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Analog Devices Inc./Maxim Integrated DS1233Z-10+
- Part No.:
- DS1233Z-10+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
DS1233Z-10+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT223-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,289
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Product details
Overview
DS1233Z-10+ from Analog Devices is a precision 5V microprocessor supervisory circuit in SOT-223 package, providing power-on reset, power-fail detection, and pushbutton-initiated reset with 350ms active-low reset pulse duration. It monitors VCC at 4.25V to 4.49V trip point (10% tolerance), features internal 5kΩ pull-up, and operates across –40°C to +85°C for embedded control systems.
For engineers reviewing the DS1233Z-10+ datasheet, DS1233Z-10+ pinout, DS1233Z-10+ application, or DS1233Z-10+ equivalent, key selection criteria include guaranteed 350ms reset timeout, 10% VCC threshold accuracy, SOT-223 thermal performance, pushbutton debounce capability, and RoHS-compliant lead-free packaging.
Technical Context
The DS1233Z-10+ integrates a temperature-compensated voltage reference and comparator to detect VCC deviations beyond ±10% of 5V (4.25V–4.49V). Its internal 350ms delay timer ensures reset remains asserted after VCC recovery or pushbutton release, preventing premature processor startup.
It supports dual reset initiation modes: automatic power-monitoring reset and external pushbutton reset with hardware debouncing. The RST pin serves as both output and input-sensing low-going edges for button press detection and driving active-low reset to the microprocessor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Trip Point | 4.25V to 4.49V (10% tolerance); ensures reliable reset assertion before 5V rail drops below microprocessor minimum operating voltage |
| Reset Pulse Duration | 250–450ms (typ. 350ms); guarantees sufficient stabilization time for CPU and peripheral power domains |
| Operating Temperature | –40°C to +85°C; validated for industrial-grade embedded systems without derating |
| Supply Voltage Range | 1.2V to 5.5V; enables compatibility with 5V logic families while supporting brown-out detection down to 1.2V |
| Internal Pull-Up Resistor | 3.75kΩ to 6.25kΩ (typ. 5kΩ); eliminates need for external pull-up in standard open-drain reset configurations |
| Pushbutton Detect Threshold | 1.8V to 3.3V; accommodates TTL/CMOS logic levels and tolerates switch contact bounce without false triggering |
| Quiescent Current | 50μA max; minimizes standby power impact in battery-backed or energy-sensitive applications |
Pinout & Package
SOT-223 package (4-pin, surface-mount) with exposed thermal pad; pin 4 is dedicated ground for improved noise immunity and thermal dissipation in high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | GROUND | Primary ground reference for internal comparator and reference circuitry |
| Pin 2 | RESET (RST) | Open-drain active-low reset output; also senses external pushbutton closure via edge detection |
| Pin 3 | VCC | Power supply input and monitored rail; connects directly to 5V system rail for voltage supervision |
| Pin 4 | GROUND | Dedicated second ground terminal; reduces ground loop impedance and improves reset timing stability |
Key Features
| Feature | Design Value |
|---|---|
| 350ms guaranteed reset timeout | Ensures full power rail and microprocessor stabilization before release-no external RC timing components required |
| Integrated pushbutton debounce | Hardware-based 250–450ms debounce eliminates firmware polling or external filter capacitors |
| Precision 10% VCC threshold | Temperature-compensated reference maintains ±10% trip accuracy over full –40°C to +85°C range |
| Internal 5kΩ pull-up resistor | Reduces BOM count by removing external pull-up; compatible with standard 5V microprocessor reset inputs |
| SOT-223 thermal performance | Exposed pad enables direct thermal coupling to PCB copper, supporting continuous operation at 85°C ambient |
Applications
| Industrial PLC Controller | Medical Diagnostic Device |
|---|---|
Use Scenario: Power cycling during field maintenance or transient AC line sags. IC Role / Device Role / Timing Role: Supervisory IC asserting active-low reset to ARM Cortex-M7 MCU until 5V rail stabilizes for ≥350ms post-recovery. Use Value: Prevents corrupted register states or flash write errors during marginal power conditions. |
Use Scenario: Emergency manual reset via front-panel pushbutton during diagnostic mode. IC Role / Device Role / Timing Role: Debounces mechanical switch and delivers clean 350ms reset pulse to safety-critical FPGA configuration logic. Use Value: Eliminates risk of partial reconfiguration or metastability due to switch bounce. |
| Smart Energy Meter | Automotive Infotainment Head Unit |
Use Scenario: Battery backup switchover during main power loss in utility metering. IC Role / Device Role / Timing Role: Monitors 5V DC-DC output and asserts reset when voltage falls below 4.25V, ensuring EEPROM write integrity. Use Value: Guarantees atomic storage of tariff data and consumption logs during brownout events. |
Use Scenario: Cold crank condition causing 5V rail dip below specification during engine start. IC Role / Device Role / Timing Role: Detects VCC sag to 4.25V and holds reset active for 350ms after recovery to prevent DSP lockup. Use Value: Maintains audio subsystem reliability without requiring complex watchdog firmware intervention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD1T1G | Fixed 3.08V reset threshold; no pushbutton monitoring; SOT-23-3 package | Limited to 3.3V systems; lacks external reset initiation capability | Select only if 3.3V rail supervision suffices and pushbutton reset is handled separately |
| TPS3808G12DBVR | Adjustable reset threshold (0.405V–5.8V); 200ms min timeout; requires external resistor divider | Higher design flexibility but adds BOM cost and layout complexity | Prefer when precise threshold tuning or longer timeout (>350ms) is required |
Compared with MAX809TRD1T1G and TPS3808G12DBVR, the DS1233Z-10+ uniquely combines fixed 10%-tolerance 5V supervision, integrated pushbutton debounce, and SOT-223 thermal robustness-enabling simpler, more reliable reset architecture in space-constrained industrial 5V systems.
Availability
DS1233Z-10+ is available at Aetrix Electronics and suitable for industrial PLC controllers, medical diagnostic devices, smart energy meters, and automotive infotainment head units requiring stable component supply with guaranteed long-term availability.
Supply support for DS1233Z-10+ 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The DS1233Z-10+ belongs to the EconoReset family-designed specifically for cost-sensitive, high-reliability microprocessor reset supervision in 5V embedded systems where simplicity, thermal resilience, and pushbutton integration are critical.
FAQ
What is the exact VCC trip point range for DS1233Z-10+?
The DS1233Z-10+ has a guaranteed VCC trip point range of 4.25V to 4.49V, corresponding to a nominal 5V supply with ±10% tolerance. This range is specified under –40°C to +85°C and is maintained by an internal temperature-compensated voltage reference. The DS1233Z-10+ uses this threshold to assert reset when VCC falls below the lower limit and hold it active for 350ms after recovery.
Does DS1233Z-10+ require an external capacitor on the RST pin?
Yes, DS1233Z-10+ requires a capacitor between 100pF and 0.01μF connected from RST to ground for proper pushbutton debounce operation. In applications needing higher reset sink current, a minimum 500pF capacitor plus a parallel 1kΩ external pull-up resistor is recommended. This capacitor is essential for noise filtering and edge-detection timing-the DS1233Z-10+ does not function correctly without it.
How does DS1233Z-10+ handle pushbutton reset initiation?
The DS1233Z-10+ monitors the RST pin for a low-going edge to detect pushbutton closure. Upon detection, it pulls RST low and debounces the switch internally. When the button is released (rising edge), DS1233Z-10+ asserts a clean 350ms active-low reset pulse. This dual-mode operation-combining power supervision and pushbutton reset-eliminates the need for separate reset ICs or firmware debounce routines.
Is DS1233Z-10+ pin-compatible with TO-92 versions like DS1233-10+?
No, DS1233Z-10+ is not pin-compatible with TO-92 versions such as DS1233-10+. DS1233Z-10+ uses a 4-pin SOT-223 package with two ground pins (pins 1 and 4), whereas DS1233-10+ uses a 3-pin TO-92 package. The pin assignments differ fundamentally-DS1233Z-10+ has dedicated ground pins for improved noise immunity, and its footprint and thermal pad require distinct PCB layout.
What is the maximum operating supply voltage for DS1233Z-10+?
The DS1233Z-10+ supports a maximum supply voltage of 5.5V on the VCC pin, with absolute maximum rating up to +7.0V (for short-duration stress only). Its operational range is specified from 1.2V to 5.5V, enabling use in 5V systems with margin for ripple or overshoot. The DS1233Z-10+ remains functional and maintains accurate reset behavior across this full range when used within recommended DC operating conditions.
DS1233Z-10+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- EconoReset
- Package/Case:
- TO-261-4, TO-261AA
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- 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 (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-223-3
DS1233Z-10+ FAQ
1.How can I place an order for DS1233Z-10+ through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1233Z-10+ 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+ reliable?
The price and inventory of DS1233Z-10+ 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+ is usually 5 days.
3.What payment methods are accepted for DS1233Z-10+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1233Z-10+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1233Z-10+?
DS1233Z-10+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1233Z-10+ 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+?
For technical support, including DS1233Z-10+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1233Z-10+ requirements.
6.How does Aetrix verify that DS1233Z-10+ is sourced from the original manufacturer or authorized distributors?
All DS1233Z-10+ 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+ meets industry standards.
7.What is the process for return or replacement of DS1233Z-10+?
All DS1233Z-10+ units undergo pre-shipment inspection (PSI). If there is an issue with DS1233Z-10+, 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+ part is unused and in its original packaging.
Return procedure for DS1233Z-10+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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