SN74LS244 Driver Datasheet

SN74LS244 Datasheet, PDF, Equivalent


Part Number

SN74LS244

Description

Octal Buffer/Line Driver

Manufacture

ON Semiconductor

Total Page 7 Pages
Datasheet
Download SN74LS244 Datasheet


SN74LS244
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

SN74LS244
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


Features SN74LS240, SN74LS244 Octal Buffer/Line Driver with 3−State Outputs The SN74L S240 and SN74LS244 are Octal Buffers an d Line Drivers designed to be employed as memory address drivers, clock driver s and bus-oriented transmitters/receive rs which provide improved PC board dens ity. • Hysteresis at Inputs to Improv e Noise Margins • 3-State Outputs Dri ve Bus Lines or Buffer Memory Address R egisters • Input Clamp Diodes Limit H igh-Speed Termination Effects GUARANTE ED OPERATING RANGES Symbol Parameter Min Typ Max Unit VCC Supply Voltage T A Operating Ambient Temperature Range 4.75 5.0 5.25 V 0 25 70 °C IOH Outp ut Current − High − 3.0 − 15 mA mA IOL Output Current − Low 24 mA 20 1 http://onsemi.com LOW POWER SCHO TTKY MARKING DIAGRAMS SN74LS24xN AWLYYW W 1 PDIP−20 N SUFFIX CASE 738 LS24x 20 AWLYYWW 1 SOIC−20 1 DW SUFFIX CASE 751D 74LS24x AWLYWW 20 1 SOEIAJ−20 1 M SUFFIX CASE 967 x = 0 or 4 A = Asse mbly Location WL = Wafer Lot YY = Year WW = Work Week ORDERING INFORMATION See detaile.
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