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Analog Devices Inc./Maxim Integrated DS1233DZ-10/T&R
- Part No.:
- DS1233DZ-10/T&R
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
DS1233DZ-10/T&R.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT223-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,556
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Product details
Overview
DS1233DZ-10/T&R from Maxim Integrated (now Analog Devices) is a precision 5V microprocessor supervisory circuit with 10% VCC trip point (4.25–4.49 V), 350 ms reset timeout, 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-10/T&R datasheet, DS1233DZ-10/T&R pinout, DS1233DZ-10/T&R application, or DS1233DZ-10/T&R equivalent, key selection criteria include guaranteed 350 ms reset pulse width, ±10% VCC detection accuracy, TO-92/SOT-223 package compatibility, -40°C to +85°C operation, and integrated pull-up for direct microprocessor interface.
Technical Context
The DS1233DZ-10/T&R implements a temperature-compensated voltage reference and comparator to detect VCC deviations beyond ±10% of nominal 5 V. Its reset output remains asserted for 250–450 ms after VCC recovery, with typical 350 ms duration, ensuring stable processor boot sequencing.
It operates with supply voltages from 1.2 V to 5.5 V, draws only 50 µA quiescent current, and features TTL-compatible RST output with 0.4 V low-level voltage and +8 mA sink capability-enabling direct connection to 68XXX/HC16 reset inputs without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Trip Point | 4.25–4.49 V (±10% of 5 V); ensures reliable reset assertion before brownout affects microprocessor operation |
| Reset Timeout | 250–450 ms (typ. 350 ms); guarantees sufficient stabilization time for power supply and CPU after power-up or recovery |
| Supply Voltage Range | 1.2–5.5 V; supports wide-input operation including battery-backed or marginally regulated supplies |
| Quiescent Current | 50 µA; enables low-power system monitoring without significant standby drain |
| RST Output Drive | 0.4 V max at 8 mA sink; meets TTL logic low threshold for direct interface with 68XXX/HC16 reset pins |
| Internal Pull-Up | 3.75–6.25 kΩ; eliminates need for external pull-up resistor on RST line |
| Operating Temp | -40°C to +85°C; qualified for industrial-grade embedded applications |
Pinout & Package
DS1233DZ-10/T&R is supplied in SOT-223 package (4-pin, GND–RST–VCC–GND). Pin 1 and Pin 4 are internally connected to ground, enabling robust grounding for noise immunity in high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Ground | Primary ground reference for voltage sensing and reset logic; electrically tied to Pin 4 in SOT-223 |
| Pin 2 | RESET (active-low) | Open-drain output asserted low during power fault or startup; requires external pull-up if not using internal 5 kΩ resistor |
| Pin 3 | VCC | Power supply input monitored for ±10% tolerance; also powers internal reference and comparator |
| Pin 4 | Ground | Secondary ground terminal; improves thermal dissipation and reduces ground loop impedance in SOT-223 |
Key Features
| Feature | Design Value |
|---|---|
| Precision VCC monitoring | ±10% trip accuracy over full -40°C to +85°C range, enabled by temperature-compensated bandgap reference |
| Guaranteed reset pulse width | Minimum 250 ms ensures reliable CPU initialization even under fast-recovery power events |
| Integrated pull-up resistor | 5 kΩ internal pull-up eliminates discrete component count and layout area for RST line termination |
| Low quiescent current | 50 µA draw allows continuous supervision in battery-critical or energy-harvesting systems |
| Microprocessor compatibility | Direct interface with Motorola 68XXX and HC16 families via TTL-compatible RST output and timing profile |
Applications
| Industrial PLC Controller | Legacy Automotive ECU |
|---|---|
Use Scenario: Power monitoring in programmable logic controllers exposed to wide ambient temperature swings and noisy 24 V DC supplies converted to 5 V. IC Role / Device Role / Timing Role: Supervisory IC asserting active-low reset to ARM Cortex-M or 68HC11 MCU during undervoltage transients. Use Value: 350 ms guaranteed reset hold prevents erratic firmware execution caused by marginal VCC during cold cranking or load dump recovery. | Use Scenario: Reset management in pre-OBD-II engine control units using Motorola 68HC11 microcontrollers powered from vehicle battery via linear regulator. IC Role / Device Role / Timing Role: Voltage supervisor detecting 5 V rail collapse below 4.25 V and holding reset for ≥250 ms post-recovery. Use Value: Eliminates need for external RC network and comparator, reducing BOM cost and improving long-term drift stability vs. discrete solutions. |
| Medical Infusion Pump | Point-of-Sale Terminal |
Use Scenario: Safety-critical reset assurance in battery-operated infusion pumps where unexpected MCU reset could compromise dose delivery. IC Role / Device Role / Timing Role: Fault-tolerant power monitor triggering controlled restart when main 5 V supply drops due to battery depletion or connector disconnection. Use Value: Internal 5 kΩ pull-up and ±10% trip accuracy ensure deterministic reset behavior across battery discharge curve without calibration. | Use Scenario: Reliable boot sequencing in retail terminals using HC16-based controllers subjected to frequent AC power cycling and USB peripheral hot-plug events. IC Role / Device Role / Timing Role: Supervisor providing clean, glitch-free reset signal synchronized to 5 V rail stabilization after power-on or wake-from-sleep. Use Value: 350 ms typ. timeout accommodates slow-rising switching regulators and eliminates need for manual reset button or external timing capacitor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX691ACSA+ | Higher integration: includes watchdog timer, manual reset input, and 1.25 V reference; 200 ms min reset timeout; SO-8 package | Required where system-level fault recovery (e.g., stuck software) must be handled alongside power monitoring | Select MAX691ACSA+ when watchdog functionality and manual reset are needed; DS1233DZ-10/T&R is optimal for cost-sensitive, single-function reset-only designs |
| TPS3808G12DBVR | Dual threshold: 1.2 V and 5 V monitoring; adjustable reset delay up to 200 s; 6-pin SOT-23; higher quiescent current (12 µA vs. 50 µA) | Suitable for multi-rail systems requiring independent monitoring of core and I/O supplies | Choose TPS3808G12DBVR for flexible dual-supply supervision; DS1233DZ-10/T&R delivers fixed 5 V ±10% detection with minimal footprint and lowest BOM count |
Compared with MAX691ACSA+ and TPS3808G12DBVR, DS1233DZ-10/T&R provides the simplest, lowest-cost solution for dedicated 5 V microprocessor reset with guaranteed 350 ms pulse width and no external components required-ideal for legacy 68XXX/HC16 platforms where feature expansion is unnecessary.
Availability
DS1233DZ-10/T&R is available at Aetrix Electronics and suitable for industrial PLC controllers, legacy automotive ECUs, medical infusion pumps, and point-of-sale terminals requiring stable component supply and long-term lifecycle support.
Supply support for DS1233DZ-10/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
Maxim Integrated, now part of Analog Devices, designs precision analog, mixed-signal, and power management ICs for industrial, automotive, and computing applications.
The DS1233DZ-10/T&R belongs to the EconoReset™ family of supervisory circuits engineered specifically for cost-effective, single-function power monitoring in 5 V microprocessor systems with strict timing and accuracy requirements.
FAQ
What is the exact VCC trip point range for DS1233DZ-10/T&R?
The DS1233DZ-10/T&R has a guaranteed VCC trip point range of 4.25 V to 4.49 V, corresponding to ±10% of nominal 5 V. This specification is tested and characterized across the full -40°C to +85°C operating temperature range per the official DS1233D datasheet revision.
Does DS1233DZ-10/T&R require an external pull-up resistor on the RST pin?
No, DS1233DZ-10/T&R includes an internal pull-up resistor of 3.75–6.25 kΩ on the RST pin, eliminating the need for an external component. This feature is confirmed in the DC Electrical Characteristics table and simplifies design for direct interface with Motorola 68XXX and HC16 microprocessors.
What is the minimum reset pulse width guaranteed by DS1233DZ-10/T&R?
DS1233DZ-10/T&R guarantees a minimum reset pulse width of 250 ms after VCC returns to tolerance, with typical duration of 350 ms and maximum of 450 ms. This timing ensures robust microprocessor initialization across varying power supply slew rates and temperature conditions.
Which microprocessor families is DS1233DZ-10/T&R explicitly compatible with?
DS1233DZ-10/T&R is explicitly stated in its datasheet to be compatible with Motorola 68XXX series and HC16 microprocessors. This compatibility is based on matching electrical thresholds, timing profiles, and reset polarity requirements-verified through application examples and functional testing in the original Maxim documentation.
What package type is used for DS1233DZ-10/T&R, and how many pins does it have?
DS1233DZ-10/T&R is packaged in SOT-223 format with four pins: Pin 1 (GND), Pin 2 (RST), Pin 3 (VCC), and Pin 4 (GND). The dual-ground configuration enhances thermal performance and noise immunity in compact industrial PCB layouts.
DS1233DZ-10/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:
- 4.375V
- 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
DS1233DZ-10/T&R FAQ
1.How can I place an order for DS1233DZ-10/T&R through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1233DZ-10/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 DS1233DZ-10/T&R reliable?
The price and inventory of DS1233DZ-10/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 DS1233DZ-10/T&R is usually 5 days.
3.What payment methods are accepted for DS1233DZ-10/T&R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1233DZ-10/T&R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1233DZ-10/T&R?
DS1233DZ-10/T&R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1233DZ-10/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 DS1233DZ-10/T&R?
For technical support, including DS1233DZ-10/T&R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1233DZ-10/T&R requirements.
6.How does Aetrix verify that DS1233DZ-10/T&R is sourced from the original manufacturer or authorized distributors?
All DS1233DZ-10/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 DS1233DZ-10/T&R meets industry standards.
7.What is the process for return or replacement of DS1233DZ-10/T&R?
All DS1233DZ-10/T&R units undergo pre-shipment inspection (PSI). If there is an issue with DS1233DZ-10/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 DS1233DZ-10/T&R part is unused and in its original packaging.
Return procedure for DS1233DZ-10/T&R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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