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JM38510/34803SRA
Octal Bidirectional Transceiver with TRI-STATE Inputs/Outputs
TL/F/9503
54F/74F245
Octal
Bidirectional
Transceiver
with
TRI-STATE
Outputs
June 1995
54F/74F245
Octal Bidirectional Transceiver with TRI-STATEÉ Outputs
General Description
The ’F245 contains eight non-inverting bidirectional buffers
with TRI-STATE outputs andis intendedfor bus-oriented
applications. Current sinking capabilityis24mA(20mAMil)theA ports and64mA(48mAMil)attheB ports.The
Transmit/Receive (T/R) input determinesthe directionof
dataflow through thebidirectional transceiver. Transmit(ac-
tive HIGH) enables data fromA portstoB ports; Receive
(active LOW) enables data fromB portstoA ports. The
Output Enable input, when HIGH, disables bothAandB
portsby placing themina HighZ condition.
Features Non-inverting buffers Bidirectional data pathA outputs sink24mA(20mAMil)B outputs sink64mA(48mAMil) Guaranteed 4000V minimum ESD protection
Commercial Military Package Package DescriptionNumber
74F245PC N20A 20-Lead (0.300× Wide) Molded Dual-In-Line
54F245DM (Note2) J20A 20-Lead Ceramic Dual-In-Line
74F245SC (Note1) M20B 20-Lead (0.300× Wide) Molded Small Outline, JEDEC
74F245SJ(Note1) M20D 20-Lead (0.300× Wide) Molded Small Outline, EIAJ
74F245MSA(Note1) MSA20 20-Lead Molded Shrink Small Outline, EIAJ TypeII
54F245FM (Note2) W20A 20-Lead Cerpack
54F245LM (Note2) E20A 20-Lead Ceramic Leadless Chip Carrier, TypeC
Note 1:Devicesalso availablein13×reel. Usesuffixe SCX,SJXand MSAX.
Note 2:Military gradedevicewith environmentaland burn-in processing.Use suffixe DMQB, FMQBand LMQB.
Logic Symbols
TL/F/9503–3
IEEE/IEC
TL/F/9503–4
TRI-STATEÉ isaregistered trademarkof National SemiconductorCorporation.
C1995National SemiconductorCorporation RRD-B30M75/PrintedinU.S.A.
