U74HC640

DESCRIPTION 

The U74HC640 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 the B bus to the A 

bus. 

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

OE is low, the buses are enable. 

FEATURES 

* Wide Supply Voltage Range from 2V to 6V 

* Typical tPD of 8ns at 6V, CL=50pF 

* Low Power Consumption, ICC = 8μA (Max) at 5.5V 

* ±7.8mA Output Driver at 6V

规格书U74HC640