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Analog Devices Inc./Maxim Integrated DS1833-15+T&R/STR
- Part No.:
- DS1833-15+T&R/STR
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Datasheet:
-
DS1833-15+T&R/STR.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,966
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Product details
Overview
DS1833-15+T&R/STR from Maxim Integrated (now Analog Devices) is a precision 5V microprocessor supervisory circuit with 15% VCC trip point tolerance, active-high reset output, and guaranteed 350 ms reset pulse width after power recovery. It features an internal 5 kΩ pull-up resistor, operates from -40°C to +85°C, and monitors 5V power supplies in embedded control systems requiring reliable power-on reset and brownout detection.
For engineers reviewing the DS1833-15+T&R/STR datasheet, DS1833-15+T&R/STR pinout, DS1833-15+T&R/STR application, or DS1833-15+T&R/STR equivalent, key selection considerations include VCC trip threshold (4.0–4.24 V), reset assertion timing (250–450 ms), operating current (1.5–2 mA), SOT-223 package configuration, and compatibility with 5V microcontroller power rails.
Technical Context
The DS1833-15+T&R/STR integrates a temperature-compensated voltage reference and comparator to detect VCC deviations beyond ±15% of nominal 5V. Its internal logic asserts RST high on undervoltage and holds it active for ≥250 ms after VCC returns within tolerance-ensuring stable processor initialization.
It delivers a push-pull reset output with VOL ≤ 0.4 V at 8 mA sink capability, requires no external components for basic operation, and supports fast VCC slew rate detection (tF = 300 µs for 4.75 V → 4.00 V transition), making it suitable for noisy industrial power environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Trip Point | 4.0–4.24 V (15% under 5V); triggers reset when supply drops below this window |
| Reset Pulse Width | 250–450 ms; ensures sufficient stabilization time for microprocessor and peripherals |
| Operating Current | 1.5–2 mA; enables low-power system monitoring without burdening supply |
| Output Sink Current | 8 mA at VOL ≤ 0.4 V; drives standard CMOS/TTL reset inputs directly |
| Internal Pull-Up | 3.75–6.25 kΩ; eliminates need for external resistor on RST line |
| Temperature Range | -40°C to +85°C; qualified for industrial-grade embedded applications |
Pinout & Package
SOT-223 surface-mount package with 4-pin configuration (Pin 1: Ground, Pin 2: Reset, Pin 3: VCC, Pin 4: Ground). Dual ground pins improve noise immunity and thermal dissipation in compact PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Ground | Primary reference node for internal comparator and output stage |
| Pin 2 | Reset (RST) | Active-high open-drain/push-pull output; asserts high during fault or power-up |
| Pin 3 | VCC | Power supply input and monitored rail; powers internal reference and logic |
| Pin 4 | Ground | Secondary ground connection; reduces ground bounce in high-noise environments |
Key Features
| Feature | Design Value |
|---|---|
| 15% VCC trip accuracy | Guarantees consistent brownout detection across temperature and process variation |
| 350 ms typical reset hold time | Meets JEDEC JESD8-12A power-up timing requirements for 5V microcontrollers |
| Integrated 5 kΩ pull-up | Reduces BOM count and layout area; eliminates external resistor placement error risk |
| Temperature-compensated reference | Maintains trip point stability over -40°C to +85°C without calibration |
| Low quiescent current | Minimizes standby power draw in battery-backed or energy-sensitive systems |
Applications
| Industrial PLC Controller | Smart Meter Power Management |
|---|---|
Use Scenario: Power interruption during firmware update or sensor polling in factory automation. IC Role / Device Role / Timing Role: Supervisory reset generator ensuring safe MCU restart after brownout. Use Value: Prevents corrupted flash writes by holding reset until 5V rail stabilizes for ≥350 ms post-recovery. | Use Scenario: Mains voltage sag during grid load switching affecting metrology IC operation. IC Role / Device Role / Timing Role: VCC monitor asserting active-high reset to halt metering sequence during undervoltage. Use Value: Trip point of 4.0–4.24 V aligns with IEC 62053-21 AC voltage tolerance limits for Class 1 meters. |
| Medical Diagnostic Device | Automotive Body Control Module |
Use Scenario: Battery backup switchover during main supply loss in portable ultrasound units. IC Role / Device Role / Timing Role: Power-fail detector initiating controlled shutdown and state save before reset assertion. Use Value: Internal reference stability ensures accurate trip point across medical-grade temperature range (-40°C to +85°C). | Use Scenario: Load-dump transients causing 5V rail collapse in infotainment subsystems. IC Role / Device Role / Timing Role: Brownout protector preventing erratic CAN controller behavior during voltage dips. Use Value: Fast VCC detect-to-RST delay (≤100 ns) enables immediate response to rapid rail collapse events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX690TSA+ | 5V supply monitor with 4.63 V trip (±1.5%), 200 ms reset timeout, no internal pull-up | Higher trip accuracy but shorter reset hold time; requires external pull-up | Preferred where tighter VCC threshold tolerance is critical and board space allows external resistor |
| TPS3808G15DBVR | Adjustable 5V supervisor with 1.25 V reference input, 200 ms min reset delay, 1.5 µA quiescent current | Lower power consumption but requires external resistor network for trip setting | Selected for ultra-low-power battery-operated devices needing programmable trip points |
Compared with DS1833-15+T&R/STR, MAX690TSA+ offers higher trip accuracy but lacks integrated pull-up and shorter reset duration, while TPS3808G15DBVR enables flexible threshold design at microamp-level current draw-making DS1833-15+T&R/STR optimal for cost-sensitive, fixed-threshold 5V systems requiring minimal external components.
Availability
DS1833-15+T&R/STR is available at Aetrix Electronics and suitable for industrial control, smart metering, medical diagnostics, and automotive body electronics requiring stable component supply and long-term manufacturability.
Supply support for DS1833-15+T&R/STR 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 precision analog, mixed-signal, and power management ICs for industrial, automotive, and healthcare applications.
The DS1833-15+T&R/STR belongs to Maxim's EconoReset™ family of supervisory circuits, engineered for cost-effective, single-chip power monitoring in resource-constrained embedded systems with fixed 5V rails.
FAQ
What is the exact VCC trip voltage range for DS1833-15+T&R/STR?
The DS1833-15+T&R/STR has a guaranteed VCC trip point range of 4.0 V to 4.24 V at 25°C, corresponding to a nominal 5V supply with ±15% tolerance. This specification is validated across the full operating temperature range (-40°C to +85°C) and accounts for device-to-device variation per the datasheet's DC electrical characteristics table.
Does DS1833-15+T&R/STR require an external pull-up resistor on the RST pin?
No, DS1833-15+T&R/STR includes an internal pull-up resistor ranging from 3.75 kΩ to 6.25 kΩ, eliminating the need for an external component. This simplifies PCB layout and reduces BOM count while maintaining compatible drive strength for standard microcontroller reset inputs.
How long does the reset signal remain active after VCC recovers to tolerance?
The DS1833-15+T&R/STR holds the RST output active for 250–450 ms after VCC returns to within its trip threshold window. The typical value is 350 ms, providing sufficient margin for power supply and microprocessor stabilization before release-meeting common JEDEC and ARM-based boot timing requirements.
Is DS1833-15+T&R/STR compatible with 3.3V microcontrollers?
No, DS1833-15+T&R/STR is specifically designed for 5V systems and monitors a 5V supply rail. Its trip point (4.0–4.24 V) and absolute maximum ratings (VCC up to 5.5 V) do not support direct use with 3.3V logic families. For 3.3V applications, consider the DS1833-10 variant or dedicated 3.3V supervisors like the MAX6326.
What package type is used for DS1833-15+T&R/STR?
DS1833-15+T&R/STR is supplied in the SOT-223 surface-mount package, featuring four terminals (GND, RST, VCC, GND) and optimized for automated assembly and thermal performance in space-constrained industrial PCBs.
DS1833-15+T&R/STR 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:
- 4.125V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 250ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92-3
DS1833-15+T&R/STR FAQ
1.How can I place an order for DS1833-15+T&R/STR through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1833-15+T&R/STR 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 DS1833-15+T&R/STR reliable?
The price and inventory of DS1833-15+T&R/STR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS1833-15+T&R/STR is usually 5 days.
3.What payment methods are accepted for DS1833-15+T&R/STR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1833-15+T&R/STR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1833-15+T&R/STR?
DS1833-15+T&R/STR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1833-15+T&R/STR 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 DS1833-15+T&R/STR?
For technical support, including DS1833-15+T&R/STR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1833-15+T&R/STR requirements.
6.How does Aetrix verify that DS1833-15+T&R/STR is sourced from the original manufacturer or authorized distributors?
All DS1833-15+T&R/STR 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 DS1833-15+T&R/STR meets industry standards.
7.What is the process for return or replacement of DS1833-15+T&R/STR?
All DS1833-15+T&R/STR units undergo pre-shipment inspection (PSI). If there is an issue with DS1833-15+T&R/STR, 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 DS1833-15+T&R/STR part is unused and in its original packaging.
Return procedure for DS1833-15+T&R/STR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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