CS8900A-IQ3Z

IC LAN ETHERNET CTLR 3V 100LQFP

CS8900A-IQ3Z – 3V/5V Ethernet Controller IC – Cirrus Logic
The CS8900A-IQ3Z from Cirrus Logic is an Ethernet controller IC engineered for reliable wired network connectivity in embedded systems. Supporting 10 Base-T standards and dual-voltage operation, this component delivers robust communication capabilities for industrial and commercial applications. PCX ensures genuine Cirrus Logic components with same-day shipping and dedicated technical support.

Key Features

Protocol: Ethernet 10 Base-T PHY standard
Interface: ISA bus compatibility
Voltage Range: Flexible 3V or 5V operation
Current Supply: Low 95mA consumption
Operating Temperature: Industrial-grade -40°C to 85°C
Package: 100-LQFP (14x14mm compact design)

Technical Details
This Ethernet controller integrates a complete physical layer (PHY) and media access control (MAC) in a single 100-pin LQFP package. Featuring ISA bus interface architecture, it simplifies integration with legacy systems while providing deterministic data handling. The industrial temperature tolerance ensures stable performance in harsh environments. Note: This part is marked obsolete by Cirrus Logic but remains available at PCX for lifecycle support.

Common Applications

Industrial automation control systems
Legacy embedded computing platforms
Medical monitoring equipment
Test and measurement instruments
Retrofit networking for factory machinery

About Cirrus Logic
Cirrus Logic is a globally recognized leader in high-precision analog and digital signal processing components. With over 35 years of innovation, the company specializes in power-efficient ICs for audio, industrial, and embedded markets. Their solutions are renowned for exceptional signal integrity and reliability in mission-critical applications.

Cirrus Logic maintains rigorous quality certifications including ISO 9001, with design and testing processes focused on long-term performance stability. The company holds over 1,000 patents, reflecting their commitment to technological advancement and engineering excellence across automotive, industrial, and consumer sectors.

About Ethernet Controller ICs
Ethernet controller ICs manage wired network communications by handling data packet processing, signal modulation, and protocol compliance. They serve as the critical bridge between a device’s main processor and physical network infrastructure, enabling stable, high-speed data transfers. These components implement IEEE 802.3 standards while managing error correction and collision detection.

In industrial and embedded systems, controllers like the CS8900A-IQ3Z provide deterministic connectivity where wireless solutions are impractical. They enable remote monitoring, firmware updates, and machine-to-machine communication in automation, IoT gateways, and legacy equipment upgrades, forming the backbone of networked hardware ecosystems.

Packaging Options
Available in manufacturer tray packaging. Contact PCX sales for bulk order configurations and reel customization options.

Frequently Asked Questions
Question: Is this IC suitable for new designs despite being obsolete?
Answer: While not recommended for new designs, it remains ideal for maintaining/repairing existing systems where component matching is critical.

Question: What cable types are compatible with the