MC74AC521 Datasheet | Motorola Semiconductor

.. MC74AC521 MC74ACT521 8ĆBit Identity parator The MC74AC521/74ACT521 is an expandable 8-bit parator. It pares 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. - - - - - pares Two 8-Bit Words in 6.5 ns Typ Expandable to Any Word Length 20-Pin Package Outputs Source/Sink 24 m A ′ACT521 has TTL-patible Inputs N SUFFIX CASE 738-03 PLASTIC 8-BIT IDENTITY PARATOR VCC OA=B 20 19 B7 18 A7 17 B6 16 A6 15 B5 14 A5 13 B4 12 A4 11 1 IA=B 2 A0 3 B0 4 A1 5 B1 6 A2 7 B2 8 A3 9 B3 10 GND DW SUFFIX CASE 751D-04 PLASTIC PIN NAMES A0- A7 B0- B7 IA=B OA=B Word A Inputs Word B Inputs Expansion or Enable Input Identity Output LOGIC SYMBOL TRUTH TABLE Inputs IA=B L L H H A, B A = B- A≠B A = B- A≠B Outputs OA=B L H H H B7 A7 B6 A6 B5 A5 B4 A4 B3 A3 B2 A2 B1 A1 B0 A0 IA=B OA=B H = HIGH Voltage Level L = LOW Voltage Level - A0=B0, A1=B1, A2=B2, etc. FACT DATA Data Sheet 4 U . 5-1 .. MC74AC521 MC74ACT521 LOGIC...