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Analog Devices Inc. ADM1232ARM-REEL7
- Part No.:
- ADM1232ARM-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ADM1232ARM-REEL7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,247
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Product details
Overview
ADM1232ARM-REEL7 from Analog Devices is a 5 V microprocessor supervisory circuit in an 8-lead MSOP package, featuring adjustable voltage monitoring (4.5 V or 4.75 V trip), selectable 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 watchdog strobe, and supports manual reset in embedded control systems.
For engineers reviewing the ADM1232ARM-REEL7 datasheet, ADM1232ARM-REEL7 pinout, ADM1232ARM-REEL7 application, or ADM1232ARM-REEL7 equivalent, key selection criteria include VCC trip point tolerance selection (5% or 10%), STROBE timeout configuration via TD pin, dual-reset output drive capability, thermal resistance (θJA = 206°C/W), and compatibility with MAX1232 and DS1232LP in MSOP footprint.
Technical Context
The ADM1232ARM-REEL7 integrates a precision voltage monitor, a programmable watchdog timer with three timeout options set by TD pin logic state, and a debounced PB RESET input. Its dual-reset architecture provides both active-high push-pull RESET and open-drain RESET for flexible system-level reset signaling.
It operates without external components, uses internal reference generation for VCC monitoring, and asserts reset on power-up, VCC drop below trip threshold, PB RESET activation, or STROBE timeout - all with guaranteed timing behavior across industrial temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Trip Point | 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 = 0 V), 600 ms (TD = floating), or 1.2 s (TD = VCC); enables flexible watchdog window tuning. |
| RESET Active Time | 250–1000 ms; ensures reliable processor initialization after power-on or fault recovery. |
| Power Supply Current | 20–50 μA (CMOS levels); ultra-low quiescent current preserves battery life in portable systems. |
| Operating Temperature | −40°C to +85°C; qualified for industrial and automotive under-hood environments. |
| Package Thermal Resistance | θJA = 206°C/W (RM-8); critical for thermal design in high-density PCB layouts. |
| Reset Output Drive | RESET sources/sinks 8–10 mA; RESET sinks up to 12 mA (open-drain); supports direct interface to diverse logic families. |
Pinout & Package
The ADM1232ARM-REEL7 is housed in an 8-lead Mini Small Outline Package (MSOP, RM-8), measuring 3.0 mm × 3.0 mm × 0.85 mm, with exposed pad for thermal enhancement and JEDEC MO-187-AA compliance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 PB RESET | Debounced manual reset input | Guaranteed response to ≥20 ms low pulse; ignores glitches <1 ms; enables hardware-initiated system recovery. |
| 2 TD | Strobe timeout select | Configures watchdog window: 0 V → 150 ms, floating → 600 ms, VCC → 1.2 s; no external RC required. |
| 3 TOLERANCE | Voltage monitor sensitivity control | GND → 5% trip (4.75 V), VCC → 10% trip (4.5 V); sets reset threshold without trimming resistors. |
| 4 GND | Ground reference | 0 V return for all analog and digital functions; must be low-impedance for noise immunity. |
| 5 RESET | Active-high reset output | Push-pull CMOS output; drives high/low directly; eliminates need for external pull-up in most MCU interfaces. |
| 6 RESET | Active-low open-drain output | Sinks current only; requires external pull-up; enables wired-OR reset bus or level translation. |
| 7 STROBE | Watchdog activity input | Monitors microprocessor heartbeat; reset asserted if no high-to-low transition occurs within TD-set timeout. |
| 8 VCC | Power supply input | 5 V ±10% supply; powers internal comparators, timers, and output drivers; includes brown-out detection. |
Key Features
| Feature | Design Value |
|---|---|
| Pin-compatible supervision | Direct replacement for MAX1232 and DS1232LP in RM-8 footprint; simplifies second-source qualification. |
| No external components | Eliminates external timing capacitors, pull-ups, or voltage dividers-reduces BOM count and board area. |
| Adjustable VCC monitor | Two factory-trimmed trip points (4.5 V/4.75 V) selected by single pin; avoids recalibration during design reuse. |
| Dual reset outputs | Simultaneous active-high push-pull and active-low open-drain outputs enable mixed-logic system integration. |
| Industrial temperature range | −40°C to +85°C operation verified per AEC-Q200 stress profiles; suitable for engine control and industrial PLCs. |
Applications
| Industrial PLCs | Automotive Engine Control Units |
|---|---|
Use Scenario: Monitoring 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, brown-out detection, and watchdog timeout for ARM Cortex-M based controller. Use Value: Prevents erratic operation during line transients or undervoltage events; TD pin allows field-tunable watchdog window to match firmware execution cycles. | Use Scenario: Ensuring safe startup and runtime integrity of microcontrollers in engine management systems operating near combustion chambers. IC Role / Device Role / Timing Role: Voltage supervisor and hardware watchdog enforcing fail-safe reset when ECU software hangs or supply sags during cranking. Use Value: TOLERANCE pin set to GND enables 4.75 V trip point for tighter regulation margin; −40°C to +85°C rating matches under-hood thermal envelope. |
| Medical Diagnostic Handhelds | Network Edge Routers |
Use Scenario: Power sequencing and lockup protection in battery-powered ultrasound or glucose meter devices with ARM-based SoCs. IC Role / Device Role / Timing Role: Dual-output reset generator coordinating SoC, ADC, and display controller power-up sequence and runtime supervision. Use Value: Ultra-low 20 μA supply current extends battery life; PB RESET pin enables user-initiated recalibration reset without firmware intervention. | Use Scenario: Ensuring deterministic boot and continuous operation of MIPS-based network processors in carrier-grade access routers. IC Role / Device Role / Timing Role: System-level watchdog and supply monitor interfacing with FPGA-configurable reset tree and hot-swap controllers. Use Value: RESET output drives FPGA I/O bank directly; RESET output connects to shared reset bus with other peripherals via pull-up resistor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX1232EPA+ | Same 8-pin PDIP package (N-8); higher θJA (100°C/W); no MSOP option; identical functional spec. | Preferred where through-hole assembly or legacy socket compatibility is required. | Select when board layout uses PDIP footprints or reworkability is prioritized over size. |
| DS1232LPZ-10+ | SOIC_N (R-8) package; 153°C/W θJA; same 4.5 V trip; slightly longer min. RESET active time (300 ms vs. 250 ms). | Better thermal performance than MSOP in constrained airflow; suited for fanless enclosures. | Choose for narrow SOIC layouts needing lower thermal resistance than RM-8, with minor timing trade-off. |
Compared with MAX1232EPA+ and DS1232LPZ-10+, the ADM1232ARM-REEL7 offers the smallest footprint (RM-8), highest thermal resistance (206°C/W), and identical core functionality-making it optimal for space-constrained industrial modules where surface-mount density outweighs thermal margin requirements.
Availability
ADM1232ARM-REEL7 is available at Aetrix Electronics and suitable for industrial PLCs, automotive engine control units, medical handheld diagnostics, and network edge routers requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ADM1232ARM-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, serving industrial, automotive, communications, and healthcare markets.
The ADM1232 belongs to Analog Devices' microprocessor supervisory product line, designed specifically for robust, low-power, pin-compatible voltage monitoring and watchdog functionality in mission-critical embedded systems.
FAQ
What is the function of the TD pin on the ADM1232ARM-REEL7?
The TD pin on the ADM1232ARM-REEL7 selects the strobe timeout period: connecting TD to GND yields ~150 ms, leaving it floating yields ~600 ms, and connecting it to VCC yields ~1.2 s. This configures the maximum allowable interval between STROBE input transitions before a reset is triggered, enabling precise watchdog window tuning without external components. The ADM1232ARM-REEL7's TD pin behavior is fully specified in Table 5 of its Rev. C datasheet.
Does the ADM1232ARM-REEL7 support both 4.5 V and 4.75 V VCC trip points?
Yes, the ADM1232ARM-REEL7 supports two precision VCC trip points: 4.5 V (10% tolerance) when the TOLERANCE pin is tied to VCC, and 4.75 V (5% tolerance) when TOLERANCE is grounded. These thresholds are factory-trimmed and do not require external resistors. The ADM1232ARM-REEL7's trip point selection is confirmed in Table 1 (VCC TRIP POINT section) of its Rev. C datasheet.
Can the ADM1232ARM-REEL7 replace the MAX1232 in an existing design?
Yes, the ADM1232ARM-REEL7 is explicitly pin-compatible with the MAX1232 in the 8-lead MSOP (RM-8) package, sharing identical pinout, electrical specifications, and functional behavior. No PCB changes are required when substituting the ADM1232ARM-REEL7 for the MAX1232 in RM-8 layouts. The ADM1232ARM-REEL7 datasheet states this compatibility in the FEATURES and GENERAL DESCRIPTION sections.
What is the difference between the RESET and RESET outputs on the ADM1232ARM-REEL7?
The RESET pin is an active-high push-pull output capable of sourcing and sinking up to 10 mA, while RESET is an active-low open-drain output that sinks up to 12 mA and requires an external pull-up resistor. This dual-output architecture allows the ADM1232ARM-REEL7 to interface directly with CMOS inputs (via RESET) and wired-OR reset buses (via RESET). The ADM1232ARM-REEL7's output characteristics are detailed in the "RESET AND RESET OUTPUTS" section of its Rev. C datasheet.
Is the ADM1232ARM-REEL7 RoHS compliant?
No, the ADM1232ARM-REEL7 is not RoHS compliant; it is a leaded device. RoHS-compliant variants are designated with a "Z" suffix (e.g., ADM1232ARMZ-REEL7). The ordering guide on page 9 of the ADM1232 Rev. C datasheet distinguishes non-RoHS (ADM1232ARM-REEL7) from RoHS-compliant (ADM1232ARMZ-REEL7) versions by branding code and part number suffix.
ADM1232ARM-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm 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:
- 8-MSOP
ADM1232ARM-REEL7 FAQ
1.How can I place an order for ADM1232ARM-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM1232ARM-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 ADM1232ARM-REEL7 reliable?
The price and inventory of ADM1232ARM-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM1232ARM-REEL7 is usually 5 days.
3.What payment methods are accepted for ADM1232ARM-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM1232ARM-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM1232ARM-REEL7?
ADM1232ARM-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM1232ARM-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 ADM1232ARM-REEL7?
For technical support, including ADM1232ARM-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM1232ARM-REEL7 requirements.
6.How does Aetrix verify that ADM1232ARM-REEL7 is sourced from the original manufacturer or authorized distributors?
All ADM1232ARM-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 ADM1232ARM-REEL7 meets industry standards.
7.What is the process for return or replacement of ADM1232ARM-REEL7?
All ADM1232ARM-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM1232ARM-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 ADM1232ARM-REEL7 part is unused and in its original packaging.
Return procedure for ADM1232ARM-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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