SL74HC245
Octal 3-State Noninverting Bus Transceiver
High-Performance Silicon-Gate CMOS
The SL74HC245 is identical in pinout to the LS/ALS245. The device
inputs are compatible with standard CMOS outputs; with pullup
resistors, they are compatible with LS/ALSTTL outputs.
The SL74HC245 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.
•
Outputs Directly Interface to CMOS, NMOS, and TTL
•
Operating Voltage Range: 2.0 to 6.0 V
•
Low Input Current: 1.0
µA
•
High Noise Immunity Characteristic of CMOS Devices
ORDERING INFORMATION
SL74HC245N Plastic
SL74HC245D SOIC
T
A
= -55° to 125° C for all packages
PIN ASSIGNMENT
LOGIC DIAGRAM
FUNCTION TABLE
PIN 20=V
CC
PIN 10 = GND
Control Inputs
Output
Enable
L
Direction
L
Operation
Data Transmitted
from Bus B to Bus
A
Data Transmitted
from Bus A to Bus
B
Buses Isolated
(High Impedance
State)
L
H
H
X
X = don’t care
SLS
System Logic
Semiconductor
SLS [ SYSTEM LOGIC SEMICONDUCTOR ]
