Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

Analog Devices Inc./Maxim Integrated DS1233A-10+T&R

Name: DS1233A-10+T&R
Brand: Analog Devices Inc./Maxim Integrated
SKU: DS1233A-10+T&R
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: DS1233A-10+T&R

Manufacturer:: Analog Devices Inc./Maxim Integrated

Category:: Supervisors

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

Datasheet:: DS1233A-10+T&R.pdf

Description:: IC SUPERVISOR 1 CHANNEL TO92-3

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:6,345

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

DS1233A-10+T&R from Maxim Integrated is a 3.3V precision voltage-monitoring microprocessor reset supervisor IC with pushbutton debounce, 2.88V nominal V_CC trip point (±10%), 350ms reset timeout, and internal 5kΩ pull-up resistor. It operates from -40°C to +85°C in TO-92 or SOT-223 packages and is used in embedded microcontroller power-up sequencing and brownout recovery circuits.

For engineers reviewing the DS1233A-10+T&R datasheet, DS1233A-10+T&R pinout, DS1233A-10+T&R application, or DS1233A-10+T&R equivalent, key selection criteria include V_CC trip accuracy (2.80–2.97V), guaranteed 250–450ms reset pulse width, pushbutton release detection threshold (0.3–0.8V), low 50µA operating current, and compatibility with 3.3V logic systems requiring reliable power-fail and manual reset handling.

Technical Context

The DS1233A-10+T&R integrates a precision temperature-compensated voltage reference and comparator to monitor V_CC against a fixed 2.88V threshold (10% tolerance). It asserts an active-low RESET signal during undervoltage or power-down events and holds it for 350ms after V_CC recovers to allow system stabilization.

It also implements pushbutton reset control by detecting falling edges on the RESET pin, debouncing the switch internally, and generating a clean 350ms reset pulse upon button release - requiring only a 100pF–0.01µF capacitor between RESET and ground for proper operation.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Trip Point	2.80V to 2.97V (10% tolerance at 3.3V supply; ensures reset activation before microprocessor fails)
Reset Pulse Width	250–450ms (guaranteed minimum 250ms hold time prevents premature processor release during power recovery)
Operating Current	50µA (ultra-low quiescent current enables use in battery-backed or always-on monitoring applications)
Pushbutton Release Threshold	0.3V to 0.8V (defines valid rising-edge detection window for reliable manual reset triggering)
Internal Pull-Up Resistor	3.75kΩ to 6.25kΩ (enables direct pushbutton connection without external bias; supports open-drain RESET interface)
Temperature Range	-40°C to +85°C (industrial-grade operation suitable for uncontrolled ambient environments)

Pinout & Package

DS1233A-10+T&R is available in TO-92 (3-pin) and SOT-223 (4-pin) packages. The +T&R suffix indicates tape-and-reel packaging for automated assembly. Pin functions are identical across variants except for the additional GND pin in SOT-223.

Pin/Terminal	Circuit Role	Design Meaning
PIN 1	GROUND	Reference return path for internal comparator and reset driver; must be connected to system ground plane
PIN 2	RESET	Active-low open-drain reset output; serves as both power-fail indicator and pushbutton interface node
PIN 3	V_CC	Primary power input; supplies internal reference, comparator, and reset driver circuitry
PIN 4 (SOT-223 only)	GROUND	Secondary ground terminal for improved thermal dissipation and noise immunity in surface-mount layout

Key Features

Feature	Design Value
Integrated voltage reference & comparator	Eliminates need for external precision resistors or bandgap references in reset circuit design
Internal pushbutton debounce logic	Removes requirement for RC filters or firmware-based debouncing in manual reset paths
Fixed 350ms reset timeout	Guarantees sufficient stabilization time for 3.3V microcontrollers after power recovery or button release
Low-power 50µA operation	Enables continuous monitoring in energy-constrained systems without significant battery drain

Applications

Industrial PLC Controller	Medical Diagnostic Handheld
Use Scenario: Power cycling during field maintenance or battery replacement in programmable logic controllers. IC Role / Device Role / Timing Role: DS1233A-10+T&R monitors 3.3V supply rail and generates a clean, debounced reset pulse upon power restoration or technician-initiated reset. Use Value: Prevents corrupted firmware execution during unstable power transitions and eliminates false resets caused by mechanical switch bounce.	Use Scenario: Emergency hard reset during diagnostic mode lockup or unexpected sensor communication failure. IC Role / Device Role / Timing Role: DS1233A-10+T&R acts as a hardware-enforced reset arbiter, asserting active-low RESET for ≥250ms regardless of software state. Use Value: Ensures deterministic recovery without reliance on watchdog timers or host processor responsiveness.
Smart Energy Meter	Automotive Body Control Module
Use Scenario: Brownout detection during grid voltage sags or transformer tap switching in residential metering units. IC Role / Device Role / Timing Role: DS1233A-10+T&R continuously compares V_CC against 2.88V threshold and holds RESET active until stable 3.3V is confirmed for ≥350ms. Use Value: Avoids EEPROM write corruption and maintains accurate timekeeping during transient undervoltage events.	Use Scenario: Cold-cranking voltage dip (<2.5V) during engine start in 12V automotive systems with 3.3V MCU rails. IC Role / Device Role / Timing Role: DS1233A-10+T&R triggers immediate reset when V_CC falls below 2.80V and sustains it through crank cycle, releasing only after stable 3.3V resumes for 350ms. Use Value: Guarantees safe MCU initialization post-cranking without requiring complex analog supervision circuitry.

Industrial PLC Controller

Medical Diagnostic Handheld

Use Scenario: Power cycling during field maintenance or battery replacement in programmable logic controllers.

IC Role / Device Role / Timing Role: DS1233A-10+T&R monitors 3.3V supply rail and generates a clean, debounced reset pulse upon power restoration or technician-initiated reset.

Use Value: Prevents corrupted firmware execution during unstable power transitions and eliminates false resets caused by mechanical switch bounce.

Use Scenario: Emergency hard reset during diagnostic mode lockup or unexpected sensor communication failure.

IC Role / Device Role / Timing Role: DS1233A-10+T&R acts as a hardware-enforced reset arbiter, asserting active-low RESET for ≥250ms regardless of software state.

Use Value: Ensures deterministic recovery without reliance on watchdog timers or host processor responsiveness.

Smart Energy Meter

Automotive Body Control Module

Use Scenario: Brownout detection during grid voltage sags or transformer tap switching in residential metering units.

IC Role / Device Role / Timing Role: DS1233A-10+T&R continuously compares V_CC against 2.88V threshold and holds RESET active until stable 3.3V is confirmed for ≥350ms.

Use Value: Avoids EEPROM write corruption and maintains accurate timekeeping during transient undervoltage events.

Use Scenario: Cold-cranking voltage dip (<2.5V) during engine start in 12V automotive systems with 3.3V MCU rails.

IC Role / Device Role / Timing Role: DS1233A-10+T&R triggers immediate reset when V_CC falls below 2.80V and sustains it through crank cycle, releasing only after stable 3.3V resumes for 350ms.

Use Value: Guarantees safe MCU initialization post-cranking without requiring complex analog supervision circuitry.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MAX6326–293	Fixed 2.93V trip point; 140ms min reset timeout; no pushbutton debounce support	Requires external RC network for manual reset; suited for simpler power-only monitoring	Select when pushbutton functionality is unnecessary and tighter trip-point tolerance (±1.5%) is required
TPS3808G18	Adjustable trip via external resistor divider; 200ms min reset timeout; supports watchdog timer	Needs external components for fixed-threshold operation; adds watchdog capability not present in DS1233A-10+T&R	Choose when system-level watchdog supervision and flexible threshold configuration outweigh cost and BOM simplicity

Compared with MAX6326–293 and TPS3808G18, the DS1233A-10+T&R provides integrated pushbutton debounce and fixed 350ms timing without external components - making it optimal for cost-sensitive, space-constrained 3.3V microcontroller reset applications where manual reset reliability is critical.

Availability

DS1233A-10+T&R is available at Aetrix Electronics and suitable for industrial PLC controllers, smart energy meters, and automotive body control modules requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for DS1233A-10+T&R 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

Maxim Integrated (now part of Analog Devices) designs precision analog and mixed-signal ICs for power management, sensing, and interface applications in industrial, medical, and communications systems.

The DS1233A-10+T&R belongs to Maxim's EconoReset™ family of supervisory circuits, engineered specifically for low-cost, high-reliability power-up and brownout reset in 3.3V microcontroller-based systems.

FAQ

What is the exact V_CC trip voltage range for DS1233A-10+T&R?

The DS1233A-10+T&R has a guaranteed V_CC trip point range of 2.80V to 2.97V at +25°C and -40°C to +85°C, corresponding to a nominal 2.88V threshold with ±10% tolerance. This specification ensures reliable reset assertion before most 3.3V microprocessors enter undefined operating states during undervoltage conditions.

Does DS1233A-10+T&R require external components for basic operation?

Yes - DS1233A-10+T&R requires a 100pF to 0.01µF capacitor between the RESET pin and ground for proper pushbutton debounce and stable reset pulse generation. No external resistors are needed due to its internal 5kΩ pull-up, but a 1kΩ minimum external pull-up is recommended if higher reset sink current is required.

Can DS1233A-10+T&R be used with 5V microcontrollers?

No - DS1233A-10+T&R is specified only for 3.3V supply monitoring with a 2.88V trip point. For 5V systems, Maxim offers the DS1233-10 variant (4.375V nominal trip). Using DS1233A-10+T&R on a 5V rail would result in immediate, permanent reset assertion since V_CC exceeds its maximum rated 5.5V absolute limit only under stress conditions.

What is the function of PIN 4 in the SOT-223 package of DS1233A-10+T&R?

PIN 4 in the SOT-223 package of DS1233A-10+T&R is a dedicated ground terminal, electrically identical to PIN 1. It improves thermal conduction and reduces ground impedance in high-density PCB layouts, but does not alter functionality - both ground pins must be connected to the same system ground plane.

How does DS1233A-10+T&R handle pushbutton release timing?

DS1233A-10+T&R detects the rising edge of the RESET line after a pushbutton release and initiates a precise 350ms reset pulse. Its internal debounce logic ignores contact bounce during release, and the pulse width remains within 250–450ms across temperature and supply variations - ensuring consistent reset duration regardless of mechanical switch characteristics.

DS1233A-10+T&R Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc./Maxim Integrated

Series:: EconoReset

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

Packaging:: Tape & Reel (TR)

Product Status:: Active

Programmable:: Not Verified

Type:: Simple Reset/Power-On Reset

Number of Voltages Monitored:: 1

Voltage - Threshold:: 2.88V

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

DS1233A-10+T&R FAQ

1.How can I place an order for DS1233A-10+T&R through Aetrix?

Please submit a Request for Quotation (RFQ) for DS1233A-10+T&R 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 DS1233A-10+T&R reliable?

The price and inventory of DS1233A-10+T&R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS1233A-10+T&R is usually 5 days.

3.What payment methods are accepted for DS1233A-10+T&R?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1233A-10+T&R transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DS1233A-10+T&R?

DS1233A-10+T&R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DS1233A-10+T&R 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 DS1233A-10+T&R?

For technical support, including DS1233A-10+T&R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1233A-10+T&R requirements.

6.How does Aetrix verify that DS1233A-10+T&R is sourced from the original manufacturer or authorized distributors?

All DS1233A-10+T&R 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 DS1233A-10+T&R meets industry standards.

7.What is the process for return or replacement of DS1233A-10+T&R?

All DS1233A-10+T&R units undergo pre-shipment inspection (PSI). If there is an issue with DS1233A-10+T&R, 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 DS1233A-10+T&R part is unused and in its original packaging.

Return procedure for DS1233A-10+T&R:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…