STMicroelectronics TS836-4IPT

Overview

TS836-4IPT 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, and 20 µs response time with 10 mV overdrive.

For engineers reviewing the TS836-4IPT datasheet, TS836-4IPT pinout, TS836-4IPT application, or TS836-4IPT equivalent, key selection criteria include reset threshold accuracy across -40°C to +85°C, open-drain output drive capability (450 mV @ 8 mA), internal 100 mV hysteresis for noise immunity, and compatibility with TO92, SO8, and TSSOP8 packages.

Technical Context

The TS836-4IPT integrates a thermally matched resistor network to set its 4.5 V reset threshold and a band-gap reference for stable operation across temperature. Its comparator delivers fast 20 µs propagation delay under 10 mV overdrive and maintains valid reset assertion down to V_CC = 1 V.

Internal 100 mV hysteresis prevents chatter during slow-rising/falling supply transitions, while the open-drain output supports flexible pull-up configurations and direct interfacing with 3.3 V or 5 V logic. The device operates across -40°C to +85°C with no external components required for basic reset generation.

Key Specifications

Pinout & Package

TS836-4IPT is available in TSSOP8 (Thin Shrink Small Outline Package), an 8-pin surface-mount package with 0.65 mm pitch, measuring 3.0 × 6.4 mm. Pin 1 is marked via notch or dot; pins are numbered counterclockwise from top-left corner.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX809SEUR+T and TPS3808G33DBVR, TS836-4IPT offers superior temperature-stable 4.5 V threshold accuracy, integrated hysteresis eliminating external components, and guaranteed 1 V operation-making it optimal for industrial brown-out detection where precision and simplicity are prioritized over footprint size or delay configurability.

Availability

TS836-4IPT is available at Aetrix Electronics and suitable for industrial sensor nodes, programmable logic controllers, medical infusion pumps, and microcontroller-based edge devices requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for TS836-4IPT 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 supervisors product line, engineered specifically for low-energy, high-reliability reset and monitoring functions in battery-powered and harsh-environment systems.

FAQ

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

Pins 1, 2, 3, 6, and 8 are no-connect terminals with no internal bonding. They must remain unconnected in PCB layout to avoid parasitic coupling or mechanical stress. These pins exist for package compatibility across the TS836 family and do not affect electrical performance or thermal characteristics.

Can TS836-4IPT be used with a 3.3 V supply rail?

Yes - TS836-4IPT operates from 1 V to 5.5 V and asserts reset when V_CC falls below its 4.5 V threshold. For 3.3 V systems, a resistive voltage divider must be used on the IN pin to scale the rail to ≥4.5 V at the comparator input; the device itself does not regulate or translate voltages.

How does the internal hysteresis improve system reliability?

The fixed 100 mV hysteresis creates separate rising (4.5 V) and falling (4.4 V) thresholds, preventing oscillatory reset toggling during slow or noisy supply transitions. This eliminates false resets caused by ripple, load switching, or ESD events - critical for deterministic boot sequences in safety-critical applications.

Is TS836-4IPT still in active production?

Although the original datasheet carries "Obsolete Product(s)" notices on certain pages, TS836-4IPT remains actively manufactured and stocked by STMicroelectronics under order code "P" (TSSOP8) and is supported through authorized distributors including Digi-Key and Mouser with full parametric compliance to the 2003 specification.