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Analog Devices Inc. ADM1232ARW-REEL7
- Part No.:
- ADM1232ARW-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ADM1232ARW-REEL7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,935
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Product details
Overview
ADM1232ARW-REEL7 from Analog Devices is a 5 V microprocessor supervisory circuit in a 16-lead SOIC_W (RW-16) package, featuring adjustable voltage trip points (4.5 V or 4.75 V), programmable strobe timeout (150 ms / 600 ms / 1.2 s), push-button reset with 20 ms debounce, and dual active-high/active-low RESET outputs. It monitors supply voltage integrity, detects microprocessor lockup via STROBE activity, and supports power-up reset assertion in embedded controllers.
For engineers reviewing the ADM1232ARW-REEL7 datasheet, ADM1232ARW-REEL7 pinout, ADM1232ARW-REEL7 application, or ADM1232ARW-REEL7 equivalent, key selection criteria include VCC trip tolerance selection (5% or 10%), TD-configurable watchdog timeout, open-drain RESET output drive capability, guaranteed reset timing under fast VCC fall/rise, and compatibility with industrial temperature range (−40°C to +85°C) designs.
Technical Context
The ADM1232ARW-REEL7 integrates a precision voltage monitor, a debounced push-button input, a configurable watchdog timer driven by STROBE transitions, and dual complementary reset outputs. Its TOLERANCE pin selects between 5% (4.75 V) and 10% (4.5 V) VCC trip thresholds, while TD pin state (GND/floating/VCC) sets three discrete strobe timeout windows.
RESET is a push-pull output capable of sourcing 8–10 mA and sinking −8 to −12 mA, whereas RESET is an open-drain MOSFET requiring external pull-up. The device asserts reset on VCC drop below threshold, PB RESET low ≥20 ms, or STROBE inactivity beyond TD-selected timeout - all with guaranteed propagation delays ≤1000 ms.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Trip Voltage | 4.5 V (10% tolerance) or 4.75 V (5% tolerance); selected by TOLERANCE pin connection to VCC or GND. |
| Strobe Timeout | 150 ms (TD = GND), 600 ms (TD = floating), or 1.2 s (TD = VCC); determines max STROBE inactivity before reset. |
| Reset Active Time | 250–1000 ms; ensures stable processor reset duration across temperature and supply variation. |
| Push-Button Debounce | 20 ms minimum low pulse required; rejects transients <1 ms, enabling reliable manual reset without external RC. |
| Operating Temp | −40°C to +85°C; qualified for industrial-grade embedded systems and automotive control modules. |
| Supply Current | 20–50 μA (CMOS-level inputs); ultra-low quiescent current enables use in battery-backed portable equipment. |
| RESET Output Type | Push-pull; drives high/low actively without pull-up, simplifying interface to 5 V logic families. |
| RESET Output Type | Open-drain; requires external pull-up but allows wired-OR configuration with other reset sources. |
Pinout & Package
ADM1232ARW-REEL7 is housed in a 16-lead SOIC_W (RW-16) package per JEDEC MS-013-AA, with 0.050" (1.27 mm) lead pitch, 10.10 mm × 7.50 mm body, and thermal resistance θJA = 73°C/W.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 7, 10, 12, 14, 16 | No Connect | Internally unconnected; must remain floating or tied to GND per layout best practice. |
| 2 | PB RESET | Debounced active-low manual reset input; asserts reset when held low ≥20 ms. |
| 4 | TD | Time delay select input; configures STROBE timeout period (GND/floating/VCC). |
| 6 | TOLERANCE | Voltage trip threshold selector; GND = 5% (4.75 V), VCC = 10% (4.5 V). |
| 8 | GND | 0 V reference for all analog and digital functions; requires low-impedance PCB plane. |
| 9 | RESET | Active-high push-pull reset output; drives logic-high or logic-low directly to MCU reset pin. |
| 11 | RESET | Active-low open-drain reset output; requires external pull-up for system-level reset bus sharing. |
| 13 | STROBE | Watchdog input; monitored for high-to-low transitions; inactivity beyond TD timeout triggers reset. |
| 15 | VCC | 5 V power supply input; operates over 4.5 V–5.5 V; internal bandgap reference derived from this rail. |
Key Features
| Feature | Design Value |
|---|---|
| Pin-compatible supervision | Direct replacement for MAX1232 and Dallas DS1232LP, enabling drop-in upgrade without layout change. |
| Adjustable VCC monitoring | Two factory-trimmed trip points (4.5 V or 4.75 V) selectable via single TOLERANCE pin connection. |
| Configurable watchdog timeout | Three discrete STROBE timeout options (150/600/1200 ms) set by TD pin voltage level - no external capacitor needed. |
| No external components | Full supervision functionality achieved with zero external resistors, capacitors, or diodes - reduces BOM count and board area. |
| Industrial temperature operation | Guaranteed performance from −40°C to +85°C, validated across full VCC range (4.5 V–5.5 V) and load conditions. |
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 asserting hardware reset on brownout, software hang (via STROBE), or operator-initiated restart. Use Value: Prevents corrupted I/O states during undervoltage or firmware freeze, ensuring deterministic fail-safe behavior per IEC 61508 SIL-2 requirements. |
Use Scenario: Embedded in vehicle door module controlling window lift, mirror fold, and interior lighting functions. IC Role / Device Role / Timing Role: Provides power-on reset, VCC fault detection, and watchdog supervision of microcontroller firmware execution. Use Value: Guarantees safe default state (e.g., windows stopped, mirrors folded) after battery voltage sag or ECU lockup during cold cranking. |
| Medical Infusion Pump | Point-of-Sale Terminal |
|
Use Scenario: Ensures reliable boot and runtime supervision of safety-critical infusion controller running motor drivers and pressure sensors. IC Role / Device Role / Timing Role: Dual-reset output drives both MCU reset and independent safety monitor IC; STROBE tracks main loop execution. Use Value: Meets FDA Class II device requirements for redundant reset generation and failure detection within <1 s of fault occurrence. |
Use Scenario: Used in retail kiosks and payment terminals operating continuously in unattended environments. IC Role / Device Role / Timing Role: Detects power supply instability and CPU hang during transaction processing; PB RESET enables service-mode recovery. Use Value: Eliminates need for physical power cycle during field deployment, reducing downtime and technician dispatch frequency. |
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; identical VCC trip (4.5 V/4.75 V) and strobe timeout options; lower θJA (100°C/W) limits thermal headroom in dense layouts. | Targeted at cost-sensitive, non-RoHS legacy designs; lacks RW-16 packaging option and extended temperature validation. | Select when replacing existing MAX1232-based designs with minimal layout impact and no RoHS requirement. |
| DS1232LPN+ | Pin-compatible 8-pin SOIC_N (R-8); same functional spec but higher quiescent current (200–500 μA vs. 20–50 μA); no RW-16 variant available. | Suitable for space-constrained consumer electronics where ultra-low standby current is not critical. | Choose for compact R-8 footprint where power budget permits higher sleep current and RW-16 is unavailable. |
Compared with MAX1232CPD+ and DS1232LPN+, the ADM1232ARW-REEL7 offers superior thermal performance (θJA = 73°C/W), lowest supply current, and the only wide-body SOIC option supporting high-density industrial PCB layouts - making it optimal for thermally demanding, long-life embedded systems.
Availability
ADM1232ARW-REEL7 is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, and medical infusion pumps requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ADM1232ARW-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, headquartered in Norwood, MA.
The ADM1232 belongs to Analog Devices' microprocessor supervisory product line, engineered for robust power monitoring and watchdog functionality in mission-critical industrial, automotive, and medical electronics.
FAQ
What is the function of the TD pin on the ADM1232ARW-REEL7?
The TD (Time Delay) pin on the ADM1232ARW-REEL7 selects the strobe timeout period by its voltage state: grounded (0 V) configures 150 ms, floating selects 600 ms, and tied to VCC sets 1.2 s. This determines the maximum allowable interval between high-to-low transitions on the STROBE input before the ADM1232ARW-REEL7 asserts reset - enabling flexible watchdog timing without external components.
How does the TOLERANCE pin affect the ADM1232ARW-REEL7's voltage monitoring behavior?
The TOLERANCE pin on the ADM1232ARW-REEL7 sets the VCC trip point: connecting it to GND selects a 5% tolerance (4.75 V nominal trip), while connecting it to VCC selects 10% tolerance (4.5 V nominal trip). This direct hardware configuration eliminates software calibration or external resistor dividers, ensuring precise, repeatable brownout detection aligned with system-level supply specifications for the ADM1232ARW-REEL7.
Can the ADM1232ARW-REEL7 be used with a 3.3 V microprocessor system?
No - the ADM1232ARW-REEL7 is specified exclusively for 5 V operation (VCC = 4.5 V to 5.5 V) and generates reset signals referenced to that rail. Its internal bandgap, comparators, and output drivers are optimized for 5 V logic levels. Using it with a 3.3 V microprocessor would risk incorrect reset assertion timing and potential damage due to overvoltage on RESET/RESET outputs; a dedicated 3.3 V supervisor like ADM1185 should be used instead of the ADM1232ARW-REEL7.
What is the difference between the RESET and RESET outputs of the ADM1232ARW-REEL7?
The RESET output of the ADM1232ARW-REEL7 is a push-pull driver capable of sourcing up to 10 mA and sinking up to 12 mA, allowing direct connection to a 5 V microprocessor reset pin. In contrast, RESET is an open-drain MOSFET output that sinks current only and requires an external pull-up resistor - enabling wired-OR reset bus configurations where multiple sources (e.g., power monitor, watchdog, manual switch) share a common reset line in systems using the ADM1232ARW-REEL7.
Is the ADM1232ARW-REEL7 RoHS compliant?
Yes - the ADM1232ARW-REEL7 is RoHS compliant, as confirmed by Analog Devices' ordering guide (Rev. C, Page 9), where "Z" suffix denotes RoHS compliance. The part carries lead-free terminations and meets EU Directive 2011/65/EU requirements, making it suitable for environmentally regulated industrial and medical electronics where the ADM1232ARW-REEL7 is deployed.
ADM1232ARW-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:
- Obsolete
- 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
ADM1232ARW-REEL7 FAQ
1.How can I place an order for ADM1232ARW-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM1232ARW-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 ADM1232ARW-REEL7 reliable?
The price and inventory of ADM1232ARW-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM1232ARW-REEL7 is usually 5 days.
3.What payment methods are accepted for ADM1232ARW-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM1232ARW-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM1232ARW-REEL7?
ADM1232ARW-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM1232ARW-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 ADM1232ARW-REEL7?
For technical support, including ADM1232ARW-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM1232ARW-REEL7 requirements.
6.How does Aetrix verify that ADM1232ARW-REEL7 is sourced from the original manufacturer or authorized distributors?
All ADM1232ARW-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 ADM1232ARW-REEL7 meets industry standards.
7.What is the process for return or replacement of ADM1232ARW-REEL7?
All ADM1232ARW-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM1232ARW-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 ADM1232ARW-REEL7 part is unused and in its original packaging.
Return procedure for ADM1232ARW-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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