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Analog Devices Inc./Maxim Integrated DS1833Z-5/T&R
- Part No.:
- DS1833Z-5/T&R
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
DS1833Z-5/T&R.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT223-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,671
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Product details
Overview
DS1833Z-5/T&R from Maxim Integrated (now Analog Devices) is a precision 5V microprocessor supervisory circuit with ±5% VCC trip point, 350 ms reset pulse width, and internal 5 kΩ pull-up resistor in SOT-223 package. It monitors power supply integrity and asserts active-high reset during out-of-tolerance conditions, used in embedded controllers requiring reliable power-on reset sequencing.
For engineers reviewing the DS1833Z-5/T&R datasheet, DS1833Z-5/T&R pinout, DS1833Z-5/T&R application, or DS1833Z-5/T&R equivalent, key selection criteria include VCC trip accuracy (4.5–4.74 V), reset timeout stability (-40°C to +85°C), SOT-223 thermal performance, and compatibility with 5V logic-level microcontrollers.
Technical Context
The DS1833Z-5/T&R implements a temperature-compensated voltage reference and comparator to detect VCC deviations beyond ±5% of 5 V. Its internal reset generator holds RST high for 250–450 ms after VCC recovery, ensuring stable processor initialization.
It operates with 1.2–5.5 V supply range but is factory-trimmed for 5 V ±5% detection threshold (VCCTP1 = 4.5–4.74 V). The device draws only 1.5–2 mA quiescent current and features TTL/CMOS-compatible active-high open-drain RST output with 0.4 V low-level voltage and 8 mA sink capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Trip Point | 4.5–4.74 V (±5% of 5 V); ensures reset assertion before 5V rail drops below microcontroller minimum operating voltage |
| Reset Pulse Width | 250–450 ms; guarantees sufficient stabilization time for 5V-powered MCUs and peripherals post-power-up |
| Operating Current | 1.5–2 mA; enables low-power system monitoring without significant load on 5V supply rail |
| RST Output Type | Active-high open-drain; supports wired-OR reset bus configurations and level-shifting via external pull-up |
| Internal Pull-Up | 3.75–6.25 kΩ; eliminates need for external resistor in basic 5V systems with standard logic thresholds |
| Temperature Range | -40°C to +85°C; validated for industrial-grade embedded applications without derating |
| VCC Slew Rate Support | 300 µs (4.75 V → 4.00 V); accommodates typical 5V DC-DC converter transient behavior |
Pinout & Package
SOT-223 package with 4-pin configuration: Pin 1 = Ground, Pin 2 = Reset (active-high open-drain), Pin 3 = VCC, Pin 4 = Ground (thermal pad connection).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Ground | Primary ground reference for comparator and reset logic; connects to PCB thermal pad for heat dissipation |
| Pin 2 | Reset Output | Active-high open-drain signal; requires external pull-up for CMOS/TTL interface; drives MCU /RESET pin |
| Pin 3 | VCC Supply | Monitored 5V input; powers internal reference and comparator; tolerates 1.2–5.5 V operation range |
| Pin 4 | Ground (Thermal) | Dedicated thermal ground pad; improves thermal resistance and long-term reliability under continuous operation |
Key Features
| Feature | Design Value |
|---|---|
| ±5% VCC trip accuracy | Factory-trimmed threshold (4.5–4.74 V) eliminates calibration overhead in 5V systems |
| 350 ms nominal reset timeout | Guaranteed minimum 250 ms hold time ensures robust MCU boot even with slow-rising 5V rails |
| Integrated 5 kΩ pull-up resistor | Reduces BOM count by one component in standard 5V logic interfaces |
| Temperature-compensated reference | Maintains trip point stability across -40°C to +85°C without external compensation |
| Low 2 mA operating current | Minimizes impact on 5V supply budget in power-constrained embedded designs |
Applications
| Industrial PLC Controller | Medical Diagnostic Device |
|---|---|
Use Scenario: Power cycling during field maintenance or brownout events in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-high reset to ARM Cortex-M7 MCU until 5V rail stabilizes post-recovery. Use Value: Prevents firmware corruption by enforcing 250+ ms reset hold time after 5V returns within ±5% tolerance. | Use Scenario: Battery-backed 5V subsystem powering FPGA-based imaging pipeline during AC loss. IC Role / Device Role / Timing Role: Monitors main 5V supply and triggers controlled shutdown sequence via RST assertion before voltage collapse. Use Value: Enables deterministic state capture and safe register save using guaranteed 350 ms reset window. |
| Point-of-Sale Terminal | Smart Energy Meter |
Use Scenario: Frequent plug/unplug of 5V adapter in retail environments causing rapid VCC transients. IC Role / Device Role / Timing Role: Detects sub-4.5 V dips and holds RST high for ≥250 ms to prevent partial MCU boot and flash write errors. Use Value: Eliminates field failures caused by incomplete firmware updates due to marginal 5V supply noise. | Use Scenario: Dual-supply meter with 5V logic domain powered from isolated DC-DC converter. IC Role / Device Role / Timing Role: Provides precise 5V supervision independent of 3.3V or 1.8V domains, interfacing directly with metering SoC /RESET pin. Use Value: Ensures synchronized reset across all voltage domains using single-point 5V monitoring with ±5% accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326US31D3+ | 3.08 V fixed trip point; 200 ms reset timeout; no internal pull-up; SOT-23-3 package | Designed for 3.3V systems; requires external pull-up and cannot monitor 5V rails directly | Select only if migrating to 3.3V logic and redesigning reset network |
| TPS3808G33DBVR | 3.3 V trip point; adjustable reset delay (0–10 s); 1.5 µA quiescent current; SOT-23-6 | Ultra-low-power biasing; supports programmable delay but lacks 5V ±5% trip accuracy | Prefer for battery-operated 3.3V devices where timing flexibility outweighs 5V precision |
Compared with MAX6326US31D3+ and TPS3808G33DBVR, the DS1833Z-5/T&R uniquely delivers factory-trimmed 5V ±5% detection with integrated pull-up and SOT-223 thermal performance-making it optimal for cost-sensitive, thermally demanding 5V industrial controllers where pin count and BOM simplicity matter.
Availability
DS1833Z-5/T&R is available at Aetrix Electronics and suitable for industrial PLC controllers, medical diagnostic devices, point-of-sale terminals, and smart energy meters requiring stable component supply and long-term manufacturability.
Supply support for DS1833Z-5/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 precision analog, mixed-signal, and power management ICs for industrial, automotive, and communications infrastructure.
The DS1833Z-5/T&R belongs to Maxim's EconoReset family-engineered for cost-effective, high-reliability power supervision in 5V microcontroller systems without sacrificing accuracy or thermal robustness.
FAQ
What is the exact VCC trip voltage range for DS1833Z-5/T&R?
The DS1833Z-5/T&R has a guaranteed VCC trip point of 4.5 V (min) to 4.74 V (max), corresponding to ±5% tolerance around 5 V. This range is factory-trimmed and tested per the DS1833 datasheet's DC Electrical Characteristics table under VCCTP1 parameter. The DS1833Z-5/T&R maintains this accuracy across its full -40°C to +85°C operating temperature range without external calibration.
Does DS1833Z-5/T&R require an external pull-up resistor on the RST pin?
No, the DS1833Z-5/T&R integrates a 3.75–6.25 kΩ internal pull-up resistor on the RST pin, eliminating the need for an external component in standard 5V systems. This feature reduces BOM count and PCB area while maintaining TTL/CMOS-compatible logic levels. The DS1833Z-5/T&R RST output remains active-high open-drain, allowing wired-OR configurations when multiple supervisors share a common reset bus.
What is the reset timeout duration of DS1833Z-5/T&R after VCC recovery?
The DS1833Z-5/T&R holds the RST pin active high for 250–450 ms after VCC returns to within its ±5% trip threshold. The typical value is 350 ms, providing sufficient margin for 5V power supply and microprocessor stabilization. This timing is internally generated and does not depend on external capacitors or resistors-ensuring consistent behavior across DS1833Z-5/T&R units and operating conditions.
Can DS1833Z-5/T&R be used with 3.3V microcontrollers?
Yes, the DS1833Z-5/T&R can interface with 3.3V microcontrollers because its RST output is open-drain and compatible with mixed-voltage systems. However, its VCC trip point is fixed at 5V ±5%, so it must monitor a 5V rail-not a 3.3V rail. The DS1833Z-5/T&R is intended for 5V logic domains; for 3.3V supervision, select a part like DS1833-33 or MAX6326 series with appropriate trip voltage.
What package type is used for DS1833Z-5/T&R?
The DS1833Z-5/T&R uses the SOT-223 package, a surface-mount 4-pin outline with an exposed thermal pad (Pin 4). This package provides superior thermal performance over TO-92 or SOT-23 variants, supporting continuous operation in industrial environments. The DS1833Z-5/T&R pinout is Pin 1 = GND, Pin 2 = RST, Pin 3 = VCC, Pin 4 = GND (thermal pad), as confirmed in Maxim's mechanical drawings and datasheet Figure 2.
DS1833Z-5/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:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.625V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 250ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-223-3
DS1833Z-5/T&R FAQ
1.How can I place an order for DS1833Z-5/T&R through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1833Z-5/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 DS1833Z-5/T&R reliable?
The price and inventory of DS1833Z-5/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 DS1833Z-5/T&R is usually 5 days.
3.What payment methods are accepted for DS1833Z-5/T&R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1833Z-5/T&R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1833Z-5/T&R?
DS1833Z-5/T&R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1833Z-5/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 DS1833Z-5/T&R?
For technical support, including DS1833Z-5/T&R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1833Z-5/T&R requirements.
6.How does Aetrix verify that DS1833Z-5/T&R is sourced from the original manufacturer or authorized distributors?
All DS1833Z-5/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 DS1833Z-5/T&R meets industry standards.
7.What is the process for return or replacement of DS1833Z-5/T&R?
All DS1833Z-5/T&R units undergo pre-shipment inspection (PSI). If there is an issue with DS1833Z-5/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 DS1833Z-5/T&R part is unused and in its original packaging.
Return procedure for DS1833Z-5/T&R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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