INS8243N I/O PORT 4-BIT Expander 5V 20mA DIP-24 (Wide)

From the shop's description

INS8243N I/O PORT 4-BIT Expander 5V 20mA DIP-24 (Wide) The INS8243N is an input/output expander device manufactured by National Semiconductor Corporation, specifically designed to furnish input/output expansion capabilities for the INS8048, INS8049, and NS8050 single-chip microcomputer family. Fabricated using XMOS™ (high-density N-channel silicon gate) technology, it operates from a single 5V supply and is fully TTL compatible. It is housed in a 24-pin dual-in-line package and provides high drive current capabilities at low cost. Features XMOS Technology Single Power Supply TTL Compatibility Low-Cost Expansion Seamless Microcomputer Interface Direct Extension High Fanout Capability 24-Pin DIP Package Applications Microcomputer I/O Expansion Multiple Expander Configurations Peripheral Interface Control Keyboard I/O Interfacing Package Content 1 x INS8243N I/O PORT 4-BIT Expander 5V 20mA DIP-24 (Wide) DataSheet INS8243N