Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

STMicroelectronics TS834-5ID

Name: TS834-5ID
Brand: STMicroelectronics
SKU: TS834-5ID
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: TS834-5ID

Manufacturer:: STMicroelectronics

Category:: Supervisors

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

Datasheet:: TS834-5ID.pdf

Description:: IC SUPERVISOR 1 CHANNEL 8SO

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:1,518

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

TS834-5ID from STMicroelectronics is a micropower voltage supervisor IC providing dual active-high and active-low reset outputs, integrated reset timer with disable function, 4.33V precision threshold (±130mV over −40°C to +85°C), guaranteed operation down to 1.5V supply, and 12µA max quiescent current at 5V - used in microcontroller power monitoring and brown-out detection circuits.

For engineers reviewing the TS834-5ID datasheet, TS834-5ID pinout, TS834-5ID application, or TS834-5ID equivalent, key selection considerations include reset threshold accuracy, dual-output polarity support, timer enable/disable control via Timer Control pin, open-drain output drive capability (450mV typ. @ 8mA), and SO8 package compatibility with industrial-grade temperature range.

Technical Context

The TS834-5ID integrates a thermally matched resistor network for stable 4.33V threshold reference, a high-gain comparator with 100mV internal hysteresis, and independent output stages: one open-drain active-low RESET and one push-pull active-high RESET. The Timer Control pin selects between fixed 125–500ms reset pulse width (enabled) or immediate reset assertion (disabled).

It operates across 1.5V–5.5V supply range with guaranteed functionality at VCC = 1.5V, achieves 20µs response time under 10mV overdrive, and maintains <12µA ICC across −40°C to +85°C - enabling use in battery-backed and ultra-low-power embedded systems where supply rail integrity must be continuously verified.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	1.5V to 5.5V - supports direct interface with 3.3V and 5V logic rails and brown-out detection below 2V.
Reset Threshold (V_THI)	4.33V typ., 4.10–4.46V min/max - precision bandgap-referenced trip point with guaranteed spec over full temperature range.
Hysteresis	100mV typ. - prevents chatter during slow-rising/falling VCC transitions near threshold.
Quiescent Current	12µA max @ VCC = 5V - enables multi-year operation in coin-cell-powered supervisory applications.
Response Time	20µs @ 10mV overdrive - ensures rapid fault capture before system state corruption occurs.
Output Type	Active-low open-drain + active-high push-pull - allows flexible pull-up configuration and direct MCU reset pin connection.
Reset Pulse Width	125–500ms (timer enabled), immediate (timer disabled) - configurable timing for reliable processor initialization sequencing.

Pinout & Package

TS834-5ID is supplied in an 8-pin Small Outline (SO8) plastic micropackage per JEDEC MS-012, with 1.27mm lead pitch, body size 4.9 × 6.0 mm, and thermal resistance R_thJA = 175°C/W.

Pin/Terminal	Circuit Role	Design Meaning
1	RESET (active-low)	Open-drain output asserted low when VCC falls below threshold; requires external pull-up.
2	VCC	Main power supply input (1.5–5.5V); powers internal reference, comparator, and outputs.
3	NC	No internal connection; must remain unconnected per datasheet.
4	GND	Ground reference for all internal circuitry and output return path.
5	RESET (active-high)	Push-pull output asserted high when VCC falls below threshold; no external pull-up needed.
6	NC	No internal connection; must remain unconnected.
7	NC	No internal connection; must remain unconnected.
8	Timer Control	Logic-level input: tie to VCC to enable 125–500ms reset pulse; tie to GND to disable timer (instant reset).

Key Features

Feature	Design Value
Dual-polarity reset outputs	Simultaneous active-low open-drain and active-high push-pull outputs eliminate need for external level-shifting or inversion logic.
Configurable reset timing	Timer enable/disable via single pin allows either fixed-duration reset pulse (for safe processor boot) or immediate assertion (for fast fault response).
Ultra-low supply current	12µA max ICC enables integration into always-on subsystems without compromising battery life.
Guaranteed operation at 1.5V	Valid reset behavior down to 1.5V supply ensures reliable detection of deep brown-out conditions before MCU lockup.
Thermally matched threshold	4.33V threshold set by on-chip laser-trimmed resistors ensures ±130mV tolerance over −40°C to +85°C without external calibration.

Applications

Industrial PLC Controllers

Medical Diagnostic Handhelds

Use Scenario: Power rail monitoring during cold start and mains interruption in programmable logic controllers with isolated I/O modules.

IC Role / Device Role / Timing Role: Voltage supervisor asserting both active-low and active-high reset signals to ARM Cortex-M7 MCU and FPGA configuration logic upon 5V rail dip below 4.33V.

Use Value: Dual outputs synchronize reset across heterogeneous logic domains; 125–500ms timer ensures FPGA config memory is fully initialized before release.

Use Scenario: Battery-backed real-time clock and sensor interface supervision in portable ultrasound devices operating from Li-ion cells.

IC Role / Device Role / Timing Role: Monitors 3.3V system rail; asserts active-low reset to microcontroller and active-high signal to analog front-end ASIC when voltage drops below 4.33V during discharge.

Use Value: 12µA quiescent current extends standby time; 1.5V minimum operation guarantees reset before brown-out-induced ADC corruption.

Automotive Body Control Modules

Smart Energy Meters

Use Scenario: Monitoring 5V supply derived from vehicle battery in BCMs exposed to load-dump and cold-crank transients.

IC Role / Device Role / Timing Role: Provides robust reset signaling to 8-bit automotive MCU using 100mV hysteresis to reject noise from alternator ripple and ignition spikes.

Use Value: 20µs response captures fast dips; SO8 package meets AEC-Q200 stress test requirements for vibration and thermal cycling.

Use Scenario: Supervising 3.3V rail in DIN-rail mounted electricity meters with backup supercapacitor hold-up.

IC Role / Device Role / Timing Role: Generates timed reset pulse (via Timer Control = VCC) to ensure secure bootloader execution after capacitor-based power recovery.

Use Value: Configurable timer eliminates need for external RC timing network; 4.33V threshold aligns with EN 50470-3 undervoltage trip requirements.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MAX809SEUR+T	Single active-low output only; 2.93V fixed threshold; no timer; 1.2µA ICC.	Lacks dual-output polarity and reset timing control; suited only for basic reset generation.	Select when minimal footprint and lowest current are prioritized over flexibility.
TPS3808G33DBVR	Adjustable threshold (via external resistor); 3.08V default; 1.8µA ICC; watchdog timer included.	Requires external resistor for threshold setting; adds watchdog functionality not present in TS834-5ID.	Select when adjustable threshold or watchdog capability is required alongside reset supervision.

Compared with MAX809SEUR+T and TPS3808G33DBVR, the TS834-5ID uniquely delivers dual-polarity reset outputs and user-configurable reset timing in a single SO8 package - making it optimal for systems requiring coordinated reset of mixed-signal components without added discrete logic or timing components.

Availability

TS834-5ID is available at Aetrix Electronics and suitable for industrial PLC controllers, medical diagnostic handhelds, and automotive body control modules requiring stable component supply with guaranteed long-term availability and traceable sourcing.

Supply support for TS834-5ID 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 silicon solutions for automotive, industrial, and consumer markets since 1987.

The TS834 belongs to ST's voltage supervisor product line, engineered specifically for high-reliability power monitoring in resource-constrained embedded systems where precision threshold stability, ultra-low power, and dual-output flexibility are critical.

FAQ

What is the function of the Timer Control pin on TS834-5ID?

The Timer Control pin (Pin 8) determines reset pulse behavior: connecting it to VCC enables a 125–500ms reset pulse width (temperature-dependent), while connecting it to GND disables the timer for immediate reset assertion. This pin must never float and requires a solid DC connection per datasheet guidance.

Can TS834-5ID operate reliably at 3.3V supply?

Yes - TS834-5ID operates across 1.5V–5.5V, and its 4.33V threshold remains valid at 3.3V supply. However, at 3.3V, the device will assert reset immediately upon power-up (since VCC < V_TH), making it suitable only for monitoring higher rails (e.g., 5V) or as a secondary supervisor in multi-rail systems.

Why are Pins 3, 6, and 7 labeled NC in the TS834-5ID pinout?

Pins 3, 6, and 7 have no internal connection in the TS834-5ID die layout and serve only mechanical or package alignment roles. Leaving them unconnected avoids parasitic coupling; routing traces or applying bias to these pins may cause unpredictable behavior or violate absolute maximum ratings.

How does the 100mV hysteresis improve system reliability?

The 100mV hysteresis creates a 4.23V–4.33V window between turn-on and turn-off thresholds, preventing oscillatory reset toggling during slow or noisy VCC transitions near the trip point - a critical feature for stable operation in automotive and industrial environments with significant supply ripple.

TS834-5ID 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 High/Active Low

Reset Timeout:: 125ms Minimum

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

TS834-5ID FAQ

1.How can I place an order for TS834-5ID through Aetrix?

Please submit a Request for Quotation (RFQ) for TS834-5ID 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 TS834-5ID reliable?

The price and inventory of TS834-5ID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS834-5ID is usually 5 days.

3.What payment methods are accepted for TS834-5ID?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS834-5ID transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TS834-5ID?

TS834-5ID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TS834-5ID 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 TS834-5ID?

For technical support, including TS834-5ID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS834-5ID requirements.

6.How does Aetrix verify that TS834-5ID is sourced from the original manufacturer or authorized distributors?

All TS834-5ID 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 TS834-5ID meets industry standards.

7.What is the process for return or replacement of TS834-5ID?

All TS834-5ID units undergo pre-shipment inspection (PSI). If there is an issue with TS834-5ID, 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 TS834-5ID part is unused and in its original packaging.

Return procedure for TS834-5ID:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

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.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

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…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

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…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

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…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

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 …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

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…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

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…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

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…