General Description
The AC/ACT521 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.

FEATUREs
■ ICC reduced by 50%
■ Compares two 8-bit words in 6.5 ns typ
■ Expandable to any word length
■ 20-pin package
■ Outputs source/sink 24 mA
■ ACT521 has TTL-compatible inputs