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Analog Devices Inc. ADM1232ARWZ-REEL7
- Part No.:
- ADM1232ARWZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ADM1232ARWZ-REEL7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,640
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Product details
Overview
ADM1232ARWZ-REEL7 from Analog Devices is a 5 V microprocessor supervisory circuit in an 8-lead narrow SOIC (R-8) package, featuring adjustable voltage trip points (4.5 V or 4.75 V), programmable strobe timeout (150/600/1200 ms), 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, detects microprocessor lockup via STROBE activity, and supports manual reset in embedded control systems.
For engineers reviewing the ADM1232ARWZ-REEL7 datasheet, ADM1232ARWZ-REEL7 pinout, ADM1232ARWZ-REEL7 application, or ADM1232ARWZ-REEL7 equivalent, key selection criteria include VCC trip tolerance selection (5% or 10%), STROBE timeout configuration via TD pin, dual-reset output topology (push-pull RESET and open-drain RESET), guaranteed power-on reset timing (250–1000 ms), and RoHS-compliant packaging for industrial-grade reliability.
Technical Context
The ADM1232ARWZ-REEL7 integrates three core supervision functions: precision VCC monitoring with selectable 5% or 10% tolerance thresholds, watchdog timer functionality triggered by missing STROBE transitions, and debounced manual reset via PB RESET. Its internal time-base generator determines reset assertion timing based on TD pin state-0 V, floating, or VCC-enabling three distinct timeout windows without external components.
It employs dual-output architecture: RESET provides active-high CMOS/TTL-compatible sourcing/sinking capability (±10 mA), while RESET is an open-drain MOSFET requiring external pull-up. The device asserts reset during power-up, VCC drop below threshold, PB RESET activation (>20 ms low), or STROBE inactivity beyond configured timeout-ensuring deterministic system recovery across all fault conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Trip Voltage | 4.5 V (10% tolerance, TOLERANCE = VCC) or 4.75 V (5% tolerance, TOLERANCE = GND)-defines minimum supply level before reset assertion. |
| STROBE Timeout | 150 ms (TD = 0 V), 600 ms (TD = floating), or 1200 ms (TD = VCC)-configurable watchdog window for microprocessor activity monitoring. |
| RESET Active Time | 250–1000 ms-guaranteed minimum reset pulse width after power-up or fault detection, ensuring reliable processor initialization. |
| Push-Button Reset Delay | 1–20 ms debounce; 20 ms minimum low pulse required-rejects switch bounce while guaranteeing reset on sustained press. |
| Operating Temperature | −40°C to +85°C-validated performance range for industrial and automotive control environments without derating. |
| Supply Current | 20–50 μA at CMOS logic levels-ultra-low quiescent current enabling use in battery-backed or portable systems. |
| Output Drive | RESET: ±10 mA sink/source; RESET: open-drain only-supports direct interface to TTL/CMOS inputs and flexible pull-up design. |
Pinout & Package
ADM1232ARWZ-REEL7 is packaged in an 8-lead narrow SOIC (R-8), RoHS-compliant, surface-mount package with 1.27 mm pitch and JEDEC MS-012-AA compliance. Thermal resistance θJA = 153°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 PB RESET | Debounced manual reset input | Accepts logic-low or push-button signal; ignores glitches <1 ms, guarantees reset for >20 ms low pulse. |
| 2 TD | Strobe timeout select | Configures watchdog window: 0 V → 150 ms, floating → 600 ms, VCC → 1200 ms-no external RC needed. |
| 3 TOLERANCE | Voltage trip point selector | GND → 4.75 V (5% drop), VCC → 4.5 V (10% drop)-sets reset threshold without trimming resistors. |
| 4 GND | Ground reference | 0 V return for all internal circuits and I/O; must be low-impedance connection to system ground plane. |
| 5 RESET | Active-high reset output | CMOS/TTL-compatible push-pull output; sources/sinks up to 10 mA; asserts high during fault or power-up. |
| 6 RESET | Active-low open-drain reset | Requires external pull-up; sinks current only; enables wired-OR reset bus or level-shifting interfaces. |
| 7 STROBE | Watchdog activity input | Monitors high-to-low transitions; reset asserted if no edge occurs within TD-configured timeout window. |
| 8 VCC | Power supply input | 5 V ±10% nominal supply; powers internal comparators, timers, and output drivers; monitored for brownout. |
Key Features
| Feature | Design Value |
|---|---|
| Pin-compatible supervision IC | Direct replacement for MAX1232 and DS1232LP-enables drop-in upgrade without PCB changes. |
| No external components required | Internal precision voltage reference, oscillator, and debounce logic eliminate capacitors, resistors, or crystals. |
| Dual-reset output topology | Simultaneous active-high (RESET) and open-drain (RESET) outputs support diverse host processor interface requirements. |
| Configurable VCC trip tolerance | Hardware-selectable 5% or 10% threshold via single TOLERANCE pin-avoids firmware or resistor network dependency. |
| Three-strobe timeout options | Single TD pin selects 150/600/1200 ms watchdog window-matches varying processor instruction cycle times. |
Applications
| Industrial PLC Controllers | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Monitoring microcontroller health in programmable logic controllers exposed to wide temperature swings and EMI. IC Role / Device Role / Timing Role: Supervisory circuit providing power-on reset, brownout detection, and watchdog timeout for main MCU. Use Value: Ensures deterministic restart after voltage sag or software hang; 153°C/W thermal resistance supports convection-cooled enclosures. |
Use Scenario: Securing safe boot and runtime supervision of body control units managing door locks, lighting, and HVAC. IC Role / Device Role / Timing Role: Dual-output reset generator with configurable 4.5 V trip point and 600 ms strobe timeout for ASIL-B adjacent systems. Use Value: Meets automotive cold-cranking voltage drop requirements; RoHS-compliant R-8 package supports automated SMT assembly. |
| Medical Diagnostic Equipment | Network Edge Routers |
|
Use Scenario: Guaranteeing fail-safe startup and continuous operation of FPGA-based imaging subsystems in portable ultrasound devices. IC Role / Device Role / Timing Role: Voltage supervisor and watchdog timer interfacing with FPGA configuration controller and ARM Cortex-M4. Use Value: 20–50 μA supply current extends battery life; 250–1000 ms RESET active time aligns with FPGA configuration sequence. |
Use Scenario: Enabling self-recovery of packet-processing ASICs in carrier-grade routers during transient power disturbances. IC Role / Device Role / Timing Role: System-level reset coordinator asserting both active-high and open-drain signals to CPU, PHY, and memory controllers. Use Value: Open-drain RESET allows shared reset bus with other peripherals; 1200 ms timeout accommodates multi-stage bootloaders. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX1232ESA+ | Same pinout, identical functional block diagram, but uses different internal voltage reference (±1.5% vs ±1.0% for ADM1232); 100°C/W θJA in SOIC-8. | Validated for commercial temperature range only (0°C to +70°C); lacks extended industrial −40°C to +85°C rating. | Select when cost sensitivity outweighs extended temperature requirement and tighter trip accuracy is not critical. |
| DS1232LPN+ | Pin-compatible, same 8-pin SOIC package, but specifies 4.65 V nominal trip (5%) and 4.40 V (10%); higher 100 μA max supply current. | Optimized for legacy 5 V systems with looser tolerance budgets; no RoHS option available in this variant. | Choose for backward compatibility with existing DS1232LP designs where lead-free compliance is not mandated. |
Compared with MAX1232ESA+ and DS1232LPN+, the ADM1232ARWZ-REEL7 delivers tighter VCC trip accuracy (±1.0%), lower quiescent current (20 μA typ), full industrial temperature support, and RoHS compliance-all in the same R-8 footprint-making it optimal for new designs demanding reliability and regulatory alignment.
Availability
ADM1232ARWZ-REEL7 is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, and medical diagnostic equipment requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for ADM1232ARWZ-REEL7 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, serving industrial, automotive, communications, and healthcare markets since 1965.
The ADM1232 belongs to Analog Devices' microprocessor supervisory product line, engineered for deterministic power sequencing, brownout protection, and watchdog safety in resource-constrained embedded systems.
FAQ
What is the function of the TD pin on the ADM1232ARWZ-REEL7?
The TD pin on the ADM1232ARWZ-REEL7 selects the strobe timeout period: connecting TD to GND configures 150 ms, leaving it floating sets 600 ms, and tying it to VCC enables 1200 ms. This pin directly controls the maximum allowable interval between STROBE input transitions before a reset is asserted-eliminating need for external timing components. The ADM1232ARWZ-REEL7 uses this hardware-selectable timeout to adapt to varying microprocessor instruction throughput without firmware intervention.
How does the TOLERANCE pin affect the reset threshold voltage of the ADM1232ARWZ-REEL7?
The TOLERANCE pin on the ADM1232ARWZ-REEL7 sets the VCC trip point: grounding it selects a 4.75 V threshold (5% drop from 5 V), while connecting it to VCC selects 4.5 V (10% drop). This binary selection determines the supply voltage level below which the ADM1232ARWZ-REEL7 asserts RESET and RESET-providing hardware-configurable brownout protection without external resistive dividers. The ADM1232ARWZ-REEL7's specification guarantees ±1.0% accuracy over temperature for both thresholds.
Can the ADM1232ARWZ-REEL7 replace the MAX1232 in an existing design?
Yes, the ADM1232ARWZ-REEL7 is explicitly pin-compatible with the MAX1232 and shares identical functional block architecture, including PB RESET debounce timing, STROBE timeout behavior, and dual-reset output drive characteristics. The ADM1232ARWZ-REEL7 maintains the same R-8 package outline and pin assignments, allowing direct substitution without layout modification-provided the design operates within the −40°C to +85°C range and requires RoHS compliance, which the ADM1232ARWZ-REEL7 provides.
What is the difference between the RESET and RESET outputs on the ADM1232ARWZ-REEL7?
The RESET output of the ADM1232ARWZ-REEL7 is an active-high push-pull driver capable of sourcing and sinking up to 10 mA, compatible with TTL/CMOS logic inputs. In contrast, RESET is an active-low open-drain MOSFET that sinks current only and requires an external pull-up resistor. This dual-output structure allows the ADM1232ARWZ-REEL7 to interface with diverse host processors-e.g., driving a reset line directly (RESET) while enabling wired-OR reset busing (RESET) in multi-chip systems.
Does the ADM1232ARWZ-REEL7 require external components for basic operation?
No, the ADM1232ARWZ-REEL7 requires no external components for core supervision functionality: its internal voltage reference, oscillator, and debounce circuitry eliminate the need for capacitors, resistors, or crystals. Only optional external elements-such as a pull-up resistor for RESET or a push-button switch for PB RESET-are needed for specific interface configurations. The ADM1232ARWZ-REEL7 achieves full microprocessor supervision (power-on reset, brownout detection, watchdog timeout, manual reset) using only its eight pins and VCC/GND connections.
ADM1232ARWZ-REEL7 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-REEL7 FAQ
1.How can I place an order for ADM1232ARWZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM1232ARWZ-REEL7 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-REEL7 reliable?
The price and inventory of ADM1232ARWZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM1232ARWZ-REEL7 is usually 5 days.
3.What payment methods are accepted for ADM1232ARWZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM1232ARWZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM1232ARWZ-REEL7?
ADM1232ARWZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM1232ARWZ-REEL7 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-REEL7?
For technical support, including ADM1232ARWZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM1232ARWZ-REEL7 requirements.
6.How does Aetrix verify that ADM1232ARWZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All ADM1232ARWZ-REEL7 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-REEL7 meets industry standards.
7.What is the process for return or replacement of ADM1232ARWZ-REEL7?
All ADM1232ARWZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM1232ARWZ-REEL7, 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-REEL7 part is unused and in its original packaging.
Return procedure for ADM1232ARWZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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