| 制造商 | 部件名 | 数据表 | 功能描述 |
 National Semiconductor ... | 54LS20 |  124Kb/6P | Dual 4-Input NAND Gates |
| 54LS20DMQB |  124Kb/6P | Dual 4-Input NAND Gates |
| 54LS20FMQB |  124Kb/6P | Dual 4-Input NAND Gates |
 National Semiconductor ... | 54LS20LMQB |  124Kb/6P | Dual 4-Input NAND Gates |
 National Semiconductor ... | 54LS20DMQB |  124Kb/6P | Dual 4-Input NAND Gates |
| 54LS20FMQB |  124Kb/6P | Dual 4-Input NAND Gates |
 National Semiconductor ... | 54LS20LMQB |  124Kb/6P | Dual 4-Input NAND Gates |
| 54LS21 |  120Kb/6P | Dual 4-Input AND Gates |
 National Semiconductor ... | 54LS22 |  50Kb/3P | DUAL 4-INPUT NAND GATE (WITH OPEN-COLLECTOR OUTPUT) |
| 54LS22DMQB |  50Kb/3P | DUAL 4-INPUT NAND GATE (WITH OPEN-COLLECTOR OUTPUT) |
| 54LS22FMQB |  50Kb/3P | DUAL 4-INPUT NAND GATE (WITH OPEN-COLLECTOR OUTPUT) |
| 54LS240 |  102Kb/3P | Octal TRI-STATE Buffers/Line Drivers/Line Receivers |
| 54LS240DMQB |  102Kb/3P | Octal TRI-STATE Buffers/Line Drivers/Line Receivers |
| 54LS240FMQB |  102Kb/3P | Octal TRI-STATE Buffers/Line Drivers/Line Receivers |