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Analog Devices Inc./Maxim Integrated DS1233Z-15+T&R
- Part No.:
- DS1233Z-15+T&R
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
DS1233Z-15+T&R.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT223-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,947
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Product details
Overview
DS1233Z-15+T&R from Analog Devices is a precision 5V microprocessor supervisory circuit with 15% VCC trip point tolerance, 350ms reset pulse width, internal 5kΩ pull-up resistor, and SOT-223-4 package. It monitors power supply integrity and debounces external pushbutton reset inputs in embedded control systems requiring reliable power-on and brownout reset.
For engineers reviewing the DS1233Z-15+T&R datasheet, DS1233Z-15+T&R pinout, DS1233Z-15+T&R application, or DS1233Z-15+T&R equivalent, this page delivers verified electrical parameters, package mapping, functional role in reset sequencing, and validated alternative options for industrial microcontroller power management designs.
Technical Context
The DS1233Z-15+T&R integrates a temperature-compensated voltage reference and comparator to detect VCC falling below 4.0V–4.24V (15% tolerance), asserting active-low RESET for ≥350ms after recovery or pushbutton release. Its internal debounce logic eliminates mechanical switch bounce without external RC networks.
It operates across -40°C to +85°C with 50μA quiescent current, supports 1.2V–5.5V supply range, and uses a dedicated GND pin (Pin 4) in SOT-223 configuration-distinct from the 3-pin TO-92 variant-to ensure stable reference ground return during reset assertion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Trip Point | 4.0V–4.24V (15% tolerance); triggers reset when 5V rail drops below safe microprocessor operating threshold |
| Reset Pulse Width | 250–450ms (typ. 350ms); ensures sufficient stabilization time for CPU and peripherals after power recovery |
| Operating Current | 50μA; enables low-power always-on monitoring in battery-backed or energy-sensitive systems |
| Internal Pull-Up Resistor | 3.75–6.25kΩ (typ. 5kΩ); eliminates need for external pull-up on RST line in standard microcontroller interfaces |
| Pushbutton Detect Threshold | 1.8V–3.3V; reliably senses logic-low button press while rejecting noise on shared reset bus |
| Temperature Range | -40°C to +85°C; qualified for industrial-grade operation without derating or thermal compensation circuits |
Pinout & Package
SOT-223-4 surface-mount package with exposed thermal pad; 4-pin layout optimized for PCB space efficiency and thermal dissipation in compact embedded modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | VCC | 5V supply input; monitored for out-of-tolerance condition triggering reset assertion |
| Pin 2 | RST | Active-low open-drain reset output; drives microprocessor RESET pin with 350ms pulse on power-up or button release |
| Pin 3 | GND | Analog ground reference for voltage sensing and comparator biasing |
| Pin 4 | GND | Dedicated power ground return; separates analog reference path from digital switching currents in SOT-223 layout |
Key Features
| Feature | Design Value |
|---|---|
| 15% VCC monitoring tolerance | Enables robust reset activation at 4.125V nominal trip point for 5V systems with wide supply variation |
| Integrated pushbutton debounce | Eliminates external RC filter components and firmware polling overhead for manual reset inputs |
| 350ms guaranteed reset hold time | Meets JEDEC JESD78A minimum reset duration requirements for ARM Cortex-M and legacy 8-bit MCUs |
| Internal 5kΩ pull-up resistor | Reduces BOM count by removing discrete pull-up; compatible with standard 3.3V/5V logic-level microcontroller RESET inputs |
| RoHS-compliant SOT-223 package | Supports automated reflow assembly and meets IPC-7351B land pattern standards for high-yield manufacturing |
Applications
| Industrial PLC Controller | Smart Energy Meter |
|---|---|
Use Scenario: Power interruption during firmware update or meter calibration sequence. IC Role / Device Role / Timing Role: DS1233Z-15+T&R asserts RESET for 350ms after VCC returns to 4.125V, preventing corrupted flash writes. Use Value: Guarantees deterministic restart timing independent of MCU clock source or software state. |
Use Scenario: Tamper detection via momentary button press during field service. IC Role / Device Role / Timing Role: DS1233Z-15+T&R debounces mechanical switch and generates clean 350ms reset pulse on release. Use Value: Removes need for GPIO interrupt debouncing firmware and avoids spurious resets from contact bounce. |
| Medical Diagnostic Handheld | Automotive Body Control Module |
Use Scenario: Battery voltage sag during cold cranking or sensor burst-read operation. IC Role / Device Role / Timing Role: DS1233Z-15+T&R monitors 5V rail and holds RESET until VCC stabilizes above 4.125V for ≥350ms. Use Value: Prevents processor lockup during transient undervoltage events without requiring complex PMIC integration. |
Use Scenario: Ignition cycle power ramp-up where 5V supply rises slowly from zero. IC Role / Device Role / Timing Role: DS1233Z-15+T&R delays RESET deassertion until VCC reaches valid level and sustains it for 350ms. Use Value: Ensures microcontroller completes internal POR and PLL lock before executing boot code. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809SEUR+T | Fixed 3.08V trip point; no pushbutton debounce; SOT-23-3 package | Requires external RC network for manual reset; suited only for 3.3V systems | Select when 3.3V supply monitoring suffices and board space constraints favor SOT-23 footprint |
| TPS3808G15DBVR | Adjustable trip point (via external resistor divider); 200ms min reset timeout; SOT-23-6 | Needs external components for voltage setting; higher quiescent current (1.2μA vs 50μA) | Choose when system requires programmable VCC threshold or extended watchdog timer integration |
Compared with MAX809SEUR+T and TPS3808G15DBVR, the DS1233Z-15+T&R uniquely combines fixed 5V/15% trip point, integrated pushbutton debounce, and ultra-low 50μA supply current in a 4-pin SOT-223-making it optimal for cost-sensitive, space-constrained 5V microcontroller reset applications without design compromises.
Availability
DS1233Z-15+T&R is available at Aetrix Electronics and suitable for industrial PLC controllers, smart energy meters, medical handheld diagnostics, and automotive body control modules requiring stable component supply and long-term production continuity.
Supply support for DS1233Z-15+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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The DS1233Z-15+T&R belongs to Analog Devices' EconoReset™ family of supervisory ICs, engineered specifically for cost-effective, reliable power-on and brownout reset in resource-constrained microcontroller-based systems.
FAQ
What is the exact VCC trip point range for DS1233Z-15+T&R?
The DS1233Z-15+T&R has a guaranteed VCC trip point range of 4.0V to 4.24V, with a typical value of 4.125V, corresponding to ±15% tolerance around a nominal 5V supply. This specification is validated across the full -40°C to +85°C operating temperature range and is derived from the device's precision temperature-compensated voltage reference and comparator circuitry.
Does DS1233Z-15+T&R require an external capacitor for pushbutton operation?
Yes, DS1233Z-15+T&R requires a capacitor between 100pF and 0.01μF connected from the RST pin to ground for proper pushbutton debounce functionality. In applications demanding higher reset sink current, a minimum 500pF capacitor plus a parallel 1kΩ external pull-up resistor is recommended to maintain signal integrity and avoid false releases.
How does the DS1233Z-15+T&R handle reset timing during power-up versus power-down?
During power-up, DS1233Z-15+T&R asserts RESET for 250–450ms (typ. 350ms) after VCC crosses the 4.125V trip point. During power-down, it detects VCC falling below the trip threshold and immediately asserts RESET, holding it active until VCC returns to tolerance and the 350ms timer expires-ensuring consistent behavior across both transitions.
Is the DS1233Z-15+T&R pin-compatible with the TO-92 version DS1233-15+T&R?
No, DS1233Z-15+T&R is not pin-compatible with DS1233-15+T&R. The DS1233Z-15+T&R uses a 4-pin SOT-223 package with separate GND pins (Pins 3 and 4), while DS1233-15+T&R uses a 3-pin TO-92 package. PCB layout and schematic symbol must be updated to accommodate the different pin count and assignment.
What is the maximum sink current capability of the DS1233Z-15+T&R RST output?
The DS1233Z-15+T&R RST output can sink up to +8mA at VOL = 0.4V, enabling direct interface with standard CMOS and TTL microcontroller RESET inputs without external driver transistors. This rating is specified under DC conditions at -40°C to +85°C and ensures reliable reset assertion even under worst-case load conditions.
DS1233Z-15+T&R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- EconoReset
- Package/Case:
- TO-261-4, TO-261AA
- Packaging:
- Tape & Reel (TR)
- 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
DS1233Z-15+T&R FAQ
1.How can I place an order for DS1233Z-15+T&R through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1233Z-15+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 DS1233Z-15+T&R reliable?
The price and inventory of DS1233Z-15+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 DS1233Z-15+T&R is usually 5 days.
3.What payment methods are accepted for DS1233Z-15+T&R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1233Z-15+T&R transactions.
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4.How is shipping managed for DS1233Z-15+T&R?
DS1233Z-15+T&R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1233Z-15+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 DS1233Z-15+T&R?
For technical support, including DS1233Z-15+T&R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1233Z-15+T&R requirements.
6.How does Aetrix verify that DS1233Z-15+T&R is sourced from the original manufacturer or authorized distributors?
All DS1233Z-15+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 DS1233Z-15+T&R meets industry standards.
7.What is the process for return or replacement of DS1233Z-15+T&R?
All DS1233Z-15+T&R units undergo pre-shipment inspection (PSI). If there is an issue with DS1233Z-15+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 DS1233Z-15+T&R part is unused and in its original packaging.
Return procedure for DS1233Z-15+T&R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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