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Analog Devices Inc./Maxim Integrated DS1233DZ-15+T&R
- Part No.:
- DS1233DZ-15+T&R
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
DS1233DZ-15+T&R.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT223-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,578
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Product details
Overview
DS1233DZ-15+T&R from Maxim Integrated (now Analog Devices) is a precision 5V microprocessor supervisory circuit with 15% VCC trip point, 350 ms reset timeout, 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 DS1233DZ-15+T&R datasheet, DS1233DZ-15+T&R pinout, DS1233DZ-15+T&R application, or DS1233DZ-15+T&R equivalent, key selection criteria include guaranteed 4.0–4.24 V trip threshold, -40°C to +85°C operation, SOT-223-4 package compatibility, and integrated reset timing without external RC components.
Technical Context
The DS1233DZ-15+T&R implements a temperature-compensated voltage reference and comparator to detect VCC droop below 4.0 V (min), asserting active-low RESET until VCC recovers and remains stable for 250–450 ms. Its internal 5 kΩ pull-up eliminates need for external resistor on RST.
Unlike pushbutton-capable variants (e.g., DS1233-15), DS1233DZ-15+T&R omits pushbutton detection circuitry-confirmed by "N/A" entries in the EconoReset Selection Guide-and is optimized solely for power-fail monitoring and power-up reset sequencing in fixed-supply 5V systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Trip Point | 4.0 V (min) to 4.24 V (max); ensures reliable reset assertion before 5V rail falls below 4.0 V under load or brownout |
| Reset Timeout | 250–450 ms; guarantees processor stabilization after power recovery, meeting typical MCU reset hold requirements |
| Operating Temp | -40°C to +85°C; qualified for industrial-grade embedded applications without derating |
| Supply Voltage Range | 1.2 V to 5.5 V; supports operation down to battery-backed standby levels while maintaining trip accuracy |
| Output Drive | 8 mA sink at 0.4 V; directly drives standard TTL/CMOS reset inputs without buffer stage |
| Internal Pull-Up | 3.75–6.25 kΩ; eliminates external component count and PCB space for RST line termination |
| Power Supply Current | 50 µA; enables low-power system monitoring during sleep or standby modes |
Pinout & Package
SOT-223-4 surface-mount package with exposed thermal pad; compact footprint (6.5 mm × 3.5 mm) and enhanced thermal performance over TO-92.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PIN 1 | GROUND | Primary ground reference for comparator and output driver; must be low-impedance connection to system GND plane |
| PIN 2 | RESET (active-low) | Open-drain output; requires external pull-up only if internal 5 kΩ is insufficient for target load capacitance or noise margin |
| PIN 3 | VCC | Monitored power supply input; connects directly to 5V rail being supervised |
| PIN 4 | GROUND (thermal pad) | Secondary ground connection tied to exposed copper pad; improves thermal dissipation and reduces ground bounce |
Key Features
| Feature | Design Value |
|---|---|
| 15% VCC trip tolerance | Guarantees reset activation before 5V rail drops below 4.0 V, preventing erratic MCU behavior during brownouts |
| 350 ms typ. reset timeout | Meets JEDEC JESD78 and common MCU reset timing requirements without external timing components |
| Integrated 5 kΩ pull-up | Reduces BOM count by one resistor and eliminates layout uncertainty in RST net routing |
| Temperature-compensated reference | Maintains ±1% trip point stability across -40°C to +85°C, eliminating calibration or trimming |
| Low 50 µA quiescent current | Enables continuous supervision in battery-backed or energy-constrained systems without significant drain |
Applications
| Industrial PLC Controller | Medical Diagnostic Equipment |
|---|---|
Use Scenario: Power interruption during firmware update or sensor data acquisition. IC Role / Device Role / Timing Role: Supervisory IC generating clean, timed reset pulse to prevent partial writes or corrupted state machines. Use Value: Guaranteed 4.0–4.24 V trip window and 250–450 ms hold time ensure MCU resets fully before reinitializing critical I/O peripherals. | Use Scenario: Unplanned AC loss in portable ultrasound or ECG units with backup battery switchover. IC Role / Device Role / Timing Role: Power-fail detector that triggers controlled shutdown and initiates safe state preservation. Use Value: Internal 5 kΩ pull-up and 50 µA current enable direct integration into low-power backup domains without added components. |
| Automotive Body Control Module | Point-of-Sale Terminal |
Use Scenario: Load dump or cold-crank event causing 5V rail sag below specification. IC Role / Device Role / Timing Role: Reset generator ensuring microcontroller remains held in reset until stabilized post-event. Use Value: -40°C to +85°C rating and precise 15% trip point provide robust operation across automotive ambient extremes. | Use Scenario: Frequent power cycling in retail environments with unstable wall adapters. IC Role / Device Role / Timing Role: Power-on reset supervisor enforcing minimum 250 ms reset assertion after VCC reaches regulation. Use Value: Eliminates need for discrete RC network, reducing assembly cost and improving long-term timing consistency vs. capacitor aging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809SEUR+T | 4.63 V fixed trip point (±2.5%), 140 ms reset timeout, SOT-23-3 package | Lacks internal pull-up; requires external 10–100 kΩ resistor on RST | Choose when tighter trip accuracy and smaller footprint are prioritized over integrated pull-up and longer timeout |
| TPS3808G15DBVR | 4.63 V trip (±0.5%), adjustable timeout (1.25 ms–10 s), SOT-23-6 package | Requires external capacitor for timing; higher BOM count and layout complexity | Choose when programmable reset duration or ultra-high trip accuracy is required, not for drop-in replacement |
Compared with DS1233DZ-15+T&R, MAX809SEUR+T offers higher trip precision but shorter reset hold and no internal pull-up, while TPS3808G15DBVR adds flexibility at the cost of component count and design effort-neither is pin-compatible, and both require layout changes.
Availability
DS1233DZ-15+T&R is available at Aetrix Electronics and suitable for industrial control, medical diagnostics, automotive body electronics, and point-of-sale terminals requiring stable component supply and long-lifecycle support.
Supply support for DS1233DZ-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 (via acquisition of Maxim Integrated) designs high-performance analog, mixed-signal, and power management ICs for precision sensing, power integrity, and reliable system supervision.
The DS1233DZ-15+T&R belongs to the EconoReset™ family of supervisory circuits, engineered for cost-sensitive, high-volume 5V microprocessor systems needing guaranteed power-on and brownout reset without external timing components.
FAQ
What is the exact VCC trip voltage range for DS1233DZ-15+T&R?
The DS1233DZ-15+T&R has a guaranteed VCC trip point range of 4.0 V (minimum) to 4.24 V (maximum) at +25°C, corresponding to its 15% tolerance specification for a nominal 5V supply. This range is validated across -40°C to +85°C per the datasheet's DC electrical characteristics table, with temperature compensation maintaining tight drift.
Does DS1233DZ-15+T&R include an internal pull-up resistor on the RESET pin?
Yes, DS1233DZ-15+T&R integrates a 3.75–6.25 kΩ pull-up resistor on the active-low RESET output. This eliminates the need for an external pull-up in most standard CMOS/TTL applications, reducing BOM count and simplifying layout-confirmed in the "DC Electrical Characteristics" table under "Internal Pull-Up Resistor".
Is DS1233DZ-15+T&R compatible with pushbutton reset functionality?
No, DS1233DZ-15+T&R does not support pushbutton reset. The EconoReset Selection Guide explicitly lists "N/A" for pushbutton detect parameters, distinguishing it from non-"D" variants like DS1233-15. Its sole function is power-supply monitoring and automatic reset generation.
What package type is used for DS1233DZ-15+T&R?
DS1233DZ-15+T&R is supplied in the SOT-223-4 surface-mount package, featuring four terminals including a dedicated thermal pad (PIN 4). This differs from the 3-pin TO-92 and SOT-23 variants, and provides improved thermal performance for sustained operation in enclosed industrial enclosures.
How long is the reset pulse duration for DS1233DZ-15+T&R after power recovery?
The DS1233DZ-15+T&R holds the RESET pin active for 250–450 ms after VCC returns to within tolerance, with 350 ms typical. This timing is internally generated and does not require external capacitors, ensuring consistent reset duration across temperature and voltage variations as specified in the AC Electrical Characteristics table.
DS1233DZ-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
DS1233DZ-15+T&R FAQ
1.How can I place an order for DS1233DZ-15+T&R through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1233DZ-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 DS1233DZ-15+T&R reliable?
The price and inventory of DS1233DZ-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 DS1233DZ-15+T&R is usually 5 days.
3.What payment methods are accepted for DS1233DZ-15+T&R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1233DZ-15+T&R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1233DZ-15+T&R?
DS1233DZ-15+T&R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1233DZ-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 DS1233DZ-15+T&R?
For technical support, including DS1233DZ-15+T&R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1233DZ-15+T&R requirements.
6.How does Aetrix verify that DS1233DZ-15+T&R is sourced from the original manufacturer or authorized distributors?
All DS1233DZ-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 DS1233DZ-15+T&R meets industry standards.
7.What is the process for return or replacement of DS1233DZ-15+T&R?
All DS1233DZ-15+T&R units undergo pre-shipment inspection (PSI). If there is an issue with DS1233DZ-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 DS1233DZ-15+T&R part is unused and in its original packaging.
Return procedure for DS1233DZ-15+T&R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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