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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Supervisors

STMicroelectronics TS831-5ID

Name: TS831-5ID
Brand: STMicroelectronics
SKU: TS831-5ID
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TS831-5ID

Manufacturer:: STMicroelectronics

Category:: Supervisors

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: TS831-5ID.pdf

Description:: IC SUPERVISOR 1 CHANNEL 8SO

Quantity:: RFQ Add To RFQ list

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Inventory:1,595

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Product details

Overview

TS831-5ID from STMicroelectronics is an ultra-low-power voltage supervisor IC with active-low open-drain reset output, precision 4.33V threshold (typ.), 12µA supply current at 5V, guaranteed operation down to 1V V_CC, and 20µs response time under 10mV overdrive. It serves as a power-on reset generator for microcontrollers in battery-powered industrial sensors.

For engineers reviewing the TS831-5ID datasheet, TS831-5ID pinout, TS831-5ID application, or TS831-5ID equivalent, key selection criteria include reset threshold accuracy across temperature, ultra-low ICC stability at low V_CC, open-drain drive capability into external pull-up networks, and hysteresis margin against supply noise.

Technical Context

The TS831-5ID integrates a thermally matched band-gap reference and comparator with internal hysteresis (100mV typ.) to prevent false resets during noisy V_CC transitions. Its open-drain output sinks up to 20mA and requires an external pull-up resistor to define logic-high level.

It operates across -40°C to +125°C with V_CC from 1V to 5.5V, delivering stable reset assertion when V_CC falls below 4.33V (rising edge) and release when V_CC rises above 4.46V (falling edge), ensuring monotonic reset behavior in brown-out recovery.

Key Specifications

Parameter	Value and Actual Design Meaning
Reset Threshold	4.33V typical; ensures reliable microcontroller reset initiation at nominal 5V rail
Supply Current	12µA max at 5V; enables >10-year battery life in coin-cell–powered IoT nodes
Response Time	20µs with 10mV overdrive; detects fast supply dips before system lockup
Hysteresis	100mV typical; provides noise immunity against 50mVpp ripple on V_CC
Operating Voltage	1V to 5.5V; supports reset generation even during deep brown-out conditions
Output Type	Open-drain; allows wired-OR reset bus configuration with multiple supervisors

Pinout & Package

TS831-5ID is supplied in an 8-pin SO (Small Outline) plastic micropackage (SO8), compliant with JEDEC MS-012, with 1.27mm pitch and gull-wing leads.

Pin/Terminal	Circuit Role	Design Meaning
1	V_CC	Positive supply input; must be decoupled locally to suppress transients
2	GND	Ground reference for internal reference and comparator
3	RESET (open drain)	Active-low reset output; requires external pull-up to host V_CC or higher rail
4–8	No Connect	Internally unused; left unconnected per design-no tie required

Key Features

Feature	Design Value
Ultra-low ICC	12µA max at 5V enables energy harvesting and long-life battery systems
Precision threshold	±2.5% tolerance over -40°C to +125°C ensures consistent reset point across environments
Guaranteed 1V operation	Validates reset assertion during deep undervoltage events where other supervisors fail
Internal hysteresis	100mV prevents chatter on noisy rails without requiring external RC network

Applications

Industrial Sensor Node

Portable Medical Monitor

Use Scenario: Battery-powered temperature/humidity sensor operating on CR2032 cell with intermittent BLE transmission.

IC Role / Device Role / Timing Role: Power-on reset generator and brown-out detector for ARM Cortex-M0+ MCU.

Use Value: 12µA ICC extends shelf life beyond 5 years; 1V minimum V_CC support ensures reset remains valid until battery depletion.

Use Scenario: Wearable ECG patch with low-voltage LDO and flash memory retention circuit.

IC Role / Device Role / Timing Role: Supervisor for safe power-down sequencing and flash write protection.

Use Value: 20µs response prevents data corruption during rapid voltage collapse; open-drain output interfaces directly with flash /RESET pin.

Automotive Body Control Module

Smart Meter Power Supply

Use Scenario: LIN-based door module exposed to load-dump and cold-crank transients.

IC Role / Device Role / Timing Role: Reset source for 32-bit microcontroller during battery voltage sag.

Use Value: 100mV hysteresis rejects alternator ripple; -40°C to +125°C rating meets AEC-Q100 Grade 2 requirements.

Use Scenario: Dual-supply smart meter with mains and backup supercapacitor.

IC Role / Device Role / Timing Role: Supervises both supplies and asserts unified reset signal to SoC.

Use Value: Pin-compatible replacement for MC33064 simplifies legacy redesign; SO8 package supports automated assembly.

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage supervisor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MC33064DR2G	Higher ICC (25µA), no guaranteed 1V operation, 4.5V threshold (±2.5%)	Lacks deep brown-out detection; unsuitable for sub-2V battery cutoff	Select when legacy compatibility outweighs ultra-low-power requirement
TPS3808G33DBVR	Lower ICC (1.8µA), fixed 3.3V threshold, push-pull output, tighter temp drift (±0.5%)	Requires redesign of reset net due to push-pull vs open-drain topology	Select for new designs needing lowest ICC and tighter threshold stability

Compared with MC33064DR2G and TPS3808G33DBVR, TS831-5ID uniquely balances ultra-low ICC, 1V operational floor, and open-drain flexibility-making it optimal for cost-sensitive, battery-constrained embedded systems requiring robust brown-out immunity without topology change.

Availability

TS831-5ID is available at Aetrix Electronics and suitable for industrial sensor nodes, portable medical monitors, automotive body control modules, and smart meter power supplies requiring stable component supply across extended temperature ranges.

Supply support for TS831-5ID 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing analog, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.

The TS831 series belongs to ST's precision voltage supervisor product line, engineered specifically for ultra-low-power reset generation in space- and energy-constrained embedded systems where reliability across wide temperature and supply ranges is critical.

FAQ

What is the minimum V_CC required for TS831-5ID to assert RESET?

The TS831-5ID guarantees functional reset assertion down to 1V V_CC, verified across -40°C to +125°C. At 1V, the internal band-gap reference remains stable enough to compare against the 4.33V threshold via scaled internal resistors, enabling early fault detection before system collapse.

Can TS831-5ID drive a 10kΩ pull-up resistor to 5V?

Yes. With VOL ≤ 800mV at I_OL = 8mA and -40°C ≤ T_amb ≤ +85°C, TS831-5ID can sink ≥8mA while maintaining logic-low state. A 10kΩ pull-up to 5V draws only 0.5mA, well within its 20mA absolute maximum sink rating.

Is external hysteresis required?

No. The TS831-5ID integrates 100mV typical hysteresis between V_THI (4.33V) and V_THD (4.46V), eliminating need for external feedback components. This hysteresis is factory-trimmed and stable over temperature, reducing BOM count and layout area.

How does TS831-5ID differ from TS831-4I and TS831-3I?

TS831-5ID has 4.33V threshold and 100mV hysteresis; TS831-4I uses 4.50V/100mV; TS831-3I uses 2.71V/60mV. All share identical ICC (12µA), response time (20µs), package options, and operating range (-40°C to +125°C), differing only in threshold voltage and hysteresis magnitude.

TS831-5ID Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Tube

Product Status:: Obsolete

Programmable:: Not Verified

Type:: Simple Reset/Power-On Reset

Number of Voltages Monitored:: 1

Voltage - Threshold:: 4.33V

Output:: Open Drain or Open Collector

Reset:: Active Low

Reset Timeout:: 20µs Typical Response Time

Operating Temperature:: -40°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

TS831-5ID FAQ

1.How can I place an order for TS831-5ID through Aetrix?

Please submit a Request for Quotation (RFQ) for TS831-5ID 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 TS831-5ID reliable?

The price and inventory of TS831-5ID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS831-5ID is usually 5 days.

3.What payment methods are accepted for TS831-5ID?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS831-5ID transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TS831-5ID?

TS831-5ID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TS831-5ID 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 TS831-5ID?

For technical support, including TS831-5ID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS831-5ID requirements.

6.How does Aetrix verify that TS831-5ID is sourced from the original manufacturer or authorized distributors?

All TS831-5ID 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 TS831-5ID meets industry standards.

7.What is the process for return or replacement of TS831-5ID?

All TS831-5ID units undergo pre-shipment inspection (PSI). If there is an issue with TS831-5ID, 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 TS831-5ID part is unused and in its original packaging.

Return procedure for TS831-5ID:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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