U74HCT640

DESCRIPTION 

The U74HCT640 is a octal bus transceivers with 3-state outputs. 

It is designed for asynchronous two-way communication between 

data buses. Depending on the direction-control (DIR) input, data are 

transmitted from the A bus to the B bus or from B bus to the A bus. 

When OE is high, the buses are effectively isolated. When 

OE is low, the buses are enable. 

FEATURES 

* Inputs are TTL-voltage compatible 

* Typical tPD of 12ns at 5.5V, CL=50pF 

* Low power consumption, ICC = 8μA (Max) at 5.5V 

* ±6mA output driver at 4.5V

规格书U74HCT640