| Manufacturer | Part # | Datasheet | Description |
 National Semiconductor ... | 54ABT646 |  319Kb/14P | Octal Transceivers and Registers with TRI-STATE Outputs |
| 54ABT646D |  319Kb/14P | Octal Transceivers and Registers with TRI-STATE Outputs |
| 54ABT646E-QML |  319Kb/14P | Octal Transceivers and Registers with TRI-STATE Outputs |
| 54ABT646E-QML |  35Kb/9P | OCTAL TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS |
| 54ABT646F |  319Kb/14P | Octal Transceivers and Registers with TRI-STATE Outputs |
| 54ABT646J-QML |  319Kb/14P | Octal Transceivers and Registers with TRI-STATE Outputs |
| 54ABT646J-QML |  35Kb/9P | OCTAL TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS |
| 54ABT646L |  319Kb/14P | Octal Transceivers and Registers with TRI-STATE Outputs |
| 54ABT646W-QML |  319Kb/14P | Octal Transceivers and Registers with TRI-STATE Outputs |
| 54ABT646W-QML |  35Kb/9P | OCTAL TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS |