CAT9552YI-T2

Overview

The CAT9552YI-T2 is a 16-channel LED driver IC manufactured by onsemi, designed for I²C and SMBus interfaces. It features an internal oscillator with two programmable timers adjustable from 0.02 to 5.8 seconds, supporting both ON/OFF and blinking modes. The device operates in a TSSOP-24 package and includes Power-On Reset (POR) functionality.

Feature Summary

• Optimized for LED On/Off and blinking control via I²C and SMBus compatibility
• Integrates internal oscillator and dual programmable timers to reduce bus traffic
• Supports independent channel configuration for individual LED status management

Applications

• Advertising point-of-sale signage with flashing LEDs
• Consumer equipment requiring on/off LED indicators
• Industrial equipment with LED status indicators

Procurement Notes

Verify component authenticity through authorized channels as the part is listed as obsolete. Confirm package integrity and pin alignment against the TSSOP-24 specification. Check datasheet revisions for any functional updates prior to integration into new designs.

Selection Notes

Select this component when designing systems requiring multiple LED indicators controlled via serial buses. It is suitable for applications needing to limit bus traffic or free up master microcontroller timers. Ensure interface voltage levels match the system requirements.

Part Context

This component belongs to the Catalyst Semiconductor product line acquired by onsemi. It serves as a parallel input/output port expander optimized for display control. The series provides solutions for managing LED states without dedicated hardware timers.

Replacement Considerations

Public confirmed substitute part numbers are not available.