CAT9554YGI

$0.35

Description：IC XPND 400KHZ I2C SMBUS 16TSSOP
Series：CAT9554

SKU:ec7f5e7f518c Category: I/O Expanders Brand: onsemi

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Product introduction

Product Detailed Parameters

Description：IC XPND 400KHZ I2C SMBUS 16TSSOP
Series：CAT9554
Mfr：onsemi
Package：Bulk
Number of I/O：8
Interface：I2C, SMBus
Interrupt Output：Yes
Features：POR
Output Type：Open Collector, Open Drain, Push-Pull
Current - Output Source/Sink：10mA, 24mA
Clock Frequency：400 kHz
Voltage - Supply：2.3V ~ 5.5V
Operating Temperature：-40°C ~ 85°C
Mounting Type：Surface Mount
Package / Case：16-TSSOP (0.173", 4.40mm Width)
Supplier Device Package：16-TSSOP
Grade：-
Qualification：-

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CAT9554YGI

Overview

The CAT9554YGI is an I/O expander manufactured by onsemi, belonging to the CAT9554 series. It provides eight general-purpose parallel input/output (I/O) ports accessible via a two-wire I2C or SMBus serial interface. The device operates within a supply voltage range of 2.3 V to 5.5 V and supports clock frequencies up to 400 kHz. It features interrupt output capabilities and is housed in a TQFN-16 surface-mount package. The component is designed for industrial applications with an operating temperature range from -40°C to +85°C.

Feature Summary

Eight-bit parallel I/O expansion capability
I2C and SMBus compatible serial interface
Interrupt output functionality
Wide operating voltage range

Applications

Embedded system I/O expansion
Industrial control interfaces
Consumer electronics peripheral management

Procurement Notes

Verify part authenticity through authorized distributors as the component may be discontinued. Check datasheets for specific ordering suffixes and confirm RoHS compliance status before procurement. Ensure compatibility with existing system voltage levels and interface requirements.

Selection Notes

Select this component when eight additional digital I/O lines are required via I2C communication. Consider the TQFN-16 package constraints and thermal performance within the specified temperature range. Verify that the host controller supports the necessary I2C/SMBus protocols and interrupt handling mechanisms.

Part Context

This part belongs to the CAT9554 family of I/O expanders from onsemi. Similar variants include CAT9554AYI-GT2 and CAT9554WI-GT2, which offer comparable functionality but may differ in packaging or manufacturing origin. The series is designed for cost-effective I/O expansion in space-constrained designs.

Replacement Considerations

Direct substitutes include CAT9554AYI-GT2 and CAT9554WI-GT2. Verify pinout compatibility and electrical specifications before substitution. Alternative I/O expanders from other manufacturers may require schematic and firmware modifications.

How to buy

Online and offline orders are supported. If the item is available for online purchase, you can place it in the cart; for wholesale pricing, please contact our product manager for a quote.

Payment Method

Payment methods: T/T, WeChat Pay, credit cards, Google Pay, Apple Pay . Buyer covers shipping, fees, duties, and taxes; contact our product manager if you need a contract/procurement process.

Delivery time

In-stock items usually ship within 24 hours. Otherwise, shipment is arranged 1 to 2 days after the items arrive at our warehouse. Timing depends on destination and shipping method.

Freight calculation

Freight cost depends on destination, package size, and weight . We offer shipping options via DHL, FedEx, UPS, and TNT , and can ship using your freight account upon request.

Mode of Transportation

We ship via DHL, FedEx, UPS, and TNT. If you prefer a specific logistics provider, we can ship using your designated carrier.

Return and Refund

Returns are accepted within 60 days of invoice with RMA approval. Items must be resalable; original invoice and test report are required. No returns for customer errors.