TECHNICAL DATA
IN74ACT623
Octal 3-State Noninverting
Bus Transceiver
High-Speed Silicon-Gate CMOS
The IN74ACT623 is identical in pinout to the LS/ALS623,
HC/HCT623. The IN74ACT623 may be used as a level converter for
interfacing TTL or NMOS outputs to High Speed CMOS inputs.
The IN74ACT623 is a 3-state noninverting transceiver that is used for
2-way communication between data buses. Two separate enables are
available. The enable for bus A to B is active-high, the enable for bus B
to A is active-low.
ORDERING INFORMATION
IN74ACT623N Plastic
IN74ACT623DW SOIC
TA = -40° to 85° C for all packages
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TTL/NMOS Compatible Input Levels
Outputs Directly Interface to CMOS, NMOS, and TTL
Operating Voltage Range: 4.5 to 5.5 V
Low Input Current: 1.0 µA; 0.1 µA @ 25°C
Outputs Source/Sink 24 mA
PIN ASSIGNMENT
LOGIC DIAGRAM
FUNCTION TABLE
Control Inputs
Output
Direction
Operation
Enable
L
L
Data Transmitted
from Bus B to
Bus A
PIN 20=VCC
PIN 10 = GND
H
H
Data Transmitted
from Bus A to
Bus B
H
L
L
Buses Isolated
H
(High Impedance
State)
Rev. 00
IKSEMICON [ IK SEMICON CO., LTD ]
