CAT809STBI-T3 – CATALYST SEMICONDUCTOR INC

Part Number:

CAT809STBI-T3

Manufacturer:

CATALYST SEMICONDUCTOR INC

Date Code:

RoHS:

RoHS Unknown

MSL:

COO:

CHINA

Description:

Supervisory IC, SOT‑23‑3 Package, O/Semi

Datasheet:

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Stock Quantity: 33

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33 in stock

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Product Details:

Overview

The onsemi CAT809STBI-T3 is a critical supervisory IC designed to provide robust power-on reset and system monitoring for embedded applications. Its primary function is to ensure system integrity by detecting undervoltage conditions and asserting a reset signal. A key design consideration for this device is the trade-off between reset accuracy and quiescent current; while the 2.93V threshold is precise, designers must carefully manage system power consumption to avoid false triggers in low-power states, especially when the reset timeout of 140ms is critical for stable system initialization.

Key Features

Voltage Threshold: 2.93V
Reset Output: Push-Pull, Totem Pole, Active Low
Reset Timeout: 140ms Minimum
Operating Temperature: -40°C to 85°C
Mounting Type: Surface Mount
Package: SOT-23-3 (TO-236-3, SC-59)

Applications

The component is engineered for deployment in systems requiring high reliability and performance under specific operating conditions. It provides functional stability across the stated design envelope.

Microcontroller power sequencing and brown-out detection
Battery-powered device power-fail monitoring
Real-time clock (RTC) backup power management
Automotive electronic control unit (ECU) reset generation