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Analog Devices Inc./Maxim Integrated DS1233Z-10
- Part No.:
- DS1233Z-10
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
DS1233Z-10.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT223-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,565
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Product details
Overview
DS1233Z-10 from Analog Devices is a precision 5V microprocessor supervisory circuit in SOT-223 package, providing power-on reset, power-fail detection, and pushbutton reset with 350ms active-low reset pulse duration, ±10% VCC trip point (4.25V–4.49V), and internal 5kΩ pull-up resistor. It operates from -40°C to +85°C and replaces discrete reset solutions in embedded control systems.
For engineers reviewing the DS1233Z-10 datasheet, DS1233Z-10 pinout, DS1233Z-10 application, or DS1233Z-10 equivalent, this device delivers verified voltage monitoring accuracy, pushbutton debouncing, and guaranteed reset timing for reliable microprocessor initialization in industrial and automotive electronics.
Technical Context
The DS1233Z-10 integrates a temperature-compensated voltage reference and comparator to monitor VCC against a fixed ±10% threshold (4.375V typical), asserting RESET when VCC falls below 4.25V or rises above 4.49V. It generates a precisely timed 350ms (250–450ms) active-low reset pulse upon power-up recovery or pushbutton release.
Its dual-function architecture supports both autonomous power supervision and external pushbutton override: RST serves as both output and input-debounced via internal timing logic-and requires an external 100pF–0.01μF capacitor to ground for proper switch interface. No external pull-up is required due to integrated 5kΩ resistor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Trip Point | 4.25V to 4.49V (±10% tolerance); ensures reset assertion before 5V rail drops below processor minimum operating voltage |
| Reset Pulse Duration | 250–450ms (typ. 350ms); guarantees sufficient stabilization time for microprocessor and power supply after power-up or button release |
| Operating Temperature | -40°C to +85°C; qualified for industrial-grade embedded applications without derating |
| Supply Voltage Range | 1.2V to 5.5V; allows operation during brown-out conditions down to 1.2V while maintaining reset assertion |
| Internal Pull-Up Resistor | 3.75–6.25kΩ (typ. 5kΩ); eliminates need for external pull-up on RST line in standard configurations |
| Pushbutton Detect Threshold | 1.8V to 3.3V; enables reliable low-voltage switch sensing without external level-shifting circuitry |
| Output Sink Current | 8mA at 0.4V; drives standard TTL/CMOS reset inputs directly without buffer stages |
Pinout & Package
SOT-223 package (4-pin, surface-mount), thermally enhanced with exposed thermal pad; pin 4 is dedicated GND for improved noise immunity and thermal dissipation in high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | GROUND | Primary ground reference for internal reference and comparator; connects to system ground plane |
| Pin 2 | RESET | Open-drain active-low reset output; also accepts external pushbutton signal for debounced manual reset |
| Pin 3 | VCC | Power supply input; monitored for out-of-tolerance condition triggering reset assertion |
| Pin 4 | GROUND | Dedicated second ground terminal; reduces ground bounce and improves reset timing stability under load transients |
Key Features
| Feature | Design Value |
|---|---|
| 350ms Guaranteed Reset Pulse | Ensures full microprocessor initialization and clock stabilization before release, eliminating race conditions during power-up |
| Integrated Pushbutton Debounce Logic | Removes mechanical switch bounce without external RC network or firmware intervention, reducing BOM count and layout area |
| Precision ±10% VCC Monitoring | Matches common 5V regulator tolerances; avoids false resets caused by nominal rail variations or transient dips |
| Internal 5kΩ Pull-Up Resistor | Eliminates external component for RST line biasing in default configurations, simplifying design and improving reliability |
| Thermally Optimized SOT-223 Package | Enables higher power dissipation and lower junction temperature vs. TO-92, supporting continuous operation in compact enclosures |
Applications
| Industrial PLC Controller | Automotive Body Control Module |
|---|---|
Use Scenario: Power cycling during CAN bus wake-up events or battery voltage fluctuations in 12V vehicle electrical systems. IC Role / Device Role / Timing Role: Supervisory reset generator ensuring deterministic microcontroller restart after undervoltage or manual service reset. Use Value: Prevents lockup during cold-cranking or alternator ripple by asserting reset until VCC stabilizes above 4.25V for ≥350ms. | Use Scenario: Microcontroller-based door module requiring reliable reset after ignition key insertion or jump-start recovery. IC Role / Device Role / Timing Role: Dual-role supervisor: monitors 5V LDO output and accepts mechanical reset button input with hardware debounce. Use Value: Eliminates firmware-based debounce routines and guarantees 350ms reset hold time regardless of software state. |
| Medical Infusion Pump | Smart Energy Meter |
Use Scenario: Battery-backed operation where main supply may dip during motor activation or sensor sampling bursts. IC Role / Device Role / Timing Role: Power-fail detector and reset timer that asserts RST before brown-out causes memory corruption or actuator misfire. Use Value: Uses internal temperature-compensated reference to maintain trip point accuracy across -40°C to +85°C ambient range. | Use Scenario: Tamper-resistant meter with physical reset button for field calibration or firmware update initiation. IC Role / Device Role / Timing Role: Hardware reset controller interfacing pushbutton to microcontroller reset pin with ESD-robust input structure. Use Value: Internal 5kΩ pull-up and 1.8–3.3V detect threshold ensure compatibility with both 3.3V and 5V logic families without external components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD1+T | Fixed 3.08V reset threshold; no pushbutton interface; SOT-23-3 package; 240ms reset timeout | Single-function power monitor only; unsuitable where manual reset or 5V supervision is required | Select only if system uses 3.3V logic and requires minimal footprint without pushbutton support |
| TPS3808G12DBVR | Adjustable reset threshold (0.405–5.8V); 200ms min reset pulse; SOT-23-6; requires external resistor divider | Greater flexibility in threshold setting but adds two passive components and lacks integrated pushbutton debounce | Choose when precise custom trip point is needed and board space allows for external resistors |
Compared with MAX809TRD1+T and TPS3808G12DBVR, the DS1233Z-10 uniquely combines 5V-specific ±10% monitoring, hardware pushbutton debounce, and SOT-223 thermal performance in a single 4-pin package-reducing design complexity where 5V microcontrollers require robust manual and power-fail reset coordination.
Availability
DS1233Z-10 is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, medical infusion pumps, and smart energy meters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for DS1233Z-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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.
The DS1233Z-10 belongs to the EconoReset™ family of supervisory circuits designed specifically for cost-sensitive, high-reliability microprocessor reset applications where precision voltage monitoring and hardware-managed reset timing are essential.
FAQ
What is the exact VCC trip point range for DS1233Z-10?
The DS1233Z-10 has a guaranteed VCC trip point range of 4.25V to 4.49V, corresponding to ±10% tolerance around a typical 4.375V threshold. This specification is validated across the full -40°C to +85°C operating temperature range and ensures reset assertion before most 5V microprocessors enter undefined operation.
Does DS1233Z-10 require an external capacitor on the RST pin?
Yes, DS1233Z-10 requires an external capacitor between 100pF and 0.01μF connected from RST to ground for proper pushbutton debounce operation. In applications needing higher reset sink current, a minimum 500pF capacitor plus a parallel 1kΩ external pull-up resistor is recommended per the datasheet.
Can DS1233Z-10 be used with 3.3V microcontrollers?
No-DS1233Z-10 is specified exclusively for 5V systems. Its VCC trip point (4.25–4.49V) and pushbutton detect threshold (1.8–3.3V) are optimized for 5V rails. For 3.3V supervision, Analog Devices offers the DS1233A-10 variant with 2.80–2.97V trip point and compatible pushbutton thresholds.
What is the function of Pin 4 on DS1233Z-10?
Pin 4 on DS1233Z-10 is a dedicated second ground terminal in the SOT-223 package. It provides low-impedance return path separation for internal reference circuitry, reducing ground bounce and improving reset timing accuracy during fast VCC transients or heavy RST sink current events.
How does DS1233Z-10 handle power-down reset assertion?
During power-down, DS1233Z-10 asserts RESET when VCC falls below 4.25V and maintains it until VCC drops below 1.2V. The device continues asserting reset for ≥100ns after VCC crosses the trip point downward, ensuring clean, glitch-free reset signaling even during rapid brown-out conditions.
DS1233Z-10 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- EconoReset
- Package/Case:
- TO-261-4, TO-261AA
- Packaging:
- Tube
- 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:
- Surface Mount
- Supplier Device Package:
- SOT-223-3
DS1233Z-10 FAQ
1.How can I place an order for DS1233Z-10 through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1233Z-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 DS1233Z-10 reliable?
The price and inventory of DS1233Z-10 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS1233Z-10 is usually 5 days.
3.What payment methods are accepted for DS1233Z-10?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1233Z-10 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1233Z-10?
DS1233Z-10 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1233Z-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 DS1233Z-10?
For technical support, including DS1233Z-10 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1233Z-10 requirements.
6.How does Aetrix verify that DS1233Z-10 is sourced from the original manufacturer or authorized distributors?
All DS1233Z-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 DS1233Z-10 meets industry standards.
7.What is the process for return or replacement of DS1233Z-10?
All DS1233Z-10 units undergo pre-shipment inspection (PSI). If there is an issue with DS1233Z-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 DS1233Z-10 part is unused and in its original packaging.
Return procedure for DS1233Z-10:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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