STMicroelectronics TS836-4ID

Overview

TS836-4ID from STMicroelectronics is a micropower voltage supervisor IC with active-high reset output, designed for power-on reset and power-fail detection in low-voltage microcontroller systems. It features a precision 4.50 V threshold (±330 mV over temperature), ultra-low 12 µA supply current at 5 V, guaranteed operation down to 1 V supply, and 100 mV internal hysteresis.

For engineers reviewing the TS836-4ID datasheet, TS836-4ID pinout, TS836-4ID application, or TS836-4ID equivalent, key selection criteria include reset threshold accuracy across -40°C to +85°C, open-drain output drive capability (450 mV @ 8 mA), 20 µs response time under 10 mV overdrive, and compatibility with TO92, SO8, and TSSOP8 packages.

Technical Context

The TS836-4ID integrates a thermally matched band-gap reference and comparator with fixed 4.5 V trip point, enabling precise V_CC monitoring during power-up and brownout conditions. Its open-drain output asserts high when V_CC falls below V_THD (4.4 V typ.) and releases when V_CC rises above V_THI (4.5 V typ.), with 100 mV hysteresis preventing chatter near threshold.

It operates from 1 V to 5.5 V supply, consumes only 12 µA at 5 V, and delivers fast 20 µs propagation delay with 10 mV overdrive - critical for reliable MCU initialization in battery-powered and energy-constrained systems.

Key Specifications

Pinout & Package

TS836-4ID is available in SO8 (Small Outline) package per order code 'D'. Pin 1 = OUT (open-drain reset output), Pin 2 = IN (V_CC sense input), Pin 3 = GND (ground reference). Pins 4–8 are NC (no connect).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX809SEUR+T and TPS3808G33DBVR, TS836-4ID uniquely combines factory-trimmed 4.5 V threshold, 100 mV hysteresis, and sub-15 µA ICC in SO8 - making it optimal for fixed-threshold, noise-immune, low-power industrial reset applications where layout simplicity and thermal stability are prioritized.

Availability

TS836-4ID is available at Aetrix Electronics and suitable for power-on reset generation, power-fail detection, and battery backup supervision requiring stable component supply and long-term industrial availability.

Supply support for TS836-4ID 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, Switzerland, specializing in automotive, industrial, and power management solutions with broad manufacturing and R&D infrastructure.

The TS836 series belongs to ST's micropower analog supervisor product line, engineered specifically for robust, low-current reset functionality in cost-sensitive and energy-constrained embedded systems.

FAQ

What is the reset output polarity and drive capability of TS836-4ID?

The TS836-4ID features an active-high open-drain reset output. When V_CC is below the falling threshold (V_THD ≈ 4.4 V), the output sinks current to ground; when V_CC exceeds the rising threshold (V_THI ≈ 4.5 V), it enters high-impedance state. It drives up to 8 mA with V_OL ≤ 800 mV at V_CC = 4 V, supporting standard 10 kΩ pull-ups to 3.3 V or 5 V.

Can TS836-4ID operate reliably at 1.8 V supply?

Yes - TS836-4ID is fully specified to operate from 1 V to 5.5 V. At 1.8 V, it maintains functional reset assertion with V_THD = 4.17 V (min) and V_THI = 4.17 V (min), though actual threshold remains fixed at ~4.5 V. The device guarantees correct comparator behavior and output state transition down to 1 V, enabling use in ultra-low-voltage brownout detection scenarios.

Is an external capacitor required for proper reset timing?

No external capacitor is required for basic reset functionality. The TS836-4ID provides immediate, hysteresis-stabilized reset assertion. However, an external capacitor can be added between OUT and GND (with series resistor) to extend reset pulse width during slow V_CC decay - a documented configuration shown in ST's application diagrams for controlled power-down sequencing.

Which package variants are currently in production for TS836-4ID?

TS836-4ID is actively manufactured in SO8 (order code D, tape & reel) and TSSOP8 (order code P, tape & reel). The TO92 variant (order code Z) is legacy and no longer recommended for new designs. All packages share identical electrical specifications; SO8 offers best thermal performance (R_THJA = 175°C/W), critical for sustained 8 mA sink operation.