The MC74AC521/74ACT521 is an expandable 8-bit comparator. It compares two words of up to eight bits each and provides a LOW output when the two words match bit for bit. The expansion input IA=B also serves as an active LOW enable input.
The document describes the MG74AC521/74ACT521 as an expandable 8-bit comparator that compares two words of up to eight bits each. It provides a LOW output when the input words match bit for bit and features an expansion input that also serves as an active LOW enable.
| Word Length | 8-bit |
|---|---|
| Propagation Delay (Typ) | 6.5 ns |
| Output Current | 24 mA Source/Sink |
| Package Type | 20-Pin Plastic DIP or SOIC |
The expansion input la—p also serves as an active LOW enable input.
It provides a LOW output.