HD74HCT643 Description
Both the HD74HCT640 and the HD74HCT643 have one active low enable input (G ), and a direction control (DIR). When the DIR input is high, data flows from the A inputs to the B outputs. When DIR is low, data flows from B.
HD74HCT643 Key Features
- LSTTL Output Logic Level patibility as well as CMOS Output patibility High Speed Operation: tpd (A to B) = 14.5 ns typ (