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Teilenummer | DS245 |
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Beschreibung | Octal Bus Transceiver | |
Hersteller | ON Semiconductor | |
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Gesamt 4 Seiten 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.
• 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)
VCC E B1 B2 B3 B4 B5 B6 B7 B8
20 19 18 17 16 15 14 13 12 11
1 2 3 4 5 6 7 8 9 10
DIR A1 A2 A3 A4 A5 A6 A7 A8 GND
20
1
http://onsemi.com
LOW
POWER
SCHOTTKY
MARKING
DIAGRAMS
SN74LS245N
AWLYYWW
1
PDIP–20
N SUFFIX
CASE 738
TRUTH TABLE
INPUTS
E DIR
OUTPUT
L L Bus B Data to Bus A
L H Bus A Data to Bus B
H X Isolation
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
GUARANTEED OPERATING RANGES
Symbol
Parameter
Min Typ Max Unit
VCC Supply Voltage
TA Operating Ambient
Temperature Range
4.75 5.0 5.25
V
0 25 70 °C
IOH Output Current – High
–3.0 mA
–15 mA
IOL Output Current – Low
24 mA
20
1
LS245
AWLYYWW
1
SOIC–20
DW SUFFIX
CASE 751D
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
ORDERING INFORMATION
Device
Package
Shipping
SN74LS245N
PDIP–20
1440 Units/Box
SN74LS245DW SOIC–20 2500/Tape & Reel
© Semiconductor Components Industries, LLC, 2000
August, 2000 – Rev. 7
1
Publication Order Number:
SN74LS245/D
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Seiten | Gesamt 4 Seiten | |
PDF Download | [ DS245 Schematic.PDF ] |
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