| 制造商 | 部件名 | 数据表 | 功能描述 |
 National Semiconductor ... | 54LS170DMQB |  103Kb/4P | 4x4 REGISTER FILE WITH OPEN-COLLECTOR OUTPUTS |
 National Semiconductor ... | 54LS170DMQB |  103Kb/ 4P | 4x4 REGISTER FILE WITH OPEN-COLLECTOR OUTPUTS |
 National Semiconductor ... | 54LS170FMQB |  103Kb/ 4P | 4x4 REGISTER FILE WITH OPEN-COLLECTOR OUTPUTS |
| 54LS170 |  103Kb/ 4P | 4x4 REGISTER FILE WITH OPEN-COLLECTOR OUTPUTS |
 National Semiconductor ... | 54LS173 |  115Kb/ 4P | TRI-STATE 4-BIT D-TYPE REGISTER |
| 54LS173DMQB |  115Kb/ 4P | TRI-STATE 4-BIT D-TYPE REGISTER |
| 54LS173FMQB |  115Kb/ 4P | TRI-STATE 4-BIT D-TYPE REGISTER |
| 54LS173LMQB |  115Kb/ 4P | TRI-STATE 4-BIT D-TYPE REGISTER |
| 54LS174 |  174Kb/ 8P | Hex/Quad D Flip-Flops with Clear |
 National Semiconductor ... | 54LS174DMQB |  174Kb/ 8P | Hex/Quad D Flip-Flops with Clear |
 National Semiconductor ... | 54LS174FMQB |  174Kb/ 8P | Hex/Quad D Flip-Flops with Clear |
 National Semiconductor ... | 54LS174LMQB |  174Kb/ 8P | Hex/Quad D Flip-Flops with Clear |
 National Semiconductor ... | 54LS175 |  174Kb/ 8P | Hex/Quad D Flip-Flops with Clear |