BUY CP82C55A-5Z https://www.utsource.net/itm/p/5437165.html
CMOS Programmable Peripheral Interface
The CP82C55A-5Z is an 8-bit I/O port expander from Intersil. It is a 40-pin DIP package. Description: The CP82C55A-5Z is an 8-bit I/O port expander that provides an additional 8-bit I/O port to a microprocessor system. It is designed to be used with 8-bit microprocessors and can be used to expand the number of I/O ports available. Features: - 8-bit I/O port expander - 40-pin DIP package - Low power CMOS technology - TTL compatible - Programmable I/O port direction - Interrupt on change - Three-state outputs Applications: - Automotive - Industrial control - Robotics - Medical - Home automation - Security systems (For reference only)