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7464 ,DIGITALLY CONTROLLED AUDIO PROCESSOR WITH SRS SURROUND SOUND AND VOICE CANCELLERTDA7464DIGITALLY CONTROLLED AUDIO PROCESSOR WITHSRS SURROUND SOUND AND VOICE CANCELLERThe Device in ..
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7489 ,64 Bit RAM89
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5962-9218701M2A-5962-9218701MSA
Quiet Series Octal Bidirectional Transceiver w/TRI-STATE Outputs
54ACQ245• 54ACTQ245
Quiet Series Octal Bidirectional Transceiver with
TRI-STATE® Inputs/Outputs
General DescriptionThe ’ACQ/’ACTQ245 contains eight non-inverting bidirec-
tional buffers with TRI-STATE outputsandis intendedfor
bus-oriented applications. Current sinking capabilityis mAatboth theAandB ports. TheTransmit/Receive (T/R)
input determinesthe directionof dataflow throughthe bidi-
rectional transceiver. Transmit (active-HIGH) enables data
fromA portstoB ports; Receive (active-LOW) enables data
fromB portstoA ports. The Output Enable input, when
HIGH,disables both AandB ports byplacing themina HIGH condition.
The ’ACQ/’ACTQ utilizes NSC Quiet Series technologyto
guarantee quiet output switching and improve dynamic
threshold performance. FACT Quiet Series™ features
GTO™ output controland undershootcorrectorin additionto split groundbusfor superior performance.
FeaturesICCandIOZ reducedby 50% Guaranteed simultaneous switching noise leveland
dynamic threshold performance Improved latch-up immunity TRI-STATE outputs drivebus linesor buffer memory
address registers Outputs source/sink24mA Faster prop delays thanthe standard ’ACT2454kV minimum ESD immunity (’ACQ) Standard Military Drawing (SMD) ’ACTQ245: 5962-92187 ’ACQ245: 5962-92177
Logic Symbols
Pin Description
Names Output Enable Input
T/R Transmit/Receive Input
A0–A7 SideA TRI-STATE Inputsor TRI-STATE Outputs
B0–B7 SideB TRI-STATE Inputsor TRI-STATE Outputs
GTO™ isatrademark ofNationalSemiconductor Corporation.
TRI-STATE®isa registeredtrademark ofNationalSemiconductorCorporation.
FACT®isa registeredtrademark ofFairchildSemiconductor Corporation.
FACTQuiet Series™ isatrademarkofFairchild SemiconductorCorporation.
DS100237-1
IEEE/IECDS100237-2
September 1998
54ACQ245
54ACTQ245
Quiet
Series
Octal
Bidirectional
ransceiver
with
TRI-ST
Inputs/Outputs 1998 National Semiconductor Corporation DS100237
