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Fairchild Semiconductor |
January 2008
74AC244, 74ACT244
Octal Buffer/Line Driver with 3-STATE Outputs
Features
■ ICC and IOZ reduced by 50%
■ 3-STATE outputs drive bus lines or buffer memory
address registers
■ Outputs source/sink 24mA
■ ACT244 has TTL-compatible inputs
General Description
The AC/ACT244 is an octal buffer and line driver
designed to be employed as a memory address driver,
clock driver and bus-oriented transmitter/receiver which
provides improved PC board density.
Ordering Information
Order Number
Package
Number
Package Description
74AC244SC
74AC244SJ
74AC244MTC
74AC244PC
74ACT244SC
M20B
M20D
MTC20
N20A
M20B
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm
Wide
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
74ACT244SJ
74ACT244MSA
74ACT244MTC
74ACT244PC
M20D
MSA20
MTC20
N20A
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
20-Lead Shrink Small Outline Package (SSOP), JEDEC MO-150, 5.3mm Wide
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm
Wide
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering number.
All packages are lead free per JEDEC: J-STD-020B standard.
©1988 Fairchild Semiconductor Corporation
74AC244, 74ACT244 Rev. 1.4.0
www.fairchildsemi.com
Connection Diagram
Logic Symbol
IEEE/IEC
Pin Description
Pin
Names
Description
OE1, OE2
I0–I7
O0–O7
3-STATE Output Enable Inputs
Inputs
Outputs
Truth Tables
Inputs
OE1
L
In
L
LH
HX
Inputs
OE2
L
In
L
LH
HX
X = Immaterial
Z = High Impedance
Outputs
(Pins 12, 14, 16, 18)
L
H
Z
Outputs
(Pins 3, 5, 7, 9)
L
H
Z
©1988 Fairchild Semiconductor Corporation
74AC244, 74ACT244 Rev. 1.4.0
2
www.fairchildsemi.com
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