| Manufacturer | Part # | Datasheet | Description |
National Semiconductor ... | MM54HCT643 | 
140Kb/4P | Inverting Octal TRI-STATE Transceiver |
| MM54HCT643J |
140Kb/4P | Inverting Octal TRI-STATE Transceiver |
National Semiconductor ... | MM54HCT640 |
140Kb/ 4P | Inverting Octal TRI-STATE Transceiver |
| MM54HCT640J |
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) |
| MM54HCT158 |
141Kb/ 6P | 2-Input Multiplexer , Quad 2-Input Multiplexer (Inverted Output) |
| MM54HCT190 |
170Kb/ 8P | Level changes on Enable or Down/Up can be made regardless of the level of the clock |
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