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Analog Devices Inc./Maxim Integrated DS1233Z-10/TR
- Part No.:
- DS1233Z-10/TR
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
DS1233Z-10/TR.pdf
- Description:
- IC SUPERVISOR DS1233 ECONORESET
- Quantity:
- Payment:
- Shipping:
Inventory:20,181
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Product details
Overview
DS1233Z-10/TR from Maxim Integrated is a 5V microprocessor supervisory circuit with 10% VCC trip point (4.25V–4.49V), 350ms reset pulse width, internal 5kΩ pull-up resistor, and pushbutton debounce functionality. It monitors power supply integrity and provides external reset control in embedded systems requiring reliable power-on and brownout reset behavior.
For engineers reviewing the DS1233Z-10/TR datasheet, DS1233Z-10/TR pinout, DS1233Z-10/TR application, or DS1233Z-10/TR equivalent, key selection criteria include VCC trip accuracy, reset timing consistency, SOT-223 package compatibility, pushbutton interface requirements, and industrial temperature range support.
Technical Context
The DS1233Z-10/TR implements dual-function supervision: precision voltage monitoring via a temperature-compensated bandgap reference and comparator, and edge-triggered pushbutton reset with hardware debouncing. Its reset assertion logic combines power-fail detection and release-edge detection on the RST pin.
It operates over -40°C to +85°C, draws ≤50µA quiescent current, and asserts RESET low for 250–450ms (typ. 350ms) after VCC recovery or pushbutton release. The device requires no external components beyond a 100pF–0.01µF capacitor from RST to ground for proper pushbutton operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Trip Point | 4.25V (min) to 4.49V (max); ensures reset activation during 10% undervoltage on 5V rail |
| Reset Pulse Width | 250–450ms (typ. 350ms); guarantees sufficient stabilization time for microprocessor and power supply |
| Operating Temperature | -40°C to +85°C; supports industrial-grade embedded deployment without derating |
| Supply Current | ≤50µA; enables low-power system design with negligible impact on standby consumption |
| Output Drive | 8mA sink capability at 0.4V; directly drives standard TTL/CMOS inputs without external buffer |
| Internal Pull-Up | 3.75–6.25kΩ; eliminates need for external resistor in basic pushbutton interface |
| Pushbutton Detect Threshold | 1.8V (min) to 3.3V (max); accommodates mechanical switch bounce and contact resistance variation |
Pinout & Package
SOT-223 surface-mount package (3-pin variant, drawing code K3-1*), thermally enhanced for PCB heat dissipation in space-constrained applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PIN 1 | GROUND | Primary reference node for internal comparator and reset driver; must be low-impedance connection to system ground plane |
| PIN 2 | RESET | Open-drain active-low output; serves as both reset signal source and pushbutton sense input |
| PIN 3 | VCC | Power supply input; monitored for out-of-tolerance condition; powers internal reference and logic |
Key Features
| Feature | Design Value |
|---|---|
| Automatic Power-Fail Reset | Asserts RESET immediately upon VCC falling below 4.25V, preventing processor corruption during brownout |
| Hardware Pushbutton Debounce | Internally filters mechanical switch bounce and generates clean 350ms reset pulse on release-no firmware or RC network required |
| Temperature-Compensated Reference | Ensures ±1.5% trip point stability across full -40°C to +85°C range, eliminating calibration drift |
| Integrated Pull-Up Resistor | 5kΩ nominal value reduces BOM count and PCB footprint versus discrete 10kΩ+ external pull-up |
| Low Quiescent Current | 50µA max enables use in battery-backed or energy-harvesting systems without compromising runtime |
Applications
| Industrial PLC Controller | Point-of-Sale Terminal |
|---|---|
Use Scenario: Power interruption during transaction processing causes partial EEPROM writes and state corruption. IC Role / Device Role / Timing Role: DS1233Z-10/TR acts as power supervisor and reset arbiter, holding microcontroller in reset until 5V rail stabilizes post-brownout. Use Value: Prevents inconsistent firmware state and data loss by enforcing minimum 350ms reset hold time after VCC recovery. |
Use Scenario: Customer-initiated hard reset via front-panel button must avoid spurious resets from switch chatter. IC Role / Device Role / Timing Role: DS1233Z-10/TR serves as pushbutton interface with built-in edge detection and 350ms pulse generation on release. Use Value: Eliminates need for software debounce routines or external RC filter, reducing firmware complexity and improving reliability. |
| Medical Diagnostic Handheld | Smart Energy Meter |
Use Scenario: Battery-powered device experiences voltage sag during LCD backlight activation, risking MCU lockup. IC Role / Device Role / Timing Role: DS1233Z-10/TR continuously monitors 5V rail derived from DC-DC converter, asserting RESET if VCC drops below 4.25V. Use Value: Guarantees deterministic restart before analog sensor acquisition begins, ensuring measurement repeatability. |
Use Scenario: Mains-powered meter must survive grid sags and recover cleanly without manual intervention. IC Role / Device Role / Timing Role: DS1233Z-10/TR provides both power-monitor reset and user-accessible reset via sealed membrane switch. Use Value: Dual-mode supervision meets IEC 62053-21 requirements for automatic recovery and field-service reset capability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TR | Fixed 3.08V reset threshold; no pushbutton debounce; 140ms reset timeout | Designed for 3.3V systems only; lacks external reset initiation capability | Select when only power-monitor function is needed and 3.3V supply is used |
| TPS3808G125DBVR | Adjustable reset threshold (0.4–5.8V); 200ms min reset pulse; requires external resistor divider | Higher quiescent current (12µA vs. 50µA); no integrated pushbutton interface | Choose for flexible threshold tuning in mixed-voltage designs where pushbutton reset is handled separately |
Compared with MAX809TR and TPS3808G125DBVR, the DS1233Z-10/TR uniquely integrates both precise 5V power monitoring and hardware pushbutton reset in a single 3-pin SOT-223 package-reducing component count and eliminating firmware debounce while maintaining industrial temperature operation.
Availability
DS1233Z-10/TR is available at Aetrix Electronics and suitable for industrial automation controllers, medical handheld diagnostics, smart energy meters, and point-of-sale terminals requiring stable component supply and long-term lifecycle support.
Supply support for DS1233Z-10/TR 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
Maxim Integrated (now part of Analog Devices) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, and communications applications.
The DS1233Z-10/TR belongs to Maxim's EconoReset™ family of supervisory circuits, designed specifically to replace discrete reset solutions in cost-sensitive, space-constrained microprocessor systems operating from 5V rails.
FAQ
What is the exact VCC trip point range for DS1233Z-10/TR?
The DS1233Z-10/TR has a guaranteed VCC trip point range of 4.25V (minimum) to 4.49V (maximum) at -40°C to +85°C, corresponding to a 10% tolerance on a nominal 5V supply. This specification is validated per the DS1233 full datasheet Section "DC Electrical Characteristics" and applies directly to the DS1233Z-10/TR variant.
Does DS1233Z-10/TR require an external capacitor for pushbutton operation?
Yes - DS1233Z-10/TR requires a capacitor between 100pF and 0.01µF connected from the RESET pin to ground to ensure reliable pushbutton debounce and release-edge detection. The datasheet specifies this as mandatory for proper external switch operation, and omitting it may cause erratic reset behavior or failure to detect button release.
What package type does DS1233Z-10/TR use, and is it RoHS-compliant?
DS1233Z-10/TR uses the SOT-223 package (3-pin variant, drawing code K3-1*) and is not RoHS/lead-free compliant, as confirmed in the Maxim part number table where DS1233Z-10/TR is explicitly marked "RoHS/Lead-Free: No". RoHS-compliant versions carry the "+" suffix (e.g., DS1233Z-10+).
Can DS1233Z-10/TR monitor voltages other than 5V?
No - DS1233Z-10/TR is factory-trimmed for 5V operation with a fixed 10% trip point (4.25V–4.49V). It does not support adjustable thresholds or alternate supply voltages. For 3.3V systems, Maxim offers the DS1233A-10 variant; for programmable thresholds, consider the TPS3808 series instead of DS1233Z-10/TR.
What is the maximum sink current capability of the DS1233Z-10/TR RESET output?
The DS1233Z-10/TR RESET output can sink up to +8mA while maintaining VOL ≤ 0.4V, as specified in the "DC Electrical Characteristics" table. This allows direct interfacing with standard TTL and CMOS inputs without external buffering, and exceeds the typical 1–2mA load of most microcontroller reset pins.
DS1233Z-10/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- TO-261-4, TO-261AA
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Power Supply Monitor
- 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
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-223
DS1233Z-10/TR FAQ
1.How can I place an order for DS1233Z-10/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1233Z-10/TR 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/TR reliable?
The price and inventory of DS1233Z-10/TR 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/TR is usually 5 days.
3.What payment methods are accepted for DS1233Z-10/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1233Z-10/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1233Z-10/TR?
DS1233Z-10/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1233Z-10/TR 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/TR?
For technical support, including DS1233Z-10/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1233Z-10/TR requirements.
6.How does Aetrix verify that DS1233Z-10/TR is sourced from the original manufacturer or authorized distributors?
All DS1233Z-10/TR 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/TR meets industry standards.
7.What is the process for return or replacement of DS1233Z-10/TR?
All DS1233Z-10/TR units undergo pre-shipment inspection (PSI). If there is an issue with DS1233Z-10/TR, 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/TR part is unused and in its original packaging.
Return procedure for DS1233Z-10/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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