74ACQ244, 74ACTQ244 Quiet Series Octal Buffer/Line Driver with 3-STATE Outputs
March 2007
74ACQ244, 74ACTQ244
tm
Quiet Series Octal Buffer/Line Driver with 3-STATE
Outputs
Features General Description
I and I reduced by 50% The ACQ/ACTQ244 is an octal buffer and line driver
CC OZ
designed to be employed as a memory address driver,
Guaranteed simultaneous switching noise level and
clock driver and bus oriented transmitter or receiver
dynamic threshold performance
which provides improved PC board density. The ACQ/
Guaranteed pin-to-pin skew AC performance
ACTQ utilizes Fairchild Quiet Series technology to
Improved latch-up immunity
guarantee quiet output switching and improved dynamic
3-STATE outputs drive bus lines or buffer memory
threshold performance. FACT Quiet Series features
address registers
GTO output control and undershoot corrector in addi-
Outputs source/sink 24mA tion to a split ground bus for superior performance.
Faster prop delays than the standard AC/ACT244
Ordering Information
Package
Order Number Number Package Description
74ACQ244SC M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
Body
74ACQ244SJ M20D 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74ACTQ244SC M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
Body
74ACTQ244SJ M20D 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74ACTQ244QSC MQA20 20-Lead Quarter Size Outline Package (QSOP), JEDEC MO-137, 0.150 Wide
74ACTQ244MSA MSA20 20-Lead Shrink Small Outline Package (SSOP), EIAJ TYPE II, 5.3mm Wide
Device also available in Tape and Reel. Specify by appending suffix letter X to the ordering number.
Connection Diagram Pin Description
Pin Names Description
OE , OE 3-STATE Output Enable Inputs
1 2
I I Inputs
0 7
O O Outputs
0 7
FACT, Quiet Series, FACT Quiet Series, and GTO are trademarks of Fairchild Semiconductor Corporation.
1989 Fairchild Semiconductor Corporation www.fairchildsemi.com
74ACQ244, 74ACTQ244 Rev. 1.374ACQ244, 74ACTQ244 Quiet Series Octal Buffer/Line Driver with 3-STATE Outputs
Logic Symbol Truth Tables
IEE/IEC
Inputs Outputs
OE I Pins 12, 14, 16, 18
1 n
LL L
LH H
HX Z
Inputs Outputs
OE I Pins 3, 5, 7, 9
2 n
L L L
LH H
HX Z
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
1989 Fairchild Semiconductor Corporation www.fairchildsemi.com
74ACQ244, 74ACTQ244 Rev. 1.3 2