TECHNICAL DATA
IN74HCT245A
Octal 3-State Noninverting
Bus Transceiver
High-Performance Silicon-Gate CMOS
The IN74HCT245A is identical in pinout to the LS/ALS245.This
device may be used as a level converter for interfacing TTL or NMOS
outputs to High Speed CMOS inputs.
The IN74HCT245A is a 3-state noninverting transceiver that is used
for 2-way asynchronous communication between data buses. The device
has an active-low Output Enable pin, which is used to place the I/O ports
into high-impedance states. The Direction control determines whether
data flows from A to B or from B to A.
ORDERING INFORMATION
IN74HCT245AN Plastic
IN74HCT245ADW SOIC
IN74HCT245ATDS SOIC
TA = -55° to 125° C for all packages
•
•
•
•
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
PIN ASSIGNMENT
LOGIC DIAGRAM
FUNCTION TABLE
Control Inputs
PIN 20=VCC
Output
Enable
Direction
Operation
PIN 10 = GND
L
L
H
L
Data Transmitted
from Bus B to
Bus A
H
X
Data Transmitted
from Bus A to
Bus B
Buses Isolated
(High Impedance
State)
X = don’t care
Rev. 00
IKSEMICON [ IK SEMICON CO., LTD ]
