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

Analog Devices Inc./Maxim Integrated DS1233D-10/T&R

Name: DS1233D-10/T&R
Brand: Analog Devices Inc./Maxim Integrated
SKU: DS1233D-10/T&R
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: DS1233D-10/T&R

Manufacturer:: Analog Devices Inc./Maxim Integrated

Category:: Supervisors

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

Datasheet:: DS1233D-10/T&R.pdf

Description:: IC SUPERVISOR 1 CHANNEL TO92-3

Quantity:: RFQ Add To RFQ list

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Product details

Overview

DS1233D-10/T&R from Maxim Integrated (formerly Dallas Semiconductor) is a precision 5V microprocessor supervisory circuit with 10% V_CC trip point (4.25–4.49 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-10/T&R datasheet, DS1233D-10/T&R pinout, DS1233D-10/T&R application, or DS1233D-10/T&R equivalent, key selection criteria include guaranteed 350 ms reset timeout, ±10% V_CC threshold accuracy, -40°C to +85°C operating range, SOT-223 or TO-92 package compatibility, and integrated pull-up for simplified board design.

Technical Context

The DS1233D-10/T&R implements a temperature-compensated voltage reference and comparator to detect V_CC deviations beyond its factory-trimmed 10% tolerance band. Its internal power-fail logic ensures immediate RESET assertion on undervoltage and holds RESET active for 250–450 ms after V_CC recovery.

Unlike basic RC reset circuits, DS1233D-10/T&R provides deterministic timing independent of external components and guarantees monotonic V_CC detection with 100 ns response (t_RPD) and controlled slew-rate immunity (300 µs for 4.75 V → 4.00 V transition).

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Trip Point	4.25 V (min) to 4.49 V (max); precise 10% under-voltage detection threshold for 5 V systems
Reset Pulse Width	250–450 ms; ensures full microprocessor and power supply stabilization before release
Operating Temp	-40°C to +85°C; qualified for industrial-grade embedded applications
Supply Current	50 µA typical; ultra-low quiescent draw for battery-backed or low-power systems
Output Drive	8 mA sink at 0.4 V; sufficient to directly drive TTL/CMOS inputs without external buffer
Pull-Up Resistor	3.75–6.25 kΩ internal; eliminates need for discrete pull-up and reduces BOM count
V_CC Response Time	100 ns (t_RPD); fast detection of sudden power collapse prevents processor corruption

Pinout & Package

SOT-223 package (4-pin, surface-mount) with exposed thermal pad; pin-compatible with TO-92 variant except for Pin 4 (GROUND). Designed for reflow soldering per JEDEC J-STD-020 (260°C/10 s).

Pin/Terminal	Circuit Role	Design Meaning
Pin 1	GROUND	Reference return path for internal comparator and voltage reference
Pin 2	RESET (active-low)	Open-drain output asserted low during V_CC fault or power-up; requires external pull-up if not using internal resistor
Pin 3	V_CC	Primary power input; monitored for 10% undervoltage condition
Pin 4	GROUND	Second ground connection for improved noise immunity and thermal dissipation in SOT-223

Key Features

Feature	Design Value
Factory-trimmed 10% V_CC threshold	Eliminates manual calibration and ensures consistent reset behavior across production batches
Guaranteed 350 ms reset timeout	Meets minimum processor initialization timing requirements without external timing components
Integrated 5 kΩ pull-up resistor	Reduces PCB footprint and component count by removing discrete pull-up resistor
Temperature-compensated reference	Maintains trip point accuracy over full -40°C to +85°C range without drift-induced false resets
100 ns V_CC fault detection	Prevents instruction corruption during rapid power collapse events common in industrial environments

Applications

Industrial PLC Control	Point-of-Sale Terminal
Use Scenario: Power interruption during firmware update or I/O scan cycle in factory automation hardware. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-low RESET to halt CPU execution until stable 5 V rail is confirmed. Use Value: Prevents partial writes to flash memory and ensures deterministic restart after brownout recovery.	Use Scenario: Unplanned AC loss or battery depletion during transaction processing in retail terminals. IC Role / Device Role / Timing Role: Monitors 5 V system rail and holds microcontroller in reset for ≥350 ms post-recovery. Use Value: Guarantees EEPROM write completion and avoids corrupted sales log entries.
Medical Diagnostic Instrument	Smart Energy Meter
Use Scenario: Transient line sag during sensor calibration sequence in portable ultrasound units. IC Role / Device Role / Timing Role: Precision voltage monitor triggering hard reset when V_CC drops below 4.25 V for >100 ns. Use Value: Avoids erroneous ADC readings and maintains data integrity during critical measurement windows.	Use Scenario: Voltage dip during RF transmission burst in AMI (Advanced Metering Infrastructure) modules. IC Role / Device Role / Timing Role: Active-low reset generator with 4.25–4.49 V trip window and 250–450 ms hold time. Use Value: Ensures metrology SoC completes energy accumulation before power interruption disrupts integration.

Industrial PLC Control

Point-of-Sale Terminal

Use Scenario: Power interruption during firmware update or I/O scan cycle in factory automation hardware.

IC Role / Device Role / Timing Role: Supervisory circuit asserting active-low RESET to halt CPU execution until stable 5 V rail is confirmed.

Use Value: Prevents partial writes to flash memory and ensures deterministic restart after brownout recovery.

Use Scenario: Unplanned AC loss or battery depletion during transaction processing in retail terminals.

IC Role / Device Role / Timing Role: Monitors 5 V system rail and holds microcontroller in reset for ≥350 ms post-recovery.

Use Value: Guarantees EEPROM write completion and avoids corrupted sales log entries.

Medical Diagnostic Instrument

Smart Energy Meter

Use Scenario: Transient line sag during sensor calibration sequence in portable ultrasound units.

IC Role / Device Role / Timing Role: Precision voltage monitor triggering hard reset when V_CC drops below 4.25 V for >100 ns.

Use Value: Avoids erroneous ADC readings and maintains data integrity during critical measurement windows.

Use Scenario: Voltage dip during RF transmission burst in AMI (Advanced Metering Infrastructure) modules.

IC Role / Device Role / Timing Role: Active-low reset generator with 4.25–4.49 V trip window and 250–450 ms hold time.

Use Value: Ensures metrology SoC completes energy accumulation before power interruption disrupts integration.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MAX692AESA+	4.63 V fixed threshold; 140 ms min reset pulse; no internal pull-up	Higher trip point suits tighter 5 V regulation; shorter timeout may be insufficient for slow-start regulators	Select when system requires higher V_CC margin and external pull-up is acceptable
TPS3808G12DBVR	1.2 V adjustable threshold via resistor divider; 200 ms min reset; 1.5 µA quiescent current	Configurable trip point enables use with non-5 V rails; lower IQ benefits battery operation	Select for multi-rail systems or ultra-low-power designs where 5 V supervision is secondary

Compared with MAX692AESA+ and TPS3808G12DBVR, DS1233D-10/T&R delivers factory-calibrated 10% tolerance at 5 V with integrated pull-up and guaranteed 350 ms reset hold-making it optimal for cost-sensitive, single-rail industrial controllers where layout simplicity and deterministic timing are prioritized over configurability or ultra-low IQ.

Availability

DS1233D-10/T&R is available at Aetrix Electronics and suitable for industrial PLC control, point-of-sale terminals, medical diagnostic instruments, and smart energy meters requiring stable component supply and long-term manufacturing continuity.

Supply support for DS1233D-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 industrial, automotive, and communications applications.

The DS1233D-10/T&R belongs to Maxim's EconoReset family of supervisory circuits, engineered for reliable, low-cost power monitoring in resource-constrained embedded systems with strict timing and voltage accuracy requirements.

FAQ

What is the exact V_CC trip point range for DS1233D-10/T&R?

The DS1233D-10/T&R has a guaranteed V_CC trip point range of 4.25 V (minimum) to 4.49 V (maximum) at +25°C, corresponding to ±10% tolerance around nominal 5 V. This range is factory-trimmed and temperature-compensated to maintain accuracy across -40°C to +85°C operation. DS1233D-10/T&R does not require external resistors to set this threshold.

Does DS1233D-10/T&R require an external pull-up resistor on the RESET pin?

No, DS1233D-10/T&R includes an internal pull-up resistor of 3.75–6.25 kΩ, eliminating the need for an external component. This feature simplifies PCB layout and reduces BOM count. The RESET pin is open-drain, so the internal pull-up ensures a defined high state when not actively driven low during reset assertion.

What is the reset pulse width specification for DS1233D-10/T&R?

The DS1233D-10/T&R guarantees a reset pulse width of 250–450 ms after V_CC returns to within tolerance. The typical value is 350 ms, ensuring sufficient time for power supply and microprocessor stabilization before release. This timing is internally generated and independent of external capacitors or resistors.

Is DS1233D-10/T&R compatible with Motorola 68XXX and HC16 microprocessors?

Yes, DS1233D-10/T&R is explicitly designed for compatibility with Motorola 68XXX series and HC16 microprocessors. Its active-low RESET output, 8 mA sink capability at 0.4 V, and 350 ms hold time meet the reset timing and electrical interface requirements of these legacy and modern CMOS/TTL processors.

What package options are available for DS1233D-10/T&R?

DS1233D-10/T&R is offered in both TO-92 (3-pin through-hole) and SOT-223 (4-pin surface-mount) packages. The SOT-223 variant adds a dedicated ground pin (Pin 4) for enhanced noise immunity and thermal performance. Both packages share identical electrical specifications and pin functions for Pins 1–3.

DS1233D-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:: Obsolete

Programmable:: Not Verified

Type:: Simple Reset/Power-On Reset

Number of Voltages Monitored:: 1

Voltage - Threshold:: 4.375V

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-10/T&R FAQ

1.How can I place an order for DS1233D-10/T&R through Aetrix?

Please submit a Request for Quotation (RFQ) for DS1233D-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 DS1233D-10/T&R reliable?

The price and inventory of DS1233D-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 DS1233D-10/T&R is usually 5 days.

3.What payment methods are accepted for DS1233D-10/T&R?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1233D-10/T&R transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DS1233D-10/T&R?

DS1233D-10/T&R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DS1233D-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 DS1233D-10/T&R?

For technical support, including DS1233D-10/T&R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1233D-10/T&R requirements.

6.How does Aetrix verify that DS1233D-10/T&R is sourced from the original manufacturer or authorized distributors?

All DS1233D-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 DS1233D-10/T&R meets industry standards.

7.What is the process for return or replacement of DS1233D-10/T&R?

All DS1233D-10/T&R units undergo pre-shipment inspection (PSI). If there is an issue with DS1233D-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 DS1233D-10/T&R part is unused and in its original packaging.

Return procedure for DS1233D-10/T&R:

1.Submit a request within 90 days.

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

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