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  ON Semiconductor Electronic Components Datasheet  

DS244 Datasheet

Octal Buffer/Line Driver with 3-State Outputs

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DS244 pdf
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 mA
–15 mA
IOL Output Current – Low
24 mA
20
1
http://onsemi.com
LOW
POWER
SCHOTTKY
MARKING
DIAGRAMS
SN74LS24xN
AWLYYWW
1
PDIP–20
N SUFFIX
CASE 738
20
1
LS24x
AWLYYWW
1
SOIC–20
DW SUFFIX
CASE 751D
x = 0 or 4
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
ORDERING INFORMATION
Device
Package
Shipping
SN74LS240N
PDIP–20
1440 Units/Box
SN74LS240DW SOIC–20 2500/Tape & Reel
SN74LS244N
PDIP–20
1440 Units/Box
SN74LS244DW SOIC–20 2500/Tape & Reel
© Semiconductor Components Industries, LLC, 2000
August, 2000 – Rev. 7
1
Publication Order Number:
SN74LS240/D


  ON Semiconductor Electronic Components Datasheet  

DS244 Datasheet

Octal Buffer/Line Driver with 3-State Outputs

No Preview Available !

DS244 pdf
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 DS244
Description Octal Buffer/Line Driver with 3-State Outputs
Maker ON Semiconductor
Total Page 8 Pages
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DS244 pdf
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