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

Analog Devices Inc./Maxim Integrated DS1233DZ-15+

Name: DS1233DZ-15+
Brand: Analog Devices Inc./Maxim Integrated
SKU: DS1233DZ-15+
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: DS1233DZ-15+

Manufacturer:: Analog Devices Inc./Maxim Integrated

Category:: Supervisors

Package:: TO-261-4, TO-261AA

Datasheet:: DS1233DZ-15+.pdf

Description:: IC SUPERVISOR 1 CHANNEL SOT223-3

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Product details

Overview

DS1233DZ-15+ from Maxim Integrated (now Analog Devices) is a precision 5V microprocessor supervisory circuit with 15% V_CC trip point, 350 ms reset timeout, 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 DS1233DZ-15+ datasheet, DS1233DZ-15+ pinout, DS1233DZ-15+ application, or DS1233DZ-15+ equivalent, key selection criteria include V_CC trip accuracy (4.0–4.24 V), guaranteed reset pulse width (250–450 ms), operating temperature range (–40°C to +85°C), SOT-223 package compatibility, and internal pull-up integration eliminating external components.

Technical Context

The DS1233DZ-15+ implements a precision temperature-compensated voltage reference and comparator to detect V_CC drop below 4.125 V (typical), triggering an active-low RESET signal. Its internal power-fail detection logic ensures deterministic assertion before brownout.

After V_CC recovery, the device holds RESET active for 350 ms (typical) to allow system stabilization-guaranteed between 250 ms and 450 ms per AC specs. The integrated 5 kΩ pull-up resistor enables direct connection to microprocessor reset inputs without external biasing.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Trip Point	4.0–4.24 V (15% tolerance); ensures reliable reset assertion before 5V rail falls below 4.0 V
Reset Active Time	250–450 ms; guarantees sufficient hold time for microprocessor power-up sequencing
Operating Temp	–40°C to +85°C; qualified for industrial-grade embedded control environments
Internal Pull-Up	3.75–6.25 kΩ; eliminates need for external resistor on RESET line
Supply Voltage Range	1.2–5.5 V; supports operation across wide input margin including degraded V_CC
Output Low Voltage	≤0.4 V at 8 mA; ensures valid logic-low level for TTL/CMOS reset inputs

Pinout & Package

SOT-223 package (4-pin, surface-mount), thermally enhanced with exposed thermal pad; pin 4 is dedicated GROUND for improved noise immunity and thermal dissipation.

Pin/Terminal	Circuit Role	Design Meaning
PIN 1	GROUND	Primary reference return path for internal comparator and reference circuitry
PIN 2	RESET (active-low)	Open-drain output; sinks current when asserted; requires pull-up (internal or external)
PIN 3	V_CC	Power supply input; monitored for 15% undervoltage condition
PIN 4	GROUND	Dedicated second ground terminal; reduces ground bounce and improves reset timing stability

Key Features

Feature	Design Value
15% V_CC trip accuracy	Enables robust 5V system monitoring where ±15% supply variation is expected
350 ms typ. reset timeout	Meets minimum reset hold time requirements of Motorola 68XXX and HC16 families
Integrated 5 kΩ pull-up	Reduces BOM count by one resistor and simplifies PCB layout for reset net
–40°C to +85°C operation	Validated for use in industrial controllers, factory automation, and telecom edge equipment

Applications

Industrial PLC Controller	Legacy Microprocessor System
Use Scenario: Power interruption during ladder logic execution causes state corruption in programmable logic controllers. IC Role / Device Role / Timing Role: Supervisory reset generator ensuring deterministic restart after brownout or cold start. Use Value: 350 ms reset pulse prevents premature CPU release before 5V rail stabilizes and oscillator locks.	Use Scenario: Aging 68000-based test instrumentation suffers inconsistent boot behavior due to marginal V_CC ramp. IC Role / Device Role / Timing Role: Precision V_CC monitor with 4.125 V trip point and internal pull-up. Use Value: Eliminates external reset IC and discrete pull-up, reducing footprint and improving long-term reliability.
Telecom Line Card	Medical Diagnostic Module
Use Scenario: Hot-swap insertion of line cards causes transient V_CC dip triggering spurious resets. IC Role / Device Role / Timing Role: Undervoltage detector with hysteresis and guaranteed 250–450 ms reset window. Use Value: Prevents false resets during brief dips while ensuring full reset assertion during sustained undervoltage.	Use Scenario: Battery-backed diagnostic subsystem must maintain data integrity during AC power loss. IC Role / Device Role / Timing Role: Power-fail warning and controlled reset initiator for safe shutdown sequence. Use Value: Internal temperature-compensated reference ensures consistent trip point across clinical operating temperatures.

Industrial PLC Controller

Legacy Microprocessor System

Use Scenario: Power interruption during ladder logic execution causes state corruption in programmable logic controllers.

IC Role / Device Role / Timing Role: Supervisory reset generator ensuring deterministic restart after brownout or cold start.

Use Value: 350 ms reset pulse prevents premature CPU release before 5V rail stabilizes and oscillator locks.

Use Scenario: Aging 68000-based test instrumentation suffers inconsistent boot behavior due to marginal V_CC ramp.

IC Role / Device Role / Timing Role: Precision V_CC monitor with 4.125 V trip point and internal pull-up.

Use Value: Eliminates external reset IC and discrete pull-up, reducing footprint and improving long-term reliability.

Telecom Line Card

Medical Diagnostic Module

Use Scenario: Hot-swap insertion of line cards causes transient V_CC dip triggering spurious resets.

IC Role / Device Role / Timing Role: Undervoltage detector with hysteresis and guaranteed 250–450 ms reset window.

Use Value: Prevents false resets during brief dips while ensuring full reset assertion during sustained undervoltage.

Use Scenario: Battery-backed diagnostic subsystem must maintain data integrity during AC power loss.

IC Role / Device Role / Timing Role: Power-fail warning and controlled reset initiator for safe shutdown sequence.

Use Value: Internal temperature-compensated reference ensures consistent trip point across clinical operating temperatures.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MAX691ACSA+	Higher quiescent current (15 µA vs. 50 µA), wider V_CC range (3.0–5.5 V), no internal pull-up	Supports 3.3V/5V dual-rail systems; requires external pull-up	Choose for multi-voltage designs needing tighter trip accuracy (±1.5%) and watchdog timer
TPS3808G15DBVR	Fixed 1.5% trip accuracy, 200 ms min reset timeout, 1.5 µA I_Q, SOT-23-5 package	Lower power, smaller footprint, but lacks internal pull-up and 15% trip option	Choose for ultra-low-power battery systems where 4.125 V trip is acceptable and external pull-up is feasible

Compared with MAX691ACSA+ and TPS3808G15DBVR, the DS1233DZ-15+ offers a unique combination of 15% trip tolerance, integrated pull-up, and SOT-223 thermal performance-making it optimal for cost-sensitive, industrial 5V systems requiring minimal external components and proven legacy compatibility.

Availability

DS1233DZ-15+ is available at Aetrix Electronics and suitable for industrial PLC controllers, legacy microprocessor systems, telecom line cards, and medical diagnostic modules requiring stable component supply and long-lifecycle support.

Supply support for DS1233DZ-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 high-performance analog, mixed-signal, and power management ICs for precision sensing, power integrity, and reliable system supervision.

The DS1233DZ-15+ belongs to Maxim's EconoReset™ family-engineered for cost-effective, single-function power monitoring in resource-constrained embedded systems where simplicity, thermal robustness, and legacy MCU compatibility are critical.

FAQ

What is the exact V_CC trip point range for DS1233DZ-15+?

The DS1233DZ-15+ has a guaranteed V_CC trip point range of 4.0 V to 4.24 V at +25°C, corresponding to 15% undervoltage threshold for a nominal 5V supply. This is specified in the DC Electrical Characteristics table under VCCTP3 parameter, with typical value 4.125 V. The device uses a precision temperature-compensated reference to maintain this tolerance across –40°C to +85°C.

Does DS1233DZ-15+ require an external pull-up resistor on the RESET pin?

No, DS1233DZ-15+ does not require an external pull-up resistor. It integrates an internal pull-up resistor of 3.75–6.25 kΩ between V_CC and the open-drain RESET output (PIN 2). This eliminates the need for an external component and simplifies design for systems using Motorola 68XXX or HC16 microprocessors.

What is the guaranteed minimum reset pulse width for DS1233DZ-15+?

The guaranteed minimum reset pulse width for DS1233DZ-15+ is 250 ms, with typical value 350 ms and maximum 450 ms. This is specified as tRST and tRPU in the AC Electrical Characteristics table. The timing begins when V_CC returns to in-tolerance and ensures sufficient hold time for microprocessor initialization and clock stabilization.

Which package type is used by DS1233DZ-15+?

DS1233DZ-15+ uses the SOT-223 package-a 4-pin surface-mount outline with an exposed thermal pad. Pin 4 is a dedicated GROUND terminal, distinct from TO-92 versions. This package provides superior thermal performance and board-level reliability compared to through-hole alternatives, supporting industrial temperature operation.

Is DS1233DZ-15+ compatible with 3.3V microcontrollers?

No, DS1233DZ-15+ is not designed for 3.3V microcontrollers. Its V_CC trip point is fixed at 15% below 5V (4.0–4.24 V), and its operating supply range is optimized for 5V systems. For 3.3V applications, consider DS1233A-15 or other members of the EconoReset family with 3.3V-specific trip points and tolerances.

DS1233DZ-15+ Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc./Maxim Integrated

Series:: EconoReset

Package/Case:: TO-261-4, TO-261AA

Packaging:: Tube

Product Status:: Active

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:: Surface Mount

Supplier Device Package:: SOT-223-3

DS1233DZ-15+ FAQ

1.How can I place an order for DS1233DZ-15+ through Aetrix?

Please submit a Request for Quotation (RFQ) for DS1233DZ-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 DS1233DZ-15+ reliable?

The price and inventory of DS1233DZ-15+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS1233DZ-15+ is usually 5 days.

3.What payment methods are accepted for DS1233DZ-15+?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1233DZ-15+ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DS1233DZ-15+?

DS1233DZ-15+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DS1233DZ-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 DS1233DZ-15+?

For technical support, including DS1233DZ-15+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1233DZ-15+ requirements.

6.How does Aetrix verify that DS1233DZ-15+ is sourced from the original manufacturer or authorized distributors?

All DS1233DZ-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 DS1233DZ-15+ meets industry standards.

7.What is the process for return or replacement of DS1233DZ-15+?

All DS1233DZ-15+ units undergo pre-shipment inspection (PSI). If there is an issue with DS1233DZ-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 DS1233DZ-15+ part is unused and in its original packaging.

Return procedure for DS1233DZ-15+:

1.Submit a request within 90 days.

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

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