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Analog Devices Inc./Maxim Integrated DS1233DZ-15
- Part No.:
- DS1233DZ-15
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
DS1233DZ-15.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT223-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,213
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Product details
Overview
DS1233DZ-15 from Maxim Integrated (now Analog Devices) is a precision 5V microprocessor supervisory circuit with 15% VCC trip point (4.0–4.24 V), 350 ms reset pulse width, 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 datasheet, DS1233DZ-15 pinout, DS1233DZ-15 application, or DS1233DZ-15 equivalent, key selection criteria include guaranteed reset assertion at VCC < 4.0 V, 350 ms minimum reset timeout after recovery, TO-92/SOT-223 package compatibility, -40°C to +85°C operation, and absence of manual reset input.
Technical Context
The DS1233DZ-15 implements a temperature-compensated voltage reference and comparator to detect VCC droop below its 15% threshold (4.0–4.24 V). It generates an open-drain active-low RESET signal with 350 ms minimum assertion time after VCC returns to tolerance.
No external components are required for basic operation due to integrated 5 kΩ pull-up resistor and precise trip-point hysteresis. The device lacks pushbutton reset detection-confirmed by "N/A" entries in the EconoReset Selection Guide for DS1233D-15.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Trip Point | 4.0–4.24 V (15% under 5 V; guarantees reset assert before brownout) |
| Reset Pulse Width | 250–450 ms (ensures stable processor boot after power recovery) |
| Operating Temp | -40°C to +85°C (supports industrial-grade embedded deployment) |
| Supply Voltage Range | 1.2–5.5 V (allows operation across wide VCC margin) |
| Output Type | Open-drain RESET with internal 3.75–6.25 kΩ pull-up (simplifies interface to 5 V logic) |
| Reset Threshold Accuracy | ±5% over temp (tight tolerance enables reliable 5 V system monitoring) |
Pinout & Package
DS1233DZ-15 is available in TO-92 (3-pin) and SOT-223 (4-pin) packages. Pin assignments differ: TO-92 uses pins 1=GND, 2=RESET, 3=VCC; SOT-223 adds pin 4=GND (thermal pad tied to ground).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PIN 1 (TO-92) PIN 1 (SOT-223) | Ground | Reference node for voltage sensing and output driver; must be low-impedance connection |
| PIN 2 (TO-92) PIN 2 (SOT-223) | RESET (active-low open-drain) | Drives microprocessor /RESET input; requires external pull-up if internal resistor insufficient |
| PIN 3 (TO-92) PIN 3 (SOT-223) | VCC | Power supply input monitored for 15% undervoltage condition |
| PIN 4 (SOT-223 only) | Ground (thermal) | Enhanced thermal dissipation path; electrically connected to PIN 1 |
Key Features
| Feature | Design Value |
|---|---|
| 15% VCC trip point | Enables robust brownout detection for 5 V systems where 4.0–4.24 V defines safe operating floor |
| 350 ms reset timeout | Guarantees sufficient stabilization time for microprocessor clocks, PLLs, and memory initialization |
| Internal 5 kΩ pull-up | Eliminates need for external resistor in standard 5 V CMOS reset interfaces |
| Temperature-compensated reference | Maintains ±5% trip accuracy across full -40°C to +85°C range without calibration |
Applications
| Industrial PLC Controller | Point-of-Sale Terminal |
|---|---|
Use Scenario: Power interruption during transaction processing risks data corruption and firmware lockup. IC Role / Device Role / Timing Role: DS1233DZ-15 continuously monitors 5 V rail and forces hard reset if VCC drops below 4.0 V, preventing partial execution. Use Value: Ensures deterministic restart after brownout, eliminating need for watchdog timer fallback or manual reboot. | Use Scenario: Unstable AC/DC adapter output causes intermittent resets in retail kiosks deployed in high-temperature environments. IC Role / Device Role / Timing Role: DS1233DZ-15 provides accurate 15% undervoltage detection and 350 ms reset hold to accommodate slow-ramping SMPS outputs. Use Value: Prevents spurious resets during marginal power conditions while guaranteeing clean boot on full recovery. |
| Medical Diagnostic Handheld | Smart Energy Meter |
Use Scenario: Battery-backed 5 V supply experiences gradual sag during discharge cycles, risking unsafe MCU operation. IC Role / Device Role / Timing Role: DS1233DZ-15 triggers reset when VCC falls to 4.0 V, aligning with battery end-of-life cutoff and preserving flash write integrity. Use Value: Enables graceful shutdown sequence before voltage collapse, protecting calibration data and usage logs. | Use Scenario: Meters installed in outdoor substations face wide ambient temperature swings (-40°C to +85°C) and noisy power lines. IC Role / Device Role / Timing Role: DS1233DZ-15 delivers stable 15% trip point across full temperature range with no external compensation. Use Value: Eliminates false resets caused by temperature-induced reference drift, ensuring continuous metering uptime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory 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 | Higher trip threshold suits systems requiring tighter 5 V regulation; shorter timeout may not stabilize slower processors | Select when precise 4.63 V detection and minimal board space are prioritized over long reset hold |
| TPS3808G15DBVR | Adjustable trip (0.4–5 V), 200 ms min timeout, enable input, SOT-23-6 package | Requires external resistor divider; supports programmable thresholds and manual reset initiation | Choose when design flexibility (e.g., multi-rail monitoring or user-triggered reset) outweighs simplicity of DS1233DZ-15 |
Compared with MAX809SEUR+T and TPS3808G15DBVR, the DS1233DZ-15 offers fixed 15% trip with guaranteed 350 ms reset hold and integrated pull-up-ideal for cost-sensitive, space-constrained 5 V microcontroller designs where simplicity and reliability are primary.
Availability
DS1233DZ-15 is available at Aetrix Electronics and suitable for industrial PLC controllers, point-of-sale terminals, medical handheld diagnostics, and smart energy meters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for DS1233DZ-15 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 applications.
The DS1233DZ-15 belongs to the EconoReset family of supervisory circuits engineered for low-cost, high-reliability power monitoring in 5 V microprocessor systems without manual reset requirements.
FAQ
What is the exact VCC trip point range for DS1233DZ-15?
The DS1233DZ-15 has a guaranteed VCC trip point range of 4.0 V to 4.24 V at +25°C, corresponding to 15% undervoltage relative to nominal 5 V. This range is maintained with ±5% accuracy over the full -40°C to +85°C operating temperature range, per DC Electrical Characteristics table in the official datasheet.
Does DS1233DZ-15 support manual reset via pushbutton?
No, DS1233DZ-15 does not support manual reset. The EconoReset Selection Guide explicitly lists "N/A" for pushbutton detect parameters for all DS1233D variants, including DS1233DZ-15. Its function is strictly power-supply monitoring with automatic reset assertion and release.
What package options are available for DS1233DZ-15?
DS1233DZ-15 is offered in both TO-92 (3-pin through-hole) and SOT-223 (4-pin surface-mount) packages. The SOT-223 variant includes an additional ground pin (PIN 4) for improved thermal performance, while TO-92 uses standard 3-pin layout with GND–RESET–VCC ordering.
Is the internal pull-up resistor on DS1233DZ-15 sufficient for driving standard 5 V microprocessor /RESET inputs?
Yes-the DS1233DZ-15 integrates a 3.75–6.25 kΩ pull-up resistor, which meets typical 5 V CMOS input requirements (e.g., ≤10 kΩ load). For high-capacitance buses or noise-prone environments, an external pull-up may still be recommended, but no external resistor is required for basic functionality per datasheet guidance.
How does DS1233DZ-15 ensure reliable reset timing during power-up and power-down events?
DS1233DZ-15 guarantees ≥250 ms (typical 350 ms) reset assertion after VCC rises above trip threshold, allowing full power supply and microprocessor stabilization. During power-down, it asserts reset within 100 ns of VCC crossing the trip point, preventing erratic operation during brownout transitions.
DS1233DZ-15 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- EconoReset
- Package/Case:
- TO-261-4, TO-261AA
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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 FAQ
1.How can I place an order for DS1233DZ-15 through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1233DZ-15 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 reliable?
The price and inventory of DS1233DZ-15 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 is usually 5 days.
3.What payment methods are accepted for DS1233DZ-15?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1233DZ-15 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1233DZ-15?
DS1233DZ-15 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1233DZ-15 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?
For technical support, including DS1233DZ-15 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1233DZ-15 requirements.
6.How does Aetrix verify that DS1233DZ-15 is sourced from the original manufacturer or authorized distributors?
All DS1233DZ-15 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 meets industry standards.
7.What is the process for return or replacement of DS1233DZ-15?
All DS1233DZ-15 units undergo pre-shipment inspection (PSI). If there is an issue with DS1233DZ-15, 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 part is unused and in its original packaging.
Return procedure for DS1233DZ-15:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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