74ACQ244 ,Quiet Series Octal Buffer/Line Driver w/TRI-STATE Outputsfeatures GTO output control andaddress registersundershoot corrector in addition to a split ground ..
74ACQ244PC ,Quiet Series Octal Buffer/Line Driver with 3-STATE OutputsFeaturesThe ACQ/ACTQ244 is an octal buffer and line driver
74ACQ244-74ACTQ244
Quiet Series Octal Buffer/Line Driver w/TRI-STATE Outputs
TL/F/10235
54ACQ/74ACQ244
54ACTQ/74ACTQ244
Quiet
Series
Octal
Buffer/Line
Driver
with
TRI-STATE
Outputs
March 1993
54ACQ/74ACQ244# 54ACTQ/74ACTQ244
Quiet Series Octal Buffer/Line Driver
with TRI-STATEÉ Outputs
General Description
The ’ACQ/’ACTQ244isan octal bufferandline driverde-
signedtobe employedasa memory address driver, clock
driverand bus oriented transmitteror receiver which pro-
vides improvedPC board density. The ACQ/ACTQ utilizes
NSC Quiet Series technologyto guarantee quiet output
switching and improved dynamic threshold performance.
FACT Quiet SeriesTM features GTOTM output controland
undershoot correctorin additiontoa split groundbusfor
superior performance.
Features ICCandIOZ reducedby 50% Guaranteed simultaneous switching noise leveland
dynamic threshold performance Guaranteed pin-to-pin skewAC performance Improved latch-up immunity TRI-STATEÉ outputs drivebus linesor buffer memory
address registers Outputs source/sink24mA Faster prop delays thanthe standard ’AC/’ACT2444kV minimum ESD immunity Standard Military Drawing (SMD) ’ACTQ244: 5962-8776003 ’ACQ244: 5962-92176
Logic Symbol Connection Diagrams
IEE/IEC
TL/F/10235–1
Pin Assignment
forDIP,Flatpak, QSOPand SOIC
TL/F/10235–2
Pin Assignment
for LCC
TL/F/10235–3
Pin Names Description
OE1,OE2 TRI-STATE OutputEnable Inputs
I0–I7 Inputs
O0–O7 Outputs
TRI-STATEÉisaregisteredtrademarkof NationalSemiconductorCorporation.
FACTTM,FACT QuietSeriesTM,andGTOTMaretrademarksofNationalSemiconductor
Corporation.
Truth Tables
Inputs Outputs
OE1 In (Pins12,14,16,18) L H Z
Inputs Outputs
OE2 In (Pins3, 5,7,9) L H Ze HIGH Voltage Level Xe ImmaterialeLOW VoltageLevel ZeHigh Impedance
C1995National SemiconductorCorporation RRD-B30M75/PrintedinU.S.A.
