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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Supervisors

Analog Devices Inc./Maxim Integrated DS1233D-15

Name: DS1233D-15
Brand: Analog Devices Inc./Maxim Integrated
SKU: DS1233D-15
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: DS1233D-15

Manufacturer:: Analog Devices Inc./Maxim Integrated

Category:: Supervisors

Package:: TO-226-3, TO-92-3 (TO-226AA)

Datasheet:: DS1233D-15.pdf

Description:: IC SUPERVISOR 1 CHANNEL TO92-3

Quantity:: RFQ Add To RFQ list

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Product details

Overview

DS1233D-15 from Maxim Integrated (now Analog Devices) is a precision 5V microprocessor supervisory circuit with 15% V_CC trip point (4.0–4.24 V), 350 ms reset pulse width, and internal 5 kΩ pull-up resistor. It monitors power supply integrity, asserts active-low RESET during out-of-tolerance conditions, and supports Motorola 68XXX and HC16 microprocessors in embedded control systems.

For engineers reviewing the DS1233D-15 datasheet, DS1233D-15 pinout, DS1233D-15 application, or DS1233D-15 equivalent, key selection factors include guaranteed 15% supply tolerance detection, fixed 350 ms reset timeout after power recovery, TO-92/SOT-223 package options, -40°C to +85°C operation, and compatibility with legacy 5V microcontroller reset logic.

Technical Context

The DS1233D-15 integrates a temperature-compensated voltage reference and comparator to detect V_CC falling below 4.0–4.24 V (15% under 5 V). It generates an active-low RESET signal with 250–450 ms minimum assertion time after power recovery, ensuring stable processor initialization.

Its internal 5 kΩ pull-up resistor eliminates external components for open-drain reset line termination, and it operates across full industrial temperature range (-40°C to +85°C) with 50 µA typical quiescent current - optimized for low-power 5V embedded systems requiring deterministic power-on reset behavior.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Trip Point	4.0–4.24 V (15% under nominal 5 V); ensures reliable reset activation before 5V rail collapse affects MCU operation
Reset Pulse Width	250–450 ms (typ. 350 ms); guarantees sufficient stabilization time for 5V microprocessor power-up sequencing
Supply Voltage Range	1.2–5.5 V; supports operation down to brown-out threshold while maintaining functional reset assertion
Output Drive	8 mA sink capability at 0.4 V; directly interfaces with standard TTL/CMOS reset inputs without external buffer
Internal Pull-Up	3.75–6.25 kΩ; eliminates need for external pull-up resistor on RESET line in most 5V designs
Operating Temp	-40°C to +85°C; qualified for industrial-grade embedded applications without derating
Quiescent Current	50 µA max; enables use in battery-backed or low-power always-on monitoring circuits

Pinout & Package

DS1233D-15 is available in TO-92 (3-pin) and SOT-223 (4-pin) packages. The SOT-223 variant includes an additional ground pin (Pin 4) for improved thermal and noise performance.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1 (TO-92) / Pin 1 (SOT-223)	GROUND	Primary return path for internal reference and comparator; must be connected to system ground plane
Pin 2 (TO-92) / Pin 2 (SOT-223)	RESET	Open-drain active-low output; sinks current when V_CC is out-of-tolerance or during power-up delay
Pin 3 (TO-92) / Pin 3 (SOT-223)	V_CC	Power supply input; monitored rail for 15% undervoltage detection; also powers internal circuitry
Pin 4 (SOT-223 only)	GROUND	Secondary ground terminal; improves thermal dissipation and reduces ground bounce in high-noise environments

Key Features

Feature	Design Value
Precision 15% V_CC monitoring	Guaranteed 4.0–4.24 V trip window enables robust brown-out detection for 5V systems without calibration
Fixed 350 ms reset timeout	Eliminates need for external RC timing network; ensures consistent MCU reset duration across temperature and voltage
Integrated 5 kΩ pull-up resistor	Reduces BOM count by one component and simplifies layout for single-supply 5V reset networks
Motorola 68XXX/HC16 compatibility	Meets timing and drive requirements of legacy 5V microcontrollers used in industrial controllers and instrumentation
Industrial temperature range	Validated operation from -40°C to +85°C supports deployment in uncontrolled environmental enclosures

Applications

Industrial PLC Controller	Legacy 5V Data Acquisition System
Use Scenario: Power interruption in factory-floor programmable logic controllers causes erratic I/O state transitions during brown-out. IC Role / Device Role / Timing Role: DS1233D-15 monitors 5V supply and forces hard reset before MCU enters undefined state, with 350 ms hold time to ensure clean restart. Use Value: Prevents corrupted ladder logic execution and I/O latch-up by guaranteeing reset assertion until 5V rail stabilizes post-interruption.	Use Scenario: Older 5V data loggers using HC16 or 68000-series processors require deterministic power-on reset timing. IC Role / Device Role / Timing Role: DS1233D-15 provides precise 15% undervoltage detection and fixed 350 ms reset pulse synchronized to 5V rail recovery. Use Value: Eliminates boot failures caused by marginal 5V supplies, improving field reliability without redesigning reset circuitry.
Embedded Motor Drive Control	Point-of-Sale Terminal Power Management
Use Scenario: Voltage sag during motor commutation triggers spurious MCU resets or lockups in 5V control boards. IC Role / Device Role / Timing Role: DS1233D-15 detects 5V droop below 4.0 V and holds RESET active for ≥250 ms, preventing partial firmware execution. Use Value: Maintains safe shutdown state during transient sags, avoiding unintended gate driver activation or position encoder errors.	Use Scenario: Retail terminals powered from shared 5V wall adapters experience intermittent undervoltage during peripheral hot-plug events. IC Role / Device Role / Timing Role: DS1233D-15 asserts RESET within 100 ns of V_CC crossing 4.0 V threshold and sustains it for 350 ms after recovery. Use Value: Ensures transaction integrity by blocking application startup until 5V rail remains stable for full reset timeout period.

Industrial PLC Controller

Legacy 5V Data Acquisition System

Use Scenario: Power interruption in factory-floor programmable logic controllers causes erratic I/O state transitions during brown-out.

IC Role / Device Role / Timing Role: DS1233D-15 monitors 5V supply and forces hard reset before MCU enters undefined state, with 350 ms hold time to ensure clean restart.

Use Value: Prevents corrupted ladder logic execution and I/O latch-up by guaranteeing reset assertion until 5V rail stabilizes post-interruption.

Use Scenario: Older 5V data loggers using HC16 or 68000-series processors require deterministic power-on reset timing.

IC Role / Device Role / Timing Role: DS1233D-15 provides precise 15% undervoltage detection and fixed 350 ms reset pulse synchronized to 5V rail recovery.

Use Value: Eliminates boot failures caused by marginal 5V supplies, improving field reliability without redesigning reset circuitry.

Embedded Motor Drive Control

Point-of-Sale Terminal Power Management

Use Scenario: Voltage sag during motor commutation triggers spurious MCU resets or lockups in 5V control boards.

IC Role / Device Role / Timing Role: DS1233D-15 detects 5V droop below 4.0 V and holds RESET active for ≥250 ms, preventing partial firmware execution.

Use Value: Maintains safe shutdown state during transient sags, avoiding unintended gate driver activation or position encoder errors.

Use Scenario: Retail terminals powered from shared 5V wall adapters experience intermittent undervoltage during peripheral hot-plug events.

IC Role / Device Role / Timing Role: DS1233D-15 asserts RESET within 100 ns of V_CC crossing 4.0 V threshold and sustains it for 350 ms after recovery.

Use Value: Ensures transaction integrity by blocking application startup until 5V rail remains stable for full reset timeout period.

Equivalent & Alternatives

The following parts are listed as comparable options for similar microprocessor supervisory applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MAX692AESA+	Higher accuracy (±1.5% trip), 200 ms reset timeout, no internal pull-up resistor	Requires external pull-up; suited for precision 5V systems needing tighter trip tolerance	Choose when 4.425–4.575 V trip window and faster reset release are required
TPS3808G15DBVR	Adjustable trip via external resistor; 200 ms min reset time; 1.8–6 V input range	Supports multi-rail systems; lacks integrated pull-up; requires external timing components	Prefer for flexible 5V supervision where adjustable threshold or extended voltage range is needed

Compared with MAX692AESA+ and TPS3808G15DBVR, the DS1233D-15 offers fixed 15% trip point and built-in pull-up - reducing component count and simplifying layout for cost-sensitive 5V legacy designs, though with looser trip accuracy and longer reset hold time.

Availability

DS1233D-15 is available at Aetrix Electronics and suitable for industrial PLC controllers, legacy 5V data acquisition systems, embedded motor drive control, and point-of-sale terminal power management requiring stable component supply and long-term obsolescence support.

Supply support for DS1233D-15 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 (via acquisition of Maxim Integrated) designs precision analog, mixed-signal, and power management ICs for industrial, automotive, and communications applications.

The DS1233D-15 belongs to Maxim's EconoReset family - engineered specifically for cost-effective, reliable power-on and brown-out reset generation in 5V microprocessor systems with minimal external components.

FAQ

What is the exact V_CC trip point range for DS1233D-15?

The DS1233D-15 has a guaranteed V_CC trip point range of 4.0 V to 4.24 V at +25°C, corresponding to 15% undervoltage detection relative to a nominal 5V supply. This range is validated across the full -40°C to +85°C operating temperature range per the device's DC electrical characteristics table.

Does DS1233D-15 require an external pull-up resistor on the RESET pin?

No, DS1233D-15 includes an internal pull-up resistor of 3.75–6.25 kΩ, eliminating the need for an external component on the open-drain RESET output. This simplifies design and reduces BOM count in standard 5V microcontroller reset circuits.

How long is the reset pulse asserted after V_CC returns to tolerance?

The DS1233D-15 asserts the active-low RESET signal for a minimum of 250 ms and up to 450 ms (typical 350 ms) after V_CC rises above the 4.0–4.24 V trip threshold. This fixed timeout ensures sufficient stabilization time for 5V microprocessors and associated peripherals before release.

Which microprocessor families is DS1233D-15 explicitly compatible with?

DS1233D-15 is documented as compatible with Motorola 68XXX series and HC16 microprocessors. Its timing parameters, drive strength (8 mA sink), and 5V supply monitoring align with the reset interface requirements of these legacy 5V controller families.

Can DS1233D-15 be used in both TO-92 and SOT-223 packages interchangeably?

While electrically identical, DS1233D-15 in TO-92 (3-pin) and SOT-223 (4-pin) packages differ in pin count and thermal characteristics. The SOT-223 variant adds a second ground pin (Pin 4) for improved thermal performance and noise immunity - PCB layout and footprint must match the selected package variant.

DS1233D-15 Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc./Maxim Integrated

Series:: EconoReset

Package/Case:: TO-226-3, TO-92-3 (TO-226AA)

Packaging:: Bulk

Product Status:: Obsolete

Programmable:: Not Verified

Type:: Simple Reset/Power-On Reset

Number of Voltages Monitored:: 1

Voltage - Threshold:: 4.125V

Output:: Open Drain or Open Collector

Reset:: Active Low

Reset Timeout:: 250ms Minimum

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-92-3

DS1233D-15 FAQ

1.How can I place an order for DS1233D-15 through Aetrix?

Please submit a Request for Quotation (RFQ) for DS1233D-15 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 DS1233D-15 reliable?

The price and inventory of DS1233D-15 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS1233D-15 is usually 5 days.

3.What payment methods are accepted for DS1233D-15?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1233D-15 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DS1233D-15?

DS1233D-15 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DS1233D-15 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 DS1233D-15?

For technical support, including DS1233D-15 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1233D-15 requirements.

6.How does Aetrix verify that DS1233D-15 is sourced from the original manufacturer or authorized distributors?

All DS1233D-15 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 DS1233D-15 meets industry standards.

7.What is the process for return or replacement of DS1233D-15?

All DS1233D-15 units undergo pre-shipment inspection (PSI). If there is an issue with DS1233D-15, 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 DS1233D-15 part is unused and in its original packaging.

Return procedure for DS1233D-15:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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