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Analog Devices Inc. ADM1232ARW-REEL
- Part No.:
- ADM1232ARW-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ADM1232ARW-REEL.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,248
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Product details
Overview
ADM1232ARW-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, detects microprocessor lockup via STROBE activity, and supports manual reset in embedded control systems.
For engineers reviewing the ADM1232ARW-REEL datasheet, ADM1232ARW-REEL pinout, ADM1232ARW-REEL application, or ADM1232ARW-REEL equivalent, key selection criteria include VCC trip point tolerance selection (5% or 10%), TD-configurable watchdog timeout, dual-reset output topology, and compatibility with MAX1232/DS1232 designs requiring robust power-on reset and brownout protection.
Technical Context
The ADM1232ARW-REEL integrates a precision voltage monitor, a debounced PB RESET input, and a configurable watchdog timer driven by the STROBE signal and TD pin state. Its reset generation logic responds to VCC falling below the selected trip threshold (4.5 V or 4.75 V), sustained absence of STROBE transitions, or assertion of PB RESET for ≥20 ms.
It provides two complementary reset outputs: RESET (active-high, push-pull capable of sourcing/sinking 8–12 mA) and RESET (open-drain, requires external pull-up). The TOLERANCE pin selects between 5% (GND) and 10% (VCC) supply tolerance, directly setting the VCC trip point without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Trip Point | 4.5 V (10% tolerance, TOLERANCE = VCC) or 4.75 V (5% tolerance, TOLERANCE = GND) - sets precise brownout detection threshold |
| Strobe Timeout | 150 ms (TD = 0 V), 600 ms (TD = floating), or 1.2 s (TD = VCC) - configures watchdog window for microprocessor activity monitoring |
| Reset Active Time | 250–1000 ms - ensures reliable processor initialization after power-up or fault recovery |
| Supply Current | 20–50 μA (CMOS levels) - enables low-power operation in battery-backed or portable systems |
| Operating Temp | −40°C to +85°C - supports industrial and automotive-grade system deployment |
| RESET Output Drive | 8–10 mA source / −8 to −12 mA sink - drives standard logic loads without buffering |
| RESET Output Type | Open-drain MOSFET - allows wired-OR configuration and level translation with external pull-up |
Pinout & Package
The ADM1232ARW-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 exposed pad not present. Pin 1 is marked by a beveled corner; pins are numbered counterclockwise from top-left.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 7, 10, 12, 14, 16 | No Connect | Internally unconnected; must remain floating or grounded per layout best practice - no electrical function |
| 2 | PB RESET Input | Debounced active-low manual reset input; guarantees reset assertion only if held low ≥20 ms |
| 4 | TD (Time Delay Set) | Selects strobe timeout period: 0 V → 150 ms, floating → 600 ms, VCC → 1.2 s |
| 6 | TOLERANCE Input | Selects VCC trip point: GND → 4.75 V (5%), VCC → 4.5 V (10%) |
| 8 | GND | 0 V reference for all analog and digital circuitry; must be low-impedance connection |
| 9 | RESET Output | Active-high push-pull output; sources/sinks up to 10 mA; asserts during power-up, brownout, or watchdog timeout |
| 11 | RESET Output | Active-low open-drain output; requires external pull-up; complements RESET for mixed-logic interface |
| 13 | STROBE Input | Watchdog trigger input; reset asserted if no high-to-low transition occurs within TD-selected timeout window |
| 15 | VCC | 5 V power supply input; powers internal comparators, timers, and output drivers |
Key Features
| Feature | Design Value |
|---|---|
| Pin-compatible supervision | Direct replacement for MAX1232 and DS1232LP in existing layouts - same RW-16 pinout and function mapping |
| Adjustable voltage monitor | Two factory-trimmed trip points (4.5 V or 4.75 V) selected by single TOLERANCE pin - eliminates external resistor dividers |
| Configurable watchdog timeout | Three discrete timeout options (150/600/1200 ms) set by TD pin voltage - no external capacitor required |
| Debounced manual reset | Internal 20 ms debounce on PB RESET - prevents false resets from mechanical switch bounce or noise |
| Dual-reset output architecture | Simultaneous active-high push-pull RESET and active-low open-drain RESET - supports diverse host MCU interface requirements |
Applications
| Industrial PLC Controllers | Automotive Body Control Modules |
|---|---|
Use Scenario: Monitoring 5 V supply and CPU activity in programmable logic controllers deployed in factory automation environments. IC Role / Device Role / Timing Role: Supervisory circuit providing power-on reset, brownout detection, and watchdog timeout for ARM Cortex-M based controller. Use Value: Ensures deterministic boot sequence and automatic recovery from firmware hangs without external timing components. | Use Scenario: Power sequencing and fault recovery in vehicle door module ECUs operating across wide temperature and voltage ranges. IC Role / Device Role / Timing Role: Voltage supervisor and activity watchdog for 5 V microcontroller managing window lift, mirror fold, and lighting functions. Use Value: Guarantees safe reset under cold-crank (low-VCC) and load-dump (overvoltage) conditions while supporting ISO 16750-2 compliance. |
| Medical Infusion Pumps | Network Edge Routers |
Use Scenario: Safety-critical reset management in battery-powered infusion pumps requiring fail-safe behavior during power transitions. IC Role / Device Role / Timing Role: Dual-output supervisor ensuring both MCU and analog subsystems initialize synchronously after power-up or brownout. Use Value: Prevents partial initialization states that could cause erroneous motor actuation or dosage delivery. | Use Scenario: System-level reset coordination in fanless enterprise routers with multi-rail power supplies and thermal throttling. IC Role / Device Role / Timing Role: Centralized reset generator triggered by main 5 V rail and monitored by FPGA-driven STROBE pulses. Use Value: Eliminates need for discrete RC networks and improves reset timing accuracy over temperature vs. discrete solutions. |
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 16-pin PDIP (N-8) footprint but different package; identical functional spec and pinout mapping for RW-16-compatible designs | Preferred where through-hole assembly or legacy N-8 layout reuse is required | Select when board rework is impractical and PDIP mounting is acceptable |
| DS1232LP-5+ | 5 V fixed trip point (no TOLERANCE-selectable 4.5 V/4.75 V); identical strobe timeout options and dual-reset outputs | Suitable for cost-sensitive designs where only 4.75 V trip is needed and tolerance flexibility is unnecessary | Select when design uses only 5% tolerance and avoids BOM proliferation |
Compared with MAX1232CPD+ and DS1232LP-5+, the ADM1232ARW-REEL offers RW-16 surface-mount packaging for higher density, selectable trip voltage via TOLERANCE pin, and guaranteed −40°C to +85°C operation - making it optimal for new industrial and automotive PCB designs requiring flexibility and reliability.
Availability
ADM1232ARW-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-term lifecycle support, and RoHS-compliant packaging.
Supply support for ADM1232ARW-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 semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision measurement and control.
The ADM1232 product line delivers highly integrated, pin-compatible microprocessor supervisory circuits designed for reliable power-on reset, brownout protection, and watchdog functionality in space-constrained industrial and automotive systems.
FAQ
What is the exact VCC trip voltage for ADM1232ARW-REEL when TOLERANCE is tied to GND?
When TOLERANCE is connected to GND, the ADM1232ARW-REEL asserts reset when VCC falls below 4.75 V - corresponding to a 5% tolerance on a nominal 5 V supply. This value is factory-trimmed and specified as 4.62 V (typical) with min/max bounds of 4.5 V to 4.74 V across temperature.
Does ADM1232ARW-REEL require external components to configure its watchdog timeout?
No, ADM1232ARW-REEL does not require external components to configure its watchdog timeout. The strobe timeout period (150 ms, 600 ms, or 1.2 s) is selected solely by the voltage applied to the TD pin: 0 V, floating, or VCC respectively - eliminating capacitors or resistors.
Can ADM1232ARW-REEL drive a standard TTL input directly using its RESET output?
Yes, ADM1232ARW-REEL's RESET output can drive a standard TTL input directly: it sources up to 10 mA at VCC − 0.1 V (min), which meets TTL VIH requirements. For RESET (open-drain), an external pull-up resistor to the target logic rail is required to interface with TTL inputs.
Is ADM1232ARW-REEL RoHS compliant and what is its lead finish?
Yes, ADM1232ARW-REEL is RoHS compliant (Pb-free, halogen-free). Its RW-16 package features matte tin (Sn) lead finish per JEDEC J-STD-609, with peak reflow temperature rating of 260°C for lead-free soldering processes.
How does the PB RESET input on ADM1232ARW-REEL handle mechanical switch bounce?
The PB RESET input on ADM1232ARW-REEL includes an internal debounce circuit that ignores pulses shorter than 1 ms and guarantees reset assertion only when held low for ≥20 ms - effectively filtering typical mechanical switch bounce without external RC networks.
ADM1232ARW-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:
- 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-REEL FAQ
1.How can I place an order for ADM1232ARW-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM1232ARW-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 ADM1232ARW-REEL reliable?
The price and inventory of ADM1232ARW-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM1232ARW-REEL is usually 5 days.
3.What payment methods are accepted for ADM1232ARW-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM1232ARW-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM1232ARW-REEL?
ADM1232ARW-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM1232ARW-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 ADM1232ARW-REEL?
For technical support, including ADM1232ARW-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM1232ARW-REEL requirements.
6.How does Aetrix verify that ADM1232ARW-REEL is sourced from the original manufacturer or authorized distributors?
All ADM1232ARW-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 ADM1232ARW-REEL meets industry standards.
7.What is the process for return or replacement of ADM1232ARW-REEL?
All ADM1232ARW-REEL units undergo pre-shipment inspection (PSI). If there is an issue with ADM1232ARW-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 ADM1232ARW-REEL part is unused and in its original packaging.
Return procedure for ADM1232ARW-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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