| Part number | MM54C923 |
|---|---|
| Datasheet | MM54C923_NationalSemiconductor.pdf |
| File Size | 218.37 KB |
| Manufacturer | National |
| Description | 16 / 20-Key Encoder |
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These CMOS key encoders provide all the necessary logic to fully encode an array of SPST switches The keyboard scan can be implemented by either an external clock or external capacitor These encoders also have on-chip pullup devices which permit switches with up to 50 kX on resistance to be used No diodes in the switch array are needed to eliminate ghost switches The internal debounce circuit needs only a single...
| Part Number | Description |
|---|---|
| MM54C922 | 16 / 20-Key Encoder |
| MM54C90 | 4-Bit Decade / Binary Counter |
| MM54C901 | Hex Inverting TTL / Non-Inverting TTL / Inverting CMOS / Non-Inverting CMOS Buffer |
| MM54C902 | Hex Inverting TTL / Non-Inverting TTL / Inverting CMOS / Non-Inverting CMOS Buffer |
| MM54C903 | Hex Inverting TTL / Non-Inverting TTL / Inverting CMOS / Non-Inverting CMOS Buffer |
| MM54C904 | Hex Inverting TTL / Non-Inverting TTL / Inverting CMOS / Non-Inverting CMOS Buffer |
| MM54C906 | Hex Open Drain N / P-Channel Buffers |
| MM54C907 | Hex Open Drain N / P-Channel Buffers |
| MM54C914 | Hex Schmitt Trigger |
| MM54C00 | Quad 2-Input NAND Gate / Quad 2-Input NOR Gate / Hex Inverter / Triple 3-Input NAND Gate / Dual 4-Input NAND Gate |
