| 54ACQ240 | National Semiconductor | Quiet Series Inverting Octal Buffer/Line Driver with TRI-STATE Outputs |
| 54ACQ240LMQB | National Semiconductor | Quiet Series Inverting Octal Buffer/Line Driver with TRI-STATE Outputs |
| 54ACQ240DMQB | National Semiconductor | Quiet Series Inverting Octal Buffer/Line Driver with TRI-STATE Outputs |
| 54ACQ240FMQB | National Semiconductor | Quiet Series Inverting Octal Buffer/Line Driver with TRI-STATE Outputs |