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SN74LS240 Datasheet

Octal Buffer/Line Driver

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SN74LS240, SN74LS244
Octal Buffer/Line Driver
with 3−State Outputs
The SN74LS240 and SN74LS244 are Octal Buffers and Line
Drivers designed to be employed as memory address drivers, clock
drivers and bus-oriented transmitters/receivers which provide
improved PC board density.
Hysteresis at Inputs to Improve Noise Margins
3-State Outputs Drive Bus Lines or Buffer Memory Address
Registers
Input Clamp Diodes Limit High-Speed Termination Effects
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
15
mA
mA
IOL Output Current Low
24 mA
20
1
http://onsemi.com
LOW
POWER
SCHOTTKY
MARKING
DIAGRAMS
SN74LS24xN
AWLYYWW
1
PDIP20
N SUFFIX
CASE 738
LS24x
20 AWLYYWW
1 SOIC20 1
DW SUFFIX
CASE 751D
74LS24x
AWLYWW
20
1 SOEIAJ20 1
M SUFFIX
CASE 967
x = 0 or 4
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 5 of this data sheet.
© Semiconductor Components Industries, LLC, 2006
July, 2006 Rev. 9
1
Publication Order Number:
SN74LS240/D


  ON Semiconductor Electronic Components Datasheet  

SN74LS240 Datasheet

Octal Buffer/Line Driver

No Preview Available !

SN74LS240, SN74LS244
LOGIC AND CONNECTION DIAGRAMS DIP (TOP VIEW)
SN74LS240
VCC 2G 1Y1 2A4 1Y2 2A3 1Y3 2A2 1Y4 2A1
20 19 18 17 16 15 14 13 12 11
1 2 3 4 5 6 7 8 9 10
1G 1A1 2Y4 1A2 2Y3 1A3 2Y2 1A4 2Y1 GND
SN74LS244
VCC 2G 1Y1 2A4 1Y2 2A3 1Y3 2A2 1Y4 2A1
20 19 18 17 16 15 14 13 12 11
1 2 3 4 5 6 7 8 9 10
1G 1A1 2Y4 1A2 2Y3 1A3 2Y2 1A4 2Y1 GND
SN74LS240
INPUTS
1G, 2G
D
OUTPUT
LL
LH
HX
H
L
(Z)
TRUTH TABLES
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = HIGH Impedance
SN74LS244
INPUTS
1G, 2G
D
OUTPUT
LL
LH
HX
L
H
(Z)
http://onsemi.com
2


Part Number SN74LS240
Description Octal Buffer/Line Driver
Maker ON Semiconductor
Total Page 7 Pages
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