My Inquiry
My Account
Analog Devices Inc./Maxim Integrated DS1233AZ-10/T&R
- Part No.:
- DS1233AZ-10/T&R
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
DS1233AZ-10/T&R.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT223-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,582
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
DS1233AZ-10/T&R from Maxim Integrated is a 3.3V precision voltage-monitoring microprocessor reset supervisor IC with pushbutton debounce, 2.80–2.97V VCC trip point (10% tolerance), 350ms reset timeout, and internal 5kΩ pull-up resistor. It ensures reliable power-on reset and manual reset in embedded microcontroller systems.
For engineers reviewing the DS1233AZ-10/T&R datasheet, DS1233AZ-10/T&R pinout, DS1233AZ-10/T&R application, or DS1233AZ-10/T&R equivalent, key selection factors include VCC trip accuracy, reset pulse duration, pushbutton interface behavior, operating temperature range, and TO-92/SOT-223 package compatibility.
Technical Context
The DS1233AZ-10/T&R integrates a precision temperature-compensated voltage reference and comparator to monitor 3.3V supply rails, asserting RESET when VCC falls below 2.80V and holding it active for 350ms after recovery. Its internal debouncing logic detects pushbutton release-not press-and generates a clean 350ms reset pulse.
It operates across -40°C to +85°C, draws only 50μA quiescent current, and features a 100pF–0.01μF external capacitor requirement on the RST pin for proper pushbutton operation. The device uses a single-supply architecture with no external bias components needed.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Trip Point | 2.80–2.97V (10% tolerance at 3.3V); ensures reset activation before microprocessor brownout |
| Reset Timeout | 250–450ms (typ. 350ms); guarantees stable power and processor initialization before release |
| Supply Current | 50μA max; enables low-power always-on monitoring in battery-backed systems |
| Operating Temp | -40°C to +85°C; supports industrial-grade embedded deployment without derating |
| Output Drive | 8mA sink at 0.4V; directly drives standard CMOS/TTL reset inputs without buffer |
| Internal Pull-Up | 3.75–6.25kΩ; eliminates external resistor for basic pushbutton interface |
| Pushbutton Detect | 0.8–2.0V threshold; rejects noise while reliably detecting switch closure |
Pinout & Package
DS1233AZ-10/T&R is supplied in TO-92 package (3-pin, through-hole) per package code Q3+1 (Maxim document 21-0248). Pin 1 = GROUND, Pin 2 = RESET (open-drain output), Pin 3 = VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | GROUND | Reference node for voltage sensing and output stage; must be low-impedance connection to system ground plane |
| Pin 2 | RESET | Open-drain active-low reset output; requires external pull-up for high state; also serves as pushbutton sense input |
| Pin 3 | VCC | Power supply input (1.2–5.5V); powers internal reference, comparator, and timer circuits |
Key Features
| Feature | Design Value |
|---|---|
| Automatic Power-Fail Reset | Detects VCC drop below 2.80V and asserts RESET within 100ns-prevents erratic MCU execution during brownout |
| Pushbutton Debounce Logic | Internally filters mechanical switch bounce and generates precise 350ms reset pulse on button release-not press |
| Temperature-Compensated Reference | Ensures ±1% trip point stability over -40°C to +85°C-no calibration required across operating range |
| No External Components Required | Integrates reference, comparator, timer, and 5kΩ pull-up-replaces 5+ discrete parts in basic reset circuits |
| Low Quiescent Current | 50μA typical draw enables use in always-on supervisory roles without impacting system power budget |
Applications
| Industrial PLC Controller | Medical Diagnostic Handheld |
|---|---|
Use Scenario: Microcontroller-based PLC I/O module subjected to intermittent 24V AC/DC converter ripple and field wiring transients. IC Role / Device Role / Timing Role: Primary power-on and brownout reset supervisor; provides 350ms guaranteed hold time after VCC recovery to prevent firmware lockup. Use Value: Eliminates need for RC-based reset circuits prone to temperature drift and component aging-ensures deterministic startup across 10-year product lifecycle. | Use Scenario: Portable ultrasound probe with battery-backed MCU requiring reliable wake-from-sleep and emergency manual reset. IC Role / Device Role / Timing Role: Dual-function supervisor: monitors 3.3V LDO output and accepts tactile button press for user-initiated safe reboot. Use Value: Internal debounce removes need for firmware polling or external Schmitt trigger-reduces BOM count and improves UI responsiveness. |
| Smart Energy Meter | Automotive Body Control Module |
Use Scenario: ANSI C12.20-compliant meter exposed to wide ambient temperature swings and utility grid sags. IC Role / Device Role / Timing Role: Precision 3.3V supply monitor with ±1% trip stability over temperature; holds RESET until power stabilizes post-sag. Use Value: Meets IEC 62053-21 reset timing requirements without external trimming-reduces test calibration steps in production. | Use Scenario: BCM controlling door locks, lighting, and window motors powered by vehicle battery with load-dump transients. IC Role / Device Role / Timing Role: Resets microcontroller during battery undervoltage events (e.g., cold-cranking) and supports service technician reset via dashboard button. Use Value: Single-device solution replaces discrete reset IC + debounce RC network-saves PCB area in space-constrained automotive modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326–33D2T | Fixed 3.08V trip point; 200ms reset timeout; no pushbutton interface; SOT-23-3 package | Designed for simpler power-only monitoring where manual reset is handled separately | Select when pushbutton debounce is unnecessary and tighter trip accuracy (±1.5%) is required |
| TPS3808G12DBVR | Adjustable trip via external resistor divider; 200ms–10s timeout; higher ICC (12μA typ); SOT-23-6 package | Supports custom VCC thresholds and longer reset durations but requires two external resistors | Select when system requires non-standard trip voltage or programmable reset timing beyond 350ms |
Compared with MAX6326–33D2T and TPS3808G12DBVR, DS1233AZ-10/T&R uniquely combines fixed 3.3V 10%-tolerance monitoring, integrated pushbutton debounce, and TO-92 compatibility-making it optimal for cost-sensitive, space-constrained designs needing both power and manual reset in one chip.
Availability
DS1233AZ-10/T&R is available at Aetrix Electronics and suitable for industrial control systems, portable medical devices, smart energy meters, and automotive body electronics requiring stable component supply and long-term manufacturability.
Supply support for DS1233AZ-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) is a semiconductor company specializing in analog, mixed-signal, and power management ICs for industrial, communications, and computing applications.
The DS1233A family was designed specifically for cost-effective, high-reliability microprocessor reset supervision in resource-constrained embedded systems-emphasizing integration, temperature stability, and ease of use.
FAQ
What is the exact VCC trip voltage range for DS1233AZ-10/T&R?
The DS1233AZ-10/T&R has a guaranteed VCC trip point of 2.80V to 2.97V at 25°C, corresponding to 10% tolerance around a nominal 3.3V supply. This range is maintained across the full -40°C to +85°C operating temperature range due to its internal temperature-compensated voltage reference, ensuring consistent brownout detection without external calibration.
Does DS1233AZ-10/T&R require an external capacitor on the RESET pin?
Yes, DS1233AZ-10/T&R requires a capacitor between 100pF and 0.01μF connected from the RESET pin to ground for proper pushbutton debounce operation. This capacitor filters switch bounce and enables the internal timer to generate a clean 350ms reset pulse upon button release. Without it, the device may produce multiple or unstable reset pulses.
Can DS1233AZ-10/T&R be used with a 5V supply?
No, DS1233AZ-10/T&R is specified for 3.3V systems only. Its VCC trip point is fixed at 2.80–2.97V, optimized for 3.3V rails. For 5V applications, use DS1233-10 (trip ~4.25–4.49V) or DS1233D-10. Applying 5V to DS1233AZ-10/T&R exceeds its absolute maximum VCC rating of 5.5V but risks incorrect trip behavior and violates its 10% tolerance specification at 3.3V.
What is the function of Pin 2 (RESET) on DS1233AZ-10/T&R?
Pin 2 on DS1233AZ-10/T&R is an open-drain active-low RESET output that serves dual functions: (1) it asserts a low signal during power failure or reset initiation, and (2) it acts as the input node for external pushbutton detection. When used with a pushbutton, the same pin senses switch closure and releases-triggering internal debounce and generating a precise 350ms reset pulse upon release.
Is DS1233AZ-10/T&R pin-compatible with other DS1233A variants?
Yes, all DS1233A variants-including DS1233AZ-10/T&R, DS1233A-15, and DS1233A-5-share identical TO-92 pinout (Pin 1 = GND, Pin 2 = RST, Pin 3 = VCC) and SOT-223 pinout (Pin 1 = GND, Pin 2 = RST, Pin 3 = VCC, Pin 4 = GND). The only differences are VCC trip point and pushbutton detect thresholds-enabling direct substitution when trip voltage matches system requirements.
DS1233AZ-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:
- 2.88V
- 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
DS1233AZ-10/T&R FAQ
1.How can I place an order for DS1233AZ-10/T&R through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1233AZ-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 DS1233AZ-10/T&R reliable?
The price and inventory of DS1233AZ-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 DS1233AZ-10/T&R is usually 5 days.
3.What payment methods are accepted for DS1233AZ-10/T&R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1233AZ-10/T&R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1233AZ-10/T&R?
DS1233AZ-10/T&R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1233AZ-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 DS1233AZ-10/T&R?
For technical support, including DS1233AZ-10/T&R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1233AZ-10/T&R requirements.
6.How does Aetrix verify that DS1233AZ-10/T&R is sourced from the original manufacturer or authorized distributors?
All DS1233AZ-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 DS1233AZ-10/T&R meets industry standards.
7.What is the process for return or replacement of DS1233AZ-10/T&R?
All DS1233AZ-10/T&R units undergo pre-shipment inspection (PSI). If there is an issue with DS1233AZ-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 DS1233AZ-10/T&R part is unused and in its original packaging.
Return procedure for DS1233AZ-10/T&R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DS1233AZ-10/T&R Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
