DM74S280
9-Bit Parity Generator/Checker (Fairchild Semiconductor)
DM74S283
4-Bit Binary Adder with Fast Carry (Fairchild Semiconductor)
DM74S287
(256 x 4) 1024-BIT TTL PROM (National Semiconductor)
DM74S288
256-BIT TTL PROM (National Semiconductor)
DM74S288
256 - BIT TTL PROM (National Semiconductor)
DM74S20
Dual 4-Input NAND Gate (Fairchild Semiconductor)
DM74S240
Buffers / Lind Drivers / Line Receivers (National Semiconductor)
DM74S240
(DM74S240 - DM74S244) Octal 3-STATE Buffer/Line Driver/Line Receiver (Fairchild Semiconductor)
DM74S241
Buffers / Lind Drivers / Line Receivers (National Semiconductor)
DM74S241
(DM74S240 - DM74S244) Octal 3-STATE Buffer/Line Driver/Line Receiver (Fairchild Semiconductor)