when cost sensitivity outweighs temperature and power requirements. |
Compared with MAX1232CPD+ and DS1232LPN+, the ADM1232ARWZ-REEL offers field-programmable watchdog timeout, wider −40°C to +85°C operation, lower quiescent current, and RoHS compliance - making it optimal for new industrial and automotive designs requiring flexibility and long-term reliability.
Availability
ADM1232ARWZ-REEL is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, and medical infusion pumps requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for ADM1232ARWZ-REEL 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 ADM1232 belongs to Analog Devices' microprocessor supervisory product line, designed specifically to ensure robust power-on sequencing, brownout protection, and runtime watchdog supervision in 5 V embedded systems.
FAQ
What is the function of the TD pin on the ADM1232ARWZ-REEL?
The TD pin on the ADM1232ARWZ-REEL selects the STROBE watchdog timeout period: 150 ms when tied to GND, 600 ms when left floating, and 1.2 s when connected to VCC. This configuration determines the maximum allowable time between high-to-low transitions on the STROBE input before the ADM1232ARWZ-REEL asserts reset - enabling precise tuning of system activity monitoring without external components.
How does the TOLERANCE pin affect the ADM1232ARWZ-REEL's voltage monitoring behavior?
The TOLERANCE pin on the ADM1232ARWZ-REEL sets the VCC undervoltage trip threshold: connecting it to GND selects a 5% tolerance (4.75 V nominal trip), while connecting it to VCC selects a 10% tolerance (4.5 V nominal trip). This binary selection configures the internal comparator reference and directly determines the supply voltage level at which the ADM1232ARWZ-REEL initiates reset - critical for matching system rail stability requirements.
Can the ADM1232ARWZ-REEL replace the MAX1232 in an existing design?
Yes, the ADM1232ARWZ-REEL is explicitly pin-compatible with the MAX1232 in the RW-16 package, sharing identical pin assignments, electrical specifications, and functional behavior. No PCB changes are required when substituting ADM1232ARWZ-REEL for MAX1232 in designs using the 16-lead SOIC_W footprint - including identical PB RESET debounce timing, RESET/RESET drive strength, and STROBE timeout configuration logic.
What is the difference between the RESET and RESET outputs of the ADM1232ARWZ-REEL?
The ADM1232ARWZ-REEL provides two complementary reset outputs: RESET is an active-high push-pull output capable of sourcing and sinking ±10 mA, while RESET is an active-low open-drain output that sinks current only and requires an external pull-up resistor. This dual-output architecture allows the ADM1232ARWZ-REEL to interface directly with both standard logic inputs (via RESET) and wired-OR reset buses or level-shifted domains (via RESET).
Is the ADM1232ARWZ-REEL RoHS compliant?
Yes, the ADM1232ARWZ-REEL is RoHS compliant, as indicated by the "Z" suffix in its part number per Analog Devices' ordering guide. It meets EU Directive 2011/65/EU requirements, containing no lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB), or polybrominated diphenyl ethers (PBDE) above threshold limits - verified through material declarations and manufacturing process controls.
ADM1232ARWZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- Adjustable/Selectable
- Output:
- Open Drain, Push-Pull
- Reset:
- Active High/Active Low
- Reset Timeout:
- 250ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
ADM1232ARWZ-REEL FAQ
1.How can I place an order for ADM1232ARWZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM1232ARWZ-REEL 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 ADM1232ARWZ-REEL reliable?
The price and inventory of ADM1232ARWZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM1232ARWZ-REEL is usually 5 days.
3.What payment methods are accepted for ADM1232ARWZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM1232ARWZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM1232ARWZ-REEL?
ADM1232ARWZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM1232ARWZ-REEL 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 ADM1232ARWZ-REEL?
For technical support, including ADM1232ARWZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM1232ARWZ-REEL requirements.
6.How does Aetrix verify that ADM1232ARWZ-REEL is sourced from the original manufacturer or authorized distributors?
All ADM1232ARWZ-REEL 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 ADM1232ARWZ-REEL meets industry standards.
7.What is the process for return or replacement of ADM1232ARWZ-REEL?
All ADM1232ARWZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with ADM1232ARWZ-REEL, 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 ADM1232ARWZ-REEL part is unused and in its original packaging.
Return procedure for ADM1232ARWZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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