| производитель | номер детали | датащи | подробное описание детали |
 National Semiconductor ... | MM74HC280N |  120Kb/4P | 9-Bit Odd/Even Parity Generator/Checker |
 National Semiconductor ... | MM74HC280J |  120Kb/ 4P | 9-Bit Odd/Even Parity Generator/Checker |
| MM74HC280 |  120Kb/ 4P | 9-Bit Odd/Even Parity Generator/Checker |
| MM74HC283 |  127Kb/ 6P | 4-Bit Binary Adder with Fast Carry |
| MM74HC283J |  127Kb/ 6P | 4-Bit Binary Adder with Fast Carry |
| MM74HC283N |  127Kb/ 6P | 4-Bit Binary Adder with Fast Carry |
| MM74HC20 |  123Kb/ 4P | Dual 4-Input NAND Gate |
 National Semiconductor ... | MM74HC237 |  151Kb/ 6P | 3-to-8 Line Decoder With Address Latches |
| MM74HC237J |  151Kb/ 6P | 3-to-8 Line Decoder With Address Latches |
| MM74HC237N |  151Kb/ 6P | 3-to-8 Line Decoder With Address Latches |