| 制造商 | 部件名 | 数据表 | 功能描述 |
 National Semiconductor ... | 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 |
| 54LS240LMQB |  102Kb/ 3P | Octal TRI-STATE Buffers/Line Drivers/Line Receivers |
| 54LS241 |  102Kb/ 3P | Octal TRI-STATE Buffers/Line Drivers/Line Receivers |
| 54LS241DMQB |  102Kb/ 3P | Octal TRI-STATE Buffers/Line Drivers/Line Receivers |
| 54LS241FMQB |  102Kb/ 3P | Octal TRI-STATE Buffers/Line Drivers/Line Receivers |
| 54LS241LMQB |  102Kb/ 3P | Octal TRI-STATE Buffers/Line Drivers/Line Receivers |
| 54LS244 |  139Kb/ 6P | Octal TRI-STATEE Buffers/Line Drivers/Line Receivers |
| 54LS244DMQB |  139Kb/ 6P | Octal TRI-STATEE Buffers/Line Drivers/Line Receivers |
| 54LS244FMQB |  139Kb/ 6P | Octal TRI-STATEE Buffers/Line Drivers/Line Receivers |
| 54LS244LMQB |  139Kb/ 6P | Octal TRI-STATEE Buffers/Line Drivers/Line Receivers |
| 54LS245 |  139Kb/ 6P | TRI-STATE Octal Bus Transceiver |
 National Semiconductor ... | 54LS245DMQB |  139Kb/ 6P | TRI-STATE Octal Bus Transceiver |
| 54LS245FMQB |  139Kb/ 6P | TRI-STATE Octal Bus Transceiver |
| 54LS245LMQB |  139Kb/ 6P | TRI-STATE Octal Bus Transceiver |
| 54LS247 |  66Kb/ 3P | BCD TO 7-SEGMENT DECODER/DRIVER WITH OPEN-COLLECTOR OUTPUTS |
| 54LS247DMQB |  66Kb/ 3P | BCD TO 7-SEGMENT DECODER/DRIVER WITH OPEN-COLLECTOR OUTPUTS |
| 54LS247FMQB |  66Kb/ 3P | BCD TO 7-SEGMENT DECODER/DRIVER WITH OPEN-COLLECTOR OUTPUTS |