SN74LS245
Octal Bus Transceiver
The SN74LS245 is an Octal Bus Transmitter/Receiver designed for
8-line asynchronous 2-way data communication between data buses.
Direction Input (DR) controls transmission of Data from bus A to bus
B or bus B to bus A depending upon its logic level. The Enable input
(E) can be used to isolate the buses.
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Hysteresis Inputs to Improve Noise Immunity
2-Way Asynchronous Data Bus Communication
Input Diodes Limit High-Speed Termination Effects
ESD > 3500 Volts
LOGIC AND CONNECTION DIAGRAMS DIP
(TOP VIEW)
V
CC
20
E
19
B1
18
B2
17
B3
16
B4
15
B5
14
B6
13
B7
12
B8
11
LOW
POWER
SCHOTTKY
20
1
1
DIR
2
A1
3
A2
4
A3
5
A4
6
A5
7
A6
8
A7
9
A8
10
GND
PLASTIC
N SUFFIX
CASE 738
TRUTH TABLE
INPUTS
OUTPUT
E
L
L
H
DIR
L
H
X
Bus B Data to Bus A
Bus A Data to Bus B
Isolation
20
1
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
SOIC
DW SUFFIX
CASE 751D
GUARANTEED OPERATING RANGES
Symbol
V
CC
T
A
I
OH
Parameter
Supply Voltage
Operating Ambient
Temperature Range
Output Current – High
Min
4.75
0
Typ
5.0
25
Max
5.25
70
– 3.0
– 15
I
OL
Output Current – Low
24
Unit
V
°C
mA
mA
mA
Device
SN74LS245N
SN74LS245DW
Package
16 Pin DIP
16 Pin
Shipping
1440 Units/Box
2500/Tape & Reel
ORDERING INFORMATION
©
Semiconductor Components Industries, LLC, 1999
1
December, 1999 – Rev. 6
Publication Order Number:
SN74LS245/D
ONSEMI [ ON SEMICONDUCTOR ]
