74HC643
Key Features
- Octal bidirectional bus interface
- True and inverting 3-state outputs
- Output capability: bus driver
- ICC category: MSI GENERAL DESCRIPTION
- For HC the condition is VI = GND to VCC For HCT the condition is VI = GND to VCC −1.5 V December 1990
- H L X Z = HIGH voltage level = LOW voltage level = don’t care = high impedance OFF-state DIR L H X INPUTS/OUTPUTS An A=B inputs
- Bn inputs B=A
- Fig.3 IEC logic symbol
