| Manufacturer | Part # | Datasheet | Description |
 National Semiconductor ... | MM54HCT640 |  140Kb/4P | Inverting Octal TRI-STATE Transceiver |
| MM54HCT640J |  140Kb/4P | Inverting Octal TRI-STATE Transceiver |
 National Semiconductor ... | MM54HCT640J |  140Kb/4P | Inverting Octal TRI-STATE Transceiver |
| MM54HCT643 |  140Kb/4P | Inverting Octal TRI-STATE Transceiver |
| MM54HCT643J |  140Kb/4P | Inverting Octal TRI-STATE Transceiver |
| MM54HCT688 |  109Kb/4P | 8-Bit Magnitude Comparator (Equality Detector) |
| MM54HCT03 |  113Kb/4P | Quad 2-Input NAND Gate (Open Drain) |
| MM54HCT03J |  113Kb/4P | Quad 2-Input NAND Gate (Open Drain) |
| MM54HCT109 |  123Kb/4P | Dual J-K Flip-Flops with Preset and Clear |
| MM54HCT109J |  123Kb/4P | Dual J-K Flip-Flops with Preset and Clear |
| MM54HCT112 |  181Kb/3P | Dual J-K Flip-Flops with Preset and Clear |
| MM54HCT139 |  115Kb/4P | Dual 2-To-4 Line Decoder |
| MM54HCT139J |  115Kb/4P | Dual 2-To-4 Line Decoder |
| MM54HCT147 |  105Kb/4P | 10-to-4 Line Priority Encoder |
| MM54HCT147J |  105Kb/4P | 10-to-4 Line Priority Encoder |
| MM54HCT148 |  215Kb/5P | 8-3 Line Priority Encoder |
| MM54HCT151 |  137Kb/4P | 8-Channel Digital Multiplexer |
| MM54HCT151J |  137Kb/4P | 8-Channel Digital Multiplexer |
| MM54HCT155 |  182Kb/3P | Dual 2-to-4 Line Decoder/Demultiplexers |
| MM54HCT157 |  141Kb/6P | 2-Input Multiplexer , Quad 2-Input Multiplexer (Inverted Output) |