PCI7421ZHK

Controllers Overview

The PCI7421ZHK is a dual-socket CardBus controller manufactured by Texas Instruments, designed for high-performance mobile computing applications. It integrates IEEE 1394 Open Host Controller Interface (OHCI) capabilities alongside standard PCI Bus interface functions. The device supports both single and dual socket configurations, enabling flexible system design for laptops and portable devices. Operating within a voltage range of 3V to 3.6V, it ensures compatibility with low-power architectures. Packaged in a 288-NFBGA format measuring 16x16 mm, the component facilitates dense circuit board layouts while maintaining signal integrity for high-speed data transfer between peripheral cards and the host system.

Controllers Feature Summary

• Integrates dual-socket CardBus controller functionality with IEEE 1394 OHCI host controller capabilities
• Supports simultaneous operation of two PC Card sockets with unified bus management
• Provides compliant PCI interface for connecting peripheral components to the host processor

Controllers Applications

• Dual-socket laptop computer systems requiring integrated CardBus and Firewire connectivity
• Mobile workstations needing high-speed data transfer via IEEE 1394 standards
• Portable devices utilizing UltraMedia PC Card expansion slots

Controllers Procurement Notes

Verify the specific package marking and date code against the official Texas Instruments datasheet to confirm authenticity. Ensure the procurement channel provides traceable documentation matching the 288-NFBGA specification. Cross-reference the part number suffix with manufacturer records to validate operational parameters and compliance status before integration into production designs.

Controllers Selection Notes

Select this component when designing systems requiring native support for both CardBus and IEEE 1394 interfaces within a single integrated circuit. It is suitable for applications demanding dual socket management without external bridge controllers. Consider the NFBGA package constraints and thermal requirements during PCB layout planning to ensure reliable operation within the specified voltage and temperature ranges.

Controllers Part Context

This component belongs to the PCI7421 family of controllers from Texas Instruments, specifically engineered for mobile computing platforms. It addresses the need for consolidated interface solutions in portable electronics, replacing discrete logic setups. The device represents a specialized solution for managing legacy PC Card standards alongside emerging high-speed serial interfaces in compact form factors.

Controllers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.