DM74LS243N to DM74LS244WM component electronic semiconductor

Fairchild Semiconductor

Transceiver, Non-Inverting 1 Element 4 Bit per Element Push-Pull Output 14-PDIP

Fairchild Semiconductor

Buffer, Non-Inverting 2 Element 4 Bit per Element Push-Pull Output 20-PDIP

Fairchild Semiconductor

Buffer, Non-Inverting 2 Element 4 Bit per Element Push-Pull Output 20-SOIC