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Analog Devices Inc./Maxim Integrated DS1233A-10+
- Part No.:
- DS1233A-10+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-226-3, TO-92-3 (TO-226AA)
- Datasheet:
-
DS1233A-10+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:836
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Product details
Overview
DS1233A-10+ from Maxim Integrated is a 3.3V precision voltage-monitoring microprocessor supervisory circuit with pushbutton reset control, 2.88V nominal VCC trip point (±10%), 350ms reset timeout, internal 5kΩ pull-up, and -40°C to +85°C operation - used in embedded systems requiring reliable power-on and manual reset sequencing.
For engineers reviewing the DS1233A-10+ datasheet, DS1233A-10+ pinout, DS1233A-10+ application, or DS1233A-10+ equivalent, key selection criteria include VCC trip accuracy (2.80–2.97V), pushbutton debounce timing (250–450ms), RST output drive capability (8mA sink), low ICC (50µA), and dual-package support (TO-92/SOT-223).
Technical Context
The DS1233A-10+ integrates a temperature-compensated voltage reference and comparator to monitor VCC against a fixed 2.88V threshold with ±10% tolerance, asserting active-low RESET during undervoltage or pushbutton release. Its internal timer ensures 350ms minimum reset assertion after VCC recovery or button release.
It supports two independent reset triggers: power-fail detection (VCC < 2.80V) and external pushbutton debounced via RST pin monitoring; both paths converge to a single open-drain RESET output with internal 5kΩ pull-up and 8mA sink capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Trip Point | 2.80V to 2.97V - defines precise 3.3V supply brownout detection window for reliable microprocessor reset initiation |
| Reset Timeout | 250–450ms - guarantees minimum system stabilization time after power recovery or button release |
| Supply Current | 50µA - enables ultra-low-power operation in battery-backed or energy-constrained embedded designs |
| RST Output Sink | 8mA at 0.4V - drives standard logic inputs and RC networks without external buffer components |
| Operating Temp | -40°C to +85°C - supports industrial-grade deployment in automotive ECUs, PLCs, and network edge devices |
| Internal Pull-Up | 3.75–6.25kΩ - eliminates need for external resistor in basic reset configurations |
Pinout & Package
DS1233A-10+ is available in TO-92 (3-pin) and SOT-223 (4-pin) packages; both share identical functional pin mapping except SOT-223 adds Pin 4 as ground for thermal enhancement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (TO-92) / Pin 1 (SOT-223) | GROUND | Reference return path for internal comparator and reset driver; must be low-impedance connection |
| Pin 2 (TO-92) / Pin 2 (SOT-223) | RESET (open-drain) | Active-low reset signal output; requires external pull-up if driving non-Maxim logic families |
| Pin 3 (TO-92) / Pin 3 (SOT-223) | VCC | Primary power input; monitored for undervoltage condition and powers internal circuitry |
| Pin 4 (SOT-223 only) | GROUND | Secondary ground terminal for improved thermal dissipation and noise immunity in high-density layouts |
Key Features
| Feature | Design Value |
|---|---|
| Integrated pushbutton debounce | Eliminates external RC filter and software polling, delivering clean 350ms reset pulse on button release |
| Precision voltage reference | Temperature-compensated bandgap reference ensures stable 2.88V trip point across full -40°C to +85°C range |
| Single-supply operation | Operates directly from 3.3V rail with no auxiliary supply needed - reduces BOM count and layout complexity |
| Low quiescent current | 50µA typical ICC allows continuous monitoring in always-on subsystems without compromising battery life |
Applications
| Industrial PLC Controller | Smart Metering Module |
|---|---|
Use Scenario: Power interruption during firmware update or sensor calibration causes unsafe state retention. IC Role / Device Role / Timing Role: DS1233A-10+ asserts RESET until VCC stabilizes post-recovery and holds it for 350ms to ensure MCU core and peripherals initialize synchronously. Use Value: Prevents corrupted register states and flash writes by guaranteeing deterministic reset timing aligned with 3.3V rail settling behavior. | Use Scenario: Field technician initiates manual reset via front-panel button to clear communication fault without cycling main power. IC Role / Device Role / Timing Role: DS1233A-10+ monitors RST pin for falling edge, debounces mechanical switch bounce, then generates precise 350ms active-low pulse. Use Value: Enables reliable field service without requiring MCU firmware intervention or external debounce hardware. |
| Network Edge Gateway | Medical Diagnostic Sensor Hub |
Use Scenario: Brownout event occurs during Ethernet packet transmission, risking PHY lockup or memory corruption. IC Role / Device Role / Timing Role: DS1233A-10+ detects VCC drop below 2.80V and forces immediate RESET, maintaining assertion until VCC exceeds 2.97V and holds for 350ms. Use Value: Ensures complete system restart before resuming network stack operations - avoids partial initialization failures. | Use Scenario: Battery-powered portable device experiences transient voltage sag during sensor burst acquisition. IC Role / Device Role / Timing Role: DS1233A-10+ continuously monitors 3.3V rail with ±10% tolerance and triggers hard reset before ADC or UART misbehavior occurs. Use Value: Maintains data integrity and regulatory compliance by preventing undefined MCU behavior during marginal supply conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326UT29D+ | Fixed 2.93V trip, 200ms reset timeout, no pushbutton support, SOT-23 package | Lacks manual reset functionality; suited for space-constrained designs where only power monitoring is required | Select when board area is critical and external reset button is omitted |
| TPS3808G125DBVR | Adjustable trip via external resistor divider, 200ms/400ms selectable timeout, higher ICC (1.5µA typ), SOT-23 | Requires external components for trip setting; better for multi-rail systems needing flexible thresholds | Choose when VCC trip must be tuned per design or multiple supply rails require coordinated reset |
Compared with MAX6326UT29D+ and TPS3808G125DBVR, DS1233A-10+ uniquely combines factory-trimmed 2.88V monitoring, integrated pushbutton debounce, and dual-package flexibility - making it optimal for cost-sensitive, manually serviced 3.3V embedded systems where simplicity and reliability are prioritized over configurability.
Availability
DS1233A-10+ is available at Aetrix Electronics and suitable for industrial automation controllers, smart utility meters, and network edge gateways requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.
Supply support for DS1233A-10+ 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, communications, and computing applications, emphasizing reliability, integration, and low-power operation.
The DS1233A-10+ belongs to Maxim's EconoReset™ supervisory family, engineered specifically for cost-effective, single-chip reset management in 3.3V microprocessor systems with manual override capability.
FAQ
What is the exact VCC trip voltage range for DS1233A-10+?
The DS1233A-10+ has a guaranteed VCC trip point between 2.80V and 2.97V at +25°C and across -40°C to +85°C, corresponding to a nominal 2.88V threshold with ±10% tolerance. This range is factory-trimmed and specified in the DC Electrical Characteristics table under parameter VCCTP1.
Does DS1233A-10+ require an external capacitor for pushbutton operation?
Yes - DS1233A-10+ requires a capacitor of 100pF to 0.01µF connected between the RST pin and ground for proper pushbutton debounce. For applications demanding higher reset current, a minimum 500pF capacitor plus a parallel 1kΩ external pull-up resistor is recommended per the datasheet note.
Can DS1233A-10+ be used with 5V microcontrollers?
No - DS1233A-10+ is rated for VCC operation from 1.2V to 5.5V but is specifically trimmed for 3.3V systems with a 2.88V trip point. Using it with 5V logic requires level-shifting the open-drain RST output and verifying compatibility with the target MCU's reset input voltage thresholds.
What is the reset timeout behavior of DS1233A-10+ after power recovery?
After VCC returns to within tolerance (≥2.80V), DS1233A-10+ maintains the active-low RESET signal for 250–450ms (typical 350ms) to allow power supply and microprocessor stabilization. This timing is internally generated and independent of external components.
Is DS1233A-10+ pin-compatible with DS1233A-15+?
Yes - DS1233A-10+ and DS1233A-15+ share identical pinout, package options (TO-92/SOT-223), and functional interface; they differ only in VCC trip point (2.88V vs. 2.72V nominal) and pushbutton detect/release thresholds, allowing direct substitution where trip voltage tolerance aligns with system requirements.
DS1233A-10+ 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:
- 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+ FAQ
1.How can I place an order for DS1233A-10+ through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1233A-10+ 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+ reliable?
The price and inventory of DS1233A-10+ 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+ is usually 5 days.
3.What payment methods are accepted for DS1233A-10+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1233A-10+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1233A-10+?
DS1233A-10+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1233A-10+ 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+?
For technical support, including DS1233A-10+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1233A-10+ requirements.
6.How does Aetrix verify that DS1233A-10+ is sourced from the original manufacturer or authorized distributors?
All DS1233A-10+ 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+ meets industry standards.
7.What is the process for return or replacement of DS1233A-10+?
All DS1233A-10+ units undergo pre-shipment inspection (PSI). If there is an issue with DS1233A-10+, 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+ part is unused and in its original packaging.
Return procedure for DS1233A-10+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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