My Inquiry
My Account
Analog Devices Inc./Maxim Integrated DS1832U
- Part No.:
- DS1832U
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
DS1832U.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:1,244
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
DS1832U from Maxim Integrated is a programmable digital thermostat and thermometer IC with 1-Wire® interface, operating across –55°C to +125°C, delivering ±1°C accuracy from 0°C to +85°C, 8-bit (1°C resolution) temperature readings, and standalone thermostat functionality using user-defined TH/TL trip-points. It serves as a system-level thermal monitor in embedded control loops.
For engineers reviewing the DS1832U datasheet, DS1832U pinout, DS1832U application, or DS1832U equivalent, key selection considerations include its single-pin 1-Wire communication, nonvolatile trip-point storage, open-drain DQ output polarity control, continuous or one-shot conversion modes, and dual-mode operation (thermostat vs. sensor).
Technical Context
The DS1832U implements a proprietary direct-to-digital temperature sensor using dual-oscillator architecture: a low-temp-co oscillator drives a preset counter while a high-temp-co oscillator defines the gate period. Temperature is derived iteratively by incrementing an 8-bit register until the counter's zero-crossing time falls below the gate duration.
It supports two mutually exclusive operating modes controlled by the nonvolatile T/R̄ bit: 1-Wire mode enables bidirectional register access (TH/TL, status, temperature) via DQ; thermostat mode enables autonomous DQ output activation based on preprogrammed TH/TL thresholds, with polarity selectable via the POL bit.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Temperature Range | –55°C to +125°C - fully specified operational range for industrial and automotive thermal monitoring |
| Accuracy | ±1°C from 0°C to +85°C - enables reliable setpoint control without external calibration |
| Resolution | 8-bit (1°C) - provides integer-degree centigrade output directly usable in microcontroller logic |
| Conversion Time | ≤1 second max - deterministic timing for thermal response in closed-loop systems |
| Interface | 1-Wire® (open-drain DQ) - reduces PCB routing to one signal line plus ground, no external components required |
| Power Supply | 2.7V to 5.5V - compatible with 3.3V and 5V logic domains without level-shifting |
| Nonvolatile Memory | EEPROM stores TH, TL, T/R̄, POL, 1SHOT - allows factory programming for drop-in thermostat deployment |
Pinout & Package
DS1832U is available in 3-pin TO92 and 8-pin SO (208-mil) packages. Pin functions are identical across both variants: GND (ground reference), DQ (bidirectional 1-Wire data I/O and open-drain thermostat output), VDD (power supply input). All unlisted pins in the SO package are NC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND | Ground reference | Provides return path for DQ pull-up current and internal bias networks; must be low-impedance connection |
| DQ | 1-Wire data I/O / Thermostat output | Open-drain node requiring external ~4.7kΩ pull-up; serves as both digital interface port and active-high/low thermal alarm signal |
| VDD | Power supply input | Accepts 2.7V–5.5V; powers internal oscillator, EEPROM, and comparator logic; no bypass capacitor required per datasheet |
Key Features
| Feature | Design Value |
|---|---|
| Standalone thermostat operation | Autonomous DQ output activation based on preprogrammed TH/TL thresholds-no host MCU needed after configuration |
| User-programmable trip points | TH and TL registers stored in EEPROM-retain settings across power cycles and enable field reconfiguration |
| Selectable DQ polarity | POL bit configures active-high or active-low thermostat output-matches existing control logic without external inverters |
| Two conversion modes | 1SHOT bit selects continuous or one-shot measurement-optimizes power vs. responsiveness for battery or mains-powered systems |
| Thermal event flags | THF and TLF bits record historical over/under-temperature events-enables post-failure diagnostics without continuous polling |
Applications
| Industrial Temperature Monitoring | Consumer Appliance Control |
|---|---|
Use Scenario: Real-time thermal supervision of motor windings, power converters, or enclosure ambient in factory automation PLCs. IC Role / Device Role / Timing Role: Standalone thermostat triggering fan activation or shutdown when temperature exceeds TH threshold; DQ output directly drives optocoupler or GPIO interrupt. Use Value: Eliminates need for ADC, software polling, and thermal algorithm implementation-reduces BOM count and firmware complexity. | Use Scenario: Overheat protection in coffee makers, rice cookers, or air fryers where precise thermal cutoff prevents damage or fire hazard. IC Role / Device Role / Timing Role: Preprogrammed DS1832U powers up in thermostat mode; DQ asserts at +110°C (TH) and deasserts at +95°C (TL) to cut heater power via triac driver. Use Value: Hysteresis (15°C) prevents chatter; EEPROM retention ensures safety-critical trip points survive product lifetime without drift or recalibration. |
| Medical Device Thermal Safety | Automotive Cabin Climate Sensing |
Use Scenario: Patient-contact surface temperature limit enforcement in infusion pumps or diagnostic equipment. IC Role / Device Role / Timing Role: DS1832U mounted on thermistor trace; configured for 1-Wire mode to log temperature history and trigger audible alarm if >41°C sustained for 30s. Use Value: Two's complement output simplifies signed arithmetic in host MCU; ±1°C accuracy meets IEC 60601-1 thermal safety tolerances. | Use Scenario: Ambient cabin temperature feedback for HVAC controller in passenger vehicles. IC Role / Device Role / Timing Role: DS1832U in TO92 package mounted near dashboard vent; operates in 1-Wire mode with periodic reads (every 2s) to update PID loop setpoint. Use Value: Wide –55°C to +125°C range covers cold-soak and under-hood thermal extremes; 1-Wire minimizes wiring harness weight and connector count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable digital thermostat applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DS18B20+ | 12-bit resolution (0.0625°C), parasite-power capable, supports multi-drop 1-Wire bus | Requires host MCU for all operations; no standalone thermostat mode or nonvolatile TH/TL registers | Choose DS18B20+ only when higher resolution and multi-sensor bus sharing are required-and thermostat autonomy is not needed. |
| LMT70AYPWR | Analog output (ratiometric voltage), 0.1°C typical accuracy, requires external ADC and microcontroller | No built-in logic or memory; cannot function as standalone thermostat or store trip points | Choose LMT70AYPWR only when analog interface is mandated and full thermal control logic resides in host system. |
Compared with DS18B20+ and LMT70AYPWR, the DS1832U uniquely combines autonomous thermostat operation, EEPROM-stored trip points, and 1-Wire simplicity-making it the only option that eliminates host intervention for basic thermal cutoff functions.
Availability
DS1832U is available at Aetrix Electronics and suitable for industrial temperature monitoring, consumer appliance safety, medical device thermal limits, and automotive cabin sensing requiring stable component supply across extended lifecycle programs.
Supply support for DS1832U 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 and mixed-signal ICs for industrial, automotive, and communications applications, emphasizing reliability, integration, and low-power operation.
The DS1832U belongs to Maxim's 1-Wire temperature sensor family, engineered specifically for applications demanding autonomous thermal decision-making with minimal external components and guaranteed long-term trip-point stability.
FAQ
What is the operating temperature range of the DS1832U?
The DS1832U operates across –55°C to +125°C, fully characterized over this range. Its ±1°C accuracy specification applies from 0°C to +85°C, making it suitable for harsh environments including industrial enclosures, automotive under-hood locations, and outdoor equipment. The device maintains functional integrity at extremes, with no derating required within datasheet limits.
How does the DS1832U differ from the DS18B20+?
The DS1832U differs from the DS18B20+ in three key ways: it supports standalone thermostat mode (with nonvolatile TH/TL storage), offers fixed 8-bit resolution (vs. 12-bit in DS18B20+), and lacks multi-drop 1-Wire capability. Unlike DS18B20+, the DS1832U can operate autonomously without a host MCU once programmed-making DS1832U ideal for simple thermal cutoff, while DS18B20+ suits high-resolution, multi-sensor systems.
Can the DS1832U be used without a microcontroller?
Yes-the DS1832U can operate without a microcontroller when configured in thermostat mode (T/R̄ = 1). In this mode, it performs continuous temperature conversions and drives the DQ pin high or low (polarity configurable via POL bit) based on TH/TL thresholds. This enables direct interfacing with relays, optocouplers, or logic gates for hardware-only thermal protection circuits.
What package options are available for the DS1832U?
The DS1832U is offered in two RoHS-compliant packages: 3-pin TO92 (DS1832UC+) and 8-pin SO (208-mil, DS1832US+). Both share identical pinout (GND, DQ, VDD) and electrical specifications. The TO92 variant is optimized for through-hole prototyping and cost-sensitive consumer applications; the SO package supports automated SMT assembly and higher-density layouts.
Does the DS1832U require external components for basic operation?
No-the DS1832U requires no external components for core functionality. A single 4.7kΩ pull-up resistor on the DQ line is sufficient for 1-Wire communication or thermostat output. No bypass capacitors, crystal oscillators, or level shifters are needed. This minimalist BOM reduces design risk, board space, and qualification effort-especially critical in safety-critical thermal systems.
DS1832U Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- MicroMonitor™
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.55V, 2.88V
- Output:
- Push-Pull, Push-Pull
- Reset:
- Active High/Active Low
- Reset Timeout:
- 250ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-uMAX/uSOP
DS1832U FAQ
1.How can I place an order for DS1832U through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1832U 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 DS1832U reliable?
The price and inventory of DS1832U are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS1832U is usually 5 days.
3.What payment methods are accepted for DS1832U?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1832U transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1832U?
DS1832U orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1832U 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 DS1832U?
For technical support, including DS1832U datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1832U requirements.
6.How does Aetrix verify that DS1832U is sourced from the original manufacturer or authorized distributors?
All DS1832U 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 DS1832U meets industry standards.
7.What is the process for return or replacement of DS1832U?
All DS1832U units undergo pre-shipment inspection (PSI). If there is an issue with DS1832U, 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 DS1832U part is unused and in its original packaging.
Return procedure for DS1832U:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DS1832U 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…
