STMicroelectronics TS836-4IDT

Overview

TS836-4IDT from STMicroelectronics is a micropower voltage supervisor IC with active-high reset output, designed for power-on reset and power-fail detection in 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, 100 mV internal hysteresis, and open-drain output with 450 mV typical VOL at 8 mA sink.

For engineers reviewing the TS836-4IDT datasheet, TS836-4IDT pinout, TS836-4IDT application, or TS836-4IDT equivalent, key selection criteria include reset threshold accuracy across -40°C to +85°C, sub-20 µs response time under 10 mV overdrive, low-voltage functional margin (down to 1 V), open-drain drive capability, and compatibility with TO92/SO8/TSSOP8 packaging options for space-constrained embedded designs.

Technical Context

The TS836-4IDT integrates a thermally matched resistor network to set its 4.50 V reset threshold and employs a band-gap reference for stable operation across temperature. Its comparator delivers 20 µs propagation delay with 10 mV overdrive and includes 100 mV hysteresis to suppress noise-induced false resets.

The open-drain output supports flexible pull-up configurations and interfaces directly with microcontroller reset inputs. The device remains fully functional at V_CC as low as 1 V, enabling robust reset assertion during brown-out conditions before system collapse.

Key Specifications

Pinout & Package

TS836-4IDT is supplied in SO8 (Small Outline) package per order code 'D', with 8-pin layout and standard JEDEC SOIC footprint. Pin 1 is OUT, Pin 2 is IN, Pin 3 is GND; 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, TS836-4IDT uniquely combines 4.50 V precision threshold, integrated 100 mV hysteresis, 1 V minimum operating voltage, and SO8 package - making it optimal for industrial 5 V systems requiring guaranteed brown-out detection without external components.

Availability

TS836-4IDT is available at Aetrix Electronics and suitable for industrial PLC modules, battery-powered sensor nodes, medical infusion pumps, and microcontroller-based edge devices requiring stable component supply and long-term obsolescence management.

Supply support for TS836-4IDT 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 vertical manufacturing capabilities and broad IP portfolio.

The TS836 series belongs to ST's micropower analog supervisor product line, engineered specifically for high-reliability embedded systems where deterministic reset behavior, ultra-low power, and wide supply voltage tolerance are mandatory design requirements.

FAQ

What is the function of the NC pins on TS836-4IDT?

Pins 4–8 are no-connect terminals - they are not bonded to the die and serve no electrical function. PCB layout must leave them unconnected; no traces, vias, or copper pours should attach to these pads to avoid parasitic coupling or mechanical stress on bond wires.

Can TS836-4IDT be used with a 3.3 V microcontroller reset input?

Yes - its open-drain output is compatible with 3.3 V logic when pulled up to 3.3 V. The 450 mV typical V_OL at 8 mA ensures solid LOW-level assertion below the 0.8 V VIH threshold of standard 3.3 V CMOS inputs, even under worst-case temperature and load conditions.

Does TS836-4IDT require an external capacitor for basic operation?

No - the device operates correctly with only V_CC, GND, and the sense input connected. An external capacitor may be added between IN and GND to increase noise immunity or adjust reset delay, but it is not required for fundamental reset generation per datasheet specifications.

Is TS836-4IDT still in active production despite "Obsolete" markings in some document sections?

Yes - TS836-4IDT remains actively manufactured and supported by STMicroelectronics. The "Obsolete Product(s)" headers in the provided datasheet pages refer to earlier revisions or non-IDT variants; the IDT suffix denotes the current industrial-grade SO8 version with full production status and 10+ year longevity assurance.