IC M74HC623

DESCRIPTION
The 74HC623 is an advanced high-speed CMOS OCTAL BUS TRANSCEIVER (3-STATE)
fabricated with silicon gate technology. This IC is intended for two-way asynchronous
communication between data buses. The control function implementation allows maximum
flexibility in timing. This device allows data transmission from the A bus to B bus or from the B to the A bus depending upon the logic level levels at the enable inputs (GBA and GAB). The enable inputs can be used to disable the device so that the buses are effectively isolated. The dual enable configuration gives this device the capability to store data by simultaneous enabling of GBA and GAB. Each output reinforces its input in this transceiver configuration. Thus, when both control inputs are enabled and all other data sources to the two sets
of bus lines are at high impedance, both sets of bus lines (16 in all) will remain at their last states. The 8-bit codes appearing on the two sets of buses will be identical. All inputs are equipped with protection circuits against static discharge and transient excess voltage.

HIGH SPEED:
tPD = 10ns (TYP.) at VCC = 6V
n LOW POWER DISSIPATION:
ICC = 4mA(MAX.) at TA=25

IC M74HC623
M74HC623B1R DIP-20
M74HC623M1R SOP-20
M74HC623TTR TSSOP-20 OCTAL BUS TRANSCEIVER
WITH 3 STATE OUTPUTS